Founding Engineer AI Startup

London (In-Office) £110k - £150k + Founding Equity

Most AI companies are currently building "chatbots." This team is building an autonomous orchestration layer for a high-stakes, physical industry. They aren't just processing text; they are managing bidirectional, real-time data streams where latency and reliability are the only metrics that matter.

With £35M in funding to date, they are past the experimental phase and are now building the "production engine." They are looking for a Founding Engineer to join an elite pod of four, all of whom have previously been CTOs or lead engineers at top-tier scale-ups and labs.

We need a builder who is obsessed with reliability and integration. You ll be responsible for making sure the AI doesn't just "talk," but actually executes tasks across a complex ecosystem:

• Strong Python or TypeScript/Node.js for building robust, scalable backend services and API integrations.

• A track record of gluing complex systems together, handling the authentication, rate-limiting, and data-mapping required to connect AI to legacy CRMs and ERPs.

• Experience with frameworks like LangChain, LangGraph, or building custom state-machines to manage long-running, multi-step AI tasks.

• A Full-Stack mindset. You care as much about the reliability of the webhook as you do about the temperature of the LLM.

• Experience with PostgreSQL, Redis, and modern cloud infrastructure (AWS/GCP/Vercel) to ensure the system never drops a lead.

Desirable Background & Experience

• You ve likely been a Founding Engineer or Senior Dev at a high-growth SaaS company. You know how to ship reliable code without a manual.

• You don t wait for a spec. You look at a customer's broken workflow and build the integration that fixes it.

• You know when to use an off-the-shelf tool to ship by Friday and when a custom build is required for long-term stability.

The Package

This is a founding-tier role with a package designed to attract the best talent in London:

• £110,000 £150,000 (dependent on experience).

• Significant founding-level equity. They want owners, not employees.

• A high-spec workspace in Central London.

• Whatever hardware and software you need to stay at the cutting edge.

The Environment

This is a foundry of elite builders. There are no managers here, only specialists who want to solve a massive, global problem. The team is in-office in London, believing that the hardest real-time problems are solved faster when you re standing at the same whiteboard.

If you re ready to move away from wrappers and start building a proprietary engine, please get in touch.