💼 Full-Time Position

Senior ML/LLM Engineer (API & Fullstack) - English Mandatory

🏢
Sopra Steria Group
📍 barcelona, cataluña, Spain
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Location
barcelona, Spain
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Posted
May 21, 2026
Type
Full-Time
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Full-Time Opportunity: This is a permanent, full-time position with a competitive package and real career growth potential.

Job Description

  • Full-time

Job Description

This role is for a Senior ML/LLM Engineer with strong data science capabilities and a significant focus on API development and full-stack engineering principles . They will be responsible for the end-to-end lifecycle of machine learning solutions, from model conception and development to building robust, scalable APIs and integrating them into production applications.

Qualifications

  • Statistical Models & Machine Learning: Develop, test, and validate statistical and machine learning models in Python. Explore, select, and prepare datasets, including feature engineering using libraries like NumPy , Pandas , Polars , and SciPy .
  • Advanced ML Libraries: Develop and implement classification, regression, and other predictive models leveraging libraries such as Scikit-learn , XGBoost , LightGBM , CatBoost, and deep learning framew...