Staff Backend Engineer at Uniswap | New York

At Uniswap Labs, we are a leading contributor to the Uniswap Protocol, the largest decentralized exchange (DEX) in the world, processing over $4 trillion in volume across 17 different chains. Our innovative products empower millions to access the protocol seamlessly, including the Uniswap Web App, Wallet, and Trading API. Furthermore, we serve as the primary…

At Uniswap Labs, we are at the forefront of revolutionizing decentralized finance (DeFi). As a key contributor to the Uniswap Protocol, which boasts over $4 trillion in trading volume across 17 blockchains, we create innovative products that empower millions to access the protocol. Our offerings include the Uniswap Web App, Wallet, and Trading API, and we also serve as the primary technical provider for Unichain, an Ethereum Layer 2 designed to enhance liquidity across multiple chains.Joining Uniswap means becoming part of a transformative team committed to redefining the flow of value on the internet.We are searching for a passionate and self-driven Senior Backend Engineer to join us in developing the next generation of financial products.Our headquarters is located in the vibrant SoHo district of New York City, and this role offers the flexibility of partially or fully remote work.

Join Uniswap Labs, a vital contributor to the Uniswap Protocol, the world's largest decentralized exchange (DEX), facilitating over $4 trillion in trading volume across 17 different blockchains. We develop innovative products that empower millions to engage with the protocol, including the Uniswap Web App, Wallet, and Trading API. Additionally, we serve as the primary technical provider for Unichain, a DeFi-centric Ethereum Layer 2 designed to unify liquidity across multiple chains.By joining our team, you will be part of a transformative journey that is redefining how value is exchanged on the internet.We are seeking a passionate and proactive Senior Frontend Engineer to help us create the next wave of financial products. In this pivotal role, you will own our current suite of web products while also having the opportunity to shape and influence the design and development of future offerings. You will ensure a seamless and high-quality user experience across various interfaces, from trading platforms to data-centric analytics pages and documentation portals.Our headquarters is located in SoHo, New York City, and this position offers the flexibility to work partially or fully remotely.

Join Uniswap Labs, a pioneering organization at the forefront of decentralized finance (DeFi), where we create user-friendly products that empower millions. From our innovative web app and wallet to essential crypto infrastructure such as the Uniswap Trading API and Unichain, our contributions to the Uniswap Protocol have facilitated over $2.9 trillion in transaction volume across Ethereum and more than 12 other chains.As part of our Apps Infra team, you will play a pivotal role in establishing the foundational infrastructure that supports all product teams at Uniswap. We manage the data layer, design systems, release and QA automation, UI libraries, and shared frontend services. Our approach is always user-centric, ensuring that the infrastructure we build enhances the overall user experience. Additionally, we actively support the development of AI-driven internal tools and automations that enable our engineering team to deliver faster and more efficiently.We are seeking a Senior Frontend Infrastructure Engineer who is passionate about technology and can seamlessly transition between high-stakes migrations, building AI-powered CLI tools, and refining UI components. You will have a strong viewpoint on tooling, prioritize developer experience, and uphold product quality as the core of your work.

Uniswap Labs stands at the forefront of the decentralized finance revolution as a key contributor to the Uniswap Protocol, the largest decentralized exchange globally, with a remarkable $4 trillion in trading volume across 17 different blockchains. We create innovative products that empower millions to access the protocol, including the Uniswap Web App, Wallet, and Trading API. Additionally, Uniswap Labs serves as the primary technical provider for Unichain, a DeFi-native Ethereum Layer 2 solution designed to optimize liquidity across chains.Joining Uniswap means becoming part of a team that is fundamentally transforming the flow of value on the internet.We are currently seeking a talented PhD candidate or recent graduate for a 6-month paid fellowship opportunity commencing in June 2026, based at our Soho headquarters in New York City. The fellowship offers invaluable training and hands-on experience within our research team, along with networking and mentorship opportunities to accelerate your career.

