Freelance IT job

Senior IBM i / RPG Developer (Wynne RentalMan ERP)

Antwerp · apply before 31 December 2026

Job description

  • Startdatum: 1 december 2026
  • Duur: 6 maanden
  • Locatie: Boom, België
  • Thuiswerk: 3/5

About the Project

To support international growth and an ambitious global ERP rollout within a leading multinational industrial enterprise, the client is scaling its engineering capacity. The team is actively expanding and tailoring its core ERP platform, Wynne RentalMan, across multiple international markets.

The initiative is currently focused on a critical milestone involving go-lives across key markets in the Middle East and Europe, followed by several additional country onboardings throughout 2027. We are looking for an experienced IBM i / RPG Developer to hit the ground running, help meet these deployment targets, and deliver robust ERP solutions.

Your Role

In this role, you will be a key contributor to the ERP engineering and integration efforts:

  • Design, build, and optimize backend business logic using RPG/ILE, CL, and DB2/400.
  • Develop and maintain integrations between RentalMan and external systems via Web Services, XML, and messaging middleware (MQ Series-like tech).
  • Support international country rollouts, including specific local compliance and financial flows such as E-invoicing.
  • Ensure smooth version control and deployments using Aldon (Change Management).
  • Oversee end-to-end application lifecycle management, from technical design to testing and deployment.

Who We Are Looking For

Must-Haves

  • Technical Core: Proven expertise in RPG/ILE and CL programming on IBM i (AS/400).
  • Database & Querying: Hands-on experience with (RPG embedded) SQL, SQL/400, DB2/400, and Printer Files.
  • Integrations: Solid track record in interfacing ERP systems with third-party applications (Web Services, XML, MQ Series / messaging tech).
  • Change Management: Working knowledge of Aldon (or similar change management / deployment tooling).
  • Language & Education: Fluent in English (written & spoken). Bachelor’s or Master’s degree in ICT, Economics, or equivalent through practical experience.

Valuable Assets

  • Hands-on experience with Wynne Systems RentalMan ERP (or comparable equipment rental / asset management ERP).
  • Direct experience with E-invoicing implementations across European and international tax frameworks.
  • Broad understanding of diverse business processes (rental logistics, supply chain, finance, asset tracking).

Why Join This Project?

  • High Impact: Directly drive the international expansion of a mission-critical enterprise system.
  • Long-Term Visibility: Immediate milestone with a clear pipeline of global country onboardings planned across 2027.
  • Collaborative Culture: Work with an experienced, goal-oriented team focused on pragmatic and scalable technical design.
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