Founding Software Engineer (£100k-£140k + Equity) at Well-funded AI voice agent startup

This is a job that Jill is helping to recruit for on behalf of one of our customers. To apply, speak to Jack. Title Founding Software Engineer (£100k-£140k + Equity) at Well-funded AI voice agent startup Job Title Founding Software Engineer Salary £100k-£140k + Equity Company Description Well-funded AI voice agent startup Job Description Join a well-funded AI voice agent startup as a Founding Software Engineer. You will build and ship core product features, shaping the future of AI voice technology. This role involves working across the full stack, solving complex challenges, and directly impacting customer success. Ideal for those passionate about 0-to-1 building and cutting-edge AI. Location London, UK Why this role is remarkable * Shape the future of AI voice technology from the ground up. * Backed by top-tier VCs, strong customer traction in a growing market. * Significant equity opportunity in a fast-paced, high-impact environment. What You Will Do * Build and ship core AI voice agent product features across the full stack. * Own the product lifecycle from customer needs to solution delivery and iteration. * Apply best practices in testing, documentation, and reliability to raise the bar. The ideal candidate * Strong fundamentals and 5+ years production experience with React, TypeScript, Python. * Proven track record building and shipping AI products end-to-end. * Customer-obsessed, biased for action, with an owner's mindset for 0-to-1 building. How To Apply To apply for this job speak to Jack, our AI recruiter. Step 1. Visit our website. Step 2. Click 'Speak with Jack'. Step 3. Login with your LinkedIn profile. Step 4. Talk to Jack for 20 minutes so he can understand your experience and ambitions. Step 5. If the hiring manager would like to meet you, Jack will make the introduction.