Uniswap Labs stands at the forefront of the decentralized finance revolution as a pivotal contributor to the Uniswap Protocol, the largest decentralized exchange (DEX) globally, facilitating over $4 trillion in trading volume across 17 different blockchain networks. Our innovative products, including the Uniswap Web App, Wallet, and Trading API, empower millions of users to seamlessly access our protocol. Additionally, we serve as the primary technical provider for Unichain, a DeFi-native Ethereum Layer 2 designed to unify liquidity across multiple chains.Joining Uniswap Labs means becoming part of a dynamic team that is transforming the flow of value across the internet.We are in search of a passionate and self-driven designer to help shape the future of financial products. As a Senior Product Designer, you will join a close-knit team recognized for crafting exceptional user experiences. Your role will involve tackling advanced human-computer interface challenges and developing innovative mental models for the next wave of decentralized finance users.This position is based in our SoHo office in New York City, with an expectation of regular in-person collaboration.

Uniswap Labs is a leading innovator in decentralized finance, contributing significantly to the Uniswap Protocol, renowned as the world’s largest decentralized exchange (DEX), with over $4 trillion in trading volume across 17 blockchain networks. Our mission is to develop pioneering products that empower millions to access the protocol effectively, including the Uniswap Web App, Wallet, and Trading API. Furthermore, we serve as the primary technical provider for Unichain, an Ethereum Layer 2 solution designed specifically for liquidity across multiple chains.Joining Uniswap means being part of a transformative team that is redefining the dynamics of value exchange on the internet.

At Uniswap Labs, a pivotal contributor to the Uniswap Protocol—the largest decentralized exchange globally with over $4 trillion in trading volume across 17 blockchain networks—we create innovative tools that empower millions to engage with the protocol. Our offerings include the Uniswap Web App, Wallet, and Trading API. Additionally, we are the primary technical provider for Unichain, a DeFi-focused Ethereum Layer 2 designed to facilitate cross-chain liquidity.Joining Uniswap means becoming part of a team dedicated to transforming the flow of value on the internet.The Platform Team is vital in ensuring our products are scalable, secure, and efficient. We are seeking a skilled Backend Engineer to contribute to building and maintaining the essential services that underpin our ecosystem.This position is based in SoHo, New York City, with options for partial or full remote work.

About madecardAt madecard, our mission is to empower homeowners by saving them time, money, and stress. Central to this mission is the Made Card, a credit card crafted specifically for homeowners that offers unmatched rewards on mortgage payments, home improvements, utilities, and essential purchases. Each transaction fuels a personalized home management platform, allowing users to oversee home systems and appliances, anticipate maintenance needs, and access support—from AI-driven insights to in-person services—precisely when they need it.We collaborate with leading national partners in the residential homeownership sector, including mortgage lenders and home service providers, which enables us to reach millions of households nationwide and deliver substantial benefits to homeowners.Supported by prestigious investors such as Village Global, Jump Capital, Recharge Capital, and Soma Capital, our leadership team boasts extensive expertise in fintech, mortgage, and credit card industries, having held roles at Ramp, Bain Capital, JP Morgan Chase, American Express, and Morgan Stanley. We are dedicated to building a financial and engagement platform for the next generation of homeowners—one that prioritizes the homeowner and redefines what it means to truly feel at home.

About GigaGiga has successfully secured $61 million in Series A funding and boasts a roster of paying clients, including industry giant DoorDash. We are on a mission to revolutionize customer experience through cutting-edge AI agents capable of understanding emotions, resolving issues instantaneously, and seamlessly scaling across the world's largest enterprises.This is a pivotal moment for Giga as we aspire to become the leading AI platform for enterprise automation, driven by our advanced voice superintelligence. To fulfill this vision, we are on the lookout for exceptional engineers to join our team.Our engineers enjoy significant autonomy and have the opportunity to make a substantial impact on millions of lives daily. This is a unique chance to work with brilliant founders, leverage our commercial success, and contribute to a company poised to become a generational leader. Here are a few highlights about us:Voice AI startup Giga raises $61M Series ADoorDash and Giga PartnershipGiga is trusted by the most prominent B2C companies worldwide, including DoorDash, to enhance their support and operations workflows through voice, chat, and email. If this mission resonates with you, we encourage you to apply!

