Senior ML Engineer - Hybrid (Barcelona)

Aristocrat; Barcelona; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid work model

Office in Barcelona

Health and wellbeing benefits

Bonus opportunities

Job summary

Aristocrat in Barcelona is seeking a Senior ML Engineer to build production ML models for prediction, personalization, and decision support, and to deploy robust AI applications across platforms.

You will collaborate with Data Scientists, MLOps Engineers, and Data Engineers to translate requirements into scalable services, improve performance, and ensure reliability. The role blends research with production engineering in a hybrid setup at our Barcelona office.

Qualifications

• Strong Python programming and software engineering practices.
• Experience with ML model development, evaluation, and deployment.
• Familiarity with ML frameworks (scikit-learn, PyTorch, TensorFlow).
• Experience with LLMs, RAG, and agentic workflows is a plus.

Responsibilities

• Develop production ML solutions for prediction, recommendation, and personalization.
• Build AI applications including LLM-powered tools and RAG systems.
• Translate ML requirements into reliable software components and APIs.
• Collaborate with Data Scientists, MLOps, Data Engineers and product partners.
• Contribute to architecture discussions and improve engineering standards.

Skills

Python

Software engineering

SQL

Cloud platforms

MLOps

Tools

scikit-learn

PyTorch

TensorFlow

Job description

Aristocrat in Barcelona is seeking a Senior ML Engineer to build production ML models for prediction, personalization, and decision support, and to deploy robust AI applications across platforms.

You will collaborate with Data Scientists, MLOps Engineers, and Data Engineers to translate requirements into scalable services, improve performance, and ensure reliability. The role blends research with production engineering in a hybrid setup at our Barcelona office.