C developer jobs in Reino Unido

Core C++ Developer | London | HFT Crypto Team | Up To £200k + Bonus.We are currently working with a global digital asset trading and invest firm focused on cryptocurrency markets, systematic trading and venture investing.You will be an exceptional C++ developer responsible for the optimization of c

C++ Developer / Technical Lead (Windows C / C++, C#) London to £115k FTC.Are you a skilled C++ Developer with technical / team leadership skills looking for a new opportunity? You could be progressing your career in a senior, hands-on role at a global market data provider.As a C++ Developer / Techn

NET Developer – Financial Systems Developer.A leading Japanese IT company with a central London office is seeking a C#.NET Developer for its Financial Systems Team.They welcome candidates with knowledge of banking, securities, or insurance operations, and experience developing with C#.Ideal candid

Quantitative Developer – C# / Python. Join a leading quantitative research and trading firm using heavy compute and modern engineering to tackle some of the hardest problems in systematic finance. Interest in quantitative finance and how engineering accelerates research and trading.

A high-quality hedge fund is building out its quantitative risk and portfolio analytics capability and is looking to hire a Quant / Quant Developer to work directly with the CRO and Portfolio Managers in the risk and investment team. This is a hands-on, build-the-platform role focused on real decision support - not a reporting, model validation, or back-office risk seat. What you’ll be doing • Build PM-facing portfolio risk & analytics tools Design and run: • Stress tests & scenario analysis, • VaR & Credit VaR, • Tail risk & drawdown analysis Develop tools to: • Understand portfolio risk, • Support hedging decisions, • Explain P&L and risk drivers, • Work directly with PMs on:, • Portfolio construction, • Risk allocation, • Forward-looking scenario analysis, • Backtest strategies and trade ideas, • Help build a scalable, institutional-grade risk & analytics platform Tech & skills • Strong Python (core development language), • Good OOP / engineering discipline, • Experience building:, • Analytics libraries, • Research frameworks, • Portfolio or risk tooling, • Excel / VBA useful but not core, • C# a plus Background • 2–5 years experience as:, • Desk Quant, • Risk Quant, • Quant Developer, • Portfolio Analytics Quant, • Strong academic background in:, • Maths, Physics, Engineering, or Computer Science, • Comfortable working directly with PMs and front-office teams Asset class exposure (nice to have) • Credit, • EM, • Rates, • Multi-asset portfolios Why this is interesting • Middle-to-Front-office, PM-facing role, • Real ownership of the analytics & risk stack, • High impact on how the portfolio is built and hedged, • Not a back-office or reporting function

Strong computer science fundamentals.

Background in quantitative finance or trading environments preferred.

C++ Developer - Strategy Implementation & Alpha Signal Engineering We are currently working with a leading global quant fund that's scaling its Strategy Implementation and Development Desk - a high-impact team operating at the intersection of quantitative research and real-time execution. They are seeking high-performance C++ developers to work on signal implementation, execution algorithms, and real-time alpha-capturing models. This is a speed-critical environment where your code directly impacts trading outcomes. Responsibilities: • Design and implement real-time trading strategies and execution algorithms in C++20, leveraging GCC 12., • Collaborate closely with quantitative researchers to translate models into production-ready code., • Optimise systems for ultra low latency, throughput, and determinism., • Monitor and improve live trading performance, identifying bottlenecks and tuning systems. Requirements: • Strong proficiency in modern C++ (C++17/20) with a deep understanding of performance optimisation., • Experience with GCC 12 or similar toolchains that support C++20 features., • Solid understanding of low-latency systems, multithreading, and memory management., • Background in real-time systems, high-frequency trading, or performance-critical applications. If this sounds interesting, please apply for more info

🎓 Graduate Software Developer / Quantitative Developer / Quantitative Researcher 📍 Location: London (Hybrid) 💷 Compensation: Up to £180,000 + Bonus + Benefits 🏢 Client: Prestigious Trading Firm 🚀 Kickstart Your Career in Technology & Quantitative Finance Just graduated and ready to launch your career at the intersection of technology, mathematics, and finance? Join an elite global trading firm where innovation drives everything — no legacy systems, no bureaucracy, just cutting-edge tech and world-class mentorship. You’ll work on greenfield projects from day one, collaborating with exceptional engineers, quants, and researchers to build the systems and models shaping the future of global trading. 🔧 What You’ll Do • 🧠 Design and enhance advanced trading systems and analytics platforms, • 📊 Develop and implement your own quantitative models and research ideas, • 🤝 Collaborate closely with top technologists, quants, and portfolio managers, • 🚀 Learn fast, build fast: develop technical and analytical expertise in a performance-driven culture ✅ What You’ll Bring • 🎓 Degree in Computer Science, Mathematics, Physics, Engineering, or another STEM discipline, • 💻 Strong programming skills in Python, C++, Java, C#, or KDB+/Q, • 🔍 Analytical mindset with a passion for tackling complex, data-driven challenges, • ⚡ Curiosity, drive, and the ability to thrive in fast-paced, intellectually demanding environments 🌟 Why Join • 🌍 Greenfield Work: Contribute to high-impact projects from day one, • 🧠 Exceptional Mentorship: Learn from world-class engineers and quantitative researchers, • 🛠 Cutting-Edge Tech: Access the latest tools, infrastructure, and computing resources, • 📈 Fast Career Growth: A meritocratic culture that rewards innovation and initiative If you’re a motivated STEM graduate eager to make an immediate impact in high-performance technology or quantitative finance, we’d love to hear from you. 📧 Apply now or reach out to me directly:

Role: Software Developer (C++) – Up to £120,000 + Bonus + Package Salary: Up to £120,000 + Bonus + Package Location: London (Hybrid Working) Skills: C++ as a main language This firm is an elite tech firm with exceptionally high standards that has previously set world records in the technology space. They are made up of some exceptionally talented individuals who, above all, are passionate about using the latest and greatest technology and pushing it to the absolute limits. They’ll find the best team to suit your skillset and interests, but you will be working on: • Software Engineers are treated as the company’s #1 asset, • Low attrition rate – people working there genuinely love what they do, • Very friendly, tight-knit environment, • Flat structure, with a clear and transparent progression route

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS product—Spark Travel—at pace. You’ll join a smart, collaborative team that pushes each other to articulate and defend every architectural decision in pursuit of best‑in‑class software. Spark Travel itself is on a mission to drag the tailor‑made travel industry into the 21st century. Our cloud‑native platform unifies sales, supplier contracting, dynamic pricing, and on‑trip operations—everything from the first quote to the traveller’s safe return. The market is huge, the incumbents are slow, and we already have meaningful traction: roughly 35 customers and an accelerating sign‑up pace, a very healthy sales pipeline, and a roadmap brimming with genuinely novel features. With a fantastic existing team across engineering, product, customer success, marketing, and sales, we’re gearing up for hyper‑growth. We’re looking for two down‑to‑earth professional, a conscientious Senior Software Developer, to build on what already works and unlock our next wave of innovation. 🌟 Your Impact • Raise the bar sensibly. Whether you’re refining our Azure architecture as CTO or shipping revenue‑critical features as Senior Dev, you’ll set high standards without reinventing the wheel., • Champion intuitive user experiences. Both roles care deeply about usability, ensuring our platform feels effortless for travel pros and their travellers., • Own the craft. Understand the problem, ship the solution, measure the outcome—and when something’s working, double‑down on it., • Move the needle. Your work will streamline the day‑to‑day of leading tailor‑made tour operators and DMCs—enhancing trip experiences for their travellers as we scale. 🧭 Role Snapshot 2️⃣ Senior Software Developer • Be UK‑based (remote within the UK) with ability to attend occasional team meet‑ups in London (travel expenses covered)., • Design, build, and maintain features across the stack: .NET (C#) based API backends, Angular (TypeScript) based frontends, SQL Server, Cosmos DB., • Own mission‑critical modules such as pricing engines, itinerary or form builders, client proposal app, etc., • Write clean, tested code; automate everything from CI/CD pipelines (Azure DevOps/GitHub Actions) to performance benchmarks., • Investigate and diagnose issues and perform root cause analysis., • Collaborate cross-functionally with Product, Design, and Customer Success., • Propose incremental improvements and occasionally explore new tech (e.g. Azure OpenAI) when it clearly solves a problem. You might be our Senior Dev if… - Hold a 1st-class or 2:1 degree in Computer Science or a closely related discipline. - 4+ years building modern web or data applications with .NET and at least one JavaScript framework. - Hands-on experience with Azure or another major cloud provider, plus an understanding of microservices and event-driven architectures. - You love balancing delivery speed with technical excellence, and you’re keen to keep learning. 🎁 What We Offer • Competitive salary, equity options coming soon, • Remote‑first culture with asynchronous workflows, • Private healthcare, • Employer pension contributions above statutory, • Home‑office setup budget, • Coworking space allowance, • Flexible hours with async core overlap, • Professional‑development budget, • Conference & certification leave, • Choose‑your‑own‑tech toolkit, • Travel‑to‑London expenses for required in‑person meetings, • Collaborative and innovative company culture 📩 How to Apply • Send your CV., • Confirm you are currently living and legally able to work in the UK., • Share one project or decision you’re proud of, why it mattered, and what you learned. Please note: We are only considering UK‑based applicants who fully meet the role criteria. Applications that do not comply will not be considered now or in future hiring rounds. Deadline: 15th November 2025 (rolling review—apply early). Spark Travel is an equal‑opportunity employer and a welcoming neurodiverse team. We celebrate diversity and are committed to creating an inclusive environment for all. We’re not just saying that, we really mean it!