About the Role Sigma Computing builds a high-performance platform designed for modern data architecture. As the team grows in New York City, the company is looking for engineers who enjoy solving complex problems and want to help make data accessible to everyone. The engineering group values collaboration and a focus on delivering solutions that matter across the technology stack. What You Will Do Take on challenging problems to create interactive experiences for data exploration and analysis within data warehouses. Work with technologies including Rust, Go, GraphQL, Node, and Kubernetes. Build backend distributed services, develop algorithms, and design APIs that power Sigma Computing's cloud applications. Investigate and resolve product or system issues by diagnosing root causes and debugging as needed. Design and implement new features to support a rapidly expanding user base. Participate in design and code reviews with peers and stakeholders to maintain high engineering standards and best practices.

Senior Staff Backend EngineerLocation: Manhattan, New YorkOnsite | Full-timeJoin our dynamic team at mlabs, the innovative engine behind one of the most visited platforms in the digital asset industry. With a staggering ~$1B in daily volume, our cutting-edge technology stack is designed to manage low-latency, high-throughput, and consistent load at an unprecedented scale.The RoleAs a Senior Staff Backend Engineer, you will be a pivotal technical leader, ensuring the robustness and continuous advancement of our core backend systems. Your role involves a combination of high-level architectural oversight and hands-on execution, focusing on mitigating scaling challenges and designing resilient, fault-tolerant systems that can handle substantial workloads.What You’ll Do:Own & Execute: Take charge of writing and deploying production code for core services, leading the design and implementation of high-scale distributed systems.Architect for Scale: Make informed decisions that harmonize swift iteration with long-term system scalability and maintainability.Drive Initiatives: Spearhead projects that involve multiple services, including storage, compute, APIs, and blockchain infrastructure.Set the Standard: Create benchmarks for observability, reliability, and performance, while enhancing engineering quality through design reviews and RFCs.Technical Leadership: Serve as a technical anchor during critical incidents and mentor peers, sharing your depth of knowledge and clarity of thought.Optimize Velocity: Enhance the internal developer experience by refining tools, CI/CD pipelines, and service abstractions.

Join Our Team as a Backend EngineerSalary: $170,000 – $225,000 with meaningful equityAbout NovigAt Novig, we’re revolutionizing the sports prediction market, aiming to become America's leading platform. Founded by visionaries Jacob Fortinsky and Kelechi Ukah, we proudly offer a commission-free sports trading experience. By dismantling the traditional sportsbook model, we deliver superior pricing, complete transparency, and a more efficient market for our users.Supported by over $100 million in funding from renowned Silicon Valley investors such as Pantera, Forerunner, Lux, NFX, Paul Graham, and Joe Montana, we are poised for rapid growth.Our MissionWe are committed to transforming a rigged system where the house always wins into a fair, two-sided market where sports fans can thrive. Our goal is to democratize and financialize sports betting, empowering users with control.Your Role and ResponsibilitiesLeverage cutting-edge technologies from modern financial exchanges to promote transparency and efficiency in sports betting.Engage with various components of our tech stack across infrastructure, data layers, networking, and application logic.Contribute to frontend product development to ensure an exceptional user experience.Develop a robust API experience for algorithmic trading integrations.Enhance real-time data ingestion and distribution pipelines.Expand product features by building modular service logic atop existing functionalities.Bring your passion for sports, markets, and technology to solve complex computer science challenges.

In today's competitive landscape, field sales is a critical driver of economic success; however, many teams face overwhelming challenges. Sales representatives spend excessive time on administrative tasks, managers are often overburdened, and leaders struggle to gain clear visibility into field operations.At siro, we're revolutionizing the way field sales teams learn, perform, and achieve success.Originally launched as an AI-driven coaching platform, siro has evolved into a sophisticated intelligent companion that not only automates the tedious administrative duties of sales reps but also provides managers with real-time insights and empowers executives to make informed decisions.Our platform seamlessly integrates with leading systems like Salesforce, analyzing thousands of in-person sales conversations to extract valuable insights, streamline workflows, and enhance overall performance across the organization. Imagine having an Iron Man-like Jarvis for sales—proactive, personalized, and embedded within the tools your teams already rely on.With $75 million raised and support from premier investors such as Index, Fika, CRV, and SignalFire, we are trusted by top-tier brands in the home improvement, retail, hospitality, and automotive sectors. Our lean team boasts talent from prestigious organizations like Meta, McKinsey, DoorDash, and Uber.Join us as we shape the future of human-AI collaboration in sales—we're just getting started.

