Top Senior Full-Stack Engineer Jobs in Boston, MA

Architect, design, build, test, and deploy highly available real-time systems. Participate across the SDLC, implement automated testing and CI/CD, maintain documentation, troubleshoot and enhance existing software, and collaborate in an Agile/Scrum team environment.

As a Senior Full-Stack Software Engineer, you will build AI-centric web applications, collaborate on product decisions, and manage project priorities. You'll work with TypeScript and modern frameworks to create high-quality user experiences.

As a Senior Full-stack Engineer, you'll lead user-facing development, mentor engineers, set technical direction, and leverage AI in workflows while coding 60-70% of the time.

The role involves leading engineering efforts in backend and full-stack development, working with enterprise customers, and building scalable systems for automation and asset management, while applying AI tool advancements.

As a Senior Full-Stack Engineer, you'll develop features for Circle's CRM platform, collaborating on both front-end and back-end tasks and participating in the entire development lifecycle.

Design and maintain full-stack features for real-time video, events, chat, and notifications, collaborating with teams to improve performance and reliability.

The Senior Full Stack Software Engineer at Dropbox will design and develop user-friendly experiences, manage projects end-to-end, and collaborate across teams while leading initiatives and delivering AI-enabled product enhancements.

Design, build, and run full-stack growth experiments end-to-end to improve acquisition, activation, engagement, and monetization. Collaborate with product, design, and analysts, analyze results, iterate quickly, and contribute to experimentation platform and growth infrastructure.

Lead modernization of a legacy .NET/SQL Server payment-integrity platform: migrate services to modern .NET, design reliable RESTful APIs, improve database performance, implement security and observability, and use AI agents to accelerate refactors and testing while partnering with product, UX, DevOps, and QA to ship high-quality features.

Design and implement core functionalities for a large-scale web application focusing on architectural planning and full-stack features development. Collaborate with senior engineers and ensure clear communication while breaking work into manageable pieces.

As a Senior Full Stack Engineer, you will develop scalable software solutions, mentor junior engineers, and improve system performance by integrating various technologies.

Build full-stack, user-facing features alongside ML engineers using TypeScript, Node.js, GraphQL, and Postgres. Implement and integrate AI/LLM/ML tools, own features end-to-end from design to production, maintain scalability/reliability/observability, participate in code reviews and design discussions, and contribute to product ideation and RFCs.

Lead design, build, and scale GridUnity's cloud SaaS platform. Own end-to-end features, mentor engineers, drive architecture, improve scalability/reliability/security, collaborate with product teams, and introduce engineering best practices and tooling.

The Senior Full-Stack Software Engineer is responsible for building and maintaining software solutions, troubleshooting and debugging, and collaborating with various teams to enhance user-facing features, ensuring high-quality coding practices and documentation.

Design, build, and maintain resilient full-stack services for distributed financial SaaS systems. Lead end-to-end projects, optimize performance, ensure security and observability, mentor teams, and reduce technical debt.

Design, build, deploy, and optimize scalable full-stack applications integrating databases, APIs, and AI/LLM workflows. Lead architecture, CI/CD (ArgoCD, GitLab), Airflow pipelines, and collaborate cross-functionally to deliver production-grade fintech solutions.

Lead full-stack projects, collaborate with cross-functional teams, set high quality standards, mentor teammates, and participate in on-call rotations.

The Senior Full-Stack Engineer will develop user-facing features, maintain high-performance interfaces, implement backend APIs, and ensure product reliability and performance in a growing AI marketplace.

As a Senior Full Stack Engineer, you'll design and scale core features for Calendly's AI Notetaker, lead feature implementation, and mentor team members.

The Senior Full-Stack Developer is responsible for architecting, developing, and maintaining complex web applications. They collaborate with Marketing and IT to ensure successful implementation of strategic features, manage CI/CD pipelines, and advocate for best engineering practices.

Design and implement full‑stack features for the Creatives Library: build scalable, performant web applications, collaborate with product and design, write technical designs, own projects end‑to‑end, mentor junior engineers, and participate in code reviews using modern stacks.

Build end-to-end AI features across the stack: backend Go services orchestrating agentic workflows and tool integrations, frontend TypeScript/React experiences, APIs, workflow orchestration, performance and observability improvements, and mentor junior engineers.

Design and build core services for AI products, implement compliance guardrails, debug fullstack issues, and participate in code reviews.

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

Design, develop, and maintain scalable software applications, particularly focusing on AI infrastructure and rapid prototyping based on customer feedback.