Founding Engineer

Velocity Tech; Greater London; On-site; GBP 70,000 - 120,000; Full time

Job summary

Velocity Tech has partnered with an early-stage AI startup redefining how companies generate, manage, and grow revenue. They are hiring a Founding Engineer to join at a pivotal stage and help shape both product and technical direction.

As a Founding Engineer, you\'ll work across the entire product stack, building features from concept through production, and collaborate directly with customers. This highly autonomous role offers ownership and high impact from day one.

Qualifications

• Experience as Founding Engineer or senior full-stack in startups or scale-ups.
• Strong commercial software engineering experience with modern web technologies.
• Product-first mindset with ability to work directly with customers and iterate quickly.

Responsibilities

• Build and deliver end-to-end product features across frontend, backend, and infrastructure.
• Work closely with customers to understand problems and rapidly turn feedback into product improvements.
• Design and develop modern AI-powered applications and intelligent workflows.

Skills

TypeScript

Product-first mindset

Customer-facing

Autonomy

Problem solving

Tools

Next.js

Supabase

Vercel

Tailwind CSS

shadcn/ui

Codex

PostHog

Sentry

Job description

Velocity Tech has partnered with an early-stage AI startup that is redefining how companies generate, manage, and grow revenue.

Having recently secured a successful pre-seed funding round from leading venture capital firms, they are now looking to hire a Founding Engineer to join the business at a pivotal stage of growth. This is a rare opportunity to become one of the first engineering hires, helping shape both the product and technical direction of the company while working alongside an experienced founding team.

The Opportunity

As a Founding Engineer, you\'ll work across the entire product stack, building and shipping features from concept through to production. This is a highly autonomous role where you\'ll work directly with customers, influence product decisions, and own technical solutions from end to end.

Key Responsibilities

• Build and deliver end-to-end product features across frontend, backend, and infrastructure.
• Work closely with customers to understand problems and rapidly turn feedback into product improvements.
• Design and develop modern AI-powered applications and intelligent workflows.
• Help shape the technical architecture and engineering best practices as one of the company\'s earliest hires.
• Work across APIs, databases, cloud infrastructure, and third-party integrations.
• Contribute to product strategy alongside the founding team.
• Take ownership of technical decisions while maintaining a strong focus on product quality and user experience.
• Continuously experiment with emerging AI technologies and engineering practices.

What They\'re Looking For

• Previous experience as a Full Stack, Product, or Founding Engineer within startup or scale-up environments.
• Strong commercial software engineering experience with modern web technologies.
• A product-first mindset with the ability to work directly with customers and iterate quickly.
• Experience building AI-enabled applications or a strong understanding of modern LLM-based systems.
• Comfortable working across the full software development lifecycle, from architecture through to deployment.
• Strong problem-solving skills with the ability to work independently and take ownership.
• Passion for building products from the ground up in a fast-moving environment.
• TypeScript
• Next.js
• Supabase
• Vercel
• Tailwind CSS
• shadcn/ui
• AI/LLMs
• Codex
• PostHog
• Sentry
• Braintrust

Why Join?

• Join at the earliest stage of an ambitious AI company with significant influence over both product and engineering.
• Work alongside experienced founders with a strong track record of building successful technology businesses.
• Shape technical decisions, architecture, and engineering culture from day one.
• Build AI-first products that solve real commercial challenges.
• Enjoy high levels of ownership, autonomy, and exposure across the entire business.
• Be part of a collaborative, fast-moving team where your work has a direct impact on customers and company growth.