Top Senior Full-Stack Engineer Jobs in Boston, MA

As a Senior Full-Stack Engineer, lead development of secure AI-driven SaaS applications, focusing on backend architecture, frontend design, and AI integrations. Collaborate with teams to operationalize models and enhance application functionality through cutting-edge AI solutions.

Design, build, and own scalable, secure full-stack applications. Collaborate with engineers, designers, and managers to gather requirements, estimate work, maintain documentation, and deliver high-quality client-facing software using Agile practices.

Design, build, and maintain production-grade .NET web applications and APIs on Azure. Own full-stack delivery from data models and SQL to front-end components, CI/CD, testing, and architecture. Collaborate with product and delivery teams, participate in code reviews, and ensure secure, observable, well-tested services.

Design and build agent-powered mission consoles, collaborate with stakeholders to improve user workflows, and maintain agentic workflows for mission outcomes.

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.

Design and implement full-stack applications for GenAI, build developer tooling, collaborate with product teams, and enhance AI agent delivery.

Build end-to-end features in a JS/TS stack, designing scalable backend services and responsive real-time frontends. Improve observability, performance, and reliability, collaborate with product/design, and own full-stack implementation from APIs and data models to UI.

Build and maintain core platform features, expand Infisical PKI/SSH/KMS product lines, collaborate with CTO and engineers, communicate with enterprise customers, and prototype AI applications for secrets management.

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.

Design, architect, and build full-stack web applications and AI-powered solutions integrating LLM APIs, RAG pipelines, vector databases, and agentic frameworks. Lead code reviews, mentor engineers, support PoC engagements, and maintain cloud-native, containerized deployments with CI/CD best practices. Advocate AI-augmented engineering workflows and produce technical documentation for ATC lab environments and customer-facing prototypes.

As an Operations Reliability Engineer, design and implement automations to eliminate manual tasks in brokerage operations, focusing on efficiency and reliability while collaborating with cross-functional teams.

Lead and improve engineering practices for a global pricing platform: design and build scalable Java Spring Boot microservices and React frontends, own APIs and data integrations (Kafka, BigQuery), mentor engineers, drive testability, CI/CD, observability, and adoption of AI-assisted development workflows.

Design, build, and operate end-to-end features across a React frontend and Node.js/TypeScript backend. Implement secure, performant APIs, model and optimize PostgreSQL data, deploy and monitor services on AWS, improve engineering standards through code reviews and testing, troubleshoot production issues, and contribute to scalable system architecture in a distributed team.

As a Senior Full Stack Engineer, you'll design and develop custom Shopify applications, integrate solutions, and collaborate with clients to meet their needs.

As a Senior Fullstack Developer, you will build and maintain moderation and user-safety applications for Bluesky's Trust & Safety team, collaborating with product teams and improving tools based on user feedback.

As a Senior Full Stack Engineer, you'll build high-performance observability tools, engage with developers, and tackle technical challenges in monitoring applications.

As a Senior Full Stack Engineer, you'll lead development of features in Node.js/React, maintain data pipelines, and support code quality in a collaborative, innovative environment focused on scientific research.

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

Lead design and rewrite of cloud-native core systems. Build scalable back-end services and front-end features, drive architecture and testing discussions, mentor engineers, and improve telemetry, performance, and reliability.

As a Senior Fullstack Engineer, you will enhance the e-commerce platform, focusing on user interface, backend services, and external integrations while mentoring team members and advocating for best practices.

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.

Build and own data-driven dashboards and backend services for DeFi risk analysis. Develop React frontends, GraphQL APIs, and cloud-native data pipelines. Collaborate with research and protocol teams, mentor junior engineers, drive architectural improvements to the Alert Portal, ensure code quality through testing and reviews, and identify product and technical enhancements.

Design, develop, and maintain web-based UI and REST middleware for federal health IT systems. Participate in Agile/SAFe ceremonies, write design documents, implement features, resolve bugs, and support CI/CD pipelines while collaborating with product, QA, and stakeholders.

The role involves owning the product workflow, building user-facing features, maintaining systems, and collaborating with cross-functional teams. Strong React and Typescript skills are essential.

Design, build, and maintain scalable web applications using Python and React. Collaborate with teams and ensure application security and performance.