Principal Engineer

Oliver Bernard • london, london, United-Kingdom • Posted June 11, 2026

Location london, london

Job Type Full-time

Category Other-General

Posted June 11, 2026

 Principal Engineer - Series A Scale Up - Up to £270,000   
 I'm currently looking for a  Principal Engineer   to join a high-growth, YC-backed AI startup based in London.  
 It's a hands-on IC role focused primarily on  scalable backend systems and genuinely at scale.   
 You'll be working directly with the  Head of Engineering and CTO/Co-Founder   — your impact will be visible and felt from day one. They're looking for someone who has taken companies from  Series A through to Series C on multiple occasions   ; someone who has walked into complex, high-pressure environments, diagnosed the problems, fixed them, and unlocked the next phase of growth. This is about  scaling products, not just teams.   
 Tech Stack:   Python · FastAPI · React · TypeScript · GCP  
 Salary:  £190,000 - £270,000 + Equity  
 Working Arrangements:   3 days per week in Central London office  
 Why it m...
            

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