Top Senior Full-Stack Engineer Jobs in Boston, MA

Build and maintain member- and host-facing features across web and mobile. Design scalable front-end architectures, ship React/Next.js and React Native/Expo apps, use AI tooling, own features end-to-end, collaborate with product and cross-functional teams, and contribute to testing and production readiness.

The Senior Full Stack Engineer will lead quality assurance strategies, develop automation frameworks, mentor engineers, and contribute to full-stack development while leveraging AI in testing.

Lead development of a passwordless, zero-trust platform using C++. Own complex, multithreaded systems, build CI/CD pipelines, write unit tests, perform Linux administration, apply image-processing with OpenCV, and use Python for scripting and integration. Collaborate in a fast-paced environment and mentor engineers.

The Senior Full-Stack Engineer will develop and ship features across frontend and backend systems, work with various frameworks and databases, write specifications, and improve development processes.

Design, build, and scale data integrations for healthcare systems, collaborating with teams and enhancing functionality while ensuring security and quality.

Own and scale backend systems end-to-end: design, build, and deploy performant APIs and services on AWS using Node/TypeScript. Make architectural tradeoffs, ship production code frequently, establish engineering best practices, and collaborate with product teams while leveraging AI-assisted development.

Design, build, and own end-to-end features for AI-powered finance agents and agent orchestration. Implement integrations with accounting and payment platforms, create dashboards and reporting, ensure security and data integrity, make architectural choices, monitor production, and drive AI-assisted, agentic development workflows.

As a Senior Full Stack Engineer, you'll design and build high-performance web applications, manage end-to-end solutions, and collaborate with teams to enhance user experiences.

As a Senior Fullstack Engineer, you'll develop and maintain scalable APIs and web applications, engage with customers to meet their needs, and collaborate on product features to improve Layer Health's applications.

As a Senior Fullstack Engineer, you'll architect and build a high-concurrency auction engine, leveraging AI for enhanced user experiences and system reliability.

As a Senior Fullstack Engineer, you'll build financial systems, design lending infrastructure, implement payment integrations, and create user interfaces, ensuring correctness and reliability.

The Senior Full Stack Engineer builds and ships features across frontend and backend systems, working with various frameworks and databases, while collaborating on technical specifications and improving developer experiences.

As a Senior Full-Stack Engineer at ClassDojo, you'll deliver code and features collaboratively, improve systems and practices, and mentor other engineers, all while impacting education for millions of children.

Join the Entefy team as a Senior Full Stack Engineer to build a scalable full stack application enhancing digital interaction for global clients.

Develop applications for game operations, build backend APIs, and frontend components using various technologies, collaborating with teams across the company.

Lead the design and development of scalable data infrastructure supporting satellite operations and Earth observation, optimizing cloud-native data pipelines and systems.

Lead and contribute to an agile scrum team to deliver scalable web application features within sprints. Complete user stories, troubleshoot issues, design and implement complex software solutions, mentor developers, and maintain system architecture, SDLC adherence, and technical documentation. Must meet DHS EOD and fitness requirements.

Senior Full Stack Engineer (backend-focused) to design, build, and operate scalable backend systems and APIs, deliver full-stack features, improve reliability and observability, and contribute to architecture and technical strategy in a fast-paced startup environment.

Lead design and delivery of consumer-facing web applications for school stores and book clubs. Build front-end experiences with React, contribute backend Python work, design APIs and data models, implement testing and monitoring, mentor engineers, and improve development processes across the full software lifecycle.

The Senior Full Stack Developer will build end-to-end solutions, collaborate in a remote environment, and write technical documentation. The role requires expertise in Ruby on Rails and various programming paradigms.

Own end-to-end growth features across the stack (TypeScript/Node.js backend, React frontend) to drive acquisition, conversion, retention and monetisation. Design architecture, run A/B experiments, instrument metrics, use AI-assisted tools in engineering workflows, mentor juniors, and iterate rapidly with PMs and designers.

Design, build, and maintain backend services, data processing, REST APIs, and Electron-based thick client desktop applications. Ensure secure, scalable client-server architectures, process structured data at scale, support containerized development and automated build pipelines, collaborate with designers, and mentor junior engineers while following Agile best practices.

Design, build, test, deploy, and support full-stack, cloud-native claims applications. Develop Java/Spring Boot microservices, responsive JavaScript/TypeScript frontends, scalable APIs and event-driven integrations on AWS. Improve CI/CD, observability, performance, security, and reliability. Troubleshoot production issues, mentor engineers, and collaborate in Agile cross-functional teams to modernize claims technology.

The Senior Full-Stack Engineer will develop new features and improve existing functionality, collaborate with the product team, and resolve bugs while influencing architectural decisions.

The Senior Full-Stack Engineer will build end-to-end features, create APIs, write requirement documents, and learn Rust while improving product experiences for users.