Join as a visionary Full Stack Developer, leading transformative development with integrated solutions across front and back-end, bridging the technology-business gap and shaping the future with innovative user experiences. Join as a Full Stack Developer and lead transformative development, crafting innovative solutions across front and back-end with integrated services and APIs. Embrace your leadership role, creating conceptual architecture to meet precise client needs, while bridging the technology-business gap with exceptional communication. Elevate your career in this dynamic journey of Full Stack Development, shaping the future and making a lasting impact on clients. Together we do what matters. Key responsibilities • Analyze, design, develop, implement and maintain application code in a variety of contexts, • Use .NET and Azure ecosystem to build scalable applications which power modern framework-driven web apps., • Build and automate the features and services that model complex business problems, power enterprise-scale systems and drive innovative user experiences, • Implement APIs and Microservices through database design, data access and ORMs and consume said APIs to build feature-rich applications, • Develop scalable and cloud-based solutions, with consideration to security and performance, • Programming: C# / .NET, JavaScript/TypeScript, • Service Development: building web applications and web APIs using .NET and cloud services, • Cloud: Azure and others, • Database: (worked with one or more of) SQL Server, Azure SQL, Entity Framework, Cosmos DB, • Design & Style: HTML5, Responsive/Adaptive Design, CSS3, Bootstrap, • Frameworks: (Worked with one or more of) Angular, React, NodeJS, Vue.js, or equivalent JavaScript, • DevOps: Git, Azure DevOps, GitHub, • Nice to haves: Azure AI Foundry, Semantic Kernel or Autogen Characteristics that can spell success for this role • Embrace challenges with passion and a thirst for knowledge., • Collaborate seamlessly, fostering open and effective communication., • Embrace creativity and explore groundbreaking solutions.

.Net Developer Hybrid working - London £650 Outside IR35 Key Responsibilities: • Design, develop, and maintain robust .NET applications and platforms with a focus on integrating and managing data workflows., • Establish and enforce security protocols based on privacy requirements, ensuring all data handling conforms to regulatory and company standards., • Strong experience with Kubernetes for orchestrating containers, managing service discovery, scaling, load balancing, and self-healing of applications., • Skilled in integrating containerized applications with continuous integration and continuous deployment (CI/CD) systems, enhancing the automation and monitoring of build and release processes., • Knowledgeable in the configuration of Kubernetes resources such as pods, services, deployments, and replicasets, to ensure optimal resource utilization and performance of applications., • Familiarity with network configurations in a Kubernetes environment, including ingress, network policies, and service meshes., • Maintain and optimize existing .NET applications and data processes in production environments., • Collaborate closely with data engineers and data scientists to support the development of scalable AI and data systems, • Optimize existing data handling and application frameworks to enhance the development and performance of data-driven projects., • Take full ownership of assigned projects from initial requirement gathering to the design, development, and maintenance of deployed solutions., • Experience with CI/CD pipelines using tools like Azure DevOps or Jenkins, ensuring reliable deployment and operation of software solutions., • Work effectively in a hybrid cloud environment, utilizing cloud services and infrastructure to maximize application performance and scalability across multiple platforms. Required skills • 8+ years’ experience in C# .net, • Experience working with microservices architecture, • Hands on experience with Docker, Kubernetes and Helm Chart, • Hands on experience with IaC using Terraform or similar, • Experience working in a cloud environment – Azure, AWS or AliCloud, • Working in Agile Project environment, • DevOps CI/CD experience, • Working closely with business analyst and, data engineers, • Knowledge and experience of Test Drive Development, • Good hands-on experience with SQL

Junior Quant Developer – Multi-Strategy Systematic Trading Location - London (or NYC) A leading investment firm specialising in multi-strategy systematic trading is seeking a Junior Quant Developer to join its front-office execution team in London. The firm integrates diverse strategies across asset classes to capitalise on market opportunities. As a Junior Quant Developer (0–4 years of experience), you will: • Develop and enhance high-performance trading systems., • Optimise execution algorithms for systematic trading., • Contribute to research and simulation frameworks. Key Requirements • Bachelor's degree in Computer Science or closely related field, • Interesting internship(s) within trading, • Proficiency in C++ or Python (the firm’s tech stack includes both)., • Strong problem-solving and analytical skills., • Ability to work in a fast-paced, collaborative environment. This opportunity offers a competitive compensation package and hybrid working model.

please note that this is a job that involves relocating and working on-site in Dubai Unity Developer Role Overview We are looking for a skilled Unity Developer to join our iGaming studio and help build high-quality, engaging casino and gambling games. You will work closely with designers, artists, and product teams to develop performant, scalable, and visually polished games, with a strong focus on gameplay logic, UI, and live-ops features. Key Responsibilities Game Development • Develop and maintain iGaming titles using Unity (C#)., • Implement core gameplay mechanics, game states, and feature logic., • Integrate 2D/3D assets, animations, and visual effects into Unity projects., • Build responsive, user-friendly game UI using Unity UI systems., • Implement transitions, animations, and visual feedback to enhance player experience., • Integrate backend services, APIs, and third-party SDKs (payments, analytics, ads, CRM)., • Support live-ops features such as promotions, events, bonuses, and configuration updates., • Optimize memory usage, loading times, and frame rates., • Debug and resolve performance issues and bugs., • Collaborate with artists, animators, and game designers to deliver polished content., • Participate in code reviews and maintain clean, reusable code., • Strong experience with Unity and C#., • Solid understanding of game architecture and object-oriented programming., • Experience developing 2D games (knowledge of animation systems is a plus)., • Familiarity with version control systems (e.g. Git)., • Ability to work in an agile, fast-paced production environment.

Core Developer (Python) - Algo Trading Firm - London - Up to £350k+ TC (DOE) One of London's most impressive Algo Trading firms is looking for Engineering Wizards to join their team in London. Having arguably one of the best technology teams in the world, the firm is in a stage of hypergrowth, looking to deliver on its ambitious plans to be a leading liquidity provider in the market. The firm is renowned for its advanced tech and above-market-rate compensation (made ~40 of its staff millionaires in the last 2 years). In the role, you would be focusing on highly scalable distributed systems, working directly with the Lead Core Developer, the CTO and other various internal stakeholders. The system you would be designing and the building will be written on Linux, in Python, but will communicate with the C++ Stack. The focus will be on building a very high-performance system dealing with 100M+ transactions daily. Requirements: • Excellent Python skills with a good understanding of relevant libraries., • Significant system design and architecture knowledge for highly distributed systems., • Ability to design, build and optimise high-performing Python systems from scratch., • Previous experience building/upgrading SQL databases would be highly desirable., • Good knowledge of source versioning systems, • BSc in Computer Science or similar STEM subject. We encourage you to apply even if you think you may not currently fit all these requirements – so long as you have proven academics and are willing to work hard and learn, we want to hear from you. Note: if you haven't received a reply within 3 days, your application was unfortunately not accepted. Core Developer (Python) - Algo Trading Firm - London - Up to £350k+ TC (DOE)

