Part-Time Full-Stack Engineer — Angular/Firebase SaaS (with growth path)

We're building a video-based sales training platform used by mid-market and enterprise companies. The platform includes on-demand video, live sessions, and a timestamped annotation system. The core platform is built and in active use — we're looking for someone to own ongoing feature development, improvements, and maintenance. We're looking for a part-time engineer (2–10 hrs/week to start) who is comfortable working independently in a lean startup environment. Hours will grow with revenue — realistically to 20 hrs/week near-term, with a path to full-time for the right person. Stack: Angular (RxJS), Firebase (Firestore, Functions, Hosting, Storage), Mux, Daily.co Experience building for mid-market or enterprise customers is a plus. Familiarity with AI-assisted development (Claude Code or similar) is preferred. To apply, please share relevant work samples or clients.