Top Backend Engineer Jobs in Boston, MA

Develop and maintain backend services and APIs supporting WHOOP member-facing features. Collaborate with product, design, data science, and engineering teams to deliver scalable solutions. Write tested code, participate in reviews, monitor production systems, troubleshoot issues, document solutions, and contribute to reliable, high-performing distributed systems using Java, Kafka, PostgreSQL, and AWS.

Design, develop, test, deploy, and monitor scalable backend systems for a payroll SaaS product. Build APIs and microservices, collaborate with product and engineering teams, participate in code reviews, and own the full development lifecycle in a continuous delivery environment. The role emphasizes Kotlin, Scala, or Java, cloud platforms, automated testing, relational databases, scalable architecture, and responsible use of AI coding tools.

Lead architecture and development of backend services, APIs, integrations, and internal tools supporting supply planning, inventory, orders, fulfillment, logistics, and membership operations. Set technical direction, deliver complex initiatives, improve system security and resilience, partner cross-functionally, and mentor engineers. The role requires designing scalable distributed systems, integrating enterprise platforms and cloud services, managing data consistency and recovery, and translating ambiguous business needs into reliable technical solutions.

Own backend engineering goals for Consumer Engineering, lead delivery of scalable systems, collaborate with product, design, and analytics, improve reliability and code quality, resolve technical and business issues, support on-call operations, and mentor engineers.

Own quarterly engineering goals, lead backend engineers through ambiguous problems, collaborate with product and analytics partners, improve system reliability and availability, monitor operational metrics, establish quality standards, and mentor team members. The role requires designing and launching highly available distributed backend systems at scale using Python or Kotlin, AWS, MySQL, and Kubernetes, while driving technical planning and safe changes across large codebases.

Design and evolve high-scale backend capabilities for GitLab’s container registry. Drive architecture, performance, reliability, security, APIs, testing, and operational readiness. Mentor engineers, influence technical direction, participate in incident response, and collaborate asynchronously across product, infrastructure, data, frontend, and security teams. Integrate and evaluate agentic AI systems in production engineering workflows while promoting responsible and effective use.

Leads cross-team backend initiatives and technical architecture for GitLab’s Core DevOps platform. Responsibilities include modernizing a monolith, establishing service, API, data, security, testing, and observability standards, guiding Go and Kubernetes practices, supporting Rust adoption, participating in incident response, mentoring engineers, reducing technical debt, and advancing AI-assisted engineering workflows.

Develop and launch reliable backend systems using Python or Kotlin, AWS, MySQL, and Kubernetes. Break projects into deliverable phases, collaborate with product, design, and analytics teams, monitor system metrics, support availability and on-call operations, debug code, conduct code reviews, and contribute to team growth and interviewing. The role requires 1.5+ years of software engineering experience and strong communication skills.

Build and deliver backend payment-processing features using Kotlin, scalable APIs, microservices, and containerization. Develop automated tests, monitor feature rollouts, collaborate with UX and product management, and participate in design and code reviews. The role supports Toast’s unified payments platform and requires East Coast working hours.

Lead large-scale initiatives for a high-performance Linux-based network sensor, improving ingestion, scalability, continuous capture, queue reliability, observability, and production diagnostics. Own root cause analysis and postmortems, establish engineering standards, translate business goals into technical plans, and mentor engineers through design and code reviews. The role requires deep Rust expertise, distributed systems experience, concurrent programming, packet capture, message brokers, and cybersecurity best practices.

Architect and operate Affirm’s large-scale Amazon EKS compute platform, including cluster lifecycle, node management, autoscaling, shared components, infrastructure automation, workload safety policies, observability, cost and capacity optimization, and self-service workflows. The role drives technical strategy, mentors engineers, partners cross-functionally, and participates in on-call incident response.

Lead the architecture and technical strategy for Affirm’s high-volume observability platform. Design telemetry pipelines and sampling strategies, improve reliability and cost efficiency, integrate observability into AI-assisted development, and drive platform adoption across engineering teams. Remain hands-on while mentoring six engineers, leading cross-functional initiatives, establishing engineering standards, and overseeing monitoring, alerting, on-call operations, and system availability.

Build and operate high-throughput backend services for AI agents, calendar, scheduling, integrations, real-time data pipelines, and APIs. Design platform infrastructure, event-driven systems, and client-server protocols using Go, PostgreSQL, Kubernetes, and cloud platforms. Collaborate with AI, product, and frontend teams, improve reliability through testing and infrastructure as code, and mentor junior engineers.

