Machine Learning Research EngineerPresencial at Seqera in Barcelona, CT, ES. This Full time on site position offers great opportunities for career growth.

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About SeqeraSeqera is on a mission to empower scientists and organizations to solve humanitys biggest challenges through data-driven science. As the company behind Nextflow and the Seqera Platform, we enable global enterprises, biotech innovators, academic institutions, and public sector organizations to scale complex data workflows with confidence.
About the roleWe are hiring a Research Engineer to own the improvement loop for a research engine we are building on top of the Seqera Platform.
You will build the data and evaluation flywheel from engines own run data, and use it to post-train small, task-specific models that make it better at generating, ranking and running scientific ideas.




You will work directly with our Founding Scientist and the engineers who own the application, on a small team that moves fast and ships to real scientists.
This is an in-office role in Barcelona. The team is here, the whiteboards are here, and this is the kind of work that goes faster in the same room.
What Youll Do
- Design and build the evaluation suite that defines what better means for an autonomous research agent.
- Build the pipeline that turns messy, real-world run data from deployments into a training-ready corpus.
- Post-train small open-weight models SFT, preference tuning, adapters to beat frontier-API baselines on core tasks at lower cost and latency.
- Run repeated training cycles on evolving data.
- Participate in journal clubs, stay at the frontier of post-training specialized models.
- Own the Next-Gen roadmap with our Founding Scientist: what data unlocks what capability, and in what order.

About you
- You have post-trained o

📌 Machine Learning Research Engineer, presencial at Seqera (Barcelona)
🏢 Seqera
📍 Barcelona