Senior Backend Developer
RIT Solutions
Senior Backend DeveloperWe're looking for a Senior Backend Developer to join an Agile team responsible for a mission-critical web platform. You'll work on stabilizing and enhancing existing systems while driving modernization using Java and AWS. This role suits a pragmatic, hands-on engineer who enjoys owning backend systems end-to-end and shaping technical direction in a regulated environment.What You'll DoDesign, build, and maintain backend services using Java and Spring BootDevelop and evolve microservices and REST APIsModernize legacy backend components while ensuring system stabilityDesign and optimize PostgreSQL schemas and queriesIntegrate services with AWS (Lambda, S3, API Gateway, SQS, EventBridge, etc.)Apply event-driven and cloud-native patterns to improve scalability and resilienceWrite unit and integration tests and participate in code reviewsSupport production systems, debugging issues and improving observabilityCollaborate closely with Product, Frontend, QA, and DevOps teams in an Agile environmentWhat We're Looking ForStrong experience with Java and Spring BootSolid understanding of backend architecture, microservices, and design patternsHands-on experience with AWS servicesStrong SQL skills and experience with PostgreSQLExperience working with legacy systems and incremental modernizationFamiliarity with CI/CD pipelines and containerized deploymentsFinancial Services or Wealth Management experience is a plusOwnership mindset and strong problem-solving skillsTechnology StackLanguages & Frameworks: Java 23, Spring Boot 3.xArchitecture: Microservices, REST APIs, event-driven systemsDatabase: PostgreSQLCloud: AWSDevOps: Git, Gradle, Docker, CI/CDObservability: New Relic, ElasticsearchProductivity: GitHub Copilot
- ...Senior Backend DeveloperWe are looking for a full-time senior Golang developer that can help us to improve and extend our data processing backend and make it easy for organizations to protect their sensitive data. You will work in a small, highly skilled team and own...SeniorFull timeWork at officeRemote workWork from homeFlexible hours
- Senior Backend Principal Developer Vice President Job Overview Citi is looking for a Principal Backend Engineer to take strategic ownership of the backend architecture powering a digital experience platform that serves hundreds of thousands of clients and processes millions...SeniorWork at officeRemote work
- Citi is seeking a Senior Java Developer for FX eCommerce in a hybrid role based in New York, NY. You will architect, build and maintain high-performance backend services for institutional clients, collaborating with product and development teams to deliver cutting-edge...Senior
- ...to customers, make technical decisions, and ship. Role: Senior Backend Software Engineer We're a tiny engineering team building... ...production Experience with LLM workflows, agents, evals, or developer tooling Experience modeling complex operational or...SeniorFull timeWork at office
$165 per hour
...have an idea and can covert that into a something beautiful, then you are the one we are looking for.As our Sr. Backend Engineer, you will be:You will develop efficient web services and APIsYou will participate in daily code deploys while working on individual or team...Senior$150k - $300k
$150,000-$300,000 per annum New York, United States Permanent Senior Backend Engineer - New York My client is a well funded early stage startup building a high scale social platform from the ground up. They are focused on building persistent, high performance...SeniorPermanent employment$182.75k - $278.5k
...help change mental healthcare for the better. The Work Backend at Headway involves high-stakes logic. You’re building a reliable... ..., whether that's code generation, operational automation, or developer tooling. You bring a builder's mindset: what can we automate, what...SeniorFull timeFlexible hoursShift work$250k
...media and we need your help adding fuel to the fire.About the RolePolymarket is launching perpetual futures and we're looking for Senior Backend Engineers to own the core systems that make it run. This is backend exchange engineering in the truest sense: low-latency order...Senior- ...As a Senior Backend Software Engineer on our Diagnostics team, you'll build the part of Regard that reads a patient's medical chart — labs... ...with the evidence supporting each one. You'll design and develop critical backend services and drive them end-to-end through the...SeniorFull timeWork at officeLocal areaHome officeVisa sponsorshipRelocation package2 days per week
$250k
...market infrastructure.About The RolePolymarket is looking for a backend engineer to build the systems that power how markets are... ...time.You’ll be a core individual contributor working with other senior engineers to design, implement, and operate the systems that define...Senior$250k
...ubiquitous beacon of truth in global media and we need your help adding fuel to the fire.About the RolePolymarket is looking for a Senior Backend Engineer to build and scale the payments infrastructure that powers deposits, withdrawals, and money movement across the...Senior$250k
...core of what Polymarket does. Every trade, every order, every market resolution runs through the systems this team owns. As a Senior Backend Engineer on the Services team, you'll be working directly on that infrastructure, building and scaling the backend that processes...Senior$250k