Join rogo as a Staff Backend Engineer specialized in Financial Data, where you will play a crucial role in developing robust backend systems that handle critical financial data processes. You will work closely with cross-functional teams to create scalable solutions that meet the evolving needs of our clients.

About PolymarketPolymarket stands as the largest global prediction market platform, empowering individuals to share their insights on real-world events through trading on outcomes spanning politics, economics, sports, culture, and current affairs. Functioning as a decentralized peer-to-peer marketplace without a central 'house', Polymarket aggregates a wide array of opinions into clear, market-driven probabilities that reflect collective expectations about future events.Our rapid growth is evident as we approach $21 billion traded in 2025, alongside increasing adoption as a reliable alternative news source. Our vision is to emerge as a pervasive beacon of truth within global media, driven by a swift, dependable, and highly technical market infrastructure.About the RolePolymarket is in search of a talented backend engineer to join us in constructing and enhancing the essential exchange infrastructure that fuels our markets. This position emphasizes the development of high-performance, low-latency backend systems that must operate correctly, swiftly, and resiliently under the demands of real-world trading scenarios.You will play a vital role as a primary contributor, collaborating with other senior engineers to design, implement, and refine the systems that form the core of Polymarket's exchange. This position offers significant ownership with minimal bureaucratic hurdles and a strong focus on results.Your ResponsibilitiesWe are seeking an experienced backend engineer who thrives on close-to-the-metal work and tackling challenging distributed systems problems.Develop the Exchange Backend: Architect and build scalable, low-latency backend services that drive the Polymarket exchange, utilizing C/C++ or other performance-oriented programming languages (Go, Rust, Java).Enhance Performance & Scale: Analyze, tune, and troubleshoot systems with an emphasis on latency, throughput, memory usage, and correctness in production environments.Architect Distributed Systems: Create and maintain robust APIs, data pipelines, and event-driven architectures using messaging and streaming technologies (Kafka, Pulsar, RabbitMQ).Ensure Reliability & Operations: Strengthen security, availability, performance, and scalability within backend systems, while actively participating in diagnosing and resolving production challenges.Cross-Functional Collaboration: Work in close partnership with engineers across product, infrastructure, and data teams to ensure seamless integration between the exchange and the overall platform.Enhance Code Quality: Engage in code reviews, design discussions, and architectural debates to drive high standards in software development.

About the CompanyRain is revolutionizing global payments, making the next generation of transactions possible. Our dynamic and dedicated team of builders and experienced founders is committed to creating infrastructure that enables stablecoins for real-world applications. We facilitate card transactions, cross-border payments, B2B purchases, remittances, and more. By collaborating with fintechs, neobanks, and institutions, we strive to launch inclusive and efficient solutions worldwide. Join us at this hypergrowth company, backed by leading investors in fintech, crypto, and SaaS, and help us shape a borderless financial future.Our EthosAt Rain, we embrace an open and flat organizational structure that encourages personal growth and innovation. Team members at all levels are empowered to explore ideas and contribute to the company's roadmap and vision.Your RolePlay a key role in shaping the technical and product roadmap.Contribute to backend development and integrate various third-party services.Scale our infrastructure to support millions of users globally.Rapidly deploy new features and capabilities for our customers.Influence architectural decisions for our evolving product.Engage with smart contracts across multiple blockchain platforms.QualificationsProficient in NodeJS and other backend technologies.A strong builder mentality with a passion for side projects and experimentation.Ideal candidates will have 2-10+ years of relevant experience; compensation will be commensurate with experience.Preferred QualificationsExperience in fintech, especially with neobanks or card issuing.Familiarity with smart contracts and blockchain technology.Perks at Rain:Unlimited Time Off We encourage our team to take at least 10 days off to recharge.Flexible Working Hours We support a flexible work environment to suit your lifestyle.

