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Kappa Lab is a digital assets market maker committed to delivering 24/7 deep liquidity and enhancing market efficiency. Our proprietary technology enables us to provide swift and effective solutions to our partners, while our sophisticated algorithms ensure efficient and consistent pricing across all trading venues. We fuel the Web3 ecosystem, driving innovation in pioneering projects with the professionalism and dedication of our exceptional team. Description As a Quant Developer at Kappa Lab, you will be working within a trading team, playing a pivotal role in translating quantitative trading strategies into operational algorithms and production-grade code. You will be working at the forefront of the rapidly evolving world of cryptocurrency trading. This position demands a blend of problem-solving skills, adaptability, and collaborative teamwork. If you possess a strong background in programming, excellent analytical skills, and an interest in the crypto markets, we want to hear from you! We offer a hybrid working arrangement, with the opportunity to be based in either our London or Dubai Office. Responsibilities • Design, develop, and implement high-performance trading algorithms and systems for cryptocurrency markets, ensuring they align with quantitative strategies and market-making objectives., • Optimize code for speed, reliability, and scalability to handle high-frequency trading environments and large-scale data processing., • Analyze market data, liquidity patterns, and order book dynamics to improve algorithm efficiency and pricing models., • Improve reporting and analysis of the existing system's performance. Required skills • Proficiency in Python., • Strong understanding of data structures, algorithms, and software design principles., • Experience with data analysis and manipulation using libraries like NumPy, Pandas, or similar tools., • Good knowledge of probability, statistics, and quantitative modeling techniques., • Familiarity with cryptocurrency markets, blockchain technology, and trading concepts (e.g., order types, liquidity provision)., • Excellent problem-solving skills and the ability to work effectively in a fast-paced, team-oriented environment. Desirable skills • Proficiency in Rust and/or Cython.., • Experience in high-frequency trading (HFT), market making, or algorithmic trading in crypto or traditional finance. Kappa Lab is an equal opportunites employer committed to creating an inclusive and diverse workplace. We welcome applications from all individuals and do not discriminate based on race, colour, nationality, ethnicity, religion or belief, sex, sexual orientation, gender identity or expression, marital status, pregnancy or maternity, disability, or age. We value and respect the unique contributions each person brings, and we strive to ensure that everyone can thrive and grow within our organization.

Blockchain Developer - Web3 / DeFi Innovator - London (Tech stack: Blockchain Developer, Solidity, Node.js, React, HTML5, CSS3, TypeScript, Foundry, Hardhat, Ethereum-based ecosystems, bridging between L1 and L2, NoSQL databases, Git, Agile, Rust, Go, L2 frameworks, Unity, Unreal, GoDot, Programmer, Full Stack Engineer, Architect, Blockchain Developer) We have an exciting new opportunity for a Blockchain Developer to join one of London's most forward-thinking Web3 / DeFi innovators. This is your chance to work at the cutting edge of blockchain technology-building scalable, decentralised applications and systems with real-world impact. Our client is on a mission to reshape how decentralised finance and digital ecosystems interact, using sophisticated Layer 2 scaling solutions and bleeding-edge tech. Our client is looking for a passionate Blockchain Developer with strong skills in Ethereum-based ecosystems. You will be joining a world-class engineering team, contributing across the full stack, from writing performant smart contracts to architecting scalable back-ends and beautiful user-facing interfaces. They will provide exposure and training in: Solidity, Node.js, React, HTML5, CSS3, TypeScript, Foundry, Hardhat, Ethereum-based ecosystems, bridging between L1 and L2, NoSQL databases, Git, Agile, Rust, Go, L2 frameworks, Unity, Unreal and GoDot. This is your opportunity to be involved in building a brand-new decentralised application from the ground up, working in an agile, fast-paced and intellectually stimulating environment. Web3 is evolving rapidly and our client is at the forefront. All Blockchain Developer positions come with the following benefits: Token-based equity options. Private healthcare. Remote-first working environment. 3 hours of innovation time each week to explore emerging blockchain tech. Annual training budget of £5,000. 28 days holiday (excluding Bank Holidays) plus your birthday off. Flexible working hours. Monthly team socials (virtual and in-person). Work-from-anywhere policy for up to 6 weeks per year. Location: London, UK / Fully Remote Salary: £65,000 - £90,000 + Bonus + Equity + Benefits Applicants must be based in the UK and have the right to work in the UK, even though this is a remote-first position. NOIRUKTECHREC NOIRUKREC

