AI engineer (AI & GenAI) - People Domain

Worldwide | Sept. 28, 2026

Report as Closed

Company: Decathlontechnology

Country: Worldwide

Type: Onsite

Employment: Full-time

Description:

As part of the opening of a permanent position, we are recruiting an AI engineer, based in Paris.

🚀 CONTEXT & STRATEGIC CHALLENGES

Within Decathlon Digital, the People Data team is undertaking a major initiative: transforming the experience of our 100,000 employees through the integration of Generative and Agentic AI.

Faced with the fragmentation of the HR ecosystem in more than 70 countries, our ambition is to build a layer of simplification based on the new solutions offered by AI. This is a centralized and tool-agnostic intelligence layer, capable of interacting with our entire infrastructure (Workday, Data Lake, University, etc.) to evolve our interfaces from consultation logic to action logic.

In this context, we are developing DaiLY, our HR conversational agent. It helps our employees and managers instantly access reliable information, sourced from our Workday documentation and our People policies.

Already deployed successfully in France, DaiLY is entering a new phase of scaling up: international expansion, industrialization of evaluations, continuous improvement of our models and their qualities and deployment and integration of autonomous HR agents.

To lead this project, we are not only looking for a developer, we need a "Builder": a person capable of translating a business need into a technical solution, implementing it, qualifying it, deploying it and maintaining it over time.

 🎯 YOUR MISSION

We are looking for an experienced AI Engineer to actively participate in the industrialization and development of DaiLY. Your objective is clear: transform HR business needs into reliable, measurable and robust AI functionalities.

To meet this challenge, you will evolve within a dedicated collective, in direct collaboration with other AI Engineers, a Lead AI Engineer (who will guide the overall architecture choices) and a Product Manager. This local organization will allow you to ensure perfect synergy between product issues, the roadmap and technical implementation.

You will have a key role in the evolution of DaiLY: moving from a simple consultation model (Q&A) to a true transactional agentic system capable of triggering concrete actions (e.g.: taking leave in Workday, registering for training via Decathlon University).

🛠 YOUR RESPONSIBILITIES

1. Agentique Development & Features

• Participate in extending DaiLY's capabilities towards write actions by implementing tool-calling protocols (MCP - Model Context Protocol) and inter-agent communications (A2A).
• Implement advanced chunking and re-ranking strategies to prioritize rules specific to the HR domain.
• Contribute to the optimization of costs, latency and overall system efficiency in conjunction with the Platform and Infrastructure teams.

1. Quality, Evaluation & Observability (LLMOps)

• Develop and maintain the quality layer of the multi-agent RAG pipeline (Vertex AI Search / Discovery Engine).
• Ensure grounding of responses and verification of citations to ensure traceability to a source of truth.
• Set up robust observability pipelines for online and offline evaluation (OpenTelemetry, MLflow).
• Code automatic evaluators based on golden datasets to iterate calmly and prevent regressions before each release into production.
• Integrate guardrails to protect the system and users against hallucinations and errors.

1. Security, Partitioning & International deployment

• Access Management (ACLs): Implement granular and dynamic management of access rights at the indexing and retrieval level, ensuring that a

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