At a Glance
- Tasks: Design and build AI systems to revolutionise clinical trials and improve patient outcomes.
- Company: Delfa, a pioneering tech company transforming healthcare with AI.
- 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 global health.
- Qualifications: 3+ years of full-stack engineering experience and a passion for solving complex problems.
The predicted salary is between 60000 - 80000 £ 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 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
What You'll Do
- 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 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 critical product features that get new treatments to patients, faster.
Our Hiring 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.
Software Engineer in London employer: Delfa
Delfa is an exceptional employer, offering a unique opportunity to work at the forefront of AI technology in clinical trials. With a strong focus on employee growth and autonomy, team members are empowered to take ownership of critical projects that directly impact patient care. Located in a vibrant London office, Delfa fosters a collaborative and innovative work culture, complemented by competitive salaries, equity options, and comprehensive benefits including private health insurance and gym memberships.
StudySmarter Expert Advice🤫
We think this is how you could land Software Engineer in London
✨Tip Number 1
Get ready for that intro chat with Gustav! It's all about showcasing your experiences and values, so think about what makes you tick. We want to see your personality shine through, so don’t hold back!
✨Tip Number 2
When it comes to the coding challenge, treat it like a fun puzzle rather than a test. Use AI tools if you need them – we’re all about solving problems effectively. Show us how you think and tackle real-world issues!
✨Tip Number 3
For the system design challenge, come prepared to collaborate! This is your chance to demonstrate how you work with others. Think out loud and engage with us; we love seeing how you approach complex problems.
✨Tip Number 4
Finally, don’t forget to apply through our website! It’s the best way to get your foot in the door and show us you’re serious about joining our mission to revolutionise clinical trials. Let’s make a difference together!
We think you need these skills to ace Software Engineer in London
Some tips for your application 🫡
Show Your Passion:When writing your application, let your enthusiasm for the role shine through! We want to see that you’re genuinely excited about using AI to transform clinical trials and improve patient outcomes.
Tailor Your CV:Make sure to customise your CV to highlight relevant experience. Focus on your full-stack engineering skills and any projects that demonstrate your ability to solve complex problems, as this is what we’re really looking for!
Be Clear and Concise:Keep your application straightforward and to the point. We appreciate clarity, so avoid jargon and make it easy for us to understand your achievements and how they relate to the role.
Apply Through Our Website:Don’t forget to submit your application through our website! It’s the best way for us to receive your details and ensures you’re considered for the role. We can’t wait to hear from you!
How to prepare for a job interview at Delfa
✨Know Your Tech Stack
Familiarise yourself with Delfa's tech stack, including FastAPI, TypeScript, and PostgreSQL. Be ready to discuss how you've used similar technologies in your past projects and how you can apply them to build and scale AI agent systems.
✨Showcase Your Problem-Solving Skills
Prepare to share specific examples of complex technical problems you've solved. Highlight your thought process, the challenges faced, and how you approached refactoring or improving existing solutions. This will demonstrate your ownership mindset and ability to deliver high-quality products quickly.
✨Emphasise Your Growth Mindset
Delfa values continuous improvement, so be ready to discuss how you've sought feedback and adapted your work over time. Share instances where you've taken pride in your projects and how you've pushed yourself to learn new skills or technologies.
✨Engage in the Coding Challenge
During the coding challenge, treat it as a collaborative problem-solving session rather than a test. Use AI tools if needed, and communicate your thought process clearly. This will not only showcase your technical skills but also your ability to work effectively within a team.
