Senior Product Engineer

This is a role that TechTree is recruiting for on behalf of one of our clients. TechTree is an AI-driven recruitment platform working with high-growth companies. When you apply, our AI Agent matches you not just to this role, but to other relevant opportunities across our network, so one application can unlock multiple roles. Senior Product Engineer — Own the product surface of an AI assistant platform. San Francisco, on-site. We're building an AI assistant that does work for you, not just answers questions — connected to Gmail, Calendar, Slack, Linear, Notion and thousands of other tools, running in the cloud 24/7. We're a team of about 20 in the Presidio, San Francisco. This is a product role with a frontend center of gravity. You'll follow problems wherever they go: interaction design, client architecture, the API route, the DB migration, the analytics event that tells us whether it worked. What You'll Work On → Delegation primitives — handing off, tracking, interrupting and approving work that runs from seconds to overnight → Memory made visible — surfaces where users see and correct what the assistant has learned → Routines and apps — real software the assistant builds and users install and monitor → Performance as a feature — a local-first client that opens instantly on a 10,000-message history What We're Looking For → You've shipped complex web products and owned them after launch — multiplayer, large-data, streaming, or realtime UIs → You know React deeply — state management, re-renders, reusable components → You're comfortable owning a full-stack feature end to end: migration, route, fetch, UI, analytics → You're autonomous and low ego — you ship, get feedback, and iterate Base $180K–$240K + meaningful early-stage equity, plus health, dental, 401(k), generous PTO. What is TechTree? TechTree combines AI agents with a human support team to give candidates a better, more transparent hiring experience. Our AI Agent gets to know your background, experience, and what you're optimising for. It continuously matches you to live roles across our network where there's genuine alignment, not just keyword overlap. Our Human Team is there to support you through the process — answering questions, adding context, and making sure you're never left guessing or ghosted. We only post real jobs. Every role on TechTree is a live, active hire.