Founding Backend Engineer

Role: Full-time, based in London (in-person)

Compensation: £70k-90k salary with generous equity

Benefits: Private health + dental (Bupa), post-7pm dinner budget

About Asterix: We’re solving the biggest problem in healthcare: The shortage of highly-qualified doctors. Millions of patients wait weeks for appointments. Millions more are stuck on hospital waitlists. Preventable conditions are missed and go unnoticed. Asterix is building a new model of care where highly-qualified doctors are augmented by best-in-class technology to make safer, more consistent clinical decisions. Our DoctorOS platform is becoming the backbone of modern healthcare delivery. We combine rigorous clinical leadership, real-world healthcare workflows, and AI tooling that makes doctors 10x more productive.

Your mission at Asterix: Your role will be to help us safely deploy AI in healthcare. This means owning the infrastructure to monitor, building and maintaining LLM evaluation pipelines, designing clinical document processing systems and working with NHS data integrations. This role is backend focused. You will optimise, scale and own our core backend services end-to-end, including designing APIs and data models, building reliable AWS-based systems with strong observability and security, and integrating with NHS data sources as we grow. From day one, you will build software used by doctors to deliver patient care every single day.

Who you are:

• You know our stack: React + TypeScript on the frontend; Supabase for storage; AWS on the backend.
• You care about yourself and those around you, about your work, the user and the mission.
• You want to work hard and have ambitious plans.
• You’re high agency and take ownership over complex problems.
• You’re a team player and enjoy spending time together.
• You’re hacky and have bent reality to achieve something.

Bonus if you:

• Have a clinical background or have worked in a highly-regulated environment.
• Have worked on software/AI as a medical device.
• Have previously been a technical co-founder in a company or led an engineering team.

Why join us: As Founding Backend Engineer, you have outsized impact on the trajectory of the company. This is a role where you have the trust, ownership and scope to solve complex problems your way. You’ll learn more + faster here vs anywhere else.

What it boils down to:

• Purpose & Pace: This is a once-in-a-generation shot to solve the biggest problem in healthcare.
• Top-of-Market Reward: Base Salary meaningful equity with the chance to do career-defining work.
• No Friction: We cover whatever tools or resources you need to move fast.
• A Tight-Knit Team: We work hard because we care, but we also laugh a lot, eat together, and back each other completely.

Our culture: Humble, high-intensity, joyful energy, and in-person by design. We work shoulder-to-shoulder in London.

Salary and benefits: 28 days holiday per year + bank holiday, Central London office (Shoreditch), we’re in-person 4 days a week, Private health and dental insurance by Bupa, Expensed dinner after 7pm and £250 headphone budget, Your choice of Macbook Pro and accessories, Team events + offsites.

Application process: If this sounds like you, click apply. Our interview process is straightforward and quick: Technical interview with a Founding Engineer, Culture & Motivation interview with Julian (Co-founder & CEO), Take-home task and in-person task review.