Top Backend Developer Jobs

Designs, develops, and integrates software solutions; builds and maintains CI/CD pipelines, regression testing environments, and developer productivity tools; customizes applications and assists with updates and rollouts; troubleshoots complex issues; mentors junior engineers; collaborates with QA; conducts user training; may work nights/weekends as needed.

Design, build, and operate backend services for Bestow’s insurance platform using Python, Go, Java, and PostgreSQL. Collaborate on technical decisions, integrations, carrier onboarding, and scalable platform capabilities. Mentor engineers through reviews and pairing, improve production reliability and observability, participate in on-call support, and communicate technical decisions in a remote-first environment. Use agentic AI coding tools daily and help establish effective AI-assisted development practices.

Lead the architecture and technical direction of AI-powered, 0-to-1 products. Integrate LLMs into reliable, customer-facing production systems; build proof-of-concepts; make high-impact architectural decisions; and translate ambiguous goals into executable roadmaps. The role is approximately 60% architecture, planning, and technical leadership and 40% hands-on backend development. It also involves resolving technical debt, unblocking engineers, and collaborating with Product, Design, and Engineering leadership.

Staff Backend Engineer responsible for architecting AI-powered products, integrating production LLM systems, validating designs through proof-of-concepts, and setting technical direction for high-innovation teams. The role combines architecture, planning, technical leadership, hands-on coding, roadmap development, technical debt reduction, and cross-functional collaboration with Product, Design, and Engineering leadership. Candidates will help establish scalable backend architecture and raise engineering quality across the organization.

Provides cross-team technical leadership for complex backend initiatives, modular architecture, monolith modernization, API and platform standards, production operations, and AI-assisted engineering adoption. Designs shared patterns for services, data, eventing, security, testing, observability, deployment, and reliability. Partners with Product and Engineering leadership, mentors engineers, participates in incident response, and drives technical strategy without formal authority.

Build, test, ship, and operate production backend features with minimal guidance. Design APIs, background jobs, integrations, data models, migrations, and bounded services while maintaining security, performance, observability, and reliability. Review code, improve automated testing, investigate production issues, address technical debt, participate in operational support, and collaborate asynchronously with product, frontend, infrastructure, and security teams. Use AI coding tools responsibly by validating and correcting generated output.

Lead software engineering projects and developers building distributed microservices, full-stack systems, cloud-based solutions, and generative AI conversational experiences. Collaborate with product managers, address regulatory needs, evaluate and write code, mentor engineers, and apply technologies including Python, Go, Node.js, AWS, Docker, Kubernetes, SQL, and NoSQL databases.

Lead design and implementation of backend systems for Model-Based Engineering web applications. Build APIs, data-processing and analytics pipelines, optimize SQL, develop production-ready infrastructure, create test suites, mentor engineers, participate in architecture and tech selection, and ensure scalability, resilience, and performance for large-scale distributed systems.

Owns delivery of backend money movement and card ledger systems, leading engineers through complex problems and ambiguity. Collaborates with product, design, analytics, and engineering stakeholders; defines scalable technical solutions; supports system availability, monitoring, on-call operations, code quality, and engineering standards. The role also includes mentoring and developing team talent while building highly available distributed systems for Affirm’s financial products.

Leads backend software engineering for secure, scalable AWS applications using Java and Spring Boot. Designs, develops, tests, debugs, and operationalizes production code; reviews team contributions; improves system stability through automation and remediation. Promotes responsible AI-assisted engineering practices, secure SDLC validation, monitoring, and reuse of effective patterns. Evaluates vendor and internal architectural solutions while coaching engineers on secure, compliant AI tool adoption.

Leads backend software engineering for secure, scalable digital banking applications. Designs, develops, tests, troubleshoots, reviews, and debugs production code using Java, Spring Boot, AWS, Kafka, databases, and observability tools. Drives automation, operational stability, secure SDLC practices, and responsible AI-assisted engineering adoption. Evaluates vendor and architectural solutions while coaching teams on secure, reliable development practices.

Leads architecture and hands-on development of scalable backend systems and APIs supporting real-time applications. Owns the engineering lifecycle, writes high-performance code, establishes testing and reliability practices, resolves production issues, guides technical roadmaps, collaborates cross-functionally, and mentors engineers. The role requires expertise in object-oriented backend development, distributed cloud systems, automated testing, system monitoring, and technical leadership.