Hi, we’re MoonPay. We’re here to onboard the world to the decentralized economy. Why?Because crypto and blockchain aren’t just technologies—they’re tools for global financial empowerment. They give people control over their money, their digital assets, and their future, unlocking opportunities that traditional systems have kept out of reach. What we doAt MoonPay, we’re building the infrastructure that powers this new financial system. We make it easy for anyone, anywhere, to buy, sell, and trade crypto using everyday payment methods like cards, Apple Pay, PayPal, Revolut and Venmo. We provide simple tools to send, receive, and manage stablecoins, so anyone can participate in the crypto economy confidently. Trusted by nearly 30 million customers and over 500 companies, our secure, enterprise-grade platform is driving mainstream crypto adoption worldwide. We collaborate with innovative brands and projects to build secure, scalable solutions for a blockchain-powered future. And we’re committed to doing it right—fully licensed in the U.S. and regulated across the UK, EU, Canada, and Australia—because trust and compliance are non-negotiable. But we’re just getting started. We’ve launched a consumer app that makes crypto accessible, intuitive, and usable for everyone, and it’s growing fast. We’re iterating every day to make it the best it can be. If you believe financial freedom should be for everyone—if you believe in building a fairer, more open financial system—we want you with us. To build systems that benefit all, we need contributions from all, regardless of background. Come build the future of payments and the decentralized economy with MoonPay. Let’s make financial freedom and autonomy the new normal. ✍️ About the Opportunity The Financial Intelligence Unit (FIU) is responsible for safeguarding the MoonPay platform against financial crime and money laundering activities. Leveraging advanced analytics and blockchain tracing tools, it collects and analyses huge volumes of data to identify potentially suspicious activities. The team collaborates with regulatory bodies, preparing & submitting Suspicious Activity Reports (SARs) and sharing intelligence to combat financial crime. The FIU Analyst will directly support the Financial Intelligence Unit (FIU) to ensure the business operates in accordance with all legal and regulatory requirements and all Group standards relating to anti-money laundering and counter terrorism financing. This role will be responsible to conduct transaction monitoring reviews to ensure efficient monitoring and detection of potential money laundering, terrorist financing, or illicit activities and escalate such activity for additional review. In addition, this role will work independently and closely with the FIU Director and Sr FIU Director, Regional Lead, Team Lead, and/or applicable Head of Compliance in international operational jurisdictions to ensure that all AML related matters are addressed in a timely fashion and in accordance with MoonPay's Compliance policies and procedures. • Utilize the transaction monitoring and/or blockchain analytics solutions to independently analyze and assess activity or patterns of activity that do not commensurate with the customer’s profile or expected behaviour., • Review blockchain wallet screening as well as KYT alerts and/or investigations to include on-chain activity to determine if the customer activity presents risk indicators., • Independently conduct open source searches as applicable to the relevant customer(s), counterparties, and/or transactional activity., • Analyze transactional activity, along with information collected through internal systems, blockchain screening tools, and open sources and use sound judgment, decision-making skills in making reasonable and well supported alert dispositions with adequate conclusions., • Prepare clear and concise alert and/or case dispositions of potential suspicious activity detected for a Suspicious Matter Report (SMR) consideration., • May be required to draft Suspicious Matter Reports (SMRs)Discuss potentially unusual findings with the Team Lead, Sr FIU Manager, Head of FIU, and/or appropriate Head of Compliance to determine the proper course of action., • Ensure that transaction monitoring alerts, case investigations and SMRs are completed/submitted within the established deadlines and SLAs., • Previous working experience in Financial Crime/Compliance analytical / investigations role(s), for at least 2 years, preferably in TM/FIUACAMS / ACFCS or ICA accreditation, • Experience with blockchain analytics solutions (Chainalysis, TRM, Elliptic, CipherTrace, Scorechain), • Strong problem-solving skills and attention to detail, • Ability to handle shifting priorities and thrive in a dynamic environment., • Comfortable to work independently and upskill on new tools and technology., • Team player with good communication skills, with the ability to explain technical concepts clearly to different audiencesFluent in English, • Prior experience working in a fast-paced fintech/cryptocurrency company, • Blockchain analytics solution certifications (Chainalysis, TRM, Elliptic, CipherTrace, Scorechain), • Proactive, “can-do”, collaborative approachSolution orientated, • Ability to demonstrate a practical approach to alert processing / analysis, • Ability to feed rule / investigation output back into AML Programme, • Interested in cryptocurrency, blockchain and financial crime detection.What you will be working with/on… You will be at the forefront of safeguarding MoonPay against financial crime. In this role, you'll be working in the FIU as an operational team member to review and resolve financial crimes alerts on a day-to-day basis and conduct Financial Crime Investigations. In addition, you will be responsible for escalating suspicious activity, and, if applicable, preparing suspicious activity reports in the required jurisdiction. You will be engaged within MoonPay’s Financial Intelligence Unit as well as with the MoonPay’s Risk and Compliance Teams and appropriate Heads of Compliance. We’re looking for people who live our core values, those who strive for excellence and want to leave a lasting legacy on the global financial system. Our values: B - Be HungryL - Level UpO - Own ItC - Crypto CuriousK - Kaizen What’s in it for you 💰Competitive salary package 🤝 Equity package: We believe financial freedom starts with our employees, so all employees have ownership at MoonPay 📈 Pay for performance equity bonus: Those who drive outsized outcomes receive outsized rewards 🚀 Moonshot award. We honor exceptional impact - 10 employees twice a year, each earning a $250,000 equity grant. 🏝 Unlimited holidays: We give you the autonomy to choose when to work (and when to switch off) 🌍 Hybrid working schedule: Work fully remotely or your nearest Moonbase, the choice is yours 🩺 Private Healthcare benefits: To protect you and your loved ones 🍼 Enhanced parental leave: So you can spend more time with your loved ones without a second thought 📚 Annual training budget: We support your training journey every step of the way 🪑 Home office setup allowance: Create the home office of your dreams 👛 Remote working allowance: Those working fully remotely get a little extra for utilities 💰 Monthly budget to spend on our products and zero fee crypto transactions: Cultivate your inner DEGEN 💰 Employee referral programme: Great people know great people, refer them to receive 10K in USDC ✈️ Regular remote company offsites: Meet your colleagues regularly for high impact in person sessions and hackathons 🚀 Working in a disruptive and fast-growing company where excellence is rewarded What’s it like to work at MoonPay? At MoonPay, you’ll work alongside driven, resourceful people who are passionate about excellence in everything they do. Kaizen is more than just a saying here, it’s a mindset. We encourage you to think big, take risks, and push the boundaries of what’s possible, knowing you have the support of a team that wants to see you grow. We’re listed in the _ and consistently strive to provide an environment where everyone feels they can their best work. Whether you’re remote or collaborating with teammates around the world, you’ll find opportunities here to do the best work of your career while shaping the future of the decentralized economy. Commitment To DiversityResearch has shown that women are less likely than men to apply for this role if they do not have experience in 100% of these areas. Please know that this list is indicative, and that we would still love to hear from you even if you feel that you are only a 75% match. Skills can be learnt, diversity cannot. Please let us know if you require any accommodations for the interview process, and we’ll do our best to provide assistance. At MoonPay we believe that every voice matters. We strive to create a mindful and respectful environment where everyone can bring their authentic self to work, and experience a culture that is free of harassment, racism, and discrimination. That’s why we are committed to diversity and inclusion in the workplace and are a proud equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including, but not limited to, hiring, recruiting, promotion, termination, layoff, and leave of _ is also committed to providing reasonable accommodations in our job application procedures for qualified individuals with disabilities. Please inform our Talent Team if you need any assistance completing any forms or to otherwise participate in the application process. Please be aware that MoonPay does not request an AI-led interview without seeing a recruiter or team member from MoonPay on video call. We won't ask for your personal identification documents or any money from you during your interview process with us. Be fraud smart! If you receive an email - claiming to be from MoonPay - but from an email address ending in anything other than @moonpay.com, please be aware that this is not us.We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Founded in 2015 with the mission to protect the open economy, OpenZeppelin is the world leader in securing blockchain applications and smart contracts. Our Open-Source Contract Libraries are a public good that have facilitated the transfer of over $35 trillion and are considered the industry standard for smart contract development. Our professional expertise integrates seamlessly into clients’ development lifecycles, enabling teams to plan, code, audit, deploy, and operate projects more quickly and securely. Please note: Always refer to OpenZeppelin's official job page for the most accurate information about our open roles, as we have seen multiple third party job sites posting inaccurate information. The Financial Institutions team at OpenZeppelin drives the adoption of security solutions for financial institutions moving onchain. As tokenization and digital assets gain momentum, we partner with the world's largest institutions to deliver industry-leading security audits and battle-tested open-source smart contract libraries. Our mission is to generate revenue through best-in-class security services while building innovative solutions for a rapidly evolving market. We operate cross-functionally with Pre-Sales, Partnerships, Ecosystem, Project Delivery, and Legal to ensure a seamless go-to-market strategy and flawless execution. As our first dedicated Institutional Sales Lead for the European market, you will be instrumental in executing our go-to-market strategy - from outbound prospecting to deal closure - while laying the foundation for a scalable sales organization. Your responsibilities will include: • Managing the full sales cycle with financial institutions, from lead generation and prospecting through to contract negotiation and deal closure., • Leading discovery conversations with key stakeholders - including C-suite executives and internal Solution Architects - to surface client needs and compellingly articulate OpenZeppelin's value proposition., • Driving regional revenue growth in the region by consistently meeting and exceeding your sales targets., • Identifying strategic partnerships in your region to generate qualified leads and accelerate deal velocity, then handing off to our Partnerships team at the right moment., • Staying ahead of rapidly evolving market trends and competitive dynamics to proactively shape outreach and positioning., • Representing OpenZeppelin at key European and global industry events, conferences, and trade shows to build relationships and uncover new business opportunities., • Maintaining accurate pipeline forecasts, tracking performance metrics, and continuously refining your sales approach using data-driven insights., • 6+ years of experience in enterprise or institutional sales, with a proven track record of consistently exceeding revenue targets., • Deep understanding of Web3, digital assets, and the tokenization landscape; hands-on experience in the crypto industry is a strong plus., • Based in the CEST timezone - preference for candidates located in London or Switzerland., • Exceptional communication, negotiation, and relationship-building skills, with the gravitas to engage C-suite and senior decision-makers., • A well-established network within the financial services or blockchain ecosystem, including founders, executives, and industry leaders., • A data-driven mindset combined with the creativity and adaptability to thrive in a fast-moving, high-ambiguity environment., • Demonstrated success working in a remote-first, globally distributed team., • Bachelor’s degree in business, finance, or a related field., • An existing network spanning TradFi asset managers, hedge funds, market makers, custodians, and financial intermediaries., • Experience rapidly generating and testing new sales motions ("fail fast") and distilling learnings for both clients and internal stakeholders., • Strong acumen in GTM engineering or AI-powered sales tooling., • Technical background or familiarity with smart contract development, particularly in Solidity., • Fluency in a second European language (French, German is particularly valued). This interview process consists of the following stages: • Recruiter Interview (30-45 minutes), • Hiring Manager Interview (45 minutes), • Team Interview (30 minutes), • Leadership Interview (30 minutes), • Paid work trial (lasting up to 10 days), • Reference checks Please let us know if you require any accommodations for the interview process, and we'll do our best to provide assistance. • Company in-person gatherings in different locations around the world 😎, • Fully remote work 🌎, • Flexible time off 🏝, • Paid parental leave 💙, • One time work-from-home equipment stipend of up to $500 USD 🪑, • Medical insurance coverage 🏥, • Learning & Development opportunities 🧠, • Work with a global team in a fast-growing industry 🚀 At OpenZeppelin, we are an equal opportunity employer and we value different perspectives. We are committed to building a diverse workforce. This includes but is not limited to gender, race, sexual orientation, religion, national origin and other characteristics that make each one of us unique. In this uniqueness, we find the most value. Come join us!

