Cori Clinical is the operating system behind better clinical trials. Cori builds the best-in-class AI platform for the entire trial startup: research, design, authoring, review, and amendments, so the science never waits on the process. Founded in 2025 by Jorn Jansen Schoonhoven (CEO, ex-Amazon, ex-IBM) and Patricio Fernández Weisson (CTO, ex-AstraZeneca, ex-Sanofi), and backed by leading investors.
Why join:
Help redefine how clinical trials are run using AI, in one of the most important industries in the world,
Work alongside a small team of exceptional engineers, operators, and clinical experts solving genuinely hard problems,
High freedom for research and testing, with lots of green fields for your ideas,
Build systems that don't just automate workflows, they accelerate getting new treatments to patients faster,
Work directly with leadership and founders.
Values
High agency,
Curiosity,
Creativity,
Accountability,
Transparency.
Mission highlights
We are building an AI-guided system that accelerates clinical trials to speeds never seen before. So any organization, large or small, can get medicine to patients faster.
Reporting Line
Patricio, Co-Founder & CTO.
Responsibilities
Own AI-related technical decisions across the company and products,
Design and build agent frameworks for complex, multi-step workflows,
Go beyond RAG: tool use, structured outputs, multi-agent/multi-chain systems,
Build eval and feedback loops (testing, scoring, iteration),
Ship reliable, production-grade AI systems (accounting for latency, cost, and failure modes),
Turn messy clinical processes into deterministic, auditable systems,
Stay current with and experiment with SOTA technologies in the field.
Competencies
5+ years of backend engineering experience, including 1-2+ years building LLM-based systems in production,
Strong Python backend engineer (FastAPI, infrastructure, data structures),
Real, hands-on experience with LLMs in complex, agent-based workflows, not just API calls to a foundation model,
Comfortable guiding decisions on LLM/SLM fine-tuning strategy,
Track record shipping multi-step/agentic systems to production, not just prototypes,
Experience with evals, observability, and system reliability practices,
Solid ML/NLP fundamentals,
Prior experience in a startup or fast-paced environment strongly preferred,
Fully fluent in English (mandatory).
Stack: Python, FastAPI, LangGraph, Postgres, Vector DBs, GCP/AWS, Docker
Recruitment process
Screening with Patricio (Cofounder & CTO),
Case study,
Debrief with Cori engineers,
Final interview with Emma (Chief Clinical Officer) and Jorn (Cofounder & CEO).
Compensation & benefits
90-95K (EU) + equity,
Hybrid 3 days in-office / Barcelona,
Health insurance,
Lunch vouchers through Cobee.
At Breega, we back world-class founders for the future. We’re not simple investors - we’re entrepreneurs who’ve built, scaled, and learned what it really takes to grow.
Our forte is not just writing checks: it’s rolling up our sleeves - with our Scaling Squad, our portfolio companies get hands-on expertise in hiring, sales, marketing and strategy so they don’t just expand, they dominate.
We partner with outliers rewriting the rules of Digital, Climate, and Deep Tech from pre-Seed to Series A+ across Europe and Africa.
Since 2015, we’ve grown to €700M AUM, with main offices in London and Paris and deep roots in the most thriving tech hubs across both continents, as well as a portfolio of 110+ bold startups—Exotec, Alice & Bob, Moneybox, 011H, etc—each pushing the boundaries of what’s possible.
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