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Job Description Who We Are: Alpaca is a US-headquartered self-clearing broker-dealer and brokerage infrastructure for stocks, ETFs, options, crypto, fixed income, 24/5 trading, and more. Our recent Series D funding round brought our total investment to over $320 million, fueling our ambitious vision. Amongst our subsidiaries, Alpaca is a licensed financial services company, serving hundreds of financial institutions across 40 countries with our institutional-grade APIs. This includes broker-dealers, investment advisors, wealth managers, hedge funds, and crypto exchanges, totalling over 9 million brokerage accounts. Our global team is a diverse group of experienced engineers, traders, and brokerage professionals who are working to achieve our mission of opening financial services to everyone on the planet. We're deeply committed to open-source contributions and fostering a vibrant community, continuously enhancing our award-winning, developer-friendly API and the robust infrastructure behind it. Alpaca is proudly backed by top-tier global investors, including Portage Ventures, Spark Capital, Tribe Capital, Social Leverage, Horizons Ventures, Unbound, SBI Group, Derayah Financial, Elefund, and Y Combinator. Our Team Members: We're a dynamic team of 230+ globally distributed members who thrive working from our favorite places around the world, with teammates spanning the USA, Canada, Japan, Hungary, Nigeria, Brazil, the UK, and beyond! We're searching for passionate individuals eager to contribute to Alpaca's rapid growth. If you align with our core values—Stay Curious, Have Empathy, and Be Accountable—and are ready to make a significant impact, we encourage you to apply. Your Role: As a senior software engineer, you will help build and scale the systems and services that form Alpaca's foundation and empower millions of users who trade billions of dollars worth of assets. The clearing team is responsible for building a modern clearing and settlements platform. Alpaca participates in a market where over two trillion dollars worth of equities need to be cleared and settled daily. We are tackling the industry with a modern approach to building highly scalable, event-driven systems where resilient engineering, scale, and performance can have critical advantages. We have exciting plans for the team. Self-clearing is just the first step in building end-to-end financial infrastructure as we continue to prove ourselves as innovative market leaders and a core component of our growth across global markets and asset classes. We are looking for senior engineers keen on providing quality solutions, with great fundamentals, proven experience building and architecting at scale, and fearlessness in challenging conventions or voicing their opinions. In this role, you will have the autonomy to design and implement solutions to achieve defined goals while actively participating in determining those goals. An understanding of cloud-based modern architecture, infrastructure, and orchestration practices is also a great asset we are actively looking for. Things You Get To Do: • Contribute to a core system that millions of end users will rely on, • Work on self-clearing and help us join the elite club of self-clearing brokers, • Implement backend services and work on designing an architecture where reliability matters, • Take ownership of tasks, identify and address technical challenges proactively, and propose innovative solutions, • Contribute to architectural decisions, offering insights and suggestions for designing scalable and reliable systems, • Work with other teams to improve how our systems interact with theirs and improve Alpaca systems in general, • Maintain good software quality and test coverage, • Participate in code reviews, • Troubleshooting on incidents and reported bugs, • You may be asked to be on-call to assist with engineering projects that are timelyWho You Are (Must-Haves):, • Strong problem-solving skills paired with a proactive mindset, • Excellent communication and collaboration skills, • The ability to work independently and as part of a team, • A preference for simple and elegant solutions, • At least 3 years of experience working on systems at scale, • Proven experience in building and maintaining microservices, • Strong coding skills, preferably in Go, • Ability to write clean, well-tested, and maintainable code, • Experience with domain-driven design and event-driven design, • Ability to debug issues or, better yet, foresee problems and avoid them entirely, • Familiarity with containerization and orchestration technologies, especially Kubernetes, • Experience with cloud platforms, preferably Google Cloud Platform, • Experience with messaging queues and message brokers, • Experience with relational databases, preferably PostgreSQLWho You Might Be (Nice-to-Haves):, • Previous experience in the financial industry or knowledge of clearing and settlement processes, • Experience with DTCC integration, • Experience working remotely, • Experience working at a startup, • DevOps mindset is an assetHow We Take Care of You:, • Competitive Salary & Stock Options, • Health Benefits, • New Hire Home-Office Setup: One-time USD $500 Recruitment Privacy Policy