How We Work We're on a mission to create the most innovative and industry-leading cryptocurrencies exchange. Our team is globally distributed, so clear communication is critical. We are in constant contact as we hustle to develop, support, and deliver the best platform possible for our users. If you get excited about being in an industry that is breaking new ground and have a disposition of confidence towards challenging technical feats, we want to talk to you. We’re currently looking for a Customer Support Specialist to join our team. The position is remote and available to anyone self-driven, and with the experience and capacity to contribute to our vision. Key responsibilities Effectively handles inquiries and requests from corporate and professional traders Continuously upgrade skill sets Lead by example to demonstrate full ownership of outstanding customer service Contribute to the positive customer support culture through active participation and support of the Bitfinex vision, initiatives, and objectives Cross-team interactions You must be able to work independently with minimum supervision, flexible as to working arrangements and hours, and confident in making decisions in accordance with Bitfinex’s practice. Experience and a deep interest in working with Finance, Mathematics or Statistics Good understanding of trading and derivatives markets Strong analytical ability Experience in customer relations, ability to handle requests and inquiries is essential Excellent communication skills in English Passionate about cryptocurrency and blockchain world Detail-oriented Security and privacy focus Familiar with Office Suites (especially Excel)

About Rated 🌐 _ 🌐 Rated offers node and node operator ratings, robust data pipelines and the most comprehensive infrastructure dataset, for Ethereum. In a few short months since founding, we have built a product that users love, and a product that offers a real service to the ecosystem. Our mission is to promote transparency, good standards and improve the foundation of Web3. Put simply, we cannot imagine a world where anywhere near 1% of the worlds transactions run on a blockchain, without transparency at the base layer. We are here to enable this future. 💼 The Role We welcome applications from folks that don’t exactly fit the mold of the explicit roles we are hiring for, but find themselves intellectually taken and mission aligned with the vision we’re pursuing. You might be: • a budding Protocol Researcher/Designer with engineering and/or data skills;, • a Developer Evangellist with a strong track record of success;, • a visionary Brand person that resonates with our mission and vision;, • a Community Manager or Customer Success person that’s adept in Web3 infrastructure;, • a seasoned Enterprise Sales leader with experience in sales cycles;, • or a talented up and comer that’s committed to the industry and its future.But also you might not be those things—surprise us!, • We’re a highly technical 12 person team (and growing!), working in a hybrid/remote set-up, with a home base in London, UK., • We are all deeply embedded in the ecosystem and are working very close to the fold, in terms of research and development in Web3 infrastructure., • Competitive salary & equity package, • Flexible PTO, • Hybrid/remote work set-up with a homebase in London, • We are also offering visa sponsorship for candidates who wish to relocate to the UK.

At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand for hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of blockchain to users around the world through leading products including OKX, OKX Wallet, OKLink, and more. You will drive the growth and market presence of OKX in MENA region, directly owning acquisition, activation, and trading-volume outcomes. Your mission: accelerate user growth, boost trading activity, and build OKX’s brand. Own and deliver the market growth plan for your market: new users, active traders, trading volume and retention. Monitor user trends, competitor activity, and regulatory shifts to shape market strategy and uncover new growth levers. Localize and execute paid-acquisition and referral campaigns: ensure messaging, targeting, and timing align with the market culture and digital landscape. Activate and coordinate local influencer/KOL and community programs: engage key voices, host local activations and amplify user engagement. Remove funnel friction: identify and fix conversion blockers, and recommend experiments to improve flow. Build and manage local ecosystems and partnerships: collaborate with local payment partners, trading communities, media, and events to grow reach. Track, analyze and report key growth metrics weekly: derive actionable market insights. Represent OKX in-market: attend local fintech/crypto events, promote brand awareness, and deliver user-facing engagements. Work closely with both regional and global OKX teams — marketing, product, CRM, and partnerships — to align priorities, share insights, and ensure all initiatives are integrated toward common growth targets. 7-10 years of experience in growth, marketing, or partnerships in fintech, crypto, or digital trading. Proven performance in your market: user acquisition, activation, and trading or transaction growth. Excellent understanding of the local digital, social and crypto ecosystem. Strong analytical skills and comfort making data-driven decisions. Fluent in Arabic and English; strong at stakeholder engagement and communication. Fast-moving, hands-on, execution oriented. Always focused on “what will move the needle. Competitive total compensation package. Learning & Development programs and education subsidies. Various team-building programs and company events. Wellness and meal allowances. Comprehensive healthcare schemes for employees and dependants. More that we love to tell you along the process! All official OKX vacancies are published on this website. While roles may appear on selected third-party platforms from time to time, information on other sites may be inaccurate or outdated. If in doubt, please apply directly through our official careers website. Information collected and processed as part of the recruitment process of any job application you choose to submit is subject to OKX’s Candidate Privacy Notice. Notice: All official OKX vacancies are published on this website. While roles may appear on selected third-party platforms from time to time, information on other sites may be inaccurate or outdated. If in doubt, please apply directly through our official careers website. Information collected and processed as part of the recruitment process of any job application you choose to submit is subject to OKX's _.

About OKX At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About The Opportunity We’re seeking a Treasury Manager to join our global treasury team in London — someone who’s ready to step into a high-impact role in a dynamic, startup-style environment, with the resources and reach of a global fintech leader. This is an exciting opportunity to work at the intersection of corporate finance, banking, and digital assets while gaining a front-row view into the inner workings of a global crypto business. If you’re a natural leader who thrives in competitive, fast-paced environments — whether in business, sports, or both — and can rally diverse teams to deliver results, we want you on our side. Act as the Treasurer for assigned entities in the UK, US, and select European jurisdictions. Take full ownership of treasury management: liquidity planning, bank account oversight, FX risk management, and short-term investment strategies. Manage day-to-day treasury operations with accuracy, speed, and a problem-solving mindset. Partner with Finance Operations to execute internal financing activities — including capital injections, dividend distributions, and intercompany loans. Play a key role in growing OKX’s new Global Treasury Centre in London. Lead and participate in group-wide and cross functional projects, driving process standardization and alignment with global best practices. Represent the treasury team in market-facing relationships with banks, partners, and service providers. Bachelor’s degree or above from a leading university; MBA preferred. 3–4 years of experience in corporate treasury, corporate finance, or banking. Proven leadership track record, ideally in competitive environments (sports, high-performance teams, or project leadership). In-house banking experience is a plus; digital asset/crypto experience is an advantage but not required. Strong analytical skills, meticulous attention to detail, and the ability to thrive under tight deadlines. A self-starter mindset — proactive, adaptable, and eager to learn new skills. Confidence in managing external relationships and representing the company in the market. Ability to work independently while collaborating effectively across global teams. • Competitive remuneration package (Basic Salary + Yearly Bonuses)., • Hybrid work environment available as part of our flexible working approach, • Monthly Team Building, • Excellent prospects for growth and promotion - we provide you with assistance, opportunities for skill development, mentoring, and training programmes to help you succeed., • Employee engagement, recognition and appreciation program., • Multinational working environment - Advance your career by interacting with individuals from various backgrounds, cultures, and nations. #LI-AZ1 #LI-ONSITE

pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals. Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement. We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with stakeholders to set technical direction, remove bottlenecks, and ship production-grade code. Engagement Details: • Type: Full-time independent contractor, • Hours: Full-time commitment expected, • Location: Remote (US, Canada, UK, Ireland or Netherlands), • Clients: US and Europe, • Rate: Competitive, based on experience What You'll Own • End-to-end technical ownership of a high-revenue web platform and mobile app, • Architecture design and long-term technical strategy, • Server-side rendering pipeline using Node.js, Fastify 5, and React 19, • Data layer across MySQL and BigQuery, • GCP infrastructure including Cloud Run, Cloud Build, and Global Load Balancer, • Ad-tech integrations including Google Ad Manager, GTM, GTag, and GPT.js, • Performance optimization at scale, where every millisecond counts, • ML pipeline maintenance and optimization for ad-tech performance Must-Have Qualifications These are non-negotiable. Please only apply if you have strong, production-proven experience in all of the following: • Node.js with TypeScript in production, • React in a server-side rendering context, • MySQL including database design, query optimization, and ORM usage, • BigQuery for querying and managing large-scale datasets, • GCP with hands-on experience in Cloud Run, Cloud Build, Cloud SQL, and Load Balancing. GCP certification is a significant bonus. Nice-to-Have Experience • Ad-tech industry experience including ad serving, yield optimization, and programmatic advertising, • Affiliate marketing experience, particularly with Anura and Everflow, • Cloudflare including CDN configuration, caching strategies, and Workers, • Fastify, especially Fastify 5 patterns, • Flutter for mobile app contribution, • Golang or Rust for high-performance service work, • Machine learning applied to ad-tech optimization (not LLMs or agents), • Experience in DeFi, crypto, NFT, blockchain, fintech, or healthcare verticals, • Fully remote work, • Flexible hours, • Paid vacation and sick days Application Process • We do not review applications via LinkedIn DMs or email. Please apply through the application link., • We do not work with staffing agencies or third-party recruiters. Direct applicants only. pubGENIUS is an Equal Opportunity Employer; employment with pubGENIUS is governed on the basis of merit, competence, and qualifications and will not be influenced in any manner by race, age, colour, gender, religion, national origin/ethnicity, veteran status, sexual orientation, marital status, gender identity, mental or physical disability, or any other legally protected status.

