At a Glance
- Tasks: Build and scale AI systems to revolutionise clinical trials and improve patient outcomes.
- Company: Delfa, a pioneering tech company transforming healthcare with autonomous AI agents.
- Benefits: Competitive salary, equity, private health insurance, gym membership, and 25 days holiday.
- Other info: Work in a dynamic London office with top talent and true ownership of projects.
- Why this job: Join a mission-driven team making a real impact on life-saving treatments.
- Qualifications: 3+ years of full-stack engineering experience and a passion for solving complex problems.
The predicted salary is between 59400 - 72600 £ per year.
About Delfa
Billions of people still suffer from everyday 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 the last year we’ve already:
- Deployed onto 500+ trials across multiple conditions
- Reached seven figures in ARR, growing 25% MoM
- Raised an oversubscribed $3.8m seed from tier-one AI investors
What You'll Do
You'll build and scale the core systems that enable Delfa's AI agents to deliver real-world clinical impact.
- Design, build, and scale AI agent systems end-to-end: from voice interactions to intelligent workflow orchestration across trial sites
- Own complex projects from architecture to deployment, with real autonomy over technical decisions
- Build and evolve the infrastructure, observability, and monitoring systems needed to ensure quality and reliability at scale
- Integrate leading-edge models from AI labs into production workflows, evaluating and adopting new capabilities as the frontier moves
- Design robust data pipelines for ingesting, transforming, and serving high-quality healthcare data
- Continuously improve internal AI tooling and platform to unlock new use cases and increase team velocity
Our current tech stack:
FastAPI · Pydantic · TypeScript · React · OpenAI / Anthropic · Temporal · PostgreSQL · Honeycomb · PlanetScale · 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
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 during ETH Zurich PhD
- 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 critical product features that get new treatments to patients, faster.
Our Hiring Process
We work to get you an offer within a week with the following lean process:
- Intro chat with Gustav (CTO) - 30 mins: An informal 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.
- Coding Challenge - 90 mins: No artificial interview questions. Instead, you will work through a real-world challenge similar to problems we solve every day. You are welcome to use AI tools. We believe great engineers should know how to solve problems effectively, including with AI.
- System Design Challenge - 90 mins: We will invite you to our office to spend time with us in person. Together, we will work through a real-world system design problem. This is the best opportunity for you to see what it would be like to work with us, and for us to understand how you think and collaborate.
- Offer. If all the above goes well then you’ll receive an offer from us!
If helping unstick clinical trials and getting life-saving treatments to patients faster sounds like your idea of important work, let’s talk.
Founding Engineer in London employer: Delfa AI
Delfa is an exceptional employer, offering a unique opportunity to be part of a transformative mission in healthcare by automating clinical trials with cutting-edge AI technology. With a competitive salary, meaningful equity, and a vibrant work culture in our modern London office, employees enjoy 25 days of holiday, private health insurance, and the chance to take true ownership of impactful projects. Join a team of top-tier talent dedicated to making a real-world difference, where your growth and contributions are valued and celebrated.
StudySmarter Expert Advice🤫
We think this is how you could land Founding Engineer in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Delfa AI or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Delfa AI.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Delfa AI.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Delfa AI that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Founding Engineer in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Delfa AI.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Delfa AI and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Delfa AI
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Delfa AI uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