Job DescriptionHinge is the dating app designed to be deleted In today's digital world, finding genuine relationships is tougher than ever. At Hinge, we’re on a mission to inspire intimate connection to create a less lonely world. We’re obsessed with understanding our users’ behaviors to help them find love, and our success is defined by one simple metric– setting up great dates. With millions of users across the globe, we’ve become the most trusted way to find a relationship, for all. About the Role Joining Hinge’s AI Platform Core team offers a unique opportunity to help define and contribute to a growing ML platform with the goal of accelerating the development, deployment, and operations of AI enabled features on Hinge. If you are excited by the idea of working on challenges ranging from maturing and scaling our training and serving frameworks to enable millisecond real-time predictions and models that continually learn at scale, providing automatic model performance monitoring & debug frameworks, and building Platforms for architecting and evaluating generative AI & Agentic systems, then read on! With a mission to democratize AI for Hinge, ensuring it remains easily accessible, robust, scalable, cost-efficient, and trusted. You'll collaborate across our product and platform teams, as well as with external stakeholders like data science and backend engineering. You will meet our internal customers where they are and optimize towards their needs by delivering value incrementally and coupled to their problems. Being part of a small yet impactful team means having a broad scope of responsibility. As the role of ML at Hinge is only becoming more impactful, this role provides you with a chance to grow in impact and scope across the company. This is an exciting opportunity to own and help define the future of machine learning within a growing and maturing team!Responsibilities • Own or contribute to technical designs for the feature platform, training platform, serving platform, AI observability platform and GenAI Platform and underlying operational infrastructure to enable Product impact., • Develop, maintain, and enhance frameworks for AI/ML model development and deployment while establishing and driving best practices in MLOps / GenAI engineering., • Design, advocate, and implement for usability, reliability, scalability, operational excellence, and cost management while delivering incrementally., • Collaborate closely with ML Engineers, Data Scientists, Data Engineers and Product Managers to understand their needs and identify opportunities to accelerate the AI/ML development and deployment process., • Mentor and educate ML Engineers, Backend Engineers and Product Managers on current and up and coming tools and technologies for ML operations & GenAI product development through presentations and documentation., • Help design and architect an AI platform that adheres to the principles of responsible AI (Authenticity, Transparency, Equity) and builds privacy compliance into the platform., • Lead build vs buy discussions on technologies that underpin the Platforms we serve., • Participate in on-call and Incident Management processes. What We're Looking For, • 4+ years of experience, depending on education, as an ML, backend, data, or platform engineer developing and working with large scale, complex systems., • 2+ years of experience working on a cloud environment such as GCP, AWS, Azure, and with dev-ops tooling such as Kubernetes, • 1+ year of experience leading projects with at least 1 other team member through completion., • 1+ year of experience for Senior designing and developing online and production grade ML systems., • A degree in computer science, engineering, or a related field., • Strong programming skills: Proficiency in languages like Python, Go, or Java., • System design & architecture: Ability to design scalable and efficient ML systems., • Cloud platform proficiency: The ability to utilize cloud environments such as GCP, AWS, or Azure., • ML knowledge: A basic understanding of ML algorithms, techniques, and best practices., • Data engineering knowledge: Skills in handling and managing large datasets including, data cleaning, preprocessing, and storage, • Collaboration and communication skills: The ability to work effectively in a team and communicate complex ideas clearly with individuals from diverse technical and non-technical backgrounds.., • Strong written communication: The ability to communicate complex ideas and technical knowledge through documentation #Hinge