Location: Remote - Preference for Europe/Dubai/UK but open to candidates based in EST time zones Compensation: $130K - $150K We are building a secure computation network that is fundamentally changing how high-value data is stored and used globally. Our decentralized technology expands beyond traditional blockchain transactions into new verticals like AI, biometric data, health data, voting, and consumer data using privacy-enhancing technologies (PETs). Backed by a record-setting seed round and founded by high-profile leaders from Uber, Indiegogo, and Coinbase, we are seeking a highly experienced Head of Community to drive our global strategy. This is a critical, deeply cross-organizational role where you will design and execute innovative strategies to bring to life a vibrant global community. You will serve as the pulse of the project, collaborating closely with senior Marketing, Product, Engineering, and Research teams to align community initiatives with the project's development and vision. Key Responsibilities: • Strategy & Growth: Develop and execute creative strategies to drive community growth and engagement with intentionality., • Program Leadership: Lead end-to-end community initiatives, including ambassador programs, interactive forums, competitions, and social media campaigns., • Cross-Org Alignment: Collaborate closely with Marketing, Product, Engineering, Developer Relations, and Research teams to ensure a cohesive community strategy., • Events & Hosting: Organize and host community AMAs, webinars, workshops, and Twitter/X Spaces, and participate in live events., • Sentiment & Feedback: Monitor and analyze community sentiment, trends, and feedback to inform product and marketing strategies., • Team Building: Recruit, train, and manage a team of community ambassadors, setting clear goals and metrics., • Risk Management: Lead crisis management and conflict resolution within the community., • Experience: 4+ years of experience as a community leader in crypto/Web3., • Crypto Fluency: Deeply embedded in crypto culture, fluent in its narratives and evolving ecosystem., • Scaling Track Record: Proven ability to build and scale communities, ambassador programs, and engagement campaigns., • Technical Grasp: Strong grasp of blockchain technology and decentralized systems., • Soft Skills: Excellent communicator with strong interpersonal skills and high emotional intelligence., • Strategic & Analytical: Strategic thinker and planner, skilled in data-driven engagement strategies, and possessing creative problem-solving abilities with a bias for action., • Leadership: Empathetic and curious leader who motivates teams and builds resilient, growth-driven cultures. Preferred Experience (Nice-to-Have): • Active personal Twitter presence., • Experience at an early-stage startup or a Web3 protocol., • Skilled in community platforms and social tools., • Compensation: Competitive compensation package, inclusive of a base salary ($130K - $150K) and a vast token allocation (token award)., • Flexibility: 100% remote-first organization (primarily focused on European and US East Coast time zones) with working hours adaptable to your lifestyle., • Time Off: 25 days of annual paid vacation, plus paid sick leave & parental leave., • Culture & Offsites: Twice a year company offsite to work and have fun as a team, plus a mentorship-oriented work culture., • Wellness: Company-paid Employee Assistance Program (mental, financial, and legal help) and a monthly coworking stipend up to €150., • Impact: Work on new, complex problems in an emerging and dynamic field (secure computation, PETs, AI) and learn from world-class domain experts. Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within 4 weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search. Commitment to Equality and Accessibility: At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing human-resources@mlabs.city. MLabs Ltd collects and processes the personal information you provide such as your contact details, work history, resume, and other relevant data for recruitment purposes only. This information is managed securely in accordance with MLabs Ltd’s Privacy Policy and Information Security Policy, and in compliance with applicable data protection laws. Your data may be shared only with clients and trusted partners where necessary for recruitment purposes. You may request the deletion of your data or withdraw your consent at any time by contacting legal@mlabs.city.

Join Tether and Shape the Future of Digital Finance At Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction. Innovate with Tether Tether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services. But that’s just the beginning: Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-diverse facilities. Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing. Tether Education: Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity. Tether Evolution: At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways. Why Join Us? Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry. If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you. Are you ready to be part of the future? About the job As a Print & Multimedia Designer at Tether, you will play a pivotal role in crafting visually compelling assets for print production for events, campaigns, and multimedia content production for events. Working closely with marketing, business development, and external production companies, you will ensure accurate and brand-aligned design content that supports and contributes to the overall success of events and campaigns. Key Responsibilities: • Create precise, high-quality print materials and event graphics that support Tether’s global initiatives, ensuring consistent visual communication and effective collaboration with production partners to deliver flawless execution., • Create and refine visual content for landing pages, social media banners, campaign imagery, and video assets across multiple platforms., • Develop and execute innovative design concepts for Tether’s diverse units, focusing on fintech and communication technologies., • Tailor content specifically for each communication channel, enhancing audience engagement and traffic., • Share design ideas and insights with the team, contributing to the overall success of marketing campaigns. Job Requirements: • At least 3 years proven experience as a Graphic Designer with a strong focus on print and multimedia design for events., • Expertise in creating print materials, with a keen eye for detail and quality., • Proficiency in using graphic AI tools like Midjourney, Stable Diffusion, and Pika Labs., • Demonstrated modern design portfolio showcasing event and multimedia projects., • Extensive knowledge of social media platforms (LinkedIn, Twitter, Instagram, Reddit, Facebook, Keet) and content strategies., • Fluent English communication skills, Spanish / Italian is a bonus, • Advanced proficiency in design tools like Figma and Adobe Suite (After Effects is a plus)., • Strong understanding of branding and adherence to brand guidelines., • Self-motivated, with a proactive approach to challenges and a passion for innovation., • Ability to thrive in a fast-paced environment, managing multiple projects with flexibility and efficiency., • Collaborative team player with a professional attitude and strong work ethic. Perks: • Work with a team of passionate and talented individuals., • Gain insights into the blockchain and cryptocurrency world., • Enjoy remote work with flexible hours., • Engage in creatively challenging projects daily. Your application has been successfully submitted! _

About the Role: As a Backend Engineer, you'll collaborate directly with the CTO to architect and build the core infrastructure of Pod. This is a high-impact role where you’ll shape the foundation of a platform designed to push the boundaries of decentralized applications. Responsibilities: Architect and Build: Design and implement critical systems, including consensus mechanisms, transaction reordering processes, and state management. Innovate: Address complex challenges in distributed systems and cryptography to enhance scalability and robustness. Collaborate: Work closely with the founding team to iterate rapidly based on feedback from our integration partners and other members of the blockchain ecosystem. Set Standards: Establish benchmarks, tools, and best practices to ensure the system is efficient, scalable, and developer-friendly. Qualifications: Blockchain Expertise: Strong understanding of blockchain systems, consensus mechanisms, and cryptographic principles. Backend Development: Experience building scalable, high-performance systems. Programming Skills: Proficiency in Rust. Experience in libraries like alloy and reth is appreciated. Adaptability: Ability to dive into new technologies and concepts with ease. Team Collaboration: Comfortable working in a fast-paced environment with a small, high-performing team. Attention to Detail: Commitment to producing clean, maintainable code and clear documentation. Why Join Us? Renowned Team: Work with some of the brightest minds in blockchain and distributed systems, leveraging the expertise of the Common Prefix team. Shape the Future: Play a key role in raising the bar for what weak consensus systems can achieve. Ownership: Significant equity to reflect your impact on the company's success. Collaborative Environment: Join a talented and ambitious team dedicated to pushing boundaries in blockchain innovation. Growth Opportunity: Be a founding member of a company redefining blockchain infrastructure.

