Top Backend Engineer Jobs in Boston, MA

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.

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.

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.

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.

Build and operate Go-based automation for PostgreSQL provisioning, configuration, upgrades, failover, scaling, and decommissioning at GitLab.com scale. Develop a PostgreSQL-as-a-service platform, integrate cloud infrastructure and infrastructure-as-code tooling, improve database performance and reliability, and create safe upgrade automation. The role includes production ownership, architecture leadership, code reviews, documentation, cross-team collaboration, mentorship, and using AI agents in engineering workflows.

Design, develop, launch, and maintain scalable backend systems and APIs used by merchant and partner integrations. Collaborate with engineers and stakeholders, balance speed with system quality, debug code, conduct code reviews, and write tested, extensible software. The role requires experience with distributed systems, Python or Kotlin, AWS, MySQL, and Kubernetes, along with strong communication and ownership of professional growth.

Design, build, and maintain backend services and APIs using Ruby on Rails. Improve performance, scalability, reliability, and write well-tested production code. Collaborate with Product, Frontend, Data Engineering, and QA teams.

Build and ship backend systems and robust architectures for SMB and enterprise restaurant customers. Drive end-to-end development including planning, CI/CD, and productionization. Collaborate on product roadmap, iterate from user feedback, and contribute to team culture and growth.

Senior Backend Engineer responsible for designing scalable Java Spring microservices, implementing features, resolving defects, and improving backend architecture. The role involves event-driven systems, relational and NoSQL databases, testing, code quality, mentoring engineers, technical leadership, and collaboration with product teams. Engineers will also validate AI-assisted code, promote AI development practices, and work with cloud-native tools across AWS, Docker, Kubernetes, and continuous delivery systems.

Build and maintain Java/Spring Boot backend services and REST APIs, design relational database schemas and queries, deploy and support AWS services, troubleshoot production issues, and participate in code reviews. Collaborate with engineering, product, and QA teams while using AI-assisted development tools to accelerate learning and delivery. The role offers mentorship and growth toward independent ownership of production systems.

Senior backend engineer responsible for designing and implementing new features, scaling and optimizing the platform, improving Postgres and Elasticsearch performance, fine-tuning LLMs, and making architectural decisions. Collaborate with engineering team, take ownership of features, write performant, maintainable code, and help shape product and infrastructure for data-intensive applications (NLP, search, indexing).

Design, extend, and maintain Node.js backend services, modules, APIs, and integrations supporting real-time translation. Build distributed, event-driven systems using messaging, streaming, caches, and NoSQL stores. Own complex features from design through delivery, debug production issues, improve reliability and maintainability, write comprehensive tests, participate in code reviews, and collaborate with Product and engineering teams. Use AI-assisted development tools responsibly in a fully remote environment.

Design and build robust backend services and secure APIs for finance and reader applications. Implement authentication, payments, subscriptions, and finance workflows. Design Postgres/Redis schemas, integrate with financial APIs (BSE Star MF, NSE) and DRM services, and ensure compliance-friendly data handling.

Design, build, and optimize scalable backend services, APIs, and data pipelines. Integrate with third-party billing/commerce systems, maintain serverless/event-driven architectures on AWS, ensure security and performance, implement automated tests and CI/CD, mentor engineers, and drive architectural decisions.

Own and ship backend services in production, make long-term architecture decisions, use generative AI daily to improve development, collaborate with founders and cross-functional teams, and maintain operational reliability for enterprise-scale systems.

Develop, maintain, and optimize mission-critical backend APIs and scalable cloud services for web and mobile clients. Implement secure, high-performance systems, automated tests, observability, and technical documentation. Mentor peers, follow best practices, and support a proof-of-concept launch and fundraising activities as a volunteer contributor.

Build and own the graph layer and RAG architecture enabling agent reasoning over full patient context. Select graph DBs, design query patterns, and ensure temporal coherence. Implement event-driven Kafka pipelines for auditable, immutable agent workflows and enforce ReBAC permissions. Prioritize safety and scalable AI-assisted workflows, participate in spec and plan reviews, and drive architecture decisions.

Build and scale backend systems for a high-traffic donor CRM and payments platform. Own performant SQL and realtime querying, optimize payment flows, implement AI agents, and collaborate across product and design to ship resilient, production-grade features at scale.

Design, build, test, and support EPIC integration solutions across the full interface lifecycle. Gather requirements, resolve integration issues, develop standards and documentation, and provide production support within a remote, volunteer, part-time setup.

Build and own end-to-end frontend features for Ketryx's AI platform. Collaborate with designers, product, and customer teams to design accessible React/Next.js interfaces using Tailwind and shadcn, create and document a component library, refactor UIs, mentor teammates, and provide technical customer support. Contribute to backend and database work as needed.

Develop and operate backend systems supporting post-transaction processing for Affirm Card. Break down projects, write tested and extensible code, collaborate with product and engineering teams, monitor system health, troubleshoot issues, participate in on-call support, and contribute to code reviews and team development.

Leads backend engineering for a payments platform by designing scalable Golang microservices and RESTful APIs, driving architecture, improving reliability and observability, and supporting production systems. Collaborates across product and engineering teams, participates in on-call operations, establishes SLOs and incident processes, manages technical debt, and mentors junior engineers.