Top Senior Full-Stack Engineer Jobs in Boston, MA

The Full Stack Engineer will architect and build 'The SOURCE®' platform, integrating AI and automating workflows while ensuring scalability and simplicity.

The Senior Full Stack Engineer will design and maintain features across backend and frontend systems, focusing on scalability and security while collaborating on production-grade solutions in a fast-paced environment.

As a Senior Full Stack Engineer, you'll build interactive customer experiences, manage backend architecture, write well-tested code, and ensure smooth production processes.

This role involves designing and developing software features for Tulip's composable no-code platform, collaborating with teams, and mentoring other engineers.

Lead design and delivery of provider-facing backend services and frontend applications. Own features end-to-end, mentor engineers, build React/TypeScript interfaces, design DRF REST APIs and database schemas, use LLM tooling (Claude) to accelerate development, and operate services on Kubernetes/GCP with Datadog for monitoring.

The Senior Full-Stack Developer will manage architecture and delivery for a web application, integrating historical data into SAP S/4HANA. Responsibilities include overseeing development, integrating cloud identity, and leading architectural documentation.

Develop consumer-centric web applications, enhance usability, collaborate with designers, implement backend software and APIs, write tested code, and follow agile development cycles.

As a Senior Full-Stack Engineer, lead design and development of complex search features, optimize development processes with AI tools, and mentor juniors in a collaborative environment.

The Senior Full-Stack Engineer will design, implement, and maintain systems for Trading API customers, focusing on both frontend and backend development, while leading projects and mentoring peers.

The Senior Full Stack Engineer will design, build, and scale healthcare integrations, ensuring high security and quality, while collaborating with cross-functional teams and supporting enterprise-level integrations.

As a Senior Full-Stack Software Engineer, you will build AI-centric web applications in TypeScript, manage project priorities, and make technology decisions while collaborating with Product and Design teams.

Build and ship complex consumer-facing full stack applications. Work on React/TypeScript frontends (offline PWAs using IndexedDB/DexieJS and Workbox) and Scala/Play backends with PostgreSQL. Deploy on AWS via Kubernetes. Mentor engineers, collaborate in product-focused cycles, and thrive in a fast-moving startup environment.

Design and build features across a React/TypeScript frontend and Go backend for real-time dispatch systems. Implement WebSocket-driven tracking, GIS integrations, multi-tenant architectures, performance and state management improvements, production debugging, and collaborate with Product and Operations to deliver agency commitments.

Senior CRM systems full stack engineer to design, develop, integrate, and maintain Salesforce and Salesforce Marketing Cloud solutions. Build ETL pipelines, AWS microservices, and integrations, provide tier-3 support, lead testing/UAT, document requirements, and train teams while ensuring code quality and deployment processes.

Build and maintain scalable full-stack features for a fintech SaaS platform. Implement React front-ends and Node.js/NestJS back-end APIs, troubleshoot production systems (databases, queues, caches, microservices), write tests and clean code, collaborate with product and design, participate in code reviews, and prioritize technical debt while scaling the user base.

Design, develop, and maintain full-stack web applications using Java/Spring Boot backends and Angular frontends. Build RESTful APIs, write clean code, collaborate with cross-functional teams, troubleshoot issues, and participate across the SDLC.

Design, develop, and maintain web applications and RESTful APIs using Java/Spring Boot. Develop and maintain PL/SQL stored procedures and Oracle database logic. Participate across the SDLC, troubleshoot backend and database issues, collaborate with cross-functional teams, and improve development processes and tooling.

Lead consolidation and modernization of two legacy giving marketplace applications into a single scalable stack. Re-architect, refactor, and optimize back end (Java, Spring Boot, Hibernate) and front end (Angular, NgRx, SCSS). Implement features, ensure UI/UX feasibility, address performance and scalability, conduct code reviews, and collaborate with the team to deliver a robust application.

Design, develop, and maintain web applications using Java/Spring Boot backends and Angular frontends. Build RESTful APIs, write clean maintainable code, participate across the SDLC, collaborate with cross-functional teams, troubleshoot full-stack issues, and help improve development processes and tools.

Lead full‑stack development of enterprise web and middle‑tier applications for financial advisors using Angular/TypeScript and Java/Spring. Design, implement, test, and deploy features in an Agile Scrum team, driving CI/CD, cloud (AWS) deployments with Docker, Kubernetes, and Terraform, while mentoring engineers and collaborating with business stakeholders.

Design, build, and maintain backend applications, microservices, and APIs; implement third-party integrations; ensure security, testing, and documentation; deliver client-facing features; collaborate with product and business stakeholders; estimate scope/timelines; work across the stack to create scalable, high-performance systems.

Own and ship end-to-end full-stack features for a high-scale, AI-native publishing marketplace. Design APIs, optimize queries, deploy cloud-native apps, build LLM-powered capabilities, ensure security and privacy compliance, mentor engineers, influence architecture, and maintain reliability and performance under load.

Build and operate end-to-end premium purchasing and subscription systems (Stripe, Apple/Google IAP, payments). Own projects from design through rollout and reliability, instrument observability, debug production, define metrics, mentor engineers, and drive technical direction and standards.

Build end-to-end full‑stack features for AI agents, spanning UI (React/TypeScript), backend services (Elixir/Go/Python), APIs, and integrations. Drive architecture, code quality, CI/CD, testing, observability, feature-flagged delivery and A/B experiments. Partner with product/design, mentor junior engineers, and apply emerging AI models and tools to improve agent reasoning, actions, and business impact.

The Sr. Full Stack Developer will design and build full-stack applications, focusing on AI-powered solutions, and lead code reviews while mentoring junior engineers in the Advanced Technology Center.