Founding Full Stack Engineer (Python/TypeScript) – London - £180K plus equity
Halian is currently working with a stealth-stage AI startup is hiring its first technical team member.
If you want to build core AI systems from the ground up and move faster than a typical tech organisation ever allows, this might be for you.
What you'll be doing
• Architect core infrastructure and data pipelines
• Build integrations with external APIs and providers
• Develop internal tooling and contribute directly to product roadmap decisions
• Work across backend, frontend, data, and cloud systems
• Solve high-impact problems (including the ones we haven't discovered yet)
Tech you'll work with
• Python + (in equal measure)
• API integrations, ETL, schema validation
• React/TypeScript, Supabase, AWS
• Data quality systems and pipeline tooling
• Whatever the mission requires — we optimise for impact, not rigidity
What matters most
Ownership:
You think like a founder. You ship fast, iterate quickly, and take full responsibility for your domain.
Scrappiness:
It's a startup — backend, frontend, DevOps, customer conversations… you jump in wherever needed.
Energy:
High-energy, positive mindset, and excitement about building infrastructure for AI.
Flexibility:
Comfortable with a constantly evolving stack and shifting priorities.
Experience: 3–5 years as a software engineer in high-growth startups.
You'll fit in well if you
Have high urgency:
You don't wait for instructions — you identify problems, create solutions, and drive execution.
• Have a strong track record: Excellence shown academically, professionally, athletically, artistically, or elsewhere. You hold yourself and your team to a high bar.
What they offer
• Founding team status + meaningful equity
• Opportunity to build major components of the product from scratch
• Ambitious, high-performance culture — we build to win
• Competitive compensation
If you meet the above criteria and would like to be considered for this role then please click apply now.