Job DescriptionOur Product Ryvn builds the deployment infrastructure that powers mission-critical software in industries where reliability matters most — from healthcare and finance to manufacturing and beyond. Our platform enables teams to deliver software continuously and securely across complex environments, replacing fragile manual workflows with intelligent, automated orchestration. We’re rethinking how modern enterprises ship code — ensuring that updates move safely from development to production with speed, precision, and confidence. Our Company Ryvn is a Y Combinator–backed, seed-stage startup based in New York City, where our fully in-person team is building the next generation of deployment infrastructure. We combine the pace of a startup with the discipline of production-grade engineering — solving hard technical problems that have immediate real-world impact. Our team draws experience from Palantir, Vercel, and Capital One, blending expertise in distributed systems, developer platforms, and enterprise software. We’re backed by top investors who share our belief that the most critical industries deserve infrastructure that’s fast, reliable, and built to last. About the Role As a Founding Software Engineer at Ryvn, you’ll design and build distributed systems that transform how organizations deploy and manage software at scale. You’ll work across the stack — from core platform services and APIs to performance optimization and developer experience — owning problems end-to-end and shipping code that runs in production environments across healthcare, finance, and manufacturing. You’ll work side-by-side with the founders to shape Ryvn’s technical architecture, product roadmap, and engineering culture. This is a rare opportunity to join early, build foundational systems from first principles, and help define the DNA of a company reimagining how software reaches the world. What You’ll Do * Build at scale: Design, build, and maintain highly available systems that orchestrate software deployment across hundreds of production environments * Shape the foundation: Work directly with the founding team to define Ryvn’s technical direction and architecture * Solve and streamline: Identify inefficiencies and design elegant solutions — with the autonomy to ship fast and keep our technology ahead of the curve * Own complex systems: Debug performance issues across distributed systems, from backend services to production infrastructure * Balance tradeoffs: Navigate engineering decisions thoughtfully — balancing short-term velocity with long-term scalability and impact What We’re Looking For * 3+ years of software development experience, ideally including time at a small, high-growth company * Full-stack fluency: Comfortable working across web frameworks, APIs, and databases in multiple programming languages * Strong technical judgment: Able to make pragmatic, well-reasoned tradeoffs to drive projects forward * Ownership mindset: You take initiative, see problems through, and care deeply about the systems you build Nice-to-haves * Experience with cloud platforms such as AWS, GCP, or Azure * Experience deploying and scaling Kubernetes, Helm, and Docker * Familiarity with CI/CD tooling, especially GitHub Actions * Experience building with Go, TypeScript, and React * Comfort working with Postgres and S3 * Experience using Grafana, Prometheus, Loki, or Mimir for observability * Familiarity with infrastructure-as-code tools like Terraform, Pulumi, or CloudFormation Life at Ryvn * Fully in-person team in NYC * Company-paid medical, dental, and vision insurance * Unlimited PTO and sick leave * Annual professional development stipend * Company-paid lunch, dinner, and coffee * Annual retreats and team offsites Compensation Range: $160K - $220K

Job Description Senior Software Engineer (Agentic AI / Healthcare) Location: New York, NY (Manhattan), Hybrid (3 days onsite) Compensation: $150,000–$250,000 base + equity Contact / Apply: Ryan Johnston - About Our Client Our client is a venture-backed healthcare technology company based in New York and Toronto, building agentic AI solutions that reimagine how medications are prescribed, verified, and supported across the pharmacy ecosystem. Backed by $4M in funding and trusted by multiple Fortune 50 healthcare organizations, they're scaling quickly and expanding their AI product line. As an early engineering hire, you'll play a meaningful role in shaping architecture, shipping production systems, and balancing speed with quality. The work directly impacts pharmacy workflows and, most importantly, patient outcomes. Mission Our client is building a world where medication delays are impossible. From the moment a prescription is written, the path to therapy start should be clear, fast, and predictable. Their platform connects the fragmented steps that slow medication access, intake, coordination, utilization management, and clinical services, so patients start therapy sooner. The Role Our client is hiring a Senior Software Engineer to design and build autonomous, agentic systems that run complex, multi-step pharmaceutical workflows end-to-end. This is a backend-leaning role with broad scope: you'll work across orchestration, integrations, reliability/observability, and the practical realities of healthcare systems. This role is ideal for someone who enjoys ambiguous problems, can ship end-to-end, and wants to build real product in a regulated, high-stakes domain. What You'll Do * Design and build autonomous agents that handle multi-step pharmacy workflows end-to-end * Architect communication systems that coordinate across organizational boundaries (providers, payers, pharmacies, vendors) * Build orchestration layers for long-running tasks, including graceful failure handling and human-in-the-loop escalation * Develop frameworks enabling agents to interact with external pharmacy systems, databases, and APIs * Implement evaluation + observability infrastructure to monitor agent behavior in production (quality, drift, failure modes) * Integrate with healthcare data standards and legacy pharmacy systems * Scale systems for real-time processing across multiple pharmacy networks What Our Client Is Looking For Must-Have Qualifications * 5+ years of software engineering experience with a strong backend focus * Proficiency in Python or TypeScript and deep backend fundamentals (APIs, data stores, concurrency, distributed systems) * Experience with service-oriented architectures and web frameworks (FastAPI, Flask, or equivalent) * Strong API design skills (clean, versioned APIs) * Familiarity with caching, messaging, and databases (e.g., Redis, Kafka, SQL/NoSQL, vector databases) and how to apply them for performance and reliability * Cloud experience (Azure, AWS, or GCP) * Experience building and deploying agentic AI systems, including tool use, planning, memory, and orchestration patterns * Proven ability to ship ambiguous projects end-to-end with minimal guidance and own outcomes * Based in NYC and able to commute to Manhattan 3 days/week Nice-to-Haves * Experience integrating with healthcare/pharmacy systems or healthcare data standards * Experience building evaluation harnesses for agent reliability and hallucination mitigation * Prior work in regulated environments where correctness and auditability matter Compensation & Perks * Competitive compensation: $150k–$250k base + stock options * Full medical, dental, vision coverage * Unlimited PTO + 2 weeks company-wide holiday closure * Complimentary breakfast daily and weekly team lunches (in-office) * Professional development stipend Why This Role This is a rare opportunity to be early, own architecture, and build agentic systems that directly improve medication access—where execution quality matters and the impact is tangible.

