Senior Python Engineer

Backend Engineer

Python - Conversational AI

London

We have partnered with a super exciting early-stage startup is reimagining how we learn languages. By creating immersive, voice-led digital worlds powered by real-time conversational AI and agentic LLMs.

Users step into dynamic narratives tailored to their personality, interests, and fluency level, actively learning by hearing and using the language in context.

The Role

You’ll work across the stack, shipping features that bring these experiences to life!

️ Full stack product work — real-time voice, AI, and UI, Backend Systems

Tech:Python (FastAPI), WebRTC, Modal, LLMs, AI

Small, fast-moving team with full ownership from day one

Based London (meeting once a month in Paris or London)

You’ll thrive if you:

⚙️Have 5+ years of experience with both Python

You are a Python expert, with deep experience in backend systems, building for AI applications

Enjoy building with LLMs, agentic workflows, and/or conversational voice AI

Are pragmatic, collaborative, and excited to solve hard problems quickly

You have experience working on 0-1 / startup projects

This is a rare chance to shape something genuinely new at the intersection of AI, UX, and human connection.

Drop me a message if you’d like to hear more!