Top Tech Jobs & Startup Jobs in Boston, MA

Staff full‑stack engineer to own cross‑stack architecture and deliver high‑impact features quickly. Work on a React/React Native app and Node.js/TypeScript and Go backends, set technical direction, mentor a small squad, contribute to the open AT Protocol ecosystem, and integrate agentic AI tooling to boost team productivity.

As a Senior Backend Developer, you'll design and maintain high-volume pipelines and databases, implement ETLs for automated abuse-prevention, and develop monitoring solutions while collaborating with teams on safety systems.

As a Senior Machine Learning Engineer, you will design and maintain ML systems for content recommendations, search, and spam detection, while augmenting user experience and system performance.

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.

Build developer tooling, documentation, and web experiences for AT Protocol. Develop and operate backend API and identity services, maintain open-source SDKs, support auth and identity management, and ensure production hosting and developer-facing APIs work reliably for third-party builders.

Design, implement, and operate infrastructure for a federated social network. Own reliability, availability, observability, incident response, deployments, capacity planning, and cost management. Build automation and tooling, scale bare-metal and cloud systems for millions of users, lead incident reviews, mentor engineers, and manage vendor relationships to ensure operational excellence.

Lead and execute end-to-end product design for iOS, Android, and web while directing a small design team. Define visual identity and design systems, mentor and hire designers, run critiques, and influence product strategy using user research and iterative prototypes. Balance hands-on craft with team leadership to raise design quality across the product.

Lead Trust & Safety product efforts for AI-adjacent features: own product risk assessment, drive launch and operational readiness, translate safety needs into product requirements, build repeatable frameworks and tooling, partner cross-functionally to define mitigations and ownership, and establish a forward-looking roadmap for detection, escalation, and reporting systems to embed safety early in product development.