Build backend systems for ingesting, processing, and exposing health record data from EHRs and third-party platforms. Develop secure APIs, scalable data pipelines, and services that normalize and validate sensitive healthcare data. Collaborate with product, data science, and engineering teams, while contributing to code reviews, testing, documentation, privacy, security, and access control practices.

Build and maintain backend infrastructure and member-facing generative AI features that deliver personalized health and performance insights. Collaborate with Product, Design, Analytics, and Data Science teams to define requirements and deliver scalable solutions. Develop reliable software using Java, Kafka, AWS, and PostgreSQL; design RESTful APIs and relational databases; optimize performance; and maintain observability and monitoring systems.

Designs and maintains scalable backend services, APIs, data pipelines, automation, workflows, and business-system integrations. Collaborates with product, data, and internal business teams to deliver reliable technical solutions. Improves system performance, security, reliability, and maintainability; contributes to technical strategy, code reviews, and mentoring junior engineers.

Lead the design and implementation of scalable, reliable backend systems powering WHOOP’s member experiences. Drive technical planning for complex initiatives, establish engineering standards, deliver platform capabilities, and mentor engineers. Collaborate with product, design, data science, and performance science teams while balancing technical quality, business priorities, observability, and long-term maintainability.

Design, develop, and maintain scalable backend services, APIs, integrations, data pipelines, automation, and workflows for internal business systems. Partner with cross-functional stakeholders to translate business needs into technical solutions. Ensure system reliability, performance, security, and scalability while contributing to technical strategy, code reviews, engineering best practices, mentorship, and process improvement.

Design, build, and deliver scalable backend services powering WHOOP’s member-facing fitness, sleep, recovery, and integration experiences. Collaborate with engineering, product, design, data science, and performance science teams; translate requirements into technical plans; improve reliability, performance, testing, monitoring, and observability; and contribute through code reviews, documentation, knowledge sharing, and mentoring.

Build scalable backend services supporting growth experiments, e-commerce, and member engagement. Design and optimize APIs and infrastructure using Java, Kafka, Postgres, and AWS. Own development from requirements through deployment and monitoring, collaborate with Product, Design, Data, and Engineering teams, contribute to architecture decisions, and mentor junior engineers.

Develop and maintain scalable backend systems, APIs, and microservices supporting WHOOP’s platform and member experience. Collaborate cross-functionally to deliver features, improve reliability and performance, implement secure coding practices, and strengthen engineering standards. The role may align with Product Security or Application Infrastructure, involving cloud infrastructure, developer enablement, observability, and data privacy.

Develop and optimize scalable backend services, APIs, and infrastructure supporting acquisition funnels, e-commerce, membership growth, and experimentation. Write tested Java code, collaborate cross-functionally, contribute to architecture and code reviews, and deliver sprint commitments. Partner with data scientists and analytics engineers to measure performance and support growth initiatives.

Develop and maintain backend services and APIs using Java, Kafka, PostgreSQL, and AWS. Collaborate with product, design, data science, and engineering teams to deliver scalable features. Write tested code, participate in reviews, monitor production systems, troubleshoot issues, document solutions, and contribute to reliability and performance improvements.

Develop and integrate scalable backend software for real-time bidding and digital advertising systems. Build RESTful APIs with Python, Django, and PHP; manage Kubernetes/EKS and AWS production deployments; participate across the SDLC, including requirements analysis, testing, deployment, and integration. Collaborate cross-functionally, troubleshoot complex issues, support system reliability, conduct code reviews, mentor engineers, and promote engineering best practices. The role is onsite in New York four days per week and may require nights or weekends.

Lead software engineering projects and developers building distributed microservices and cloud-based systems for personalized marketing and messaging experiences. Collaborate with product managers, create scalable solutions supporting regulatory needs, mentor engineers, evaluate code, and apply modern technologies including Java, AWS, databases, containers, and AI tools.

Leads software engineering projects and developer teams building distributed microservices and cloud-based backend solutions. Collaborates with product managers, mentors engineers, evaluates code, and addresses regulatory and customer needs. Uses technologies including Java, Python, Go, Node.js, SQL, AWS, Docker, Kubernetes, relational databases, and NoSQL databases while staying current with emerging technologies and AI tooling.