Job Description Software Engineer, Product Location: New York, NY (In-Office 5x/week) Comp Range: $170,000 – $270,000 + Competitive Equity Experience: 2–8 Years (Full-Stack / Product focus) The Opportunity: Build the Future of Real-World AI We are representing a Tier-1, venture-backed AI powerhouse that is doing what most "wrapper" startups can’t: solving complex, multi-billion dollar problems for the physical world. This isn't just another SaaS tool. This is high-fidelity Voice AI that handles 100% of inbound logistics, automated outbound engines, and deep CRM integrations that orchestrate real-world labor. Backed by $37M from elite investors like Kleiner Perkins and Alt Capital, the company has grown 10x year-over-year and is currently scaling from 70 to 200+ employees. Why This Role is Different • Insane Velocity: Move 3x faster than the competition. You will take features from a whiteboard sketch to production in weeks, not months., • Foundational Impact: You aren't a cog in a machine. You are joining a lean, elite team where your code directly impacts the revenue of thousands of home service businesses across the country., • Elite Pedigree: Work directly with founders from the MIT Voice AI Lab and a team of "hacker-first" engineers., • The "Builder" Dream: We value the startup/founder mindset. If you’ve built your own projects, scaled your own apps, or thrived in high-stakes environments, you’ll fit right in. What You’ll Do • End-to-End Ownership: Design, build, and ship product-critical features—from backend Voice AI logic to high-latency frontend user experiences., • Iterate with Purpose: Use direct customer feedback to refine real-time AI-driven workflows, scheduling engines, and data systems., • Solve High-Stakes Problems: Build systems that automate scheduling and dispatching for massive multi-channel operations., • Scale Everything: Contribute to an engineering culture that values testing, reliability, and "ruthless prioritization" of impact. Who You Are • The Product Generalist: You have 4–8 years of experience (minimum 2) with a strong full-stack background and a "product-first" mindset., • AI Familiarity: You have a strong grasp of LLMs, AI-assisted systems, or building agents., • The NYC Resident: You thrive in a high-energy, in-person collaborative environment (We are in-office 5 days a week in the heart of NYC)., • The High Achiever: You likely have a degree from a top-tier institution or a portfolio of standout projects/internships that prove you can build at scale. The Perks • Top-of-Market Pay: Up to $270k base + a significant equity stake., • NYC Lifestyle: Potential for a rent stipend after 6 months., • Fuel for Builders: Free dinner provided if you’re working late (past 8pm)., • Rapid Career Growth: Join at the inflection point of a company expanding 4x in the next 12 months.