...market infrastructure.About the rolePolymarket is looking for a backend/product engineer to own the core domain APIs and data models... ...Polymarket’s consumer product at scale.Build real-time infrastructure: Develop gRPC/Connect services and real-time streaming systems (e.g.,...Senior- ...rePurpose Global is hiring a backend-focused engineer to design and maintain scalable server-side services and APIs. You will own our AWS-based infrastructure, drive modern DevOps practices, and contribute across the full development lifecycle. You should be proficient...SeniorRemote work
$160k - $180k
...Senior Backend EngineerFull-time New York, NY, US Exclusive confidential search — details shared with qualified applicants.You will help... ...impact on the team:Build the layer that connects AI agents and developer frameworks: proxies, SDKs, and agent toolingOwn the policy...Senior- ...OuterSignal, a startup building the customer intelligence layer for commerce, is seeking a senior backend engineer to own core systems and data pipelines. You’ll design scalable infra to process millions of orders, implement vector DB/RAG workflows, and ship end-to-end...Senior
- ...Senior Backend EngineerOur client is building AI technology to make healthcare accessible and free for everyone. They are seeking backend engineers to develop scalable infrastructure that supports billions of AI driven consultations while ensuring medical safety and HIPAA...Senior
$165k - $225k
...stable, and easier to use. 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. We're a small team where individual contributions have an outsized impact on both our technology...SeniorWork at officeRemote work- ...Senior Backend EngineerAs a Senior Backend Engineer, you will design, build, and deploy the backend services that power our creative brainstorming... ...in our San Francisco office.Required Experience:Experience developing scalable services using Python, using frameworks such as...SeniorFull timeWork at office
- ...rapidly growing revenue, and the opportunity to own foundational backend systems at a critical inflection point.Mission-critical problem... ...Virtual): Backend systems and architecture with the CTO and a senior engineer.Onsite Team Day (Half Day, NYC): Collaborate on real...Senior
$250k
...ubiquitous beacon of truth in global media and we need your help adding fuel to the fire.About the RolePolymarket is looking for a Senior Backend Engineer to join our DeFi Trading team and own core improvements to our exchange systems. You'll work across low-latency APIs,...SeniorImmediate start$200k - $300k
...Remote (U.S.) considered for exceptional senior candidates $200,000 - $300,000 per year... ...Design, build, and scale highly reliable backend systems and full-stack applications. Own... ..., and real-time infrastructure. Develop scalable APIs, distributed systems, and modern...SeniorFull timeH1bRemote work- ...medical institutions. Our agents have reached 3M+ patient encounters and are on track to 10x this year. About this role As a Senior Backend/Infra Engineer at Amigo, you'll build the core services behind our agent platform. The systems you own handle millions of...SeniorFull timeFlexible hours
- ...Senior Backend EngineerEllipsis Labs is a profitable, venture-backed New York-based startup building sustainable and efficient DeFi protocols... ...perpetual futures to Solana. Building on our experience developing efficient markets, Ellipsis Labs also operates SolFi, a proprietary...Senior
$120k - $260k
...more. Position Overview: As a key member of the software engineering team, you will spearhead the development of the core backend components for our blockchain network, focusing on networking, reliability, and scalability. Your primary responsibilities will entail...SeniorFull timeWork experience placement$40 per hour
...Senior Backend EngineerDoctronic | New York City ONSITE (Hybrid) | Reports to CEOThe MissionLet's make healthcare free and accessible to everyone through AI. We need backend infrastructure that can scale our AI doctor platform to billions of consultations while maintaining...Senior- ...Backend EngineerFull-time | NYC / Remote | BenefitsDaze is a social calendar with powerful creative tools for scheduling your future and documenting your past with friends.We hope to unlock creativity, foster intimacy, and inspire self reflection by reimagining the format...SeniorRemote work
- ...future of AI in healthcare! ----------------------------------------------------- About The Role We're looking for a Senior Backend Engineer to help define the future of AI-powered, human-led healthcare. You'll sit on our Platform & Integrations team, owning...SeniorFull timeRemote work
$180k - $226k
...Senior Backend EngineerUniswap Labs is a core contributor to the Uniswap Protocol, the world's largest DEX, with over $4 trillion in volume across 17 chains. It builds products that help millions access the protocol, including the Uniswap Web App, Wallet, and Trading...SeniorFull timeRemote workHome office- ...Senior Backend EngineerAstra is a high-impact engineering team building mission-critical financial infrastructure. Our fintech platform powers payment processing, fraud detection, and financial compliance for businesses handling 100M+ in weekly transaction volume. We...SeniorRemote workFlexible hours
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