Top Full-Stack Engineer Jobs in Boston, MA

Build and maintain full-stack features using React, Next.js, and TypeScript. Develop backend services with Node.js, PostgreSQL, and RPC architectures. Contribute to AI/LLM-adjacent codebases, handle sensitive regulated healthcare data, and collaborate with product, QA, and design in an Agile, remote-friendly environment.

Design and build low-latency .NET backend services and Angular UIs for a large financial platform. Work with microservices, message-driven systems (Kafka/RabbitMQ), GitHub Actions CI/CD, and Splunk observability. Ensure >80% test coverage, define OpenAPI contracts, write unit/integration tests, and participate in Agile processes and peer code reviews.

Full-stack engineers will develop features for a system used by radiologists, focusing on low-latency WebSocket workflows and UI/UX design.

Build and own complex frontend features using Vue 3 and TypeScript while developing the Python services and APIs that power them. Improve performance, accessibility, testing, CI/CD, and observability; collaborate with product and design; mentor engineers and apply AI-assisted development tools responsibly to accelerate productivity and maintain quality and security.

Design and implement scalable backend services for payment and transaction workflows using Java. Own end-to-end features from data model and APIs to Angular frontends, improve reliability and performance, refactor legacy systems, troubleshoot production issues, and collaborate with product and design. Leverage AI-assisted development tools responsibly and share best practices across the team.

As a Senior Software Engineer, you will design and build a cutting-edge identity search platform and implement AI systems for defense applications, working closely with cross-functional teams to enhance user workflows and support national security.

Own and evolve an internal portfolio management and decomposition platform. Build full-stack applications and backend systems for high-performance data processing, attribution, and reporting. Collaborate with PMs, quants, and engineers to deliver scalable, cloud-ready tools that support real-time investment decision-making and improve the investment process.

The role involves leading the development of a full-stack platform for biopharma, focusing on architecture, UX, backend services, and API integrations, while ensuring reliability and collaboration with cross-functional teams.

Design, build, and scale backend services and APIs for a conversation intelligence platform. Collaborate on architecture, ship greenfield and production systems, maintain reliability and performance, debug production issues, mentor engineers, and contribute to frontend work when needed to deliver end-to-end product experiences.

The Full Stack Engineer will develop advanced cybersecurity platforms for healthcare, focusing on secure architectures, digital twin technologies, and CI/CD pipelines while collaborating with cross-functional teams.

Lead design, development, and delivery of cloud-native full-stack applications using Java (Spring Boot) and React. Architect scalable Azure-based solutions, drive DevOps/CI-CD and IaC practices, mentor engineers, lead architecture reviews, support production reliability, and collaborate with stakeholders to balance delivery with long-term technical health.

Responsible for leading a team of engineers, supporting product development, identifying technical issues, and ensuring high-quality code delivery in backend systems at scale.

Design, build, and operate production-grade Java-based enterprise applications and microservices. Implement RESTful APIs, front-end features with React, and relational database schemas and tuning. Deploy and manage applications on AWS/Azure/GCP using CI/CD, containerization, and observability practices. Perform debugging, troubleshooting, and root-cause analysis; contribute to architecture and DevOps practices.

Senior technical leader responsible for end-to-end architecture and technical direction of a performance measurement and attribution calculation platform. Own cross-cutting design, lead cross-team integration, prototype and adopt AI/ML, mentor senior engineers, and write code for the hardest problems to ensure performance and correctness at scale.

Own end-to-end full‑stack features: design data models and clinical APIs, build backend services (TypeScript/Nest.js/Node.js on AWS), and implement React+TypeScript frontends. Deliver responsive clinical workflows, reimbursement integrations (MDS), FHIR extensions, EHR/vendor integrations, CI/CD, monitoring, and HIPAA/SOC2 readiness. Partner with clinicians, visit facilities, mentor hires, and iterate with product and design.

Design, develop, test, and maintain firmware, user interfaces, PC applications, and web services for machine vision sensors. Lead scrum stories, drive design reviews and code quality, mentor junior developers, integrate core vision features, debug customer issues, and collaborate with product, marketing, and support teams to meet milestones.

Design and implement backend features in Go, build data pipelines and REST APIs, work with PostgreSQL and AWS, contribute to scalable system design, and optionally develop React.js user-facing features while collaborating in a fast-paced AI-focused startup.

Build and own end-to-end full-stack features across backend services and user-facing applications. Contribute to system design, reliability, performance, observability, and engineering practices while collaborating with product and design.

Lead design and implementation of the PSA Liquidity Platform connecting buyers and sellers. Build buyer tooling, matching/ranking engines, and seller experiences. Architect and operate microservices and Kafka-driven systems on Kubernetes/AWS, instrument observability, apply AI tooling across the SDLC, and drive cross-functional delivery from 0-to-1 while owning end-to-end outcomes.

Develop and enhance product features, specifically focusing on third-party integrations and application management while ensuring scalability and improving customer experiences.

Design and develop back-end microservices and REST APIs for connected devices, web and mobile apps; collaborate with front-end/mobile teams; optimize system performance; build CI/unit test automation; document APIs; follow Agile/Scrum processes and cloud-based distributed scaling.

Lead full-stack developer responsible for architecting and delivering end-to-end frontend solutions using React/TypeScript. Oversee a team, build accessible responsive UIs (Section 508/WCAG), integrate REST/GraphQL APIs, implement automated tests and CI/CD, deploy containerized apps, translate user requirements into performant interfaces, and support mission-driven DoD/C2 systems requiring Secret clearance eligibility and Security+ certification.

Lead full-stack developer responsible for designing and delivering end-to-end C2 systems. Oversee a team, build backend microservices and REST APIs, work with relational and NoSQL stores, Kafka, containerized deployments, React frontends, CI/CD and automated testing, and translate mission and reliability requirements into scalable, resilient architectures. Must be eligible for Secret clearance.

As Vice President, Full-Stack Developer, you'll lead the development of scalable applications, design APIs, ensure coding excellence, integrate AI technologies, and mentor teams.

As a Full Stack Engineer III at Calendly, you'll develop features, scale the platform, and mentor team members while using various technologies.