Job Description NOVAVERSE is an international technology company focused on creating compelling digital products for architecture, design, and the unbuilt environment. We are pioneering the future of real-time 3D experiences by fusing cutting-edge generative Machine Learning with immersive rendering technologies. Our projects span architectural visualization, software, interactive simulations, and creative media. We have studios in New York, London, and Barcelona. We are looking for a Full Stack Developer who is a creative problem solver and systems thinker. You don’t just write code — you design intelligent systems that connect web platforms, real-time 3D engines, and cloud infrastructure to deliver seamless, high-fidelity interactive experiences. Your Role at Novaverse You will design, build, and maintain complex web-based platforms that integrate directly with Unreal Engine and Pixel Streaming, enabling real-time 3D interaction from browser to cloud to offline environments. Working closely with 3D artists, Unreal developers, designers, and product leaders, you will help bring advanced visual and interactive experiences to life. You will embrace AI-assisted development tools to accelerate experimentation, reduce boilerplate, and focus on solving higher-level technical and creative challenges. What You’ll Do Frontend & Visualization • Build polished, responsive web interfaces using React, TypeScript, WebGL, and Three.js., • Implement advanced visualisation features and interactive 3D content streaming., • Develop middleware connecting web clients, Unreal Engine instances, and Pixel Streaming servers using WebRTC and WebSocket protocols., • Design and maintain backend services on Google Cloud Platform (GCP), including Firebase, Cloud Functions, and Firestore., • Build secure, scalable APIs using Node.js and/or Python to support real-time data exchange and Unreal integrations., • Implement authentication, content management, and offline-capable deployment & workflows using Firebase Authentication, Cloud Storage, and Hosting., • Use Cloud Run, Pub/Sub, or App Engine to orchestrate event-driven communication between web platforms and 3D rendering environments., • Use AI-assisted tools such as GitHub Copilot and Cursor to speed up prototyping, refactoring, and documentation., • Integrate Gaussian Splatting and other next-generation rendering techniques for dynamic 3D visualisation in the browser., • Contribute to CI/CD pipelines, dockerized deployments, and automated testing workflows., • Improve reliability, scalability, and maintainability across distributed systems., • Work cross-functionally, from design and 3D to engineering, to prototype, test, and refine new interactive platforms and tools.What You’ll Bring, • 5+ years’ experience as a full stack developer in modern web environments, or equivalent practical experience., • Advanced proficiency in JavaScript/TypeScript, React, and modern frontend architecture., • Strong understanding of WebGL, Three.js, and real-time 3D rendering on the web., • Experience integrating web platforms with Unreal Engine and Pixel Streaming., • Hands-on experience with Google Cloud Platform, including Firebase, Cloud Functions, Firestore, and Cloud Run., • Backend development experience using Node.js and/or Python., • Experience designing APIs and managing authentication, real-time messaging, and media streaming systems., • Proven ability to build cloud-integrated systems that also support offline or local deployments., • Regular use of AI-assisted development tools (e.g. GitHub Copilot, Cursor)., • Strong design sensibility with the ability to build visually refined, user-centred interfaces., • Competitive salary, equity and benefits package., • Opportunities to work on cutting-edge, high-visibility projects in architectural visualization and interactive systems., • A collaborative, creative work environment with room for innovation and growth., • The chance to influence project direction and improve overall pipeline efficiency., • Regular team outings and studio socials, • Monthly wellness budget to support physical and mental wellbeing, • Ongoing training, development, and progression opportunities

Job Description Who We Are At Moxxi, we're redefining performance marketing with cutting-edge technology and a relentless focus on results. As a profitable, bootstrapped start-up, we are led by a team of industry veterans in performance marketing, ad tech, and digital publishing. Together, we're building the premier platform to incubate, scale, and optimize digitally born businesses, setting new standards for data-driven success. Our entrepreneurial team brings proven experience from both global corporations and fast-growing startups. We're passionate about delivering scalable, profitable outcomes for our partners through advanced profiling, targeting, and continuous optimization. Joining Moxxi means becoming part of a growing start-up in the heart of NYC, where you'll have the opportunity to accelerate your career, expand your skill set, and shape the future of performance marketing. The Role: As a Software Engineer at Moxxi, you'll play a critical role in building the platforms and tools that power our performance marketing engine. From designing intuitive interfaces in our CMS and CRM to scaling backend systems for real time ad delivery and A -driven optimizations, you'll operate across the stack to bring ideas to life. You'll be hands-on with data, APIs, UI components, and machine learning integrations, collaborating closely with cross-functional teams to solve meaningful business problems through code. If you're passionate about performance, experimentation, and building high impact products in a fast paced environment, this role is for you. Responsibilities • Architect, develop, and maintain scalable and resilient backend systems powering our CMS, AdServer, CMS, CRM, and optimization pipelines., • Build reusable UI components and responsive interfaces that allow marketers to manage, launch, and analyze campaigns with ease., • Build high performance APIs and services that integrate with internal platforms and external ad ecosystems., • Partner with the Account Managers and Operations team to productionize models that drive ad personalization, budget pacing, and bid optimization., • Design and evolve real time and batch data pipelines that support campaign analytics, attribution, and experimentation at scale., • Lead cross functional collaboration with product, design, and business teams to translate requirements into robust software solutions., • Ensure system observability, operational excellence, and uptime across critical infrastructure components., • Mentor junior engineers and contribute to a culture of clean, maintainable, and well-documented code., • Drive technical planning and contribute to the evolution of our platform strategy and long-term architectural vision., • Stay up to date with industry trends in advertising technology, distributed systems, and machine learning and bring relevant innovations into the team., • Take ownership of major initiatives and continuously identify opportunities to improve performance, scalability, and developer experience.Basic Qualifications, • Bachelor's degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience., • 3+ years of professional experience building and maintaining production-grade software systems, including significant experience in full-stack development., • Deep experience writing scalable backend services in Go, ideally within microservice-based architectures., • Proficiency in TypeScript, with experience in frontend frameworks such as React or Angular, and building APIs or server-side logic with TypeScript (e.g., Node.js)., • Experience designing and integrating RESTful APIs and working with distributed systems., • Familiarity with cloud-native development using Google Cloud Platform (GCP) services, particularly BigQuery and Cloud Run., • Understanding of software engineering fundamentals including system design, data structures, and algorithms., • Strong attention to detail, debugging, and performance optimization skills across the stack., • Excellent communication and collaboration skills; able to work effectively with cross-functional teams, including product, data, and design., • A self-starter mindset with a passion for shipping features, solving real-world business problems, and continuously improving engineering practices.Nice to Have / Bonus Qualifications, • Master's degree in Computer Science, Engineering, or a related technical field., • Experience in the AdTech industry, especially with ad serving, real-time bidding systems, or content management platforms (CMS), • Familiarity with Ads infrastructure standards, • Hands-on experience with data streaming technologies like Apache Kafka, Pub/Sub, or Kinesis., • Knowledge of infrastructure as code tools like Terraform and container orchestration systems like Docker and Kubernetes., • Exposure to non-relational databases (e.g., BigTable, DynamoDB) and caching systems such as Redis or Memcached., • Prior work on cost optimization, performance tuning, or infrastructure efficiency at scale., • Familiarity with AI/ML-powered ad optimizations, A/B testing frameworks, or campaign experimentation systems., • Self-Starter – You take initiative and solve problems before they become problems., • Curious & Analytical – You ask why, dig deep into data, and experiment to learn what works., • Efficiency-Oriented – Fast, focused, and action-driven., • Relationship-Focused – You build trust and deliver value., • Organized Multitasker – You thrive in fast-paced, high-velocity environments., • Strategic Communicator – You translate performance into insight and insight into action. Salary Range: $150,000 - $180,000 + equity Salary Range$175,000—$225,000 USD