As the challenges of severe weather events, rising costs, and the need for system advancements continue to grow, Treeswift is at the forefront of empowering energy companies to modernize their operational capabilities.Our innovative technology deploys sensors in customer field operations, often on backpacks or vehicles, capturing a wealth of LiDAR and imagery data. This data is analyzed using our AI models to provide actionable insights through our web platform. Our solutions have already helped utilities mitigate risks related to wildfires, regulatory compliance, and outages caused by vegetation, while also streamlining new construction processes and enhancing storm recovery efforts.Since initiating our first utility pilot in June 2024, Treeswift has rapidly progressed, collaborating with three of the five largest utilities in the United States and expanding our reach into new customer segments.We are assembling a team of mission-driven professionals with extensive expertise in robotics from prestigious institutions such as Penn, Caltech, and CMU, alongside experience in enterprise software from renowned companies like Palantir, Stripe, Oracle, and MongoDB. Our funding comes from leading investors, including Inspired Capital, founded by Penny Pritzker.Headquartered in lower Manhattan, Treeswift also has an office in Philadelphia and customer-facing team members located near client sites, such as in the Bay Area. We actively encourage our software engineers to engage with customers on-site—ask us about this opportunity!We invite you to join us on this impactful journey.

About FLORAAt FLORA, we empower the new creative class with innovative tools that enhance their craft. Our intelligent platform utilizes cutting-edge AI models to facilitate creativity. With a small but dynamic team of approximately 20, we have successfully raised $52 million from notable investors such as Redpoint Ventures, Hanabi Capital, Menlo Ventures, Justin Kan, and Gabe Whaley (founder of MSCHF). Our clientele includes esteemed names in the creative industries, such as Pentagram, Lionsgate, and Nike.About the RoleWe are seeking a Senior Backend Engineer to be a pivotal part of FLORA's platform development. You will engage with our database layer, generation infrastructure, observability tools, and the services that enable a seamless real-time creative experience on a large scale.As part of our skilled team of full-stack engineers, you will leverage your extensive backend expertise to resolve our most challenging systems issues. You will take charge of complex projects, work closely with engineering leadership on architectural choices, and evolve with our backend team as we expand.Your ResponsibilitiesDesign and implement generation orchestration infrastructure capable of supporting significant scale.Enhance observability across our infrastructure to minimize failure rates and proactively identify issues before they affect users.Optimize our database layer through effective schema design, indexing strategies, and migrations as we grow.Collaborate on architectural decisions to facilitate the introduction of new features.Partner with the CTO, Product Engineering, and Intelligence Engineering teams to ensure a stable and high-performing foundation for features across all client platforms.Desired Qualifications:A minimum of 5 years of experience in building robust backend systems and operating services at scale.At least 3 years of in-depth experience with TypeScript, emphasizing type safety, error handling, and code organization.Demonstrated ability to analyze ambiguous problems and deliver well-structured solutions.Experience with queue-based architectures, including job scheduling, orchestration, and fault tolerance.Strong instincts for observability; experience in system instrumentation, dashboard creation, and utilizing data to enhance reliability.Excellent communication skills and a collaborative approach to technical decision-making.

Join our dynamic team at Antimetal as a Backend Engineer to enhance and scale the systems that power our innovative investigation and automation engine.In this pivotal role, you will develop core backend and platform services, architect solutions for scalability, and ensure our infrastructure can accommodate swift product growth.About AntimetalAntimetal is revolutionizing the future of infrastructure management. We are building a platform that investigates, solves, and prevents issues—empowering engineers to focus on creating exceptional products.Key Responsibilities:Lead the scaling of Antimetal’s AI workflow engine, processing metrics, logs, traces, and code to conduct investigations and deliver intelligible outcomes.Design and implement distributed services to orchestrate data pipelines, automate investigations, and facilitate incident responses at scale.Model and optimize relational data in SQL for high-throughput investigations and comprehensive reporting.Enhance platform reliability through performance improvements, minimizing failure modes, and ensuring scalability with customer demand.Collaborate with cross-functional teams to translate complex requirements into production-ready backend and platform features.Establish engineering standards for coding, communication, and system design, shaping the development of our product.Your Qualifications:4-8 years of engineering experience, including 2+ years in a high-growth environment with significant scaling.Demonstrated experience in building and scaling distributed systems.Proven expertise in backend API/data services.Experience with on-call responsibilities in production systems.Comfortable navigating ambiguity and taking ownership of projects.Exceptional writing and communication abilities.Proficiency in TypeScript within production environments.Preferred Qualifications:Familiarity with observability tools and practices.