Tether, the founder of the first, largest, and most widely used stablecoin USD₮, is rapidly expanding into a wide range of sectors, including secure and unstoppable communication technologies, energy production, mining, and further fintech infrastructure. All of these themes share and are deeply rooted in the principles of Bitcoin, which include decentralization, resilience, openness, freedom, security, and scalability. Tether stablecoins are used to power a wide variety of enterprises, including exchanges, wallets, payment processors, and financial services, by facilitating the use of reserve-backed tokens across blockchain networks. Tether stablecoins offer a global, secure, and instant means of storing, transmitting, and receiving digital tokens at a fraction of the cost of alternative traditional financial solutions. Unwavering transparency is of paramount importance and central to Tether's foundational principles. Our dynamic team operates entirely remotely, uniting talent from every corner of the globe. Our journey has been marked by rapid growth and efficient operations, firmly establishing us as pioneers within the industry. If you possess a passion for venturing into uncharted territory and believe in your ability to conquer even the most formidable challenges, we eagerly invite you to engage with us. Join our mission, and together, let's lay the groundwork for a decentralized future that reshapes industries far beyond the realm of stablecoins. As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry. Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth. Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base. Exceptional Node/JavaScript skills Familiar with microservices architecture Have actively participated in the development of a complex platform Familiar with Peer-to-Peer technologies Good experience in interacting with databases (MySQL, MongoDB) Ability to quickly learn new technologies Good understanding of security practices Nice to have Experience with blockchain integration Comfortable with high-availability concepts Ruby, Rust or C++ skills are a plus Other technologies of interest: Message queues (Redis), Caches and Job Queues

About Wintermute Wintermute is one of the largest crypto-native algorithmic trading companies in digital assets. We provide liquidity algorithmically across most cryptocurrency exchanges and trading platforms, a broad range of OTC trading solutions as well as support high profile blockchain projects and traditional financial institutions moving into crypto. Wintermute also has a Wintermute Ventures arm that invests in early stage DeFi projects. Wintermute was founded in 2017 by industry leaders and has successfully navigated crypto industry cycles. Culturally, we combine the best of the two worlds: the technology standards of high-frequency trading firms in traditional markets and the innovative and entrepreneurial culture of technology startups. To Wintermute digital assets is not just another asset class, we believe in the innovative potential of blockchain, the fundamental innovations, we have a long-term view on the digital asset market and are taking a leadership position in building an innovative and compliant market. Read more _ Working at Wintermute Wintermute seeks an experienced C++ Developer for its growing options team, one of the biggest electronic trading desks in the crypto options market. In this role, you will directly collaborate with our traders, focusing on the development of scalable, high-performance options trading systems. You will engage with the full options stack, expanding the business across centralized finance, decentralized finance, and OTC. The ideal candidate is able to solve difficult problems and thrives in a fast-paced environment. \n Responsibilities • System Architecture: Design and implement scalable, low-latency options trading systems and strategies., • Performance Optimization: Continuously optimize and monitor the performance of the trading system, ensuring fast execution. ., • Testing: Contribute to the development of unit and integration tests to ensure the reliability and stability of the trading system. Hard Skills requirements • Strong proficiency in C++ programming and software development best practices., • Experience in developing trading platforms, preferably from a HFT environment, • Knowledge of options or crypto would be an advantage., • Familiarity with market data feeds, order execution protocols and connectivity to exchanges., • Solid understanding of multi-threading, concurrency and low latency programming., • Strong problem-solving and analytical skills, • Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, or a related field. Join our dynamic team and benefit from: • Working at one of the most innovative trading firms globally., • Engaging projects offering accelerated responsibilities and ownership compared to traditional finance environments., • A vibrant working culture with frequent team meals, holiday celebrations, gaming events, and company-wide outings, including our annual Wintermute weekend getaway., • A Wintermute-inspired office in central London, featuring an array of amenities such as table tennis and foosball, personalized desk configurations, a cozy team breakout area with games and free food., • Great company culture: informal, non-hierarchical, ambitious, highly professional with a startup vibe, collaborative and entrepreneurial., • A performance-based compensation with a significant earning potential alongside standard perks like pension and private Health insurance. Note: • Although we are unable to accept fully remote candidates, we support significant flexibility in regards to working from home and working hours., • We offer UK work permits and help with relocation Find out more: • _, • _, • _, • _, • _ \n

Founded in 2012, Bitfinex is a digital asset trading platform offering state-of-the-art services for digital currency traders and global liquidity providers. We're on a mission to create the most innovative cryptocurrencies exchange. This is a unique opportunity, a rare window of time at the tipping point of the financial evolution. Much like the early days of the internet, blockchain technology faces complex new challenges and having the best team plays a pivotal role in success. Our team is fully remote and globally distributed to capture the best talent from around the world. So far our company has grown fast and stayed lean to secure its place as a leader in the space. If you get excited about being in an industry that is breaking new ground and have confidence you can conquer the most challenging feats we'll encounter, we want to talk to you. Join us, and help lay the foundation for a decentralized future. Currently looking for: Remote Mobile Engineer - React Native Job description As a Mobile-App Developer, you will be a part of the team that works on the development of the Bitfinex mobile applications. This includes: New Features - Bitfinex continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry. Scalability - The mobile application must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth. Data Visualization - The data we present to our users is the result of tailored algorithms, on top of the incredible amount of data our platform produces daily, and we continue to experiment with new ways to display this most effectively. Design - Build beautiful reactive applications and trading tools. To enjoy this role, you should possess the personal attributes and experience outlined above. On top of this, we expect you to be: Comfortable with high-availability concepts. Highly proficient in JavaScript and ES6+. Thoroughly experienced with React, React-Native (mainly around Expo), Redux and the core principles surrounding these. Familiar with modern front-end pipelines and tools. Experienced with WebSockets, RESTful based APIs. Interested in bringing diverse, innovative applications to life. Interested in modernizing and optimizing different mobile or web applications. Knowledge in native languages (Swift/Kotlin) and familiarity with native build tools (Xcode/Android Studio) is advantageous.

About Wintermute Wintermute is one of the largest crypto-native algorithmic trading companies in digital assets. We provide liquidity algorithmically across most cryptocurrency exchanges and trading platforms, a broad range of OTC trading solutions as well as support high profile blockchain projects and traditional financial institutions moving into crypto. Wintermute also has a Wintermute Ventures arm that invests in early stage DeFi projects. Wintermute was founded in 2017 by industry leaders and has successfully navigated crypto industry cycles. Culturally, we combine the best of the two worlds: the technology standards of high-frequency trading firms in traditional markets and the innovative and entrepreneurial culture of technology startups. To Wintermute digital assets is not just another asset class, we believe in the innovative potential of blockchain, the fundamental innovations, we have a long-term view on the digital asset market and are taking a leadership position in building an innovative and compliant market. Read more _ Working at Wintermute We are looking for a C++ Trading Platform Developer who is passionate about technology, interested in both low level details of how computer hardware operates and high-level design of large systems, as well as in data infrastructure. Someone who likes opening the hood to see how things work, has understanding of data structures, experience writing client-server network applications, and writing and optimising code for high performance. We welcome your previous experience from your own personal projects as well as commercial experience. We are looking for people who are passionate about technology and have experience looking under the hood to see how C++ standard libraries and other solutions are implemented. Interest in algorithmic and quantitative trading is a plus. At Wintermute you will have an opportunity to grow and make direct impact on trading by developing and improving all the parts of the trading platform, data infrastructure and related software, while also getting advice and guidance from very experienced developers and traders, including the founders. You will get a lot of independence and responsibility right away, and you'll learn at an unprecedented speed! No legacy systems, no multiple levels of approvals, no bureaucracy; all developers report directly to CTO who is very hands on. You are judged by what you deliver, not by the hours your do. It is up to you to make an impact! You will work alongside exceptionally sharp colleagues, learn how to write fail-safe code and improve performance and scalability of the trading system, a real challenge and a rare opportunity! We have flexible working arrangements, it’s the productivity that matters. What will you work on A great advantage of this position is that it is varied, and it is also up to you to shape it in the direction that matches your talents and company needs. The focus of the role would be to work on the global trading platform that spans across many continents, with real time data capture, order entry on dozens of exchanges, robust connectivity and built in monitoring. You would be working on expanding and scaling up our trading platform, mainly using C++ and Python. All the workstations and servers are running Linux, no windows in trading and the development team. We also keep things simple and easy to understand wherever possible which means designing, scalable and robust C++ and Python code is a main skill. We will share more technical details in the interviews. You will have opportunity to improve your knowledge of software optimisations, of building robust large-scale systems and to understand crypto currency trading. \n Hard Skills requirements • Strong C++ skills are required - we will test, • Experience with looking under the hood to see how C++ standard libraries work - we will test, • Strong analytical skills - we will test, • Understanding of networking, CPU and memory model, assembly language - desirable Join our dynamic team and benefit from: • Working at one of the most innovative trading firms globally., • Engaging projects offering accelerated responsibilities and ownership compared to traditional finance environments., • A vibrant working culture with frequent team meals, holiday celebrations, gaming events, and company-wide outings, including our annual Wintermute weekend getaway., • A Wintermute-inspired office in central London, featuring an array of amenities such as table tennis and foosball, personalized desk configurations, a cozy team breakout area with games and free food., • Great company culture: informal, non-hierarchical, ambitious, highly professional with a startup vibe, collaborative and entrepreneurial., • A performance-based compensation with a significant earning potential alongside standard perks like pension and private Health insurance. Note: • Although we are unable to accept fully remote candidates, we support significant flexibility in regards to working from home and working hours., • We offer UK work permits and help with relocation Find out more: • _, • _, • _, • _, • _ \n

