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Founding Engineer

Delfavia Jack & Jill· London, England, United KingdomSponsorshipLicensed sponsor
Posted 22 Sept 2026 · Added 22 Sept 2026, 09:01
DelfaSoftware developmentfounded 2025
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Job Title

Founding Engineer

Company Description

$3.8M Seed-funded AI startup backed by Air Street Capital automating clinical trial recruitment

Job Description

You will build and scale the core systems powering autonomous AI agents that accelerate life-saving medical treatments. Working in a high-talent density team, you will own complex technical projects from architecture to deployment, orchestrating intelligent workflows across trial sites and handling voice interactions to solve the multi-billion dollar clinical trial bottleneck.

Location

London, UK

Why this role is remarkable

Join an elite technical team including foundation model researchers, world-class causal AI experts, and engineers from top-tier biotech firms like Exscientia.

Extraordinary traction with seven-figure ARR, 25% month-on-month growth, and deployment across 300+ clinical trials in less than one year.

High-autonomy 0→1 environment where your engineering decisions directly impact how quickly patients receive life-saving treatments for everyday diseases.

What You Will Do

Architect and scale core systems for AI agents, including intelligent workflow orchestration and real-time voice interaction infrastructure.

Take full end-to-end ownership of critical product features, from initial design and system architecture to production deployment.

Collaborate onsite in London with a multidisciplinary team of MDs and AI researchers to solve complex engineering challenges in the healthcare space.

The ideal candidate

2+ years of full-stack engineering experience with a track record of building high-quality products at high velocity.

Strong builder instincts and an ownership mindset, demonstrated through professional work, side projects, or open-source contributions.

Proficiency in modern tech stacks, ideally including FastAPI, TypeScript, React, PostgreSQL, and experience with workflow engines like Temporal.