Location
London
Employment Type
Full time
Location Type
On-site
Department
Engineering
About Delfa
Billions of people still suffer from every-day diseases.
One key reason? Clinical trials are broken.
Despite $120 billion spent each year, most trials are delayed due to bottlenecks like patient recruitment.
Delfa is fixing this with autonomous AI agents. We’re building AI agents to automate clinical trials, starting with patient recruitment.
Just three months in and already we’re:
* Live on 30+ trials across multiple conditions
* Mid-six-figure revenue and rising
* 300 % MoM product growth
* Oversubscribed $3.8 m seed from tier-one AI investors
We’re moving fast, and our biggest constraint is technical capacity. That’s where you come in.
What You’ll Do
You’ll build and scale the core systems that enable Delfa’s AI agents to deliver real-world clinical impact. Below are some concrete projects you might tackle:
* Designing automated monitoring systems to ensure quality of tens of thousands of voice AI calls.
* Building browser agents to automate data extraction from legacy systems.
* Laying the foundations of our data infrastructure through the creation of robust pipelines for ingesting, transforming, and serving high-quality healthcare data.
* Creating internal AI tooling to empower your teammates to self-serve and ship fast.
Our current tech stack:
FastAPI · Pydantic · React · OpenAI / Gemini / Claude · Temporal · Honeycomb · Render · Azure
You’ll Be A Great Fit If…
* You have 3+ years of professional full-stack engineering experience: We’re looking for somebody comfortable with solving hard technical problems, refactoring when needed, and knowing what’s enough and what’s too much to solve a problem.
* A track record of building high-quality products fast: Delfa’s got big ambitions to materially accelerate getting life‑saving treatments to market. This is necessary and urgent work so we need individuals who can deliver.
* An ownership mindset: We position our team to understand customer problems, give you the autonomy to find the best path forward, and expect you to own the solutions.
* A growth mindset: We’re looking for people who take pride in their work and are always looking to improve it. If your work doesn’t matter to you, it won’t end up mattering to our customers. If you’re not growing, your impact won’t grow either.
Life at Delfa
We’re at the beginning of our journey so you’ll have an opportunity to shape not just our product, but the company itself: who we work with, and how we work together.
You’ll join a talent dense team, working onsite at our London office 5 days a week:
* A wine‑snob who built Roche’s first foundation models
* A debate champion who scaled a product from nothing to millions of diagnostic tests
* A medical doctor who builds voice agents from her rural clinic
* A ginger bloke who deployed production AI for J & J, Medtronic, and Exscientia
What We Offer
* £100k-120k base salary + meaningful equity
* Private health insurance, Function Health subscription, gym membership
* 25 days’ holiday + UK public holidays
* Modern office space 5 mins from Old Street station
* True 0-1 ownership. You’ll take full responsibility for critical product features that get new treatments to patients, faster.
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