Senior ML Engineer - NLP, Graph ML & LLM Production

Ubisoft; Saint-Mandé; Sur place; EUR 90 000 - 140 000; Plein temps

Avantages offerts par ce poste

Profit Sharing

Paid time off + extra days

Healthcare for you and family

Lunch vouchers

Résumé du poste

Ubisoft in Saint-Mandé (Paris area) is seeking a Senior Machine Learning Engineer to design and deploy production-grade ML systems focused on player safety and security. You will work at the intersection of NLP, anomaly detection, graph learning, and LLMs to move beyond prototyping.

We value hands-on Python engineering, CI/CD, MLOps, and collaboration with data and software engineers to ship models to production on cloud platforms.

Qualifications

• Strong Python software engineering skills with clean code, testing, documentation, CI/CD.
• Proven experience deploying and monitoring production ML models (MLOps, model serving, drift monitoring).
• Hands-on NLP / LLMs experience: fine-tuning transformer models, prompt engineering, RAG, or LLM pipelines.
• Experience with graph-based ML (GNNs) is a strong plus.
• Knowledge of anomaly detection or fraud/trust & safety systems in production.
• Experience with distributed data processing (Spark) and cloud data platforms; familiarity with Databricks or Azure services is a plus.
• Strong communication skills; English is mandatory.
• Ideal candidate: token classification (NER) and/or GNN training.

Responsabilités

• Design, train, and deploy ML models across a range of player safety and security use cases, spanning NLP, anomaly detection, and graph-based learning.
• Evaluate and implement state-of-the-art ML techniques — adapting the latest research in deep learning, NLP, and graph learning to production constraints, implementing from scratch when needed.
• Take full ownership of the projects you build: interact with stakeholders, define success metrics, monitor live systems, and iterate.
• Write, optimise, and ship high-quality code that runs at scale, applying modern MLOps best practices (CI/CD, model versioning, observability).
• In collaboration with data and software engineers, deliver models and prediction pipelines to production on our internal or public cloud infrastructures.

Connaissances

Python

CI/CD

NLP / LLMs

GNNs

Anomaly detection

Distributed data processing

Spark

Databricks / Delta Live Tables

Azure cloud

Communication in English

Description du poste

Ubisoft in Saint-Mandé (Paris area) is seeking a Senior Machine Learning Engineer to design and deploy production-grade ML systems focused on player safety and security. You will work at the intersection of NLP, anomaly detection, graph learning, and LLMs to move beyond prototyping.

We value hands-on Python engineering, CI/CD, MLOps, and collaboration with data and software engineers to ship models to production on cloud platforms.