About the role

BrainOmega is a Generative AI company working across pharma and biotech. It designs and evaluates new medicines in software. Its platform, OncOmega, brings two products together: Drug Discovery, for small molecules, and RNA Discovery, which characterises and discovers RNA candidates with the evidence behind every result.

As CTO you will own the technical strategy and its delivery: a platform that trains and serves its own foundation models, runs analyses against public scientific resources, and must earn the trust of research teams and regulated enterprises. You will report to the founders and build the engineering team around you.

What you will do

- Set the technical vision and roadmap for OncOmega across both products, in step with the scientific and commercial priorities.
- Lead the machine-learning platform: training, evaluating and serving our foundation models, from GPU training runs to inference in the browser, with reproducible pipelines and a model card for every release.
- Own the architecture and its reliability: Python and FastAPI services, PostgreSQL, a React front end, and serverless GPU workloads, run for availability, cost and EU data residency.
- Make security and compliance part of the product: multi-factor authentication, audit trails, GDPR, and the path to the certifications enterprise customers ask for (ISO 27001, SOC 2).
- Build and lead the engineering team: hiring, mentoring, code review, testing and release discipline.
- Work with our scientists to turn research into dependable product features, and represent the technology to partners, customers and investors.

What you bring





- 8+ years building and shipping production software, including at least 3 years leading engineering teams.
- Experience in the life sciences — drug discovery, biotech or pharma — not only in AI: you know how research teams work and what their results must stand up to.
- Hands-on experience taking machine-learning systems to production: training, evaluation, deployment and monitoring (PyTorch, ONNX or similar).
- Strong cloud architecture skills: Python back ends, relational databases, containerised and GPU workloads.
- A security mindset, with experience of systems that handle sensitive data under GDPR or comparable regulation.
- The ability to work closely with scientists and to explain technical choices to any audience.
- Fluent English and Spanish.
- Based in Barcelona.

Nice to have

- Fluent in Catalan.
- Experience with foundation models for molecules, proteins or biological sequences.
- Bioinformatics pipelines: genome alignment, RNA-seq, public data resources such as ENA or Ensembl.
- Work in regulated environments (GxP, ISO 27001, SOC 2).
- An early-stage start-up behind you, and the appetite to build from first principles.

What we offer

- A founding leadership role with a direct say in the company’s direction.
- Equity in BrainOmega: this is an equity-only founding role, with no salary.
- A mission that matters: better treatments, sooner, for patients who are waiting — children with cancer among them.
- A role in Barcelona, at the heart of a research and innovation ecosystem that includes our partners.
- Hard, meaningful problems at the meeting point of AI, biology and software.

📌 Chief Technology Officer (CTO) (Barcelona)
🏢 BrainOmega
📍 Barcelona