Founding Engineer

CodeWall is building the future of cyber security and on a mission to create the world's best AI super hackers. We are VC-backed by some of the best and just closed our $4M pre-seed round, the largest ever for a cyber startup in the UK. Read our manifesto for why we built it, and our research for what it's already found 👉 https://codewall.ai. Come hack the planet with us!

About the role

The first senior engineering hire. You'll own how we build — the architecture, the conventions, the bar for what we ship. You wear many hats: you build products, design systems, and fine tune models. You might tackle moonshots or polish a feature. You do what it takes to fulfill our mission. This is a soft-offered role with meaningful equity for the right person.

What you'll do

• Set the engineering bar — architecture, code review, what "good" looks like.
• Own critical platform paths end-to-end: from intake through agent execution to reporting.
• Build and operate the infrastructure the agents run on (multi-target, multi-tenant, scaling).
• Pair with research and AI to translate offensive patterns into shipped code.
• Hire the next five engineers — write the JDs, run the loops, set the rubric.
• Carry the on-call when prod breaks (which it will).

What we're looking for

• 6+ years building production systems that other engineers depend on.
• Strong opinions on architecture, weakly held — you've watched your own designs rot in prod.
• Comfort across the stack: backend services, frontend, infrastructure, async / agent orchestration.
• A history of shipping fast in early-stage environments where the requirements moved daily (0-1).
• Python preferred (our core)
• Comfortable owning hiring — you've built or led a team before.

Bonus

• Security or offensive-tooling background.
• Built agent / LLM-orchestration systems in production.
• Open-source projects of substance.

Logistics

• Location: London, Hybrid with 3/4 days a week in the office.
• Interview process: 40-min intro chat with the founder → 10 minute chat with advisor → in person coffee and offer with the founder
• Compensation: Competitive, plus meaningful early-hire equity. Specifics in the first call.

If parts of this don't fit but you think you'd be dangerous here anyway — apply and tell us why.