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# Machine Learning Engineer

- **Company:** ProntoPro
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Python (Programming Language), Machine Learning, Language Modeling, Pytorch, Large Language Models, Pandas, Scikit Learn, HuggingFace
- **Published:** August 16, 2026
- **Apply:** https://es.trabajo.org/oferta-9000-29cca3bea2dec96e73367241976ef127

## About the Role

early. HOW TO APPLY Their process is short and transparent: an initial questionnaire, 30-minute call with the person you would work with, then two or three conversations and a decision within about two weeks. Requirements: - Solid Python and a real grounding in machine learning (PyTorch, scikit-learn, pandas, Hugging Face). - Evidence that you build and finish things, and that you reason carefully about why a model works or fails. You do not need years of experience - recent graduates and self-taught engineers are welcome. A degree helps; something real you have built counts for more. Pluses: - Document-AI experience (LayoutLM, Donut, TrOCR) or LLM fine-tuning. - Spanish or Catalan. - Any exposure to finance, legal, or real-estate data. Sof-skills: Curiosity, precision, and clear communication

## Description

and quant models across thousands of Spanish loan and property records - asset valuation, portfolio-performance forecasting, feature enrichment, tabular and time-series modeling. The numbers you produce guide real capital, so evaluation and calibration are where the craft lives. Teaching a model to read a courtroom Legal and judicial documents - multi-column, table-dense PDFs where layout and position carry meaning, not flat text - turned into clean, structured data. OCR, layout-aware extraction, NER, and LLM fine-tuning and evaluation. You would weigh the trade-offs that decide whether extraction is dependable or merely demo-ready: OCR + LayoutLMv3 versus OCR-free approaches (Donut, TrOCR) versus vision-language models. You would own work across both systems end to end - training, evaluation, deployment, and monitoring, in production rather than in notebooks. It is an unusual amount of scope for an early-career engineer, and you will grow into more of it quickly. WHAT THIS ROLE IS,
AND IS NOT - Real, production machine learning the business runs on - not a research sandbox, and not a thin wrapper around someone else's API. - Collaborative and consequential: you build alongside talented people on work that matters, not a queue of tickets someone else has scoped. - Honest about the data: it is genuinely messy, and structuring it is part of the craft - the ambiguity is where the interesting problems live. You will have real infrastructure, experiment tracking, and an evaluation harness to build on. WHAT THEY OFFER - Genuine flexibility on where you work: fully on-site in Barcelona or any hybrid split - and the number of days is yours, not a policy. - A competitive salary for the Barcelona market, discussed openly. - A real learning budget - books, courses, and conferences. - A flexible-remuneration plan covering meals and transport. - The rarest perk: a domain almost no ML engineer gets to touch, and the scope to own it


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