We're looking for an RPG Developer to join our team supporting a mission-critical Warehouse Management System (WMS) built on IBM AS/400 (IBM i). This application is the operational backbone for our warehouse and logistics operations, and the developer in this role will maintain, enhance, and modernize it — including a web front end and an expanding set of API-based integrations.

This is a great opportunity for someone who enjoys working across a full stack that spans legacy RPG business logic, SQL-based data access, and contemporary web/API technologies, and who wants to be part of a team actively modernizing how the system connects with the outside world.

What You'll Do

- Design, develop, test, and maintain RPG (RPG IV / RPGLE preferred) programs on the IBM AS/400 (IBM i) platform supporting core WMS functionality
- Write and optimize SQL queries and stored procedures for data access, reporting, and integration needs




- Support and enhance the HTML-based front-end application that interfaces with the AS/400 back end
- Design, build, and maintain RESTful APIs to support customer and internal system integrations, as part of the company's ongoing shift toward API-first connectivity
- Troubleshoot and resolve production issues across the RPG application, database layer, and web front end
- Collaborate with business stakeholders, warehouse operations teams, and other developers to gather requirements and translate them into technical solutions
- Participate in code reviews, testing, and documentation of new and existing functionality
- Contribute to the ongoing modernization roadmap for the WMS platform, including opportunities to introduce new tools, frameworks, or approaches where appropriate

📌 RPG Developer (Canada)
🏢 Hays
📍 Canada