Looking to Escape the Hustle and Bustle of City Life? Imagine building high-impact digital platforms – from a beautiful rural location, with a relocation bonus to help make it happen. If you’re an experienced Technical Architect or Software Architect ready for a fresh start in a quieter part of the UK, this could be your perfect move. Our client is offering a full-time, permanent position, based 2–3 days a week onsite in a rural UK location – far from traffic jams, noise, and high living costs. To support this move, a relocation package is available to help you transition smoothly into your new lifestyle. This is a rare chance to combine career-defining work with a more relaxed, balanced way of life. Why This Role is Great • Shape the technical future – Lead architectural decisions that underpin the next generation of high-traffic ecommerce and subscription platforms., • Get hands-on when it counts – Roll up your sleeves when needed, but operate at a strategic level too., • Guide the stack evolution – From CMS migrations to payment integrations, you’ll work across the tech landscape., • Mentor and inspire – Support a small in-house team, embedding strong DevOps, testing, and agile principles., • Deliver real-world impact – Contribute to platforms that are used and relied on by millions of people across the UK. What You’ll Be Working With You’ll take ownership of major projects, including: • Designing scalable architecture across AWS and .NET environments, • Leading a CMS migration to a new version of Kentico, • Building and modernising subscription models, ecommerce journeys, and complex pricing structures, • Integrating with platforms like Stripe and wider business applications, • Ensuring performance, security, and maintainability across all technology layers About You This role is ideal for a current Software Architect, Technical Architect or Senior Developer/Tech Lead looking to step into a broader, more strategic role. Your experience might include: • Strong background in .NET, C# and AWS architecture, • Experience with ecommerce or subscription platforms, • Solid understanding of scalability, cloud infrastructure, and user-centric design, • A collaborative, mentoring approach to team leadership, • Comfort working with senior stakeholders to influence direction The Location & Lifestyle This role is based in a rural part of the UK, within easy reach of countryside walks, peaceful views, and a healthier pace of life. It’s a refreshing change from the typical city-centre tech roles – offering space to breathe and think, without sacrificing meaningful, challenging work. You’ll need to be onsite 2–3 days a week, so a willingness to relocate is essential – but you’ll be supported in doing so with a relocation bonus to make the move as smooth as possible. Salary & Benefits • Competitive salary of £80,000 to £120,000 (depending on experience), • Relocation support to help you settle in, • Generous bonus scheme and company pension, • Cashback healthcare plan, • Free membership to a local leisure and golf club, • Cycle to Work scheme, • Hybrid working, supportive leadership, and a down-to-earth company culture, • Contracting may also be considered for the right person. What’s Next? The hiring process includes: • A short video call to learn more about your experience, • A technical conversation to walk through architectural thinking and decision-making, • An onsite visit to meet the team and take part in a short technical and personality task Please note: Unfortunately, visa sponsorship is not available for this position. We’re Committed to Inclusive Hiring We and our client believe diversity of background, thought and experience makes teams stronger. If you’re passionate about technology architecture and excited by this opportunity, we’d love to hear from you – even if you don’t meet every requirement listed. Apply now and take the first step towards a more rewarding role – and a more relaxed pace of life.

We are partnered with a leading fixed income hedge fund in London seeking a talented C# Developer to join their front-office technology team. The fund has a strong and consistent performance track record and has invested heavily in its quant and tech capabilities as part of a wider growth plan. You’ll work closely with the quant team as well as traders and other front office stakeholders to build and enhance core trading systems, research tooling, and data-driven applications. Projects span proprietary trading system development, front-office tools, and the application of machine learning across the investment process. The environment is fast-paced, collaborative, and a highly technical one where code quality and low latent systems are a top priority. This team has a history of developing people’s careers and offers a broad and exciting range of new and existing projects for hires to get stuck into. These will consist of both back-end and front-end projects with 1 week sprints and release cycles, PR review processes and continuous development to master. This is a team we have worked with for a number of years and have a close, direct working relationship with the CTO. We have placed in the team multiple times so are able to go into detail regarding set up of the team and role The team primarily uses C# for core systems and Python within quant and data teams. C# and .Net experience and knowledge are essential for this role, but the fund will consider exceptional candidates who work with other likeminded OOP languages (C++, Java, Go). When it comes to financial markets experience, there is a particular interest in Fixed Income and Rates, but these are not essential, they will be open to other asset classes. If you are working in a front office environment or experienced with business critical and very low latent systems, then this role could be a good fit. The fund looks for low-ego, high-performing self-starters who enjoy ownership, teamwork, and delivering pragmatic, commercial solutions. The CTO is particularly interested in candidates that are passionate about technology and want to grow and learn within a fast paced and highly performant environment. You’ll have direct exposure to PMs, quants, and the CTO, and will contribute across design, architecture, and production support. Requirements: • Strong academic background in Computer Science or related field, • Excellent programming skills in C# and .Net, • Experience working with large data sets, • 1–5 years’ experience in a relevant software engineering role, • Interest in finance; fixed income or systematic experience a plus, • Positive, pragmatic, and collaborative mindset This is a rare opportunity to join a high-performing, technology-driven hedge fund with a genuinely collegiate culture. Due to demand, this role is advertised anonymously. If preferred, submit a blank application and we will contact you before requesting a CV. We can only respond to highly qualified candidates.

At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And we get to do the best work of our career and grow our skills surrounded by colleagues who have our backs. If you’re ready to see your impact and unlock incredible career growth opportunities, join us, and build real world value. THE WORK: RippleX is dedicated to empowering the builders of tomorrow on the XRP Ledger (XRPL), one of the world’s fastest and most reliable public blockchains. We believe in democratizing the digital economy by providing practical support, empowering a community of developers, and offering the expertise of a visionary technology company. The XRPL is a decentralized, public blockchain led by a global community of businesses and developers looking to solve problems and create value. Proven reliable over more than a decade of operation and closing over 90 million ledger, the XRPL offers streamlined development, low transaction costs, high performance, and sustainability. We are looking for a senior engineer to help us maintain this high technical bar, while building innovative solutions to ensure the XRPL can power the growing needs of the global digital economy. WHAT YOU’LL DO: • Increase the capabilities, performance, scalability, and reliability of the XRP ledger., • Participate in the full software development lifecycle, including architecture, technical design, C++ development, bug fixing, as well as functional and performance validations., • Be part of the open-source XRP ledger community, setting high standards for coding, testing, and deployment., • Bachelor’s in computer science or similar, and 8+ years of software product development experience using C++., • Strong experience with large scale distributed systems development and architecture., • Prior team leadership and mentorship experience., • Passion for blockchain technology and its potential benefits., • Ability to learn new technologies and languages quickly., • Ability to independently solve highly complex problems with creative solutions. WHO WE ARE: Do Your Best Work • The opportunity to build in a fast-paced start-up environment with experienced industry leaders, • A learning environment where you can dive deep into the latest technologies and make an impact. A professional development budget to support other modes of learning., • Thrive in an environment where no matter what race, ethnicity, gender, origin, or culture they identify with, every employee is a respected, valued, and empowered part of the team., • In-office collaboration for moments that matter is important to our culture, and we give managers and teams the flexibility to decide which 10+ days a month they come in., • Bi-weekly all-company meeting - business updates and ask me anything style discussion with our Leadership Team, • Competitive salary, bonuses, and equity, • Competitive benefits that cover physical and mental healthcare, retirement, family forming, and family support, • Employee giving match, • R&R days so you can rest and recharge, • Generous wellness reimbursement and weekly onsite & virtual programming, • Generous vacation policy - work with your manager to take time off when you need it, • Industry-leading parental leave policies. Family planning benefits.

TechShack are working with with a high-performing quantitative trading firm building out their HFT desk. They trade globally across major liquidity venues and are hiring a Front Office Trading Systems Engineer (Rust/C++) to work on the hot path - the systems closest to trading and PnL. This is a Rust-first role (production Rust), but open to elite C++ engineers who are happy to work Rust day-to-day. Location: London preferred (hybrid). Remote considered for exceptional profiles, but priority is London-based candidates. Compensation: £150,000 - £250,000 total comp + meaningful PnL-linked upside (role and impact dependent). What you’ll work on You’ll sit with senior engineers and work directly with traders/quants to build and optimise the top layer of the stack: • Hot-path trading systems: market data → strategy interface → order generation → risk checks → routing/execution., • Tail latency / jitter work: profiling, instrumentation, removing bottlenecks, improving p99/p999 behaviour under load., • Low-latency engineering: CPU affinity, memory layout, lock-free patterns, async/event-driven systems, network behaviour., • Production outcomes: robustness, observability, and performance that holds up in live trading (not “lab only”)., • Desk adjacency: translating research/ideas into production trading behaviour alongside quants. What we're looking for • 3+ years in performance-critical systems., • Proven low-latency / HFT trading background (prop, market maker, quant fund, or equivalent)., • Strong hands-on Rust or C++ in production (Go considered if the latency story is real)., • Evidence you’ve owned meaningful parts of FO systems (not just generic infra), e.g. market data handlers, order gateway, execution/routing, pricing/risk checks, simulation/backtesting support., • Comfortable explaining what you changed, how you measured it, and the impact on latency/throughput/stability. Nice to have: • Exchange protocols (FIX, ITCH/OUCH/binary feeds, multiplexed WebSockets), colocation realities, Aeron/SBE., • Kernel bypass / DPDK / tuning Why this role • Trading desk environment (fast feedback, clear ownership)., • Real upside tied to desk performance., • Small, senior team - you’ll ship things that matter. If you’ve built front-office trading systems in production (market data / execution / risk / routing), apply to this advert or reach out directly to discuss the details on a call.

