Software Engineer Jobs in Cambridge, MA

Lead design and ownership of an agentic orchestration platform for long-running, multi-agent scientific workflows. Architect durable, event-driven, cloud-native systems, define SDKs/APIs, deliver IaC reference implementations, optimize cost and scalability, set platform standards, and partner across modeling and product teams while mentoring engineers.

Design and build Machine Learning libraries, implement CI/CD pipelines, and support Ray-based compute environments, collaborating with ML experts.

As a Senior Software Engineer, focus on backend development and AI integration for scientific applications, building systems that leverage advanced AI techniques.

The Sr Software Engineer II will develop scalable cloud-based software, lead technical projects, mentor engineers, and enhance engineering processes.

The Principal Embedded Software Engineer leads the development of complex embedded software for military and space applications, managing technical risks and providing expertise in real-time systems.

Lead design and implementation of scalable, secure health-data systems. Code and mentor engineering teams, drive cross-functional projects end-to-end, solve complex technical problems, and advance data integration and AI-enabled services.

The Sr. Software Engineer develops and enhances SaaS solutions for government, leading features in an agile environment and mentoring junior engineers.

Senior front-end engineer to implement UI/UX designs, build performant cross-browser interfaces, consume JSON APIs, use client-side MVC frameworks, CSS preprocessors, Bootstrap and jQuery, and contribute to architecture and testing. Role influences UX practice and intranet/collaboration rollouts.

The Senior Software Engineer will design AI features, maintain data pipelines, develop scalable ML serving infrastructure on AWS, and lead cloud-native software solutions.

Build and maintain full-stack features across Python backends and React frontends, design secure APIs, apply AI tools across the SDLC, mentor engineers, improve testing/observability, and collaborate with product and design to deliver scalable, production-ready systems.

Lead architecture and implementation of HubSpot's delivery platform, building large-scale CI/CD, build, test, and deployment systems. Design and ship AI-powered QA agents, drive platform roadmap toward extreme deploy throughput, own cross-team initiatives, and mentor engineering org while remaining hands-on in code and operations.

As a Senior Software Engineer, you'll design scalable data models, optimize performance, enhance a custom query engine, and develop data-driven features for complex customer needs.

Design and build scalable AI-first experimentation and growth systems: telemetry, experiment assignment, feature flighting, rollout automation, and risk controls. Lead cross-team initiatives, partner with Product/Data Science/Design, write production code, review implementations, and raise engineering and experimentation quality across products.

Design, build, and maintain high-performance, distributed backend microservices and cloud infrastructure. Lead technical delivery, own system reliability, integrate AI and streaming pipelines, mentor peers, and collaborate with product and frontend teams to deliver scalable APIs and data architectures.

Lead full-stack development for an AWS-based product: design and implement backend, data, and web UI; integrate external APIs and AI/ML features; collaborate cross-functionally; improve architecture and engineering practices; mentor teammates and deliver high-quality, production-ready code.

Design and implement pixel-perfect, high-performance web applications from wireframes to production. Collaborate with designers, PMs, and engineers, iterate on architecture and best practices, explore AI/ML integrations, and contribute to a collaborative engineering culture.

Hands-on Tech Lead to own full-stack systems end-to-end, set engineering standards, mentor engineers, drive releases, build AI/LLM-enabled products, and collaborate across teams to deliver secure, reliable software for federal customers.

Lead technical direction and architecture for the Fable backend, own platform reliability (databases, CI/CD, queues, observability), run incident response and postmortems, mentor engineers, collaborate cross-functionally with product/design/ML, and build platform capabilities enabling faster, safer delivery.

As a Staff Software Engineer in Applied AI, you will architect AI systems for vulnerability detection, collaborate across teams, and improve AI model performance.

As a Senior Software Engineer on the AI Platform team, you will develop AI security features, enhance vulnerability detection, integrate AI patterns, and collaborate across functions to deliver solutions.

As a Senior Software Engineer for Applied AI, you'll develop AI security capabilities, integrate AI models, and improve security workflows within HackerOne's platform while collaborating across teams.

As a Senior Software Engineer, you will develop features for AI security capabilities, enhance workflows, and integrate systems while collaborating across teams.

The Software Test Engineer will develop automated test frameworks, analyze software designs for test planning, and enhance CI/CD processes within an Agile scrum team.

As a Senior Software Engineer, you will develop secure, scalable medical imaging platforms, architect distributed systems, and work with AI diagnostic tools.

Looking for a Senior Software QA Engineer with 6+ years of QA experience in enterprise software, strong problem-solving skills, and expertise in Linux/Unix configuration and scripting.