Founding 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. Founding Product Engineer — own the product experience of an AI agent platform from first sketch to production code. On-site, San Francisco. A pre-seed startup in San Francisco is building the operating system for AI-native service companies — a workforce of AI agents that runs a service business's day-to-day operations end to end. The founder is a second-time founder with a prior exit, and the company has just closed its angel round with leading operator-angels from Europe and the US. You'd be one of the first three engineers, and the first hired — the founding product seat, deciding what gets built, how it looks and feels, and what "great" means for software businesses trust to run their operations. What You'll Do → Own the product experience end to end: what we build, how it works, how it looks and feels → Design and ship the interfaces through which businesses manage, trust and work alongside their AI agents → Ship end-to-end product for the first design partners, fast, and talk to customers directly → Set the product and design bar as the team grows What We're Looking For → 2-8 years of hands-on product or software engineering, with production products you built yourself → Outstanding design taste, with a portfolio, live products or side projects to show → Zero-to-one experience: founder, technical co-founder, or a founding or very early engineer or designer → Ships production code yourself (e.g. TypeScript / React) and uses AI agents heavily in your own work In person in San Francisco, 6 days a week — relocation supported, with the option to start in Vienna first. Competitive SF base plus meaningful founding equity, up to co-founder level for exceptional profiles. 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.