Java Developer / Software Engineer (AWS React Full Stack) London / WFH to £80k. As a Java Developer you will join a small team to build systems from the ground up, working across the full technology stack with a focus on designing, developing and deploying cloud-native microservices that form the c

C++ Developer / Backend Software Engineer (Windows C / C++, C#) London to £70k FTC Are you a skilled C++ Developer? You could be progressing your career in a senior, hands-on role at a global market data provider whilst enjoying a range of perks and benefits. As a C++ Developer you will join an Agile team focussed on building and maintaining Exchange Connectivity software systems that require real-time and low latency, maintaining data feeds and developing key underlying transport protocols for data transmission. The platform has been built with C++ and C# deploying to AWS and requires high scalability and low latency - they currently handle 40 billion messages per day. Location / WFH: You'll join colleagues in the City office three days a week with flexibility to work from home the other two days. Please note this is a 12 month Fixed Term Contract. About you: • You have C / C++ development skills on Windows OS, • You have full software development lifecycle experience, • You have a good knowledge of networking protocols e.g. TCP/IP, multicast, • You have a strong grounding in Computer Science fundamentals e.g. multi-threading, OOP, Data Structures, Design Patterns, • You're collaborative with great communication skills What's in it for you: As a C++ Developer / Backend Software Engineer you'll receive a competitive package: • Salary to £70k + bonus, • 25 days holiday, • Pension, • Life Assurance and Income protection, • Private Medical and Dental care, • Gym subsidy and wellness apps, • Cycle to work scheme, • Ability to buy stock options, • Family leave and sabbaticals, • Continuous training and career development including personalised budget, • Gain valuable finance / exchange connectivity experience Apply now to find out more about this C++ Developer / Backend Software Engineer opportunity.

Senior C++ Developer / Software Engineer (Linux SQL C++17) London / WFH to £110k Global-leading FinTech is seeking a Senior C++ Developer to take ownership of strategic enhancements on their core platform, as well as directly on bespoke client projects. The organisation is a pioneer in the field of cross-asset securities and derivatives post-trade processing technology, and have created ground-breaking, adaptable software that produces secure and scalable solutions for peak operational efficiency and optimum business performance for their clients. This is a great opportunity to accelerate your career alongside established business and technology leaders, and gain / deepen your finance experience. As a Senior C++ Developer, you'll be responsible for designing and building unique technical solutions, meeting user requirements and contributing to the evolution of the cutting-edge platform. Not only can you take advantage of working in a modern, technology-driven environment, but you will be granted a great deal of autonomy across the full development lifecycle, influencing key technical decisions and working with a highly collaborative, experienced team. Location / WFH: You'll join colleagues in the London office three days a week with flexibility to work from home the other two days. About you: • You have strong C++ development experience on Linux or UNIX, C++14 and above, • You have good SQL skills, • You're a passionate technologist who is motivated by working on cutting-edge systems and engineering complex solutions, • You're a positive, proactive team member who excels when working collaboratively, • You have a strong knowledge of software engineering best practices, • You're degree educated, having achieved a 2.1 or above in a STEM discipline, • You experience working in a financial services or trading environment What's in it for you: As a Senior C++ Developer you will receive a competitive package: • Salary to £110k, • Pension (to 9% contribution), • Healthcare, • Volunteer / charity days, • Hybrid working, • Career development and training Apply now to find out more about this Senior C++ Developer / Software Engineer (Linux SQL C++17) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

Senior C++ Developer / Engineer (C++ Rust Low Latency Trading) London / WFH to £180k+ Are you a Senior C++ Developer to progress your career and transfer your skills to Rust? You could be joining a hugely profitable High Frequency Trading firm that specialise in crypto markets and earning substantial bonuses in a senior, hands-on Senior C++ Developer role. What's in it for you: • Salary to £180k, • Bonus (c50% of base), • Pension, • Hybrid working, • Career progression Your role: As a Senior C++ Developer you will design and develop high throughput backend services for microsecond real-time risk, pricing, trading engines and market making systems, working across the full software development lifecycle using Rust (and some C++ for legacy systems). You'll collaborate with a small, talented team, problem solving and working on complex and challenging systems with interesting work. Location / WFH: You'll join the team in Central London with flexibility to work from home 1-2 days a week. About you: • You have strong backend OOP, multithreaded software engineering experience with C++ and are comfortable working with Rust going forward, • You have experience of working on high throughput, low latency systems with microseconds / nanoseconds, within a finance (or games) environment, • You have a good understanding of low level system design, Operating Systems, Networking, Socket Level programming, hardware, compilers, FPGA, • You achieved a 2.1 or above in Computer Science from a top tier university, • You are collaborative and pragmatic with great communication and stakeholder management skills, also with some leadership or mentoring experience Apply now to find out more about this Senior C++ Developer / Software Engineer (C++ Rust High Frequency Trading) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

Front Office FX Trading Technology - Global Banking & Markets A leading global investment bank is seeking a Python Developer to join its Front Office FX Options Technology team. This is a high-impact role where you’ll work closely with traders and developers to build cutting-edge, high-performance trading systems - leveraging big data and algorithmic models to analyse and predict market behaviour in real time. They’re looking for switched-on engineers who can tackle complex problems and deliver business-critical, high-visibility projects in a fast-paced, front-office environment. Key Responsibilities • Design, develop, and support pricing, eTrading, and market-making systems., • Collaborate with traders, sales, and quants to deliver performant, data-driven solutions., • Enhance trading algorithms, data pipelines, and market connectivity., • Integrate trading systems with upstream trade execution and regulatory platforms., • Work within an agile team delivering high-priority solutions under tight deadlines. Skills & Experience • Strong Python (or OO language: Java, C#, C++) development experience., • Solid understanding of data structures, algorithms, and design patterns., • Experience with SQL/NoSQL, APIs, and distributed systems., • Familiarity with agile methodologies and CI/CD tools., • Excellent communication skills and an interest in financial markets or FX trading., • Degree in Computer Science, Engineering, Mathematics, or Physics preferred. Why Join • Work directly with Front Office trading teams on next-gen algorithmic trading systems., • Gain exposure to real-time analytics, predictive modelling, and high-performance systems., • Collaborative, high-energy environment with strong growth opportunities.

NEW JOB ALERT 🚨 Associate Front Office Developer – Global Trading Firm ⚡ This is an excellent opportunity for an early-career developer to join a quantitative engineering team working closely with traders and analysts on real-time trading, valuation, and risk systems within global energy markets. You’ll gain hands-on experience building and supporting front-office software while learning directly from experienced developers and quantitative professionals. 💻 1–3 years’ experience in software development using C#/.NET, with some exposure to Python. Interest in financial markets, trading systems, or quantitative technology is essential. 🎓STEM degree 📍London 💰Competitive Base + Bonus + Excellent Benefits Highlights: 🔷 Work alongside senior developers, traders, and quantitative teams to understand requirements and deliver practical technical solutions. 🔷 Develop and enhance backend services and APIs that support pricing, valuation, and risk calculations. 🔷 Learn best practices around software design, version control, testing, and deployment in a front-office environment. 🔷 Support system releases and assist with production issues, gaining exposure to live trading operations. 🔷 Collaborate with quantitative teams on integrating analytical models into production systems. 🔷 Build a strong understanding of commodities markets and trading workflows over time.

Quantitative Developer – HFT (C++) | Ultra-Low-Latency Trading | High-Performance Systems We are looking for an experienced C++ engineer to join a high-performance trading team focused on building ultra-low-latency systems that operate at global scale. This is a unique opportunity to work on cutting-edge technology where every nanosecond counts. ⭐ The Role As part of the HFT team, you will: • Design, develop, and optimize latency-critical C++ systems for trading, market data, and infrastructure., • Work on end-to-end ultra-low-latency architectures, including kernel-level tuning, network optimization, and highly efficient system components., • Collaborate with FPGA engineers and hardware teams to integrate hardware and software pathways., • Profile and fine-tune performance across CPU, cache, and memory layers, ensuring maximum efficiency., • Contribute to the evolution of a high-throughput, front-office tech stack. 🎯 What We’re Looking For • 5+ years of experience in performance-critical C++ (C++17 or newer)., • Strong expertise in systems programming, memory management, and CPU architectures., • Deep knowledge of Linux internals, kernel parameters, and low-level profiling., • Passion for high-performance computing, networking, and hardware-software optimization., • Experience in systematic trading, HFT, or quantitative environments is a plus., • Proven ability to architect, optimize, and scale ultra-low-latency systems. 🌍 Why This Opportunity Is Exceptional • Work in a front-office, revenue-driving engineering environment., • Build and optimize state-of-the-art HFT systems across software, FPGA, and infrastructure., • Join a culture that values innovation, autonomy, and technical excellence., • Direct impact on strategy performance and technology evolution., • Opportunities to work in global offices. If you’re a C++ engineer excited by ultra-low-latency systems, HFT, and high-performance software design, this is a rare opportunity to make a tangible impact on a top-tier trading desk.