Our Krakenites are a world-class team with crypto conviction, united by our desire to discover and unlock the potential of crypto and blockchain technology. What makes us different? Kraken is a mission-focused company rooted in crypto values. As a Krakenite, you’ll join us on our mission to accelerate the global adoption of crypto, so that everyone can achieve financial freedom and inclusion. For over a decade, Kraken’s focus on our mission and crypto ethos has attracted many of the most talented crypto experts in the world. Before you apply, please read the page to learn more about our internal culture, values, and mission. We also expect candidates to familiarize themselves with the Kraken app. Learn how to create a Kraken account . As a fully remote company, we have Krakenites in 70+ countries who speak over 50 languages. Krakenites are industry pioneers who develop premium crypto products for experienced traders, institutions, and newcomers to the space. Kraken is committed to , , and through our products like , , , and _. Become a Krakenite and build the future of crypto! Join our Exchange team and start building the internet of money. The Exchange team is responsible for everything to do with the trading backend services such as the matching engine, market data gateways, internal and external APIs, margin systems and various other trading services. The team is located globally and responsibilities are split into sub-teams, working with various tech stacks. Our teams code in C++, Go, Rust, and Python, depending on the product they are contributing to within Kraken. This role sits within the Trading Technologies sub-team, which owns the messaging and transport layer at the core of our trading infrastructure — built on Aeron for ultra-low-latency, reliable UDP messaging. You'll work directly on the systems that move market data, orders, and trade events across our exchange at microsecond scale. Develop and maintain core framework and key software components for the Kraken trading engine, with a fous on the Aeron-based messaging transport layer Design and implement low-latency, high-availability messaging solutions across unicast, multicast, and IPC transport paths Tune and profile the full system stack — CPU pinning, NUMA topology, kernel bypass, receive buffer sizing — to squeeze latency out of production infrastructure Build and extend Aeron Archive integrations for durable message replay and stream persistence Build and design solutions that mitigate risk, implement security, and protect both systems and data Write reusable, testable, and efficient code Collaborate with cross-functional teams and contribute to product roadmap accomplishment Work collaboratively on a distributed team, leveraging soft skills to effectively communicate and engage with stakeholders 5+ years experience working with modern C++ Prior experience in at least one of the following using Linux — distributed and/or highly-concurrent systems; low-latency and/or high-volume transaction environments Deep understanding of low-latency systems fundamentals: lock-free data structures, mechanical sympathy, cache-line discipline, busy-spin vs. park/wake tradeoffs Experience with Aeron or comparable messaging transports (e.g. Chronicle Queue, ZeroMQ, LMAX Disruptor) highly desirable Experience with UDP networking, multicast, and kernel-bypass techniques (e.g. DPDK, RDMA) a strong plus Familiarity with SBE (Simple Binary Encoding) or similar zero-copy serialisation formats a plus Experience profiling and optimising code (CPU, memory, network) — perf, flamegraphs, VTune, or equivalent High level of proficiency in Python, Rust, and SQL strongly preferred Demonstrated knowledge of order types, trading systems, and financial products is highly desirable Cryptocurrency/Blockchain familiarity highly preferable Proactive mindset with the ability to both prioritize tasks and adhere to aggressive deadlines BS in a technical or quantitative field Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis. Please note, applicants are permitted to redact or remove information on their resume that identifies age, date of birth, or dates of attendance at or graduation from an educational institution. We consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance. Kraken is powered by people from around the world and we celebrate all Krakenites for their diverse talents, backgrounds, contributions and unique perspectives. We hire strictly based on merit, meaning we seek out the candidates with the right abilities, knowledge, and skills considered the most suitable for the job. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgable about crypto! We may ask candidates to complete job-related skills or work-style assessments as part of our hiring process. These assessments are designed to evaluate competencies relevant to the role and are applied consistently across candidates for similar positions. Assessment results are considered alongside other relevant information, such as experience and interviews, and are not the sole basis for any employment decision. As an equal opportunity employer, we don’t tolerate discrimination or harassment of any kind. Whether that’s based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status or any other protected characteristic as outlined by federal, state or local laws. Stay in the know _ _ _ _

Legal Advisor) Minimum requirement: Qualified solicitor/barrister in the UK with some post-qualification experience in either private practice or in-house (ideally, some in-house experience is highly preferable). Senior Legal Advisor) Minimum requirement: Qualified solicitor/barrister in the UK with

Experience: A Bachelor's degree in Computer Science, Engineering, or equivalent practical experience and 3+ years of hands-on experience with core infrastructure software and distributed systems. Experience with consensus algorithms, distributed systems, and blockchain technology is highly desirable

Full time - Permanent role - UK or EU As our Head of Protocols, you will be responsible for: Owning the Kiln Validators protocols roadmap, deciding on which protocols we will support and why, including setting a strategic direction for which themes of protocols we want to invest in Managing a productive team of protocol specialists and protocol engineers who understand the intricacies of protocols, run them in testnet, and liaise with foundation teams Launching new protocols at Kiln in partnership with our GTM team, ensuring everyone is sufficiently trained on them to sell and support our clients Representing Kiln at ecosystem events and writing educational content You will collaborate closely with customers, sales teams, product, and the infrastructure team at Kiln to execute the Kiln Validators roadmap. 3+ years of professional experience in the crypto industry. Passion for the industry and following recent developments. You are addicted to crypto Twitter :) 3+ years of management experience Demonstrated ability to understand technical concepts and work well with engineering teams. You are sufficiently curious and motivated to dig into the details of projects. Analytical mind and rigorous communication. You enjoy and are good at synthesizing complex information and conveying your learnings both in oral and written format Strong product acumen, you have opinions about great products and can put yourself in the shoes of both a retail and B2B user in the staking space Ability to thrive in a fast-paced startup/scaleup environment Native or perfectly fluent in English _: discuss, don't impose. We value humility in our hires. Trust and transparent communication Curiosity and ability to dive deep into topics and follow through Genuine passion for the blockchain and cryptocurrency space Kiln is the leading enterprise-grade rewards platform that enables institutional customers to stake assets and integrate staking & DeFi functionality into their offerings. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management. With $13+ billion in crypto assets staked through our platform, Kiln has established a strong presence on Ethereum, managing over 4.3% of the network through 45,000+ validators — all with zero slashing events. Kiln serves more than 140 leading customers, including Binance, BitPanda, Bitgo, Fireblocks, VanEck, and TrustWallet. Our team of 90 ecosystem enthusiasts brings experience from industry leaders like Google, Circle, Ledger, Chainalysis, and other prominent technology and cryptocurrency companies. We've raised $30M in total funding from prominent investors including 1kx, _, Illuminate Financial, Consensys, Wintermute, Kraken Ventures... Join Kiln and help us make the web more secure, stable, decentralized, and fair! At Kiln, our _ drive us: Technical Excellence ensures top security and usability; Innovation-Driven Meritocracy elevates groundbreaking ideas; Trust and Transparency build reliability through open communication; and People First keeps our team and clients at the heart of everything we do. A fast-paced, bureaucracy-free work environment Equity share options in the business: if Kiln succeeds, we all succeed! Competitive salary Flexible holiday Flexible remote working Choose your IT equipment Internet connection : €50/month Significant personal development budget (books, training) Overseas tech conferences budget Kiln is an Equal Opportunity Employer We are committed to fostering an inclusive and diverse workplace where everyone is valued and respected. We welcome applications from all backgrounds, including women or persons with disabilities. Our thorough process ensures the best fit for both you and Kiln, and we strive to make each step valuable and efficient. Recruiter Interview (45 min) Take-home test (< 3 hours) Technical Interview (60 min) Core Values Interview (45 min) Founder Interview (30 min) Offer! Your personal information will be securely stored in our Applicant Tracking System (ATS) and will not be shared with external parties. We comply fully with GDPR regulations to protect your data and privacy. Please note that we do not sponsor visas for persons without work authorization in your location. This role is for full-time employees only (no B2B or contractors). Thank you!

