Full-Stack Software Development Lead

About SiPhox HealthSiPhox Health is building the leading home testing platform for biomarkers across inflammation, hormones, and metabolic and cardiovascular health. Six in ten Americans live with a chronic disease, and our mission is to make early detection possible from home.We Operate Two Business Lines, Both Scaling QuicklyMail-in blood testing: Growing more than 50% quarter over quarter, and the most comprehensive and highly rated at-home blood testing available today.At-home blood testing device: Planned launch in 2027–28. Our chip-based module combines biochemistry with integrated photonics, electronics, and microfluidics, protected by more than 50 patents.SiPhox is an MIT startup backed by Tier I investors including Y Combinator, Khosla Ventures, and Intel Capital.Position SummaryWe're looking for a hands-on engineering lead who has strong AI-enabled development experience, run an AI-enabled software development lifecycle, and led a small team to ship distributed systems in production. You've operated across the stack, owned services from architecture through deployment, and know how to move fast without breaking the discipline that keeps complex systems reliable. This is a player-coach role: you will remain hands-on in the codebase while leading the team and owning how the team builds software.What You Will DoLead an AI-enabled development process: Own and continuously improve how the team builds software with AI coding tools and agents integrated across the lifecycle — from spec to review to deploy. Set the standards and workflows that enable a small team to deliver well beyond its size.Design the development process: Define and evolve our SDLC — version control, code review, CI/CD, automated testing, and observability — so the team ships quickly and reliably.Lead and grow a small team: Manage, mentor, and set technical direction for a small team of engineers. Balance hands-on coding with unblocking others, reviewing work, and raising the team's standards.