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Ubisoft

Global video game developer and publisher

Machine Learning Programmer

Natural Language Processing & LLMsConfirmed live in the last 24 hours
Full-timeMontreal, QC, CanadaNo salary listedIn-person

About the Job

Requirements

  • At least 5 years of applied machine-learning experience with information-retrieval systems or production natural-language processing.
  • Proficiency in Python and machine-learning/natural-language-processing frameworks, including LangChain, LlamaIndex, and Hugging Face Transformers.
  • Demonstrated experience with retrieval-augmented generation architectures, embedding models (OpenAI, Cohere, BGE), vector databases (Qdrant, pgvector, Weaviate, Pinecone), and reranking with cross-encoders.
  • Proficiency with large language model APIs (Claude, OpenAI GPT) and advanced prompt-engineering techniques, including few-shot, chain-of-thought, and structured outputs.
  • Experience with retrieval-augmented-generation evaluation frameworks such as RAGAS, MRR/NDCG metrics, and building evaluation datasets.
  • Knowledge of AWS and Databricks cloud environments (MLflow, Feature Store) and containerized environments.
  • Demonstrated technical leadership and ability to work with ambiguity.

Responsibilities

  • Define and drive technical direction for retrieval pipelines, including chunking, semantic indexing, vector search, and reranking.
  • Establish platform evaluation standards and make answer quality a key metric in the development cycle.
  • Define the approach to large language model integration in a multi-tenant context, including context management, prompt engineering, cost control, and evolution toward agentic capabilities.
  • Proactively identify limitations in the current architecture and propose improvements before they affect users.
  • Mentor junior and intermediate team members on machine-learning best practices and experimental rigor.
  • Serve as a trusted point of contact for client teams and stakeholders on artificial-intelligence topics.

About the Company

Ubisoft

Global video game developer and publisher

Ubisoft is a global developer and publisher of interactive entertainment, creating, marketing, and selling video games for consoles, PCs, and mobile devices. Its products run as traditional paid games, in-game purchases, and subscription services, and are supported by major franchises such as Assassin’s Creed, Far Cry, and Rainbow Six. Games are built to run across platforms with optional in-game purchases and ongoing services, and Ubisoft also develops its own tech, like Ubisoft Scalar, to streamline game development and enhance player experiences. The company differentiates itself through its large portfolio of enduring franchises, its in-house technology investments, and its active support for esports, community building, accessibility, and inclusion. Ubisoft’s goal is to deliver engaging interactive experiences at scale, grow its global gaming ecosystem, and maintain leadership in game development and publishing while expanding services and accessibility for a wide audience.

Company size
10,001+
Company stage
IPO
Headquarters
Montreuil, France
Founded
1986

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