About Wintermute Wintermute is one of the largest crypto-native algorithmic trading companies in digital assets. We provide liquidity algorithmically across most cryptocurrency exchanges and trading platforms, a broad range of OTC trading solutions as well as support high profile blockchain projects and traditional financial institutions moving into crypto. Wintermute also has a Wintermute Ventures arm that invests in early stage DeFi projects. Wintermute was founded in 2017 by industry leaders and has successfully navigated crypto industry cycles. Culturally, we combine the best of the two worlds: the technology standards of high-frequency trading firms in traditional markets and the innovative and entrepreneurial culture of technology startups. To Wintermute digital assets is not just another asset class, we believe in the innovative potential of blockchain, the fundamental innovations, we have a long-term view on the digital asset market and are taking a leadership position in building an innovative and compliant market. Read more _ Working at Wintermute We are looking for a C++ Quant Developer who is passionate about technology, interested in both low level details of how computer hardware operates and high-level design of large systems, as well as in data infrastructure. Someone who likes opening the hood to see how things work, has understanding of data structures, experience writing client-server network applications, and writing and optimising code for high performance. We welcome your previous experience from your own personal projects as well as commercial experience. PhD in maths is not uncommon for our Quant Developers, and at least a graduate level of maths skills is required. Interest in algorithmic and quantitative trading is a plus. At Wintermute you will have an opportunity to grow and make direct impact on trading by developing and improving all the parts of the trading platform, data infrastructure and related software, while also getting advice and guidance from very experienced developers and traders, including the founders. You will get a lot of independence and responsibility right away, and you'll learn at an unprecedented speed! No legacy systems, no multiple levels of approvals, no bureaucracy; all developers report directly to CTO who is very hands on. It is up to you to make an impact! You will work alongside exceptionally sharp colleagues, learn how to write fail-safe code and improve performance and scalability of the trading system, a real challenge and a rare opportunity! We have flexible working arrangements, it’s the productivity that matters. At least several days a week in the office with our own gym, unlimited food and drinks are required. What will you work on A great advantage of this position is that it is varied, and it is also up to you to shape it in the direction that matches your talents and company needs. The focus of the role would be to create data infrastructure to bring the analytics to the next level and support the scaling of quantitative trading. Projects may also include upgrading major trading system components, designing a completely new application from scratch, working on implementation of pricing models. We will share more technical details in the interviews. You will have opportunity to improve your knowledge of software optimisations, of building robust large-scale systems and to understand crypto currency trading. \n Hard Skills requirements • At least 2 years’ experience with C++ - we will test, • Understanding networking and implementing client-server connections - we will test, • Experience with looking under the hood to see how C++ standard libraries work - we will test, • Strong analytical skills - we will test Join our dynamic team and benefit from: • Working at one of the most innovative trading firms globally., • Engaging projects offering accelerated responsibilities and ownership compared to traditional finance environments., • A vibrant working culture with frequent team meals, holiday celebrations, gaming events, and company-wide outings, including our annual Wintermute weekend getaway., • A Wintermute-inspired office in central London, featuring an array of amenities such as table tennis and foosball, personalized desk configurations, a cozy team breakout area with games and free food., • Great company culture: informal, non-hierarchical, ambitious, highly professional with a startup vibe, collaborative and entrepreneurial., • A performance-based compensation with a significant earning potential alongside standard perks like pension and private Health insurance. Note: • Although we are unable to accept fully remote candidates, we support significant flexibility in regards to working from home and working hours., • We offer UK work permits and help with relocation Find out more: • _, • _, • _, • _, • _ \n

1inch is the DeFi ecosystem building financial freedom for everyone. 1inch products help users and builders trade, hold and track digital assets - with the self-custody, comprehensive security and the intuitive user experience they need to unlock the potential of true crypto ownership. 1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond. So if you’re someone who thinks big, moves fast and wants to make an impact right from day one, then get ready to join our industry-changing team. Location: We prioritise candidates who are based in Dubai then consider those working remotely in one of our European Hub Locations (UK, Spain or Germany). We are seeking a talented Data Scientist with focus on product analytics to join our Data & Analytics team and drive data-driven decision making across our organisation. In this role, you will analyse complex datasets, conduct research, and provide valuable insights to support product strategy and business growth. You must have Data Science experience. • Analyse and interpret large-scale on-chain and off-chain datasets to inform business decisions, • Design and maintain data collection processes and event storage systems, • Conduct research to identify patterns, trends, and growth opportunities, • Create intuitive dashboards and data visualisations for internal teams and external partners, • Propose and test hypotheses with empirical evidence, • Monitor and evaluate product metrics and user behaviour patterns, • Present findings and recommendations to stakeholder, • 3+ years of experience in data/product analytics, • BS in Computer Science, Engineering, Statistics, or related field, • Design and maintain data collection processes and event storage systems, • Conduct research to identify patterns, trends, and growth opportunities, • Experience creating intuitive dashboards and data visualisations for internal teams and external partners, • Excellent communication skills with ability to present complex findings to diverse stakeholders, • Proficiency in creating data visualizations and building analytical dashboards (Mixpanel, Metabase), • Intermediate SQL, Python knowledge, • Familiarity with A/B tests and Casual Inference, • Understanding of product analytics and user behaviour analysis, • Crypto/Web3 analytical stack (Dune, Nodes, Flipside), • Low level blockchain data understanding (traces, events), • Experience in uncovering business-driving data insights, • Join a young, creative team in a fast-paced and supportive environment, • We’re open to new ideas — if you’ve got a vision, pitch it and make it happen, • Enjoy competitive pay that matches your skills and experience, • Be part of a company that’s shaping the future of DeFi, • Take time when you need it — we offer unlimited vacation days, • Get fully compensated for your work gear — we’ll set you up for successWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