Job Description🚀 Join the Future of Commerce with Whatnot! Whatnot is the largest livestream shopping platform in North America and Europe to buy, sell, and discover the things you love. Whether it's trading cards, fashion, electronics, or live plants, our sellers are building real businesses across hundreds of categories. We're building live commerce at a scale that's never been done in the West, and there's no playbook to copy. The people here are shaping how an entirely new industry develops. As a remote co-located team, we're inspired by our values and anchored in hubs across the US, UK, Ireland, Poland, Germany, and Australia. We move fast, stay close to our users, and focus on the work that drives the most impact. We're one of the fastest growing marketplaces and were recently named the #1 Best Startup Employer in America by Forbes. Check out the latest Whatnot updates on our news and engineering blogs and join us as we enable anyone to turn their passion into a business and bring people together through commerce. 💻 Role We are looking for intellectually curious, highly motivated individuals to be foundational members of our Discovery Feed & Personalization team. You will partner across the company to lead our Exploration efforts to help new sellers and small categories grow and thrive. We are looking for a backend engineer with a track record of shipping product features at scale. You should excel at making the right tradeoffs between building it fast and building it right. You should have experience leading and delivering on cross-functional projects, supporting multiple other engineers. What you'll do: * Ship product features to deliver high-quality Discovery experiences for users * Build and maintain a scalable, stable, low latency feed experience * Build the services and infrastructure to enable efficient exploration systems to help small sellers and new categories grow * Lead a workstream of multiple other software engineers as the individual responsible for success * Partner closely across the machine learning, platform, and product engineering teams to utilize models to solve discovery problems * Contribute scalable solutions across various serving stacks at the feed, search, machine learning service, and Discovery application layers. * Define and advance our technical approach to scalable recommendation systems. We offer flexibility to work from home or from one of our global office hubs, and we value in-person time for planning, problem-solving, and connection. Team members in this role must live within commuting distance of our New York City, San Francisco, Seattle or Los Angeles hub. 👋 You People who do well at Whatnot tend to be comfortable figuring things out as they go, biased toward action, and genuinely curious about what they're building. They care more about outcomes than credit and stay close to the product and the people using it. As our next Software Engineer you should have 5+ years of experience, plus: * Bachelor’s degree in Computer Science, Statistics, Mathematics, Software Engineering, a related technical field, or equivalent work experience. * Industry experience with a track record of applying practical methods to solve real-world problems on consumer scale data. * Ability to work autonomously and lead initiatives across multiple product areas and communicate findings with leadership and product teams. You can mentor others and prioritize building inclusive, supportive teams. * Experience in discovery-related fields (e.g. Recommendations, Content Understanding, Search, etc.). * Expert at designing and building scalable and maintainable backend systems. * Firm grasp of visualization tools for monitoring and logging e.g. DataDog, Grafana * Familiarity with cloud computing platforms and managed services such as AWS Sagemaker, Lambda, Kinesis, S3, EC2, EKS/ECS, Kafka, Flink/Spark. 🎁 Benefits * Flexible Time off Policy and Company-wide Holidays (including a spring and winter break) * Health Insurance options including Medical, Dental, Vision * Work From Home Support * Home office setup allowance * Monthly allowance for cell phone and internet * Care benefits * Monthly allowance on both food and wellness * Annual allowance towards Childcare * Lifetime benefit for family planning, such as adoption or fertility expenses * Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally * Monthly allowance to dogfood the app * Parental Leave * 16 weeks of paid parental leave + one month gradual return to work *company leave allowances run concurrently with country leave requirements which take precedence. 💛 EOE Whatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce. Compensation Range: $195K - $230K