Build and operate GitLab’s Rust-based Knowledge Graph backend supporting SDLC and code indexing, graph queries, MCP endpoints, AI agents, and analytics. Integrate with Rails, ClickHouse, NATS JetStream, and Data Insights systems. Improve reliability, observability, scalability, and operational readiness through testing, metrics, runbooks, alerts, and on-call participation. Collaborate asynchronously across product, data, infrastructure, security, and AI teams while contributing to system design and occasional Ruby or frontend work.

Build and enforce workload safety standards across Affirm’s Amazon EKS fleet. Responsibilities include Kubernetes resource management, workload isolation, disruption handling, cluster capacity analysis, policy automation, production debugging, incident response, fleet-wide rollouts, technical leadership, mentoring, and measuring infrastructure impacts on availability, latency, risk, and cost.

Build and ship backend features end-to-end using Ruby on Rails and SQL. Lead complex technical projects, solve architecture challenges, establish standards, conduct meaningful code reviews, resolve high-risk bugs, document systems, collaborate across engineering teams, and mentor junior engineers.

Build and ship full-stack sourcing products with a backend focus, including domain models, APIs, event-driven services, data systems, and ERP integrations. Collaborate with product, design, frontend, and QA teams; review AI-generated code; ensure system quality, type safety, and reliable testing; adapt across product areas; document decisions; and mentor engineers.

Build and maintain backend features for a telehealth platform using TypeScript, Node.js, APIs, SQL databases, AWS, and serverless technologies. Develop application logic, integrations, automated tests, and documentation; debug services; participate in code reviews; and collaborate with product and frontend teams. The role offers mentorship and progressive ownership while emphasizing security, reliability, data privacy, and AI-assisted development.

Build and maintain shared backend services, APIs, reusable components, database integrations, developer tools, and serverless infrastructure for a telehealth platform. Work with TypeScript, Node.js, SQL databases, AWS, and event-driven systems while writing tests, troubleshooting production issues, improving observability, and supporting deployment workflows. Collaborate with experienced engineers, participate in reviews, document systems, use AI-assisted development tools, and gradually own platform improvements.

Build and maintain backend features for a telehealth platform using TypeScript and Node.js. Develop APIs, services, database functionality, integrations, background jobs, and serverless applications. Write tests, debug production issues, participate in code reviews, maintain schemas and documentation, and collaborate with product and frontend teams. The role offers mentorship and progressively greater ownership of production features.

Build and maintain backend services for payments, subscriptions, billing, and revenue workflows. Develop APIs, integrations, webhooks, asynchronous processes, database models, and event-driven AWS services. Ensure transactional accuracy through validation, retries, idempotency, testing, monitoring, and reconciliation. Investigate production billing issues, collaborate with product, finance, and operations teams, document workflows, and own features through deployment. Use TypeScript, Node.js, SQL, and AI-assisted development tools in a hands-on engineering environment.

Design, build, and maintain backend systems for payments, subscriptions, billing, and revenue workflows. Develop APIs, integrations, event-driven processing, database models, reconciliation tools, access controls, testing, monitoring, and reliability safeguards. Own complex initiatives from architecture through production, investigate incidents, collaborate with finance and product teams, and provide technical guidance while using AI-assisted development tools responsibly.

Build and operate the core Rails-based platform for workplace retirement and TPA products. Responsibilities include end-to-end feature development, scalable APIs and data models, agent-facing tools with permissions and audit trails, data integrations with payroll, payments, identity, and recordkeepers, architecture discussions, deployment, monitoring, and mentoring. The role requires strong Ruby/Rails expertise, AWS familiarity, third-party integration experience, and thoughtful design for reliability, compliance, and financial workflows.

Build and ship backend features for Clubhouse’s live audio, reactions, clips, houses, and replays. Evolve scalable backend systems, collaborate with product, design, engineering, and data science teams, run experiments, and make pragmatic tradeoffs that improve engagement and retention for millions of users.

Lead technical vision and strategy for Affirm’s Cards backend engineering organization. Architect scalable and reliable platforms, guide cross-team initiatives, champion AI adoption and engineering excellence, influence technical roadmaps, and mentor engineers through Staff level. The role requires strong architectural expertise, organizational leadership, project management, communication, and cross-functional collaboration.