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Founding Engineer

London, UK
£80,000–£150,000 per year plus equity
Permanent
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Our startup client is looking for a Founding Engineer. You’ll join at the earliest stage to help shape and build AI-powered products from the ground up. This is a hands-on role for someone who thrives in fast-moving environments, loves experimenting with new tools, and can turn ideas into working prototypes quickly.

Requirements:

  • Computer Science degree with extensive side projects and several years of hands-on experience building with AI tools.

  • Proven track record of building and shipping AI-powered applications at speed, with a bias toward rapid iteration over perfectionism.

  • Full-stack development skills across modern frameworks — Next.js, TypeScript, Python, PostgreSQL, and cloud infrastructure.

  • Direct experience with LLM APIs (OpenAI, Anthropic, or open-source models) and structured data API integration.

  • A Founding Engineer mentality — comfortable owning the entire development lifecycle from idea to live product.

  • Previous experience at AI-native startups and comfort working in experimental, fast-paced environments.

  • Ability to demo weekly progress, gather feedback, and iterate rapidly on working prototypes.

  • Naturally AI-first in approach — automating every workflow where possible.

  • Thrives in environments where ideas move from concept to product in days, not months, measuring progress through working software rather than lengthy plans.

Preferred:

  • Experience working directly with business stakeholders to translate complex workflows into automated solutions.

  • Background in fintech, investment, or private markets (a plus, but not essential).

If you’re excited about building innovative AI products in a high-impact environment, apply today.

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