Job Description Senior Staff Software Engineer — Real-Time Distributed Systems (C#, .NET, gRPC) 2Bridge Partners has been engaged in the search for a direct-hire Senior Staff Software Engineer with a strong background building real-time, message-based B2B or trading applications in C#, .NET, and gRPC. Our client is an established technology firm developing high-throughput, multi-tenant platforms used by institutional customers. The engineering environment is centered around real-time data distribution, low-latency messaging, high concurrency, and event-driven architectures. This role is ideal for engineers who want to influence platform design while remaining hands-on with complex distributed systems. Compensation: $200K–$300K base plus a significant discretionary performance-based bonus. What You’ll Do: • Architect, design, and deliver components of a highly scalable, distributed, real-time computing platform., • Build and refine low-latency, message-driven services using gRPC and modern .NET., • Develop reusable patterns, shared libraries, and framework-level abstractions., • Lead performance tuning across messaging, compute, network, and storage layers., • Own critical platform services supporting high-volume API and UI workloads., • Collaborate with engineering leadership to shape architectural direction. Required Experience: • 10–15+ years of professional experience with extensive work in C# and .NET., • Strong experience with gRPC and cloud-based service architectures., • Expertise with distributed messaging and event-streaming technologies including Kafka, RabbitMQ, and Redis., • Strong understanding of backend fundamentals including high-volume message processing, interprocess communication patterns, and database performance., • Experience building multi-tenant, event-driven B2B systems requiring millisecond-level updates., • Experience building frameworks or shared service layers., • Strong interest in clean architecture and high engineering standards. Non-Technical Requirements: • Strong analytical and architectural reasoning., • High ownership mindset with strong follow-through and initiative., • Ability to work independently and collaborate effectively., • Strong communication skills. Education: • Bachelor’s degree or higher in Computer Science, Engineering, or related technical discipline preferred. Nice to Have: • NYC metro candidates preferred for hybrid collaboration (flexible for exceptional candidates). Benefits: • Medical, Dental, and Vision coverage, • Retirement plan (401k or IRA), • Paid vacation, sick time, and holidays, • Life insurance options, • Short- and long-term disability coverage

Salary: $175,000 - $200,000 per year A bit about us: An IT company seeks Backend Developer! Why join us? Innovative, transparent leadership team Competitive comp plus equity and full benefits Strong growth runway in a high-growth sector Health, dental, and vision options Inclusive, supportive office

You'll architect, build, and maintain the distributed systems, APIs, and backend infrastructure that power world-class AI research and deployment. Design and implement scalable backend services, data pipelines, and APIs. Experience supporting or integrating agentic AI workflows into backend systems

We're looking for strong backend engineers who love building a developer tools used by the largest AI companies in the world. Comfort working across the stack: TypeScript on the frontend, Python services on the backend, and ClickHouse for data and analytics.

Senior Backend Engineer - Client Integrations (New York). You'll collaborate with a global team of full-stack, data, ML, and DevOps engineers to build scalable backend solutions as we continue to grow.

Join FreshDirect's tech and product teams in Istanbul, Türkiye.FreshDirect has been New York's most trusted online grocery brand for over 20 years.Our name is well known across the city, and our delivery trucks are seen in every neighborhood.As a sponsor of the New York Yankees, we are proudly conn

Senior Backend Application Architect - Kotlin / MDM / Android.

Strong backend engineering fundamentals:. Senior Software Engineer, Backend — Frontier Data The Frontier Data team builds the data and systems that power Scale’s most advanced Frontier AI use cases (agentic capabilities like coding agents, tool use, and GUI / computer-use automation). Our work s

A leading nearshore technology solutions provider is seeking a Senior Back-end Engineer (Python) to join their high-impact engineering team.The role involves developing new products, collaborating with QA for quality assurance, and mentoring junior engineers.Ideal candidates will have extensive expe

A financial technology company is seeking an experienced developer to join their team.In this role, you will work with cross-functional teams to develop scalable features that enhance user financial experiences.You should have at least 5 years of experience in Node/TypeScript, React, and GraphQL.The

New York, New York, United States; San Francisco, California, United States; Seattle, Washington, United States.Headway’s mission is a big one – to build a new mental health care system everyone can access.We’ve built technology that helps people find great therapists with the first software-e

A healthcare technology company in San Francisco is seeking a Senior Backend Software Engineer to take a leading role in building products. This role involves designing and developing critical backend services, mentoring team members, and collaborating with product and design teams.