Develop and optimize compiler technologies for our RISC-V vector core, focusing on efficient code generation and optimization for graphics and AI workloads. Key Responsibilities: • Develop and maintain compiler backend for our RISC-V vector extensions, • Implement code generation and optimization passes for graphics and AI workloads, • Contribute to shader compilers for Vulkan and other graphics APIs, • Work on vectorization and auto-parallelization strategies, • Collaborate with hardware team on ISA definition and enhancements, • Benchmark and optimize compiler performance for key workloads, • 5+ years of experience in compiler development, • Strong knowledge of LLVM or similar compiler infrastructure, • Experience with code generation for vector architectures, • Understanding of graphics shader compilers and/or AI compiler stacks, • Familiarity with RISC-V architecture and vector extensions (preferred), • Strong C++ programming skills, • Background in performance analysis and optimization, • BS/MS in Computer Science or related field

C# Developer / Software Engineer (C#.Net SQL) to £180k+.Are you a technologist with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management.As a C# Developer you'll colla

As a Senior Cryptography Engineer, you’ll protect NewDay’s payment processing, customer data, and internal systems through robust, scalable cryptographic controls. You’ll design, build, and automate key management, certificate lifecycle, and HSM governance to reduce operational risk and enable secure developer self-service. This role directly supports business-critical platforms, ensuring strong security assurance across financial services at scale while helping shape NewDay’s long-term cryptographic strategy. How you’ll contribute • Key lifecycle tooling: Build, implement, and manage tooling for key generation, distribution, backup, automated rotation, and secure deletion across hybrid cloud environments., • Certificate automation: Develop self-service certificate issuance workflows integrated with CI/CD pipelines; improving self-service coverage., • PKI tooling: Maintain certificate authority infrastructure, trust store management and validation processes., • Integration patterns: Build certificate provisioning patterns for containerised applications, API gateways and service meshes., • Algorithm governance: Support migration away from deprecated algorithms through automation and developer tooling., • Cloud KMS integration: Configure and maintain integrations with Cloud KMS services., • HSM administration: Support hardware security module operations, backup procedures, key management, and disaster recovery., • Infrastructure as code: Implement cryptographic infrastructure using Terraform, CloudFormation and configuration management., • Continuous Improvement: Contributing to improving ways of working in the team. We're looking for these essential skills • Cryptographic depth: 3+ years implementing cryptographic systems; deep understanding of symmetric/asymmetric encryption, digital signatures, key derivation, PKI concepts., • Key management platforms: Hands-on experience of cloud KMS services (e.g. Azure Key Vault, AWS KMS) and/or HSM platforms (e.g. Thales, Entrust, Azure CloudHSM)., • Certificate management: Practical experience with certificate authorities, X.509 certificates, TLS/SSL configuration and automated certificate lifecycle management (e.g. AppViewX/Venafi)., • Good understanding of security and compliance frameworks and standards for cryptography, e.g. PCI-DSS, PCI-PIN, PCI-CPP, NIST, FIPS It’s a plus if you also have these skills • Infrastructure automation: Experience with IaC (Terraform, CloudFormation, Pulumi), configuration management, and CI/CD pipelines (GitHub Actions)., • Programming proficiency: Strong development skills in one or more of: Python, Go, Java, C#; ability to write production-quality automation scripts and tools., • Developer enablement: Experience building internal tools, libraries and documentation for engineering teams., • Legacy migration: Experience modernising cryptographic systems, algorithm migration and technical debt remediation.

C# Developer / Software Engineer (C# .Net SQL) to £180k+ Are you a technologist with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a C# Developer you'll collaborate with a team of highly intelligent technologists and finance professionals to develop algorithmic trading systems working with a modern tech stack, with opportunities for technical ownership from day one. You'll partner with Quant teams to help architect valuation, risk and pricing systems, delivering massively scalable, high performance streaming compute operations. You'll be equipped with all the latest kit to help you succeed as well as learning from industry experts on world finance. Location / WFH: You'll join the team in fantastic London (Soho) based offices that offer a wide range of facilities including nutritionally balance breakfast, lunch and all day snacks. Please note this role is full-time office based (Monday to Friday). About you: • You have an outstanding record of academic achievement - minimum 2.1 in a STEM discipline from a top tier university (i.e. Russel Group or top 100 global university), backed by A grades at A-level, • You have advanced C# .Net programming skills including .Net Core (will also consider Java, Python or C++ background if happy to use C# going forward), • You have a strong knowledge of SQL databases, • You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms, • You're entrepreneurial with good business acumen, keen to take ownership and lead projects, • You're collaborative, enjoy problem solving and sharing ideas What's in it for you: As a C# Developer / Software Engineer you will earn a competitive package: • Salary to £180k, • Significant bonus earning potential, • Fund performance share, • Personal training budget and mentoring, • Family friendly benefits that include unlimited emergency backup childcare as well as care for elderly relatives, • Various social groups including sports teams, • Private healthcare and wellness activities Apply now to find out more about this C# Developer / Software Engineer (C# .Net SQL) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

We are seeking an exceptional C++ Engineer to join one of the world's most advanced high-frequency trading firms. This is a rare opportunity to work at the intersection of cutting-edge technology and global financial markets, where performance is measured in nanoseconds and innovation drives competitive advantage. You'll be part of a team that designs and builds ultra-low latency trading systems deployed across global exchanges. Your work will directly impact trading performance, and you'll be empowered to push the boundaries of what's possible in software and hardware optimisation. Key Responsibilities • Architect and implement high-performance C++ systems with extreme latency sensitivity., • Optimise every layer of the stack - from CPU cache and memory allocation to kernel bypass and network I/O., • Collaborate with traders, quants, and infrastructure engineers to deliver robust, scalable, and lightning-fast trading solutions., • Profile, benchmark, and tune systems using advanced tooling and custom diagnostics., • Contribute to the design of proprietary protocols, lock-free data structures, and real-time analytics pipelines. Ideal Candidate • Expert-level proficiency in modern C++, with a deep understanding of low-level systems programming., • Strong grasp of computer architecture, concurrency, and performance engineering., • Experience with kernel bypass technologies (e.g., DPDK, Solarflare/OpenOnload) and high-performance networking., • Familiarity with Linux internals, NUMA, CPU affinity, and custom memory management., • Proven track record of building latency-critical systems in trading, gaming, or telecom environments., • Bonus: Experience with FPGA acceleration, RDMA, or custom NIC firmware. Why Apply? • Work with some of the fastest systems and smartest minds in the industry., • Direct impact on trading performance and strategy execution., • Access to bespoke infrastructure, bleeding-edge hardware, and proprietary tooling., • Culture of excellence: flat structure, minimal bureaucracy, and relentless focus on performance., • Compensation at the top end of the market, with significant upside tied to impact. Apply Now!

C++ Developer / Engineer (C++ Mac Extensions) WFH / London to £80k Do you have C++ coding skills combined with experience of developing Mac Extensions? You could be progressing your career at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; the platform monitors network protocols in real-time, parses the commands and data structures to extract key metadata which is then analysed by in-house algorithms and allows customers to detect hackers, malware, data leakage and other malicious activity. As a C++ Developer you will focus on enabling the core product, written in C / C++ for Windows and Linux to run on Apple Mac software, using the latest Extensions, tools and API integrations. Location / WFH: You can work from home most of the time, meeting up with colleagues in the London office once or twice a month. About you: • You have strong C++ development skills, • You have experience of integrating software with Apple Mac Extensions and APIs, • You have a good knowledge of Network Security, • You have VPN client or security experience, • You're collaborative with great communication skills, • You have experience of producing technical documentation, • You're degree educated in Computer Science or similar technical discipline What's in it for you: As a C++ Developer (Mac Extensions EDR C++) you will earn a competitive package: • Salary to £80k, • Remote working (x1-2 days a month in London), • Continuous training and career development including paid for certifications Apply now to find out more about this C++ Developer / Software Engineer (C++ Mac Extensions) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

