Founding Software Engineer (AI Infrastructure)

TL;DR

Founding Software Engineer (AI Infrastructure): Build core AI systems powering next-generation real-world innovation with an accent on LLMs, multimodal models, and infrastructure scaling. Focus on shipping production-grade code, solving complex technical challenges, and owning full-stack feature development in a fast-paced startup environment.

Location: On-site in London with visa sponsorship and relocation covered

Salary: £100,000–£180,000 + Equity

Company

Early-stage AI infrastructure startup focused on removing major bottlenecks in physical world innovation.

What you will do

• Ship production-grade code from day one and own full-stack feature development across infrastructure, tooling, and application layers
• Solve hard technical and operational problems including scaling infrastructure and fine-tuning AI models
• Engage in customer calls and contribute to hiring and team building
• Write specifications, take initiative, and navigate ambiguity with minimal guidance

Requirements

• Location: Must be able to work on-site in London
• Visa sponsorship and relocation support provided
• 2+ years experience building and deploying real products
• Deep understanding of LLMs, multimodal models, agents, and tooling such as LangChain, RAG, SFT/RL fine-tuning
• Strong knowledge of cloud infrastructure, containerization, and databases (relational and graph)
• Proven ability to build quickly and independently to a high standard

Nice to have

• Previous experience as a founder or early team member at a startup

Culture & Benefits

• High-trust, in-person collaboration in a tight-knit team
• All tools, meals, and support needed to move fast and focus on impactful work