Overview
In this role you will advance an autonomous research agent by designing an evaluation suite and data-to-training pipeline. You’ll post-train small open-weight models to improve generation, ranking and execution of scientific ideas, collaborating with the Founding Scientist and a focused engineering team in Barcelona. You’ll iterate on evolving data, publish results in journal clubs, and shape the Next-Gen roadmap to unlock capabilities in the Seqera Platform.
Compensaciones / Incentivos
Flexible working hours
Private health insurance
Private life insurance
Equity
Home office allowance (valued over 1000 USD)
Learning and development budget (1000 USD)
Responsabilidades
Design and implement the evaluation suite to define “better” for the autonomous research agent
Build a pipeline to convert deployment run data into a training-ready corpus
Post-train small open-weight models (SFT, preference tuning, adapters) to beat baselines with lower cost and latency
Run repeated training cycles on evolving data




Participate in journal clubs and stay at the frontier of post-training specialized models
Own the Next-Gen roadmap with the Founding Scientist, defining data-to-capability sequencing
Requisitos principales
Post-trained open-weight language models with SFT and at least one preference-tuning method
Experience retraining models on changing data, handling regression and forgetting (replay, data mixing, adapter strategies, eval gating)
Built evaluation harnesses for specific tasks and defended results
Fluent Python and modern stack (PyTorch, transformers, TRL, PEFT, vLLM or equivalents)
Strong open-source footprint or contributions to the mentioned tools, or fine-tuned models on the Hub
Proactive operator mindset; ability to build pipelines when tooling is incomplete
Willingness to work in-office in Barcelona or relocate
Problem-solving and initiative
Collaborative mindset and ability to defend results to skeptics
Adaptability in data/tooling directions and ambiguity
Pos

📌 Machine Learning Research Engineer (Barcelona)
🏢 Jobrapido
📍 Barcelona