At Champion Data, our dedicated team are united by sport and driven by data. We strive to revolutionise and transform sport data globally by leveraging our cutting-edge technology and expert team, ensuring we deliver the best possible outcomes for our partners and clients. About the job Champion Data has an exciting opportunity for a capable and motivated Developer (Mid-Level) to join our engineering team. This role is ideal for someone who has moved beyond graduate or junior level and is looking to deepen their technical capability while contributing meaningfully to production systems used in elite sport. As a mid-level developer, you will design, build, test, and maintain software solutions under the guidance of senior engineers and technical leads. You’ll take ownership of well-defined components, contribute to team discussions and technical decisions, and steadily grow towards greater autonomy and responsibility. This is a full-time permanent role based in the United Kingdom. We operate a hybrid model, with developers typically spending 1–2 days per week in our central London office or client locations to support collaboration and team connection. The role reports into the Technology Leadership team (via the CTO) and works closely with senior developers, product managers, and delivery leads. The role may include participation in a rostered on-call support rotation for scheduled sporting events, with appropriate support and escalation. Key Responsibilities • Software Development: Design, develop, test, and maintain software applications using agreed technologies and patterns, following established best practices and coding standards., • Task Delivery: Deliver assigned tasks and user stories within agreed timeframes and quality expectations, raising risks or blockers early., • Collaboration: Work closely with other developers, testers, product managers, and delivery leads to build effective and reliable solutions., • Code Quality: Write clean, maintainable, and well-tested code, contributing to peer code reviews and continuous improvement of team standards., • Learning and Growth: Actively develop your technical skills and domain knowledge, learning from senior engineers and applying feedback to improve your work., • Reuse and Consistency: Leverage shared libraries, frameworks, and existing patterns where appropriate to ensure consistency and efficiency across systems., • Problem Solving: Investigate and resolve technical issues within your area of responsibility, escalating more complex problems when needed., • Operational Support: Assist with supporting and maintaining production systems, including diagnosing issues and contributing to fixes under guidance., • Documentation: Contribute to technical documentation to support maintainability, onboarding, and knowledge sharing. About You • Solid commercial experience with .NET / .NET Core and C#, • Practical experience building and maintaining applications in AWS environments, • Experience working on production systems with real users and operational constraints, • Familiarity with CI/CD pipelines and Git-based workflows, • Experience working within Agile delivery teams, • A willingness to learn and grow into greater technical responsibility, • Clear written and verbal communication skills, • Strong problem-solving ability and attention to detail, • Experience with data-intensive or distributed systems is advantageous but not required. Tell me more about Champion Data For over 20 years, Champion data has been at the forefront of delivering sports stats globally.With a global presence in Australia, the USA, the UK, and Asia, we specialise in real-time data collection, storage, analysis, distribution, and visualisation. We track every play and movement, delivering unbeatable game intel through seamless integration systems. Our unrivalled visual packages, in partnership with leading media outlets, ensure a sensational sports broadcast experience. We work across numerous major sports, including AFL, NRL, Football, Horse Racing, World Netball, LIV Golf, Tennis, and Lacrosse. As we continue to expand globally, we aim to solidify our position as the leading sports data company. At Champion Data, our people are at the core of our success, driving the innovation and passion that underpin our company culture. By joining our team, you will be part of a motivated group with a ‘can-do’ attitude, eager to embrace challenges and committed to personal and professional growth. At Champion Data we will enable you to be your own champion. Our Core Values: To challenge the Playbook / To be an Elite Partner / To Champion Team Why Join Champion Data? We offer flexible hybrid working arrangements, financial support for setting up a remote workspace and a strong focus on health and wellbeing. Our team culture is vibrant and supportive, including regular social events, team lunches, and more. We also provide extensive employee benefits, including access to our wellness program and additional leave through Mindful Me Days. What benefits does Champion Data offer the team in the UK? • Mindful Me Days: Four days per year dedicated to your wellbeing, • Flexible Working: Our team works globally in a hybrid environment, which includes two weeks per year, during which you can work remotely from anywhere worldwide., • UK Office: Access to a co-working space in Soho, London., • Our spaces: all of our offices have great end-of-journey facilities; including showers, wellness/prayer room & games, • Employee Assistance Programs: 24/7 Access to financial support and counselling, • Wellness Incentive: To help support your home office setup or contribute towards a wellness activity/service of your choosing, • Get to the Game: Funds towards tickets for you and your family/friends to attend sporting events globally., • Advance You Learning and Development: Annual budget to spend on learning and development activities plus Brain Block Time, this is time set aside monthly to learn or study., • Social Events: Including an annual Family Day & Volunteer Day, • Paid Parental Leave When you join Champion Data, you will have the opportunity to step into a fast-growing, dynamic business during an exciting period of expansion. Each day brings new challenges and opportunities to collaborate with diverse clients across the sports, technology, and broadcast media industries. We look forward to hearing from you and welcoming you to Champion Data. #thestorybehindthegame

Guide salary circa 130-170k + bens/bonus – Commodities trading background is essential**.

C++ Developer - Software Data - Financial Services This is a heavily technology-focused firm with a number of highly skilled engineers working across all different aspects of the platform, however this role is brand new and so the ability to work independently is required, along with the confidence to engage with other teams and team members to investigate problems and find solutions collaboratively. • Strong skills in design and C++ application development absolutely required. (At least 3 years), • Strong appreciation for testing and ideally experience working in a TDD way is preferred., • Experience in STL, Boost, multithreading, concurrent systems This firm care a lot about performance, low latency, high throughput and the challenges it presents – so should you. This is a truly welcoming and inclusive business who love to take talented engineers and make them better. You will be welcomed into a collaborative and friendly working environment. A great opportunity to make your mark in financial technology, learning from the best. Contact Ciara Clarke at Harrington Starr for a confidential discussion on this role.

NET Developer (Contract) Location: Central London Rate: £350–£425 per day Duration: 6 months (likely extension) Start: ASAP Role Overview We are seeking an experienced .NET Developer to join our Business Intelligence IT team. You will develop and support SMBC BI business applications using C# and MS .NET Framework, working across SQL Server and Oracle databases. This role involves both new development and maintenance of existing applications, ensuring stability and compliance with change management procedures. Key Responsibilities • Develop and maintain C#/.NET applications for BI systems., • Analyse business requirements and design technical solutions., • Write and optimise T-SQL and PL/SQL scripts for data analysis., • Collaborate with DBAs and infrastructure teams in London and New York., • Support production environments, troubleshoot issues, and implement fixes., • Assist with Citrix and application server deployments for web and Windows apps., • Follow change management and release processes., • Strong experience with C# and .NET Framework (Windows and Web apps)., • Proficient in SQL Server (T-SQL) and Oracle (PL/SQL)., • Knowledge of application deployment and environment maintenance., • Experience in unit testing, QA, and documentation., • Financial services or enterprise BI experience., • Familiarity with Citrix, disaster recovery environments, and version upgrades. Apply by clicking the link provided or contract for a faster response.

Experis Software Engineer Perm Salary DOE London (Hybrid) DV or SC Clearance Essential Our client, a rapidly growing deep-tech consultancy, urgently require an experienced Software Engineer to join their team on a permanent basis. In order to be successful, you will have the following experience: • Experienced Software Developer/Engineer, • Strong background within Python, C++, C#, SQL, TypeScript, • Experience of Palantir technology is a bonus, • DV or SC Clearance is essential Within this role, you will be responsible for: • Delivering strategic advisory, engineering delivery, and enablement services to Government and commercial clients., • Solve user problems by drawing source and captured data into a single foundational data model and building operational workflows that materially change the decisions made, • Work closely with clients, to tailor products and services, • Design solutions for client problem sets based on their descriptions and by exploration of the data landscape, • Assist in the design, development, and maintenance of data pipelines and ETL processes to build data and action models to address the workflow needs, • Build and edit operational workflows, including front ends and decision-support toolsets, inclusive of native Palantir tooling and integrated front ends, • Collaborate with team members to implement AI and machine learning models against user problems, • Close working with clients, building deep and sustainable relationships that positions you/us as their “trusted advisor” For further information please contact

Quantitative Developer - London/Remote 40+ leading quant firms seeking top-tier developers. Multiple immediate openings. What you'll do: • Build low-latency trading systems and infrastructure, • Develop quantitative libraries and research platforms, • Optimize execution algorithms and risk systems Requirements: • 2+ years quant dev or HFT experience, • Expert C++/Python skills, • Financial markets and trading systems knowledge Our network: Pay: $180K-$2M+ based on experience Locations: London, Remote Focus: Ultra-low latency, systematic platforms, research infrastructure From prop trading tech to systematic fund platforms. Ready to build the future of trading? Apply now for confidential discussions.

DeFi Developer — High-Performance Crypto Trading Systems (London) Our client is hiring a sharp, ambitious DeFi Developer to join their DeFi trading team building high-performance systems that operate directly on decentralized markets. You’ll work hands-on across the full trading stack — from on-chain integrations and execution logic, to infrastructure, monitoring, and performance optimization. What you’ll do • Build and ship production-grade code (primarily Rust + Python), • Develop systems that interact with on-chain protocols and infrastructure, • (Solidity, JSON-RPC, Solana, MEV workflows, etc.), • Improve real-time monitoring, execution pipelines, and strategy tooling, • Debug and optimize end-to-end performance: latency, reliability, throughput, • Work with protocol teams and external projects to unlock new market opportunities, • Grow into end-to-end ownership across DeFi integrations and trading infrastructure Why this role is unique • Full systems exposure — infrastructure, execution, strategy logic, on-chain interaction, • DeFi at the core — learn how protocols work under the hood and how on-chain dynamics create edge, • Elite teammates — small, world-class group of engineers, quants, and traders, • Startup velocity — fast decisions, frequent shipping, immediate production impact This is an ideal role for someone who sees themselves as a top technologist and wants to work in one of the most cutting-edge environments in finance and crypto. What we’re looking for We’re looking for driven developers who want to learn fast by working on hard, meaningful problems. You should have: • 3–7 years of professional software engineering experience, • Strong fundamentals and ability to write clean, testable, efficient code, • Solid CS foundation: algorithms, data structures, concurrency, networking, etc., • Strong ownership mindset and clear communication Signals of technical excellence (any of these helps): • Top academic performance in CS / math / physics / engineering, • Competitive programming / olympiad success (ICPC, IMO, IOI, IPhO, etc.), • Experience at a highly selective tech company, trading firm, or fund Language & technical background • Rust preferred, but you should be strong in at least one systems/statically typed language:, • C++ / Java / Go / C# / Kotlin / similar Nice to have Strong preference • Understanding of trading systems, market structure, or strategy implementation Bonus • DeFi familiarity: smart contracts, blockchain APIs, MEV, Solana, • Rust experience, • Infrastructure/observability tools (AWS, Grafana, etc.), • Strong math/stats background (modeling, simulation) Team culture Our client values: • High ownership and initiative, • Curiosity, intellectual honesty, and rapid learning, • Clear, direct communication, • No ego, no politics — just building and improving together

