Founding Software Engineer — AI Voice
💡 What if your next role let you build a real-world AI workforce — where voice agents handle thousands of customer interactions and automate entire industries?
🚀 Our client — a YC-backed AI startup (Series A) — is hiring a Founding Software Engineer (London, onsite).
They’re building autonomous AI voice agents for trades and field service businesses, combining LLMs, speech-to-text, and real-time systems to power a new category of “digital workers.”
The role:
✅ Build and ship core product features across Python, TypeScript, cloud infrastructure, and event-driven systems
✅ Own the full product lifecycle — from customer discovery to shipped solutions
✅ Work directly with customers to solve real operational problems
✅ Move fast on MVPs while building scalable, production-grade systems
✅ Raise the bar across testing, reliability, and system design
✅ Shape product direction through direct user feedback and iteration
Why join?
🌎 Join a YC-backed, Series A startup building category-defining AI products
💰 £150,000 – £200,000 + equity
🛂 Visa sponsorship available
⚙️ Work on cutting-edge AI across voice, LLMs, and real-time automation
🤝 High-ownership, low-ego team of ~10 people
🚀 Massive impact — shaping product, culture, and engineering from day one
📩 Interested? Apply now!