2,918 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Lead Software Engineer
Lead Software Engineer at a fast-growing startup building an all-in-one restaurant management platform (Android tablet POS). Day to day: architect scalable Java microservices on AWS, mentor a team of 3-5 engineers, and ship projects like customer kiosks, offline payment handling, and discount rules.
Staff Software Engineer
Staff Software Engineer at a fast-growing startup building an all-in-one restaurant management platform on Android tablets. You'll own the mission-critical Core Orders and Pricing systems in Java, working on scalability, modular pricing/taxation modules, APIs, performance tuning, and mentoring teammates in Boston.
Software Engineer
Software engineer at an AI-powered hiring/recruiting platform startup in Boston, working on a core team that designs cloud-native Java microservices on AWS, writes unit/integration tests, and owns features from design through production.
Senior/Principal Software Engineer
Early-stage Boston startup building a platform that measures software development efforts is hiring a Senior/Principal Software Engineer to integrate new data sources, build data visualizations, and work directly with customers. Core stack is Python 3/Django/Postgres on AWS; on-site in Boston.
Senior Software Engineer
Senior backend engineer at a healthcare staffing tech startup in Quincy, MA, building Java-based microservices on AWS. Day to day: shipping tested, maintainable features, improving logging/alerting and system reliability, code reviews, deploys, and occasional on-call for critical production issues.
Lead Software Engineer
Lead Software Engineer at a Boston startup building a marketing platform for ecommerce brands. You'd own a core area — frontend product experience, 3rd-party integrations, or analytics/segmentation — spending most of your time coding in Python on AWS while mentoring engineers and shaping technical architecture.
Senior Software Engineer
Senior Software Engineer on the web development team of a dog DNA testing company, delivering features across the full web stack from UI to backend while mentoring other engineers and improving development practices. Core stack includes server-side rendered Express/Node.js apps in JavaScript/TypeScript, Vue.js, PostgreSQL, AWS, and CircleCI.
Principal Software Engineer
A Principal Software Engineer at a FinTech startup architects and builds SaaS risk-assessment tools using Go, Python, React, and TypeScript. Day to day they lead and mentor the engineering team, shape technical strategy with executives, and ensure systems are scalable and regulatorily compliant.
Staff Software Engineer, Model Infrastructure
Staff engineer on Harvey's Model Infrastructure team, designing and building the platform that powers every AI request — intelligent model routing across providers like OpenAI and Anthropic, failover, capacity management, observability, and cost analytics. Core work is large-scale distributed systems in Go, Java, Python, Rust, or C++.
3D/AR/VR Software Engineer
Field AI is hiring a 3D/AR/VR Software Engineer in Boston to build and maintain AR/VR applications for supervising, manipulating, and controlling humanoid robots. Day-to-day work spans 3D UI design, prototyping, user studies, and integrating headsets with robot perception, planning, and control systems using C#/C++ and engines like Unity or Unreal.
Senior Software Engineer, Robot Data Infrastructure
Builds and maintains infrastructure for capturing, processing, and versioning multimodal robotics data (video, sensors, telemetry) to ensure reproducibility and traceability for AI training/evaluation.
Senior Software Engineer
Senior Software Engineer at Valon building the AI-native mortgage servicing platform (ValonOS), designing scalable infrastructure that handles complex federal and state regulations. Core stack: Python, React, Docker, Kubernetes, and Google Cloud Platform; roles open in New York, San Francisco, or remote.
Software Engineer: Factory Team
Backend engineer on Rogo's Internal Automation team who builds internal services, data integrations, and unattended AI agents that automate workflows like routing, approvals, provisioning, and customer onboarding. Core stack: TypeScript backend services, GCP, SQL, and production LLM/agent tooling.
Software Engineer I
AiPrise, a YC-backed compliance orchestration platform for fintechs, is hiring a Software Engineer I in San Jose to own features end-to-end across its platform: REST APIs, microservices, vendor integrations, data pipelines, and case management UI, using modern backend languages (Python, Go, Java, Node.js) with PostgreSQL, Docker, and CI/CD.