1inch is the DeFi ecosystem building financial freedom for everyone. 1inch products help users and builders trade, hold and track digital assets - with the self-custody, comprehensive security and the intuitive user experience they need to unlock the potential of true crypto ownership. 1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond. So if you’re someone who thinks big, moves fast and wants to make an impact right from day one, then get ready to join our industry-changing team. Location: We prioritise candidates who are based in Dubai then consider those working remotely in one of our European Hub Locations (UK, Spain or Germany). 1inch is seeking a Head of DevOps to spearhead our infrastructure and platform engineering department. This is a pivotal leadership position where you will transform traditional infrastructure support into a world-class platform engineering function. You will lead a dedicated team of engineers to build resilient, multi-cloud environments that empower our developers to deploy and manage services independently. By balancing strategic vision with technical rigour, you will ensure our global decentralised systems remain secure, scalable, and exceptionally reliable. • Strategic Leadership: Define and execute a DevOps strategy that aligns infrastructure growth with 1inch’s business objectives., • Team Development: Lead, mentor, and scale a high-performing engineering team while fostering a culture of automation and accountability., • Infrastructure as Code: Oversee multi-cloud Kubernetes clusters and ensure all environmental changes are managed via automated IaC and GitOps., • Developer Enablement: Standardise deployment processes and build self-service tools for secrets management and infrastructure provisioning., • Service Reliability: Define and implement SLIs, SLOs, and SLAs to ensure the stability and performance of critical services., • Observability & Incident Management: Oversee the full monitoring stack and establish formal incident response and post-mortem processes., • Security & Compliance: Enforce "security by design" and maintain strict adherence to ISO 27001 and SOC 2 regulatory frameworks., • Cost & Efficiency: Lead infrastructure consolidation initiatives and monitor cloud expenditure to identify strategic cost-saving opportunities., • Leadership Experience: 8+ years in DevOps/Infrastructure with 3+ years in a management role., • Proven Track Record: Experience scaling DevOps teams in fast-paced, high-growth tech environments., • Kubernetes Expertise: Deep knowledge of cluster management, networking, and security., • Automation Mastery: Extensive experience with Terraform (IaC) and GitOps practices., • Cloud Architecture: Proficiency in managing multi-cloud environments (AWS, Hetzner, GCP)., • Technical Depth: Strong understanding of service mesh and microservices architecture., • Observability: Solid experience with observability tools for metrics, logging, and tracing., • Security Mindset: Practical experience implementing security best practices within CI/CD., • Communication: Ability to articulate complex technical concepts to non-technical stakeholders., • Strategic Mindset: Balanced approach between long-term strategy and hands-on problem-solving., • Platform Engineering: Building developer-centric tools to increase engineering velocity., • Cloud Governance: Managing multi-provider cloud footprints and resource optimisation., • Incident Response: Leading high-pressure incident resolution and system recovery., • Mentorship: Coaching senior engineers and developing future technical leaders., • Process Design: Crafting standardised, scalable engineering workflows., • Web3 Infrastructure: Specific experience in blockchain or decentralised finance (DeFi)., • Event-Driven Systems: Knowledge of message brokers such as Kafka or NATS., • Chaos Engineering: Experience with resilience testing and fault-injection practices., • Edge Computing: Familiarity with CDN optimisation and edge-based service delivery., • Ecosystem Knowledge: Strong understanding of 1inch protocols and the Web3 landscape., • Join a young, creative team in a fast-paced and supportive environment, • We’re open to new ideas — if you’ve got a vision, pitch it and make it happen, • Enjoy competitive pay that matches your skills and experience, • Be part of a company that’s shaping the future of DeFi, • Take time when you need it — we offer unlimited vacation days, • Get fully compensated for your work gear — we’ll set you up for successWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Bitfinex is a digital asset trading platform offering state-of-the-art services for digital currency traders and global liquidity providers. Founded in 2012, Bitfinex was one of the first professional platforms set up to accommodate for the booming interest in cryptocurrency trading. Since then, our team has gained invaluable experience whilst cementing our spot as the go-to platform for digital asset traders and institutions. Our Mission Our aim is to create a free and accessible global digital economy by disrupting the current financial services industry. Our team is entirely remote, composed of individuals with an ownership mentality; no one waits to be told what to do. Each member of the team is a highly motivated self-starter that is comfortable with autonomy and believes in lifelong learning. When we’re not working, we’re dreaming about it. We place our egos aside and thrive within a culture that fosters one another from the birth of a concept to launch of a product. At Bitfinex you have the freedom to work as you please - all that matters is execution. Join us and help lay the foundation for a decentralized future. Currently looking for: Senior Backend Developer [Remote] Key responsibilities As a senior Backend Developer, you will be a part of the team that works on the development of the backend components of all Bitfinex Services (main trading application, Bitfinex Pay, Lightning Network support, Blockchain integrations, ….). This includes: New Products and Features - Bitfinex continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry. Scalability - all backend services that power Bitfinex platform must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth. A good example are the renown Bitfinex API, the most solid, low-latency and complete in our industry. Security - Bitfinex makes Security its most important feature. The Backend Development team is responsible for building all the API services and backend processes with the highest security principles and standard, in order to protect the safety of the entire user base. • 6+ Years of Node/JavaScript experience Familiar with microservices architecture Have actively participated in the development of a complex platform Good experience in interacting with databases (MySQL, MongoDB) Ability to quickly learn new technologies Good understanding of security practices Nice to have Experience with blockchain integration Comfortable with high-availability concepts Ruby, Rust or C++ skills are a plus Other technologies of interest: Message queues (Redis), Caches and Job Queues

Full-time - London - Permanent role - salary + stock options As a GTM Talent Partner, you will join our People department composed of 6 people, supporting Kiln’s growth across the EMEA, APAC and Americas regions. You will report to our VP People, and you will be the trusted and dedicated advisor to all GTM leaders, while owning the full-cycle recruitment processes to shape the future of Kiln's workforce for our Sales, Customer, Partnership and Marketing teams. Responsibilities Talent Acquisition Own and run the full recruitment lifecycle for GTM roles including : Account Executives, Sales Development Representatives, Customer Success Managers, RevOps, Solution Engineer, Product Support... Partner closely with hiring managers across our GTM teams (Marketing, Customer, Partnerships, Sales, Technical Sales) to deeply understand role requirements and build efficient, scalable hiring strategies. Actively participate in market mapping and competitive intelligence for GTM talent. Proactively reach out to passive candidates using multi-channels strategy (online and IRL) Build and maintain proactive sourcing strategies (inbound and outbound), including talent pools for priority roles. Attend relevant industry conferences and events to grow networks and build Kiln's presence in the GTM talent market. Candidate Experience: Provide a world-class candidate journey—from the first touchpoint through to onboarding. Deliver thoughtful, constructive feedback to both candidates and internal teams to support process improvement. Collaborate with Marketing to create and share engaging employer brand content that highlights Kiln’s culture, mission, and EVP. Champion Kiln’s presence in tech communities through social content, thought leadership, and talent advocacy. RecOps: Maintain accurate ATS data, ensuring clean candidate records, stages, and notes. Continuously audit sourcing pipelines and recruitment strategies for quick wins and long-term improvements. Track, analyze, and report on recruiting metrics including funnel health, conversion rates, time-to-hire, and source performance. Own GTM scorecard usage and help hiring teams calibrate effectively. Tools: Ashby, LinkedIn Recruiter, Notion, Slack Requirements 6+ years experience in full-cycle recruitment, including at least 2 years in-house at a high-growth tech startup (Web3, AI, SaaS, or similar). Proven success hiring GTM roles (AE, SDR, CSM, VP Sales, Growth, RevOps, etc.). Strong sourcing capability across: inbound and outbound channels online (Linkedin, boolean search…) and IRL (event, networking…) strategies Deep understanding of revenue-oriented metrics and how GTM roles drive business outcomes. Experience using modern ATS platforms (Ashby preferred). Fluent/native English speaker (spoken and written). Nice to have: Experience hiring in blockchain, crypto, or Web3 companies. Familiarity with global recruitment practices across Europe, North America, and Asia. Experience working in a fast-growing startup environment (Series A–C). Passion for employer branding and building diverse teams. Kiln is the leading enterprise-grade rewards platform that enables institutional customers to stake assets and integrate staking & DeFi functionality into their offerings. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management. With $11+ billion in crypto assets staked through our platform, Kiln has established a strong presence on Ethereum, managing over 5% of the network through 45,000+ validators — all with zero slashing events. Kiln serves more than 140 leading customers, including Binance, BitPanda, Bitgo, Fireblocks, VanEck, and TrustWallet. Our team of 85+ ecosystem enthusiasts brings experience from industry leaders like Google, Circle, Ledger, Chainalysis, and other prominent technology and cryptocurrency companies. We've raised $30M in total funding from prominent investors including 1kx, Crypto.com, Illuminate Financial, Consensys, Wintermute, Kraken Ventures... Join Kiln and help us make the web more secure, stable, decentralized, and fair! At Kiln, our _ drive us: Technical Excellence ensures top security and usability; Innovation-Driven Meritocracy elevates groundbreaking ideas; Trust and Transparency build reliability through open communication; and People First keeps our team and clients at the heart of everything we do. A fast-paced, bureaucracy-free work environment Equity share options in the business: if Kiln succeeds, we all succeed! Competitive salary Flexible holiday Flexible remote working Internet connection : €50/month Significant personal development budget (books, training) Overseas tech conferences budget Our thorough process ensures the best fit for both you and Kiln, and we strive to make each step valuable and efficient. Recruiter Interview (45 min) Take-home test (< 3 hours) Technical Interview (60 min) Core Values Interview (45 min) Founders Interview (30 min) Offer! Your personal information will be securely stored in our Applicant Tracking System (ATS) and will not be shared with external parties. We comply fully with GDPR regulations to protect your data and privacy. Please note that we do not sponsor visas for persons without work authorization in France. This role is for full-time employees only (no B2B or contractors). Thank you!

A fintech company in Belfast is looking for a Senior Software Engineer to help build the future of tokenization.

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Belfast is seeking a VP of Engineering to lead and scale its engineering organization.This role requires a strategic and hands-on leader to define the engineering roadmap and ensure technical quality while fostering a culture of execution and continuous improvement.The ideal candidate has over 10 ye