At a Glance
- Tasks: Build and scale core systems for AI agents in clinical trials, including automated monitoring and data extraction.
- Company: Delfa is revolutionising clinical trials with autonomous AI agents to improve patient recruitment.
- Benefits: Enjoy a competitive salary of £100k-120k, private health insurance, and gym membership.
- Other info: Work onsite in London, 5 days a week, in a modern office near Old Street station.
- Why this job: Join a fast-growing team with 300% MoM product growth and true ownership of critical features.
- Qualifications: 3+ years of full-stack engineering experience and a track record of building high-quality products quickly.
The predicted salary is between 100000 - 120000 £ per year.
Location: London
Employment Type: Full time
Location Type: On-site
Department: Engineering
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, 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 $3.8m 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.
Software Engineer in London employer: PassFort
Delfa is based in London and offers a base salary of £100k-120k plus equity. The team includes experts from Roche and Medtronic, fostering a culture of innovation and impact.
StudySmarter Expert Advice🤫
We think this is how you could land Software 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 PassFort 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 PassFort.
✨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 PassFort.
✨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 PassFort 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 Software 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 PassFort.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at PassFort 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 PassFort
✨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 PassFort 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.