A leading AI technology company is seeking a Senior Software Engineer, Backend, to own backend systems for agentic data products. Candidates should have over 5 years of experience in backend engineering with strong fundamentals in distributed systems and API design.

Drive backend development practices, patterns, and processes along with the other Regard backend experts. Mentor and review code from less experienced developers in our backend services across backend job processing, API, and other services. Own medium to large backend services and drive improvement

A Self-Performing General Contractor with over 75 years experience in Columbus, we are seeking an experienced Concrete Superintendent to join our team.This Jobot Job is hosted by: Collin Walsh.Are you a fit? Easy Apply now by clicking the "Apply" button and sending us your resume.Salary: $100,000 -

A technology company focused on AI in New York is seeking backend/platform software engineers to build scalable components that accelerate product development.

As a Senior Backend Engineer on this team, you’ll focus on developing backend services, automation frameworks, and internal developer tools that improve the velocity and reliability of our entire platform. Design, build, and maintain backend services and automation tooling primarily in. Champion m

San Francisco, CA, New York, NY, Portland, OR, or Remote within Canada or United States.Since the dawn of aviation, pilots have faced the constant challenge of air resistance, much like sailors navigating the friction of water.Amidst this relentless struggle, the.Just as the wheel revolutionized tra

A technology company is seeking a Senior Backend Engineer to design robust distributed systems in New York, with flexibility for remote work.

Responsibilities include designing scalable backend systems and collaborating with cross-functional teams.

Join a forward-thinking company at the forefront of web3 development! This role involves working with a dynamic team to build and scale backend services, innovate on blockchain protocols, and enhance developer SDKs.

Design, build, and maintain backend services in Java, focusing on performance, scalability, and reliability. Contribute to CI/CD pipelines, containerization, and infrastructure-as-code for backend services. Mentor other engineers in Java best practices and backend design patterns.

Required Qualifications:*** A related technical degree* 8+ years of industry experience as a backend software engineer, with a focus on large-scale, user-facing web applications* Proven experience architecting and implementing large or complex software as a service (SaaS) systems, with a strong unde

They are seeking a Backend Engineer to architect and implement features across their backend services, with a strong emphasis on scalable data processing and machine learning infrastructure. Architect and implement features that drive direct customer value end-to-end across our backend services and

They are seeking an Intermediate Backend Software Engineer to build scalable and reliable backend systems, primarily working with Scala and Java, while also exploring Kotlin as they expand their stack. Design, implement, and maintain backend services and APIs.

Senior Software Engineer (Full-Stack, Backend-Leaning) NYC (Hybrid) | Strong Base Salary + Competitive Equity Seed-stage |Real-world systems Our client is an early-stage, venture-backed startup rebuilding critical operational infrastructure in a large, overlooked industry. The Role Youll: Build and

Key Responsibilities Partner with the founder and external engineering contractors to deliver the MVP during the initial development phase Own the technical architecture, with a primary focus on backend systems Design and implement production-grade backend code Manage relationships with external eng

Senior Software Engineer (Full-Stack, Backend-Leaning) NYC (Hybrid) | Strong Base Salary + Competitive Equity Seed-stage |Real-world systems Our client is an early-stage, venture-backed startup rebuilding critical operational infrastructure in a large, overlooked industry. The Role Youll: Build and

Lead Backend Developer (NYC – Hybrid) Location: New York City (Flatiron District, Manhattan) Work model: Hybrid – 2 days on-site, 3 days remote Start: ASAP Type: Full-time, permanent (W2) Role Summary Our client is hiring a Lead Backend Developer to take technical ownership of backend services f

About Mercor’s talent network Join our Backend Engineer Expert Network to connect with leading AI labs and companies seeking your expertise. About Mercor projects Experts in our network contribute to: - Training and evaluating AI models in Backend Engineering - Creating tasks and deliverables

It's what drives us to innovate.To continuously advance science and ensure everyone has access to the healthcare they need today and for generations to come.Creating a world where we all have more time with the people we love.Advances in AI, data, and computational sciences are transforming drug dis