Job Specifications
Lead Founding Engineer / Staff Software Engineer - Python & AI
Hybrid - London (flexible remote) | PS100-PS150k + meaningful equity
You've built brilliant products. Now it's time to help build a company.
You're not interested in just another engineering job. You want to take something from the early stages, shape it technically and culturally, and see your work turn into real growth - both for the business and for you.
This is that moment.
You'll join a small, proven startup that's already generating revenue and ready to scale fast.The product's live, customers are paying, and the next step is turning it into a market-defining platform - powered by agentic AI. AI will be at the core of this business, creating systems that make decisions, automate workflows, and remove the bottlenecks that slow humans down.
You'll be the technical driver of that journey.
Every decision you make will shape what the company becomes.
Every release will push the product (and your career) forward.
And when this business exits, you'll know your contribution helped make it happen.
What You'll Do
Design, build, and scale a production-grade AI platform that automates complex, real-world workflows.
Architect and deploy agentic systems that reason, act and learn, not just call APIs.
Lead and grow a small, senior engineering team across the UK and Europe.
Stay hands-on: write code, review PRs, ship weekly.
Work directly with the founders to set product direction and technical vision.
Define the engineering standards and architecture that support scale.
What You'll Bring
Proven experience building agentic or autonomous AI systems - LLM orchestration, fine-tuning, retrieval, embeddings, or similar.
Strong experience with Python, FastAPI, PostgreSQL.
Solid AWS knowledge - Lambda, RDS, Bedrock, S3.
Experience leading or mentoring small, high-performing teams.
Startup mentality: you move fast, make decisions, and take ownership.
A deep, practical understanding of how to deliver AI into production.
Nice to have:
LangChain, Bedrock or other open-source agent frameworks.
Background in payments, workflow automation or data-heavy systems.
Experience scaling something from 0-1.
It's also probably important to say that there is a clear growth path into Head of Engineering or CTO as the business scales.
If you're ready to take everything you've learned and apply it where it truly counts - in a startup using agentic AI to reshape how an entire industry operates - this is your chance.
Click apply or get in touch.
adam@106rec.co.uk
About the Company
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