Job Description

Founding Engineer | AI Agents | £100–150k + Equity | London

We're recruiting a Founding Engineer for an ambitious, well-funded AI startup building intelligent automation for complex enterprise workflows. Based in London, this is an opportunity to join a small engineering team at an early stage, working directly with major enterprise customers while helping shape the core technology behind a rapidly growing product.

The business is already working with significant enterprise customers and has strong demand for its technology. They're looking for an engineer who enjoys solving real problems, understanding how customers work and building software that delivers measurable results. Rather than simply working through tickets, you'll have ownership over what gets built, how it's delivered and how the product evolves.

We're interested in engineers who can demonstrate:

• At least two years' commercial full-stack software engineering experience, ideally using languages such as Python, Go, TypeScript, JavaScript or Rust.

• Strong experience building across backend systems, cloud infrastructure, APIs, databases and modern frontend applications. Technologies might include AWS, GCP, Azure, React, PostgreSQL, NoSQL, FastAPI and CI/CD.

• Experience taking products or substantial features from initial concept through to production.

• Confidence working directly with customers, understanding their requirements and translating business problems into technical solutions. Experience in forward-deployed engineering, customer-facing development or enterprise deployments would be particularly relevant.

• Experience or a strong interest in AI agents, LLMs, tool integrations and automation, potentially using technologies such as LangChain, LangGraph, PydanticAI, Claude, OpenAI or Gemini.

• The ability to work independently, make architectural decisions and solve unfamiliar problems.

• Experience in startups, founding teams or other high-ownership engineering environments, ideally within early-stage, venture-backed or fast-growing technology businesses.

• Strong communication skills, commercial awareness and an interest in understanding how technology creates value for customers.

Bonus points if you have an entrepreneurial mindset and enjoy building personal projects, experimenting with emerging technologies or contributing to open-source software. We'd be particularly interested in seeing examples of things you've built independently.

You'll divide your time between working closely with enterprise customers to deploy AI-powered solutions and developing the core platform itself. That means building AI agents, data models, APIs and user interfaces, improving integrations and using what you learn from customers to influence the wider product roadmap.

You'll have the opportunity to take ownership of projects from initial customer conversations through to successful deployment, while helping establish the engineering foundations of a growing AI business.

This is a five-day onsite position in London, with visa sponsorship and relocation support available.

The company offers the opportunity to join at an early stage, work alongside ambitious engineers and take meaningful ownership of both engineering and customer outcomes.

If you're a high-achieving, hands-on engineer who enjoys building from scratch, working with customers and taking responsibility for the results, please apply. You can also reach out to Nathan Laidlaw at Transparent Technology for a confidential discussion.

Founding Engineer, Forward Deployed Engineer, Full Stack Engineer, Product Engineer, Applied AI Engineer, AI Agents, LLMs, MCP, LangGraph, LangChain, Python, Golang, TypeScript, JavaScript, Rust, React, PostgreSQL, FastAPI, AWS, GCP, Enterprise Software, Startup Engineering, London Technology Jobs.