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.

In less than a year from launch we’ve already:

• Deployed onto 300+ trials across multiple conditions

• Reached seven figures in ARR, growing 25% MoM

• Raised an oversubscribed $3.8m seed from tier-one AI investors

Overview

Delfa is at a critical inflection: we have a proven offering which is on track to support the recruitment of thousands of participants into trials in 2026, while simultaneously expanding our offerings with new products for biopharmaceutical companies.

You'll work directly with our CEO across the whole business. You will sit at the intersection of AI agent design, quality assurance, and customer delivery.

You'll use AI tools extensively, but your judgment, attention to detail, and ability to spot issues will be what makes the work exceptional.

What You'll Do

• Design and deliver AI agents for our customers

• Support pre-release testing of agents before they go live with patients

• Sample real calls and patient interactions to identify issues, test fixes, and add recurring items to the monitoring list to inform future automated QA

• Work closely with product, engineering, and our medical team to ensure agents are safe, accurate, and operationally useful

• Build and document the operational playbooks that let us scale

• Run discrete strategic projects across the business where an extra pair of capable hands moves the needle

The mix will shift over time. The bottleneck today won't be the bottleneck in six months, so you'll be someone who can pick up whatever matters most and run with it.

You'll Be A Great Fit If...

You're a driven generalist, early in your career. You're probably a couple of years into a top consultancy, startup, or other high-performing environment, and you're looking to get your hands dirty building from the ground up.

You get things done. You're hungry, bought into the mission, and biased toward action. When you notice something broken, you fix it.

You're coachable. You take feedback well, adapt quickly, and improve the process as you go. You can move fast without being careless.

You have real attention to detail. You're comfortable reviewing dense clinical or operational documents and can spot when something is missing, unclear, or inconsistent.

You care about quality. Our agents interact with real patients and support real clinical trials, so accuracy matters. You take pride in work that is careful, clear, and reliable.

You're comfortable using AI tools. You don't need to be an engineer, but you should be excited to use prompts, structured workflows, and internal tools to produce high-quality work faster.

You communicate clearly. You can explain complex clinical or operational logic in simple, structured language that customers, internal teams, and AI agents can all understand.

Life at Delfa

Delfa is building a generational company to transform the way medications reach millions of patients in need.

This is your opportunity to get in on the ground floor and work alongside the highest talent density team in the space, onsite at our London office 5 days a week:

• A wine-snob who built foundation models at Roche at ETH Zurich

• A former hedge fund trader with world class causal AI knowledge

• A medical doctor turned AI engineer who builds prototypes on the weekend for fun

• A ginger bloke who deployed production AI for J&J, Medtronic, and Exscientia

What We Offer

• Competitive salary + meaningful equity

• Private health insurance and 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 the growth of our offering to get new treatments to patients, faster.

Our Hiring Process

We work to get you an offer within two weeks.

1. Intro chat with Tom (CEO) - 30 mins: A discussion about your experiences, values, and career goals, and give you an opportunity to get a sense of the role and the team. After this call we may ask you to share some work you’re proud of.

2. Case study - 90 mins: You will work together with our CEO on a case study designed to understand your ways of working and how you approach problem solving.

3. Challenge - 90 mins: We’ll invite you to our office to spend some time with us. We’ll give you a real life task and ask you to work through it with us. It will be the best opportunity for you to truly see if this is the right role for you and also for us to get a great idea of how you would collaborate.

4. Offer