WMi Developer - AS400
First seen by Alion on Oct 16, 2026.
Job Description :
Key Responsibilities :
- Design, develop, enhance, test, and support solutions involving JDE on AS/400 / IBM i, WMi, and MIF.
- Develop and maintain interfaces between JDE and warehouse-management systems.
- Work with legacy IBM i components, batch jobs, database objects, files, and integration processes.
- Analyze business requirements and translate them into technical solutions across ERP, WMS, and middleware platforms.
- Troubleshoot production issues across JDE, WMi, MIF, DB2, batch processes, interfaces, and downstream systems.
- Support core supply-chain workflows including order processing, inventory movements, receiving, put-away, picking, packing, shipping, replenishment, warehouse transfers, and shipment confirmation.
- Perform impact analysis for changes across interconnected systems.
- Develop and maintain interfaces using batch files, database transactions, messaging, APIs, or other integration mechanisms.
- Implement robust logging, monitoring, reconciliation, and error-handling mechanisms.
- Support testing, release management, deployment, production support, and hypercare.
- Create technical documentation, interface specifications, support procedures, and troubleshooting guides.
- Work closely with the Architect, business analysts, supply-chain teams, and production-support teams.
Required Experience :
- 5+ years of enterprise application development experience.
- Strong development experience with JD Edwards running on IBM AS/400 / IBM i.
- Hands-on knowledge of IBM i technologies, preferably including DB2 for i, RPG / RPGLE, CL / CLLE, batch jobs, and database processing.
- Experience supporting or developing integrations between JDE and WMS platforms.
- Hands-on experience with WMi or a comparable on-premise Warehouse Management System.
- Experience with middleware/integration frameworks; MIF experience is preferred.
- Strong understanding of logistics, warehouse operations, inventory, and supply-chain processes.
- Strong debugging, root-cause analysis, and production-support skills.
- Experience with batch, file, database, API, and messaging-based interfaces.
Preferred Experience :
- Retail, distribution, CPG, or logistics industry experience.
- Experience supporting high-volume, business-critical warehouse environments.
- Familiarity with warehouse automation and RF-enabled operations.
- Experience modernizing or exposing AS/400 / IBM i functionality through APIs or modern integration layers.
- Exposure to CI/CD, monitoring, observability, and automation.
Ideal Team Profile :
The team should collectively bring : JDE on AS/400 / IBM i expertise + WMi expertise + MIF / integration expertise + Logistics & Supply Chain domain knowledge.
The key requirement is the ability to understand the full business and technical transaction lifecycle : JDE / ERP MIF Middleware WMi / Warehouse Execution Logistics & Fulfillment.
The team should be equally comfortable supporting the stability of the current legacy landscape while identifying opportunities to simplify, automate, and modernize the platform over time.
Skills
ERP, WMI, RPG, DB2, Middleware, JDEdwards, AS400, WMS