At Champion Data, our dedicated team are united by sport and driven by data. We strive to revolutionise and transform sport data globally by leveraging our cutting-edge technology and expert team, ensuring we deliver the best possible outcomes for our partners and clients. About the job Champion Data has an exciting opportunity for an experienced and dedicated Senior Developer to join our team! The Senior Developer is a key technical leader, leveraging their extensive experience to guide and mentor other members. They are responsible for designing, developing, and maintaining software solutions for both internal and external clients. Possessing strong technical skills and expertise in software development, they play a crucial role in ensuring our success, delivering robust and scalable software solutions. This is a full-time permanent role based in the United Kingdom. We operate a hybrid model, with senior engineers typically spending 2–3 days per week in our central London office or client locations to support collaboration, mentoring, and team development. The role reports into the Technology Leadership team (via the CTO) and works closely with senior engineers, product, and delivery leads. The role may include the provision of on-call support services for scheduled sporting matches at regular times on a rostered basis. Key Responsibilities • Software Development: Develop software applications using appropriate technologies, adhering to best practices and industry standards, to meet business objectives., • Task Management: Complete assigned tasks within agreed time frames, budgets, and quality standards, effectively managing priorities and deadlines., • Collaboration: Confer and collaborate and lead team members and other developers to address system software problems, propose improvements, and make necessary modifications., • Continuous Learning: Stay up to date with industry trends and developments, proactively identifying and proposing changes that can enhance software quality, speed, and maintainability., • Code Reusability: Promote the reuse of existing shared code and common libraries to improve development efficiency and maintain consistency across projects., • Quality-Driven Development: Emphasize a focus on software quality throughout the development process, employing robust testing and best practices to ensure reliable and maintainable code., • Policy and Idea Development: Direct the application of existing principles and guide the development of new policies and ideas, contributing to the advancement of the team and organization., • Complex Problem Solving: Tackle complex issues where analysis requires in-depth evaluation of variable factors, employing analytical and problem-solving skills to find effective solutions., • Stakeholder Networking: Establish and maintain productive relationships with key stakeholders, facilitating effective communication and collaboration., • Mentoring and Advisory Role: Provide guidance and advice to other team members on complex matters, leveraging your expertise to elevate the team's performance., • Leadership and Support: Offer leadership and support to developers within the team, contributing to their growth and development., • Operational Technical Support: Provide operational technical support for products and solutions, ensuring their smooth functioning and addressing any issues that may arise., • After-Hours Support: Be available for after-hours support for applications falling within your area of responsibility, contributing to the overall reliability and stability of the software ecosystem., • Specialisation: Sustaining a firm dedication to achieving expert-level proficiency in their specialized field, while also disseminating knowledge and educating others, to drive innovation and success within the company. About You • Extensive industry experience in .Net Framework, .Net Core and C#, • Strong, hands-on experience designing and operating production systems on AWS, • Experience building and operating high-availability, data-intensive systems is highly regarded, • Experience contributing to system design and architectural decisions in distributed systems, • Experience building, maintaining, and improving CI/CD pipelines using Git-based workflows, • Experience working in an Agile team, • Good verbal communication skills with the ability to communicate effectively with team members, internal and external, • Strong critical thinker with problem solving aptitude Tell me more about Champion Data For over 20 years, Champion data has been at the forefront of delivering sports stats globally.With a global presence in Australia, the USA, the UK, and Asia, we specialise in real-time data collection, storage, analysis, distribution, and visualisation. We track every play and movement, delivering unbeatable game intel through seamless integration systems. Our unrivalled visual packages, in partnership with leading media outlets, ensure a sensational sports broadcast experience. We work across numerous major sports, including AFL, NRL, Football, Horse Racing, World Netball, LIV Golf, Tennis, and Lacrosse. As we continue to expand globally, we aim to solidify our position as the leading sports data company. At Champion Data, our people are at the core of our success, driving the innovation and passion that underpin our company culture. By joining our team, you will be part of a motivated group with a ‘can-do’ attitude, eager to embrace challenges and committed to personal and professional growth. At Champion Data we will enable you to be your own champion. Our Core Values: To challenge the Playbook / To be an Elite Partner / To Champion Team Why Join Champion Data? We offer flexible hybrid working arrangements, financial support for setting up a remote workspace and a strong focus on health and wellbeing. Our team culture is vibrant and supportive, including regular social events, team lunches, and more. We also provide extensive employee benefits, including access to our wellness program and additional leave through Mindful Me Days. What benefits does Champion Data offer the team in the UK? • Mindful Me Days: Four days per year dedicated to your wellbeing, • Flexible Working: Our team works globally in a hybrid environment, which includes two weeks per year, during which you can work remotely from anywhere worldwide., • UK Office: Access to a co-working space in Soho, London., • Our spaces: all of our offices have great end-of-journey facilities; including showers, wellness/prayer room & games, • Employee Assistance Programs: 24/7 Access to financial support and counselling, • Wellness Incentive: To help support your home office setup or contribute towards a wellness activity/service of your choosing, • Get to the Game: Funds towards tickets for you and your family/friends to attend sporting events globally., • Advance You Learning and Development: Annual budget to spend on learning and development activities plus Brain Block Time, this is time set aside monthly to learn or study., • Social Events: Including an annual Family Day & Volunteer Day, • Paid Parental Leave When you join Champion Data, you will have the opportunity to step into a fast-growing, dynamic business during an exciting period of expansion. Each day brings new challenges and opportunities to collaborate with diverse clients across the sports, technology, and broadcast media industries. We look forward to hearing from you and welcoming you to Champion Data. #thestorybehindthegame

Company Description Goaco is a global consultancy established in 2010 and headquartered in the UK, specialising in delivering secure, innovative, and user-focused digital solutions. With expertise in digital transformation, cybersecurity, data & AI, software development, and cloud services, Goaco serves clients in both public and private sectors across the UK, UAE, and Saudi Arabia. The company is powered by over 100 in-house professionals and a vast network of 16,000+ associate consultants under the Goaco Group. As trusted UK Government digital experts, Goaco is dedicated to providing scalable and secure solutions that address real-world challenges, driving impactful and sustainable transformation. This role is ideal for an experienced .NET Software Developer who wants to progress into AI Engineering, with full training, mentoring, and certification support provided. ROLE OBJECTIVE The AI Engineer (Training & Certification Provided) will design, build, and integrate AI-enabled capabilities into enterprise-grade software solutions. While prior AI engineering experience is not required, you must have strong .NET development skills and a genuine interest in AI. Goaco will provide structured training and support towards Microsoft Azure AI certifications, including Azure AI Engineer Certified, enabling you to grow into the role while delivering real solutions. KEY RESPONSIBILITIES 1. Software Engineering (.NET Focus) • Design and develop high-quality services using C# and .NET (.NET 6+)., • Build secure, scalable APIs and backend components., • Apply clean code, testing, and modern engineering practices., • Contribute to cloud-native application architectures. 2. AI Engineering (Training Provided) • Learn and apply AI technologies using Microsoft Azure AI services and Azure OpenAI., • Integrate AI capabilities into .NET applications., • Build AI-assisted features such as:, • Intelligent search and knowledge retrieval, • Workflow automation, • Natural language interaction, • Implement prompt handling, embeddings, and AI service orchestration. 3. Data & Integration • Work with structured and semi-structured data sources., • Support data preparation and integration for AI workflows., • Collaborate with data specialists to understand data quality and constraints. 4. Responsible & Secure AI Delivery Deliver AI-enabled solutions aligned with: • Responsible AI principles, • Security and privacy requirements, • Governance and audit expectations, • Support monitoring, evaluation, and continuous improvement of AI features. 5. Collaboration & Professional Development • Work closely with engineers, architects, analysts, and delivery leads., • Participate in technical workshops, code reviews, and design sessions., • Complete supported training and achieve Microsoft AI certifications. KEY DELIVERABLES • Production-ready .NET services enhanced with AI capabilities, • Well-documented APIs and integration components, • Secure and compliant AI-enabled features, • Contributions to reusable engineering patterns and standards SKILLS & EXPERIENCE Essential • Strong commercial experience with C# and .NET (mandatory), • Experience building backend services and APIs, • Solid understanding of software engineering best practices, • Interest in AI and applied machine learning, • Willingness to undertake training and certification Highly Desirable • Microsoft Azure AI Engineer Certification (or willingness to achieve), • Experience using Microsoft Azure, • Familiarity with DevOps and CI/CD pipelines, • Exposure to data-driven or intelligent systems WORKING STYLE • Developer-led, analytical, and outcome-focused, • Curious and motivated to learn AI technologies, • Comfortable working in evolving problem spaces, • Clear communicator across technical and non-technical audiences

