As a founding AI hire at Onsera Health, you will design and deploy production-grade agentic systems to revolutionize cardiometabolic care. Working within the elite Population Health Partners ecosystem, you’ll build voice-based intake and patient engagement tools that move beyond prototypes to deliver real-world clinical impact for millions of patients globally.
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London, UK£85k-£125k + Equity
Featured roleLondon, UK£85k-£125k + Equity
AI Engineer at Onsera Health — VC-backed healthcare AI startup
Join Onsera Health as a founding AI Engineer and build the future of cardiometabolic care. Backed by the venture powerhouse Population Health Partners—the team behind Metsera’s massive success—you'll design and deploy production-grade agentic AI systems that tackle the world's leading cause of death. This isn't just prototyping; you'll be building voice-based intake and patient engagement tools with real clinical impact. If you're an ambitious engineer with 0-3 years of experience and a passion for LLMs, RAG, and high-stakes healthcare innovation, this is your chance to secure a ground-floor role with significant equity and world-class mentorship in London.
Overview
Why this role stands out
Company
Responsibilities
What you will do
- Design, develop, and operationalize patient-facing agentic AI workflows using LLMs, including voice-based intake and clinician-facing automation tools.
- Conduct rigorous experimentation and evaluation of model performance across accuracy, safety, and latency metrics to ensure clinical appropriateness.
- Partner with clinical and product teams to translate complex medical requirements into robust, production-ready AI solutions and software architectures.
Candidate profile
Who this is a fit for
- 0-3 years of experience in AI/ML or Software Engineering with a proven track record of shipping production-grade LLM features (RAG, function calling, agents).
- Highly proficient in Python and modern software fundamentals including clean code, version control, and cloud deployment (GCP/AWS/Azure).
- Ambitious, "punching above their weight" builder who thrives in a hybrid London startup environment and is excited by mission-driven healthcare challenges.
What makes it remarkable
Why this role is remarkable
- Join a ground-floor venture backed by Population Health Partners, the powerhouse platform behind Metsera (acquired by Pfizer) and other multi-billion dollar health exits.
- Work directly with industry pioneers including founders of The Medicines Company and McKinsey/QuantumBlack alumni in a fast-paced, high-runway environment.
- Shift from research to reality by building agentic AI that manages cardiometabolic conditions, the world’s leading cause of death, using cutting-edge LLM orchestration.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
About Jack & Jill
Meet Jack
Jack gets to know what you are great at, what you want next, and makes sure Jill considers you for the right opportunities.
How does this work?
Jack's an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack's network.
If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
Jack