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Decathlon

Designs and sells sports equipment and clothing

Chef de Projet IT Technique - Modernisation WMS / Transformation IBM i

Project ManagementConfirmed live in the last 24 hours
Full-timeLille, FranceNo salary listed

About the Job

Requirements

  • At least 3 to 4 years of successful experience managing complex information systems or IT projects, ideally involving application reengineering, legacy-platform modernization, or database migration in supply chain, retail, or logistics.
  • Understanding of traditional application architectures such as IBM i, AS400, RPG, DB2, and mainframe systems, and modernization approaches such as SQL, ILE architectures, microservices, CI/CD pipelines, and GitHub.
  • Experience managing vendors or IT services companies under fixed-price, deliverables-based contracts, establishing rigorous routines, and tracking performance indicators.
  • Methodical approach to structuring acceptance testing campaigns and managing production-availability risks.
  • Professional written and spoken English to lead committees and communicate with international partners and teams.

Responsibilities

  • Lead iterations of the application-platform modernization, including impact analysis, preparation, conversion, acceptance testing, deployment, and stabilization.
  • Coordinate retrofit work to synchronize business changes made in parallel on the existing warehouse management system during migration.
  • Make technical and functional trade-off decisions, including functional equivalence, CPU and input/output performance KPIs, and frozen-zone constraints, and facilitate steering committees.
  • Manage and challenge the contracted external provider, including roadmap tracking, deliverable milestone validation, conversion quality checks, budget monitoring, and deployment support and responsiveness.
  • Coordinate large-scale automated regression-testing campaigns across thousands of programs and data files with the Tech Lead and Quality Analysts.
  • Connect IBM i and systems experts, architects, DevOps teams, and logistics business representatives to secure production releases without disrupting operations.
  • Secure the warehouse management system cutover without affecting deliveries across the warehouses.
  • Ensure all converted programs and the database are validated without functional regression or performance loss.

Desired Qualifications

  • Experience with application reengineering, legacy-platform modernization, or database migration in supply chain, retail, or logistics is preferred.

About the Company

Decathlon

Designs and sells sports equipment and clothing

Decathlon designs, makes and sells sports equipment, footwear and clothing for people ranging from beginners to competitive athletes. Its own sports brands cover activities such as hiking, cycling, running and swimming, with products developed around the needs of each sport. Teams manage product design, production and distribution, combining physical stores with online shopping to sell directly to consumers while also carrying selected partner brands. Revenue comes from sales of sporting goods, with its own product development and purchasing operations supporting a broad assortment at accessible prices. Founded in 1976, Decathlon is headquartered in Villeneuve-d'Ascq, France.

Company size
10,001+
Company stage
Not listed
Total funding
Not listed
Headquarters
Not listed
Founded
1976

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