Job Title: Junior Python Developer Location: UK Experience: 2–5 years Education: Master's in Science (IT/Computer Science/Engineer) Employment Type: Full-Time UK based candidates only. Looking for candidates with Master's Degree Only What are we looking for? Here at Information Tech Consultants Ltd (ITC) we are providing a unique opportunity for entry level Data Scientists to utilize our skills and expertise to become successful experienced Data Scientist, working with several highly recognized UK and International companies including multiple Fortune 500 and FTSE 100 Clients. You will provide professional consulting services working onsite for start-ups, medium and large sized companies. You will be working on large complex projects so you should be comfortable dealing with demanding stakeholders and providing time driven results. Innovation, Collaboration and Passion are the three core values that we look for in all our personnel. Who are we looking for: Applicants must be experienced working with the following: Essential Skills : · Machine Learning · SQL Server · Knowledge of Data analysis/Mining/Warehousing · Statistical Analysis · Linear Regression · Database Desired Skills : Experience with any of the following: · Python · Hadoop · R · Java/C++ Qualifications and Attitude: • Master’s (Required) in Data Science, Mathematics, Statistics, Economics, IT related fields and 2- 5 years of experience in Information Technology., • You should be entitled to work in the UK with legal work authorization status., • Must be willing to travel within the UK as per project/client requirements., • Excellent communication skills and teamwork skills.

Join a world-class team shaping the future of quantitative research and trading. Our client is seeking an academically exceptional Quantitative Developer to be part of their London build-out. This is a unique opportunity to apply cutting-edge engineering and quantitative skills in a highly collaborative environment. You'll work on delivering market data to trading systems, building integrated research and execution frameworks for high-performance predictors, and designing advanced simulation platforms in a cloud-native setting. Expect to partner closely with leading researchers, translating innovative ideas into production-quality code that drives real-world impact. Responsibilities: • Design, develop, and maintain core components of the trading system, • Champion best practices in software engineering across the team, • Build robust testing frameworks for all trading components, • Develop automated, fault-tolerant monitoring and tracking systems, • Proven experience as a Research Engineer, Software Engineer, or Quantitative Developer, • Strong programming expertise in Python and/or C++, • Exceptional academic credentials from a top-tier university, with notable achievements such as Dean's List or equivalent honors

C# Developer / Backend Software Engineer C# .Net AWS (Junior - Mid) London to £80k Are you a bright, ambitious C# Developer who enjoys collaborating and working on complex systems with cutting edge technology? You could be progressing your career at a highly profitable, systematic Hedge Fund that invests in sports betting markets whilst enjoying a range of perks and benefits including hybrid working and a sociable team environment. As a C# Developer you'll join a cross functional Agile product team responsible for high-value business critical betting execution systems. You'll be building systems to manage large datasets which can process updates in real-time with high throughput and low latency; these systems are released with high frequency with technology choices that are continuously evolving. There's a focus on backend development with C# .Net and Kubernetes however you will work across the full stack, using TypeScript and React on the client side. You'll take ownership of projects and collaborate with a team of highly skilled engineers as well as business stakeholders, continually learning, assessing new technologies and making recommendations within a flat structure. Location / WFH: You'll be based in fantastic offices in a vibrant area of London with in-house gym and steam room, games room with pool tables and dart boards, library and free high quality catering (breakfast, lunch, dinner) from the onsite chef with flexibility to work from home once a week week (please note that during probation you will be required onsite five days a week). About you: • You're degree educated in a STEM discipline, Computer Science, Mathematics or Physics preferred, 2.1 or above from a top tier university (e.g. Russel Group, Oxbridge, World top 100), • You have C# serverside development skills, including .Net Core and multi-threading, • You have a good knowledge of AWS and Kubernetes, • You have a good understanding of CQRS and Event Driven systems, • The tech stack also includes JavaScript / TypeScript and React for client side applications; experience with any of these would be beneficial but you can pick them up on the job, • You're commercially aware and keen to understand the business impact of what you do, • You have excellent communication, collaboration and problem solving skills, • Ideally you will have an interest in sports with an understanding of betting What's in it for you: • Competitive salary, to £80k, • Pension, • Private medical care and wellness days, • Training and conference budget to support your personal development Apply now to find out more about this C# Developer / Backend Software Engineer (C# .Net AWS Junior - Mid) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

Captur helps software understand real world scenes in real-time with an SDK for flexible, on-demand visual recognition. We’re a small, rapidly scaling team backed by top-tier investors; we recently closed a $6M seed round to accelerate product and go-to-market growth. We are global leaders in edge ML and have validated +150M images on-device for enterprise customers such as Lime. Next, expanding as a horizontal platform across use cases that require real-time speed, high volume and coverage across a wide range of mobile devices. Role Snapshot We’re hiring a hands-on Head of Product — the solo product lead today, with a Product Designer reporting to you. You’ll own the roadmap, ship high-impact SDK features, design pilots, build repeatable product processes and recruit our first PM. You’ll work closely with Sales/CS/Engineering and be the product voice for customers. This is a rare chance to scale a product function from the ground up and directly influence ARR. This role reports directly to the CEO (based in New York) — expect fast decisions, visible impact and a close partnership with the founder. The ideal candidate will have a strong background in product management, excellent leadership skills and a proven track record of bringing successful AI products to market. Key Responsibilities Product Strategy & vision (30%) • Define and communicate the product vision and strategy working alongside the CEO, • Own the full product lifecycle: you’ll be our sole product lead day-to-day and accountable for product outcomes., • Ship reliably: write concise, testable specs and acceptance criteria, enforce ticket hygiene, unblock Engineering, publish release notes and run short post-release reviews (PRRs) to validate outcomes., • Hire, onboard and mentor the first Product Manager (target end of Q2); create the PM JD, interview plan and a 30/60/90 onboarding., • Design experiments that measure monetisable outcomes (conversion, pilot → paid, ARR influence). Own hypothesis, experiment design and go/no-go decisions., • Design convertible pilots with Sales/CS: define success criteria and deliver the evidence pack (dashboard, playbook & acceptance tests). Product owns the evidence pack; Sales/CS own negotiation and contracting., • Act as product sponsor on strategic pilots to remove technical blockers and shorten time-to-value. What Success Looks Like (First 6 Months) 30 Days: Stabilise and prioritise • Rapidly map the product surface, backlog, active pilots and outstanding technical debt; meet customers and Sales to surface urgent blockers., • Deliver a 30/60/90 plan to the CEO that includes one priority revenue experiment and a pragmatic triage of the top 5 product issues to fix immediately., • Ship 1–2 high-impact fixes or small features that demonstrate clear business value or shorten pilot time-to-value., • Put in place the minimum viable product rhythms (weekly planning, weekly sync, short PRR checklist) and enforce them for the team., • Own a pilot/feature with a validated outcome (go/no-go) and a recommended roadmap change., • Codify at least three lightweight process artifacts the team uses (e.g. scoping template, release checklist, decision log)., • Product rhythms are running consistently and the team adheres to the decision log., • Multiple validated experiments and an evidence-pack library for pilots., • Demonstrable product contribution to pilot → paid or clear ARR influence. Core Requirements • Typically 7+ years’ product management experience shipping enterprise AI/SaaS features, ideally at fast-moving startups (Series A–C); we prioritise scope and outcomes over exact years., • Proven solo product leadership — you’ve been the primary product lead on a product area and have hired or mentored PMs., • Hands-on SDK / developer-facing experience — shipped SDKs/APIs (iOS, Android, React Native), sample apps, docs and integration guides., • Experience shipping ML/AI features to production; you understand model outputs, evaluation and basic monitoring., • You write short, testable specs, enforce ticket hygiene and own acceptance criteria., • Commercial orientation — you’ve supported pilots with measurable commercial outcomes (conversion, ACV, trial → paid)., • Excellent communicator; comfortable reporting to a product-focused CEO and working asynchronously across time zones., • Based in the UK (London preferred) and able to work from our London office at least 1 day per week.

Sanderson are currently working with a client who are looking to develop their software engineering capability, developing novel solutions of a mission critical nature.As a Full Stack Software Developer, you will be responsible for.Writing clean, secure code following a test-driven approach.Create c

We are partnered with a leading fixed income hedge fund in London seeking a talented C# Developer to join their front-office technology team. You’ll work closely with the quant team as well as traders and other front office stakeholders to build and enhance core trading systems, research tooli