Founding AI Engineer — Build Local Community Platform

Jack & Jill/External ATS; Greater London; On-site; GBP 75,000 - 90,000; Full time

Job summary

A VC-backed social AI startup in London is seeking a Senior Founding Engineer to lead the development of AI infrastructure aimed at fostering community connections. As the first engineering hire, you will work closely with an experienced founding team, overseeing the architecture of complex systems using modern technologies. The ideal candidate will have experience with LLMs and a proven track record in a startup environment, coupled with an entrepreneurial mindset. Competitive salary with substantial equity is offered.

Benefits

Equity

Influence over technical culture

Qualifications

• Professional experience with LLMs, LangChain, and modern TypeScript environments.
• Proven track record of building and scaling complex systems.
• Ability to navigate ambiguity and ship high-quality code rapidly.

Responsibilities

• Design and implement the core architecture for AI agents.
• Own the end-to-end development of the platform.
• Scale infrastructure to support millions of users.

Skills

Experience with LLMs

LangChain

Next.js

Node.js

Entrepreneurial mindset

Job description

A VC-backed social AI startup in London is seeking a Senior Founding Engineer to lead the development of AI infrastructure aimed at fostering community connections. As the first engineering hire, you will work closely with an experienced founding team, overseeing the architecture of complex systems using modern technologies. The ideal candidate will have experience with LLMs and a proven track record in a startup environment, coupled with an entrepreneurial mindset. Competitive salary with substantial equity is offered.