Senior Software Engineer

Senior Software Engineer / Staff Software Engineer – Python & AI

Hybrid – London (flexible remote) | £100–£130k + meaningful equity

You’ve built brilliant products. Now you want your work to really matter.

You want to join something early enough that your code, your ideas and your problem-solving directly shape the product and the growth of the business.

This is the role for you.

You’ll join a small, proven startup that’s already generating revenue and now moving fast. The product is live and being used today - and the next stage is scaling it into a market-defining platform, powered by agentic AI.

AI isn’t a bolt-on here. It is the product.

This role is for someone who wants to stay hands-on. Someone who gets satisfaction from writing great code, solving hard problems, and seeing their work go straight into production and into customers’ hands.

What You’ll Do

• Build and scale production-grade systems that automate real-world workflows using agentic AI.
• Work across Python, FastAPI, PostgreSQL and AWS to ship impactful features quickly.
• Experiment, iterate and push new AI capabilities into the product — weekly, not quarterly.
• Collaborate closely with the founders to shape product direction.
• Set a high bar for code quality, reliability and delivery pace.
• Be a core part of the early engineering team — someone the founders trust to own meaningful pieces of the platform.

What You’ll Bring

• Proven experience shipping AI-driven systems into production — whether that’s agentic workflows, orchestration, retrieval, fine-tuning, or similar.
• Strong Python fundamentals (FastAPI preferred).
• Solid experience with AWS (Lambda, RDS, S3, Bedrock or similar).
• Comfort working in fast-moving environments where ownership and initiative matter.
• A practical mindset: you’re motivated by solving real problems, not theory.

Nice to have

• LangChain or similar frameworks.
• Experience in workflow automation, data-centric systems or payments.
• Exposure to 0→1 or early-stage startup environments.

Interested in learning more? Click apply or get in touch here [email protected]