Founding engineer jobs in United Kingdom

Founding TypeScript Engineer required for early-stage and well funded Fintech Start-Up to help build the foundation of a new global platform. · BSc or MSc in Computer Science or relevant STEM subjects from Russell Group University · 2+ years of professional software engineering e ...

A high-growth, VC-backed HealthTech startup in central London is on the hunt for a high-calibre Founding Engineer to join their founding engineering team. · You'll work closely with the CTO and co-founders to help build a financial intelligence platform from the ground up, solvin ...

Founding Engineer required within a fast-scaling Cybersecurity start-up with an exceptional founding team. This is a hands-on role where you will work directly alongside the founding team to help shape the core technology and company culture. · 3+ years of Software Development ex ...

One of London's most exciting new AI ventures is searching for its first Founding Engineers. They are looking for someone ambitious, technically brilliant, and eager to help shape a company from day one.4+ years of experience in high-growth environments · Strong engineering funda ...

Founding Engineer – Well-Funded FinTech / Blockchain Start-Up. An exciting, well-backed start-up is looking for a Founding Engineer to join the team. As one of the first hires, you'll play a key role in shaping the product, culture, and direction of the company. · Strong academic ...

We are looking for a Founding Engineer who can ship at speed. You'll be developing AI-driven workflows that transform how investment teams source deals, analyze businesses, and make decisions. · Rapidly prototype and ship new AI tools and features. · Work directly with the foundi ...

One of London's most exciting new AI ventures is searching for its first Founding Engineers to join the core team. They are looking for someone ambitious, technically brilliant, and eager to help shape a company from day one. · 4+ years of experience in high-growth environments · ...

Founding TypeScript Engineer required for early-stage and well funded Fintech Start-Up to help build the foundation of a new global platform. · BSc or MSc in Computer Science or relevant STEM subjects from Russell Group University · 2+ years of professional software engineering e ...

Unique opportunity to help build a transformative new platform at the intersection of software systems, automation, and intelligent infrastructure. · Build and own core systems and architecture from the ground up · Work closely with the founding team on product direction and tech ...

Founding Engineer for a YC-backed startup building the next generation of AI-native analytics in London. High-trust environment. · Strong engineering background (ideally 5+ years) · Proven experience shipping production LLM systems · Hands-on experience with agentic/multi-step re ...

We are looking for a Founding Engineer to join an exciting fintech startup based in the UK. · Whether your ambition is to become a CTO in the future or you love building autonomously without leading teams, this role offers the freedom to create and innovate directly in code. · Ex ...

Founding engineer required for a well-funded, high-growth start-up in Manchester. The company is tackling a really interesting problem in the events and hospitality space using modern tech and AI. · Hands-on initially, with the opportunity to grow an in-house team and step into m ...

Join a founding team with a proven record of building successful start-ups, this is a chance to be part of something from the ground up. · ...

We're hiring a Founding Fullstack Software Engineer who's excited about blending solid product engineering with applied AI research. Design, build, and iterate on fullstack systems that power AI-driven automation. · Explore and evaluate new approaches in AI orchestration, prompt ...

Join one of London's most exciting security startups as a Founding Software Engineer and help shape the journey of redefining how enterprises protect their cloud environments. · Build from scratch and solve real customer challenges at scale. · Turn complex problems into elegant, ...

We're an early-stage, well-funded AI startup on a mission to change how humans and AI collaborate. Our platform leverages intelligent automation to remove repetitive, manual work — helping teams move faster and make smarter decisions. · Build, test, and ship core product features ...

Join a founding team with a proven record of building successful start-ups as Founding Software Engineer at an early-stage cybersecurity start-up redefining how organisations protect data and infrastructure. · ...

An exciting, well-backed start-up is looking for a Founding Engineer to join the team. As one of the first hires, you'll play a key role in shaping the product, culture, and direction of the company. · Strong academic foundation with a record of excellence. · Self-starter who tak ...

They are looking for a Senior Engineer to join them as one of their founding engineering members, who can step in and make a real impact. · Experience in early stage start ups, ideally as a founding engineer · Experience using AI/ LLMs/ Agentic AI · Strong engineering experience ...

This is an extremely rare opportunity to go through Y Combinator and experience the entire journey of building something big from day one. · ...