Lead AS400 / WebSphere EDI Developer

ZipStaff•Newark, NJ

1d•Onsite

About The Position

ZipStaff is seeking a hands-on lead developer to own the AS400 core and WebSphere EDI integrations at a major port and terminal operator. The role focuses on reverse-engineering RPG and CL, maintaining WebSphere MQ, Integration Bus, and B2B for EDI with shipping lines, customs, rail, and trucking, and building APIs that connect the AS400 to modern port tools. This is a hands-on lead position, not a coordinator role. The position is an on-site W2 contract in Newark, New Jersey, with no C2C or 1099 arrangements. The developer will map business rules, data structures, and workflows; maintain and expand IBM WebSphere middleware for automated EDