Senior ML Engineer - Personalization for Gaming (Hybrid)

Aristocrat Technologies Inc; Barcelona; Hybrid; EUR 90,000 - 130,000; Full time

Job summary

Aristocrat Technologies Inc. is seeking a Senior ML Engineer to design and deploy production ML solutions for personalized gaming experiences. You will build AI applications, including LLM-driven tools and RAG workflows, and work across data scientists, MLOps, and product partners to deliver scalable AI capabilities.

The role emphasizes robust, maintainable Python code, solid data engineering fundamentals, and collaboration to raise the standard of ML systems in a hybrid Barcelona environment.

Qualifications

• Expert-level Python programming and software engineering practices.
• Hands-on experience with supervised learning using scikit-learn, PyTorch, TensorFlow, or similar.
• Experience with deploying ML solutions in cloud environments and CI/CD pipelines.
• Strong SQL skills and data integration through APIs and data sources.
• Familiarity with data preprocessing, quality, and feature engineering.
• Experience building production-grade ML services, monitoring, and lifecycle management.

Responsibilities

• Develop production ML solutions: build, train, evaluate, and optimize models for prediction and personalization.
• Build AI applications: integrate LLMs, RAG systems, and agentic workflows into internal tools.
• Engineer end-to-end solutions: translate ML requirements into reliable software components and APIs.
• Analyze ML/AI systems: validate model quality, identify failure modes, ensure robustness and safety.
• Integrate models into production: collaborate with MLOps to deploy and monitor solutions.
• Enhance performance: optimize inference speed, latency, and resource usage.
• Apply engineering guidelines: write clean Python code, automate tests, document, and handle errors.
• Work with complex data: retrieve and prepare data from multiple sources for training and evaluation.
• Collaborate across teams: partner with Data Scientists, Data Engineers, and product teams.
• Contribute to technical excellence: participate in architecture discussions and mentoring.

Skills

Python

ML & DL

Cloud platforms

SQL

Data pipelines

Production ML

Job description

Aristocrat Technologies Inc. is seeking a Senior ML Engineer to design and deploy production ML solutions for personalized gaming experiences. You will build AI applications, including LLM-driven tools and RAG workflows, and work across data scientists, MLOps, and product partners to deliver scalable AI capabilities.

The role emphasizes robust, maintainable Python code, solid data engineering fundamentals, and collaboration to raise the standard of ML systems in a hybrid Barcelona environment.