Développeur ERP Sage X3 - H/F

Conduct ERP lifecycle management for Sage X3 systems by participating in version upgrades, module additions, and partial or global refactors. Intervene in functional and technical scoping, contribute to unit, integration, and user acceptance testing campaigns, and coordinate with internal project teams and external partners. Serve as the key contact for users regarding ERP subjects, providing tailored responses that balance technical constraints with business needs while supporting team adoption. Ensure system availability, reliability, and performance by diagnosing and resolving incidents and evolving requests. Supervise application interfaces for finance and logistics flows, collaborate with IT and technical partners, and design specific developments under Sage X3. Maintain corrective and evolutionary maintenance of existing components, optimize and rationalize developments where appropriate, and guarantee code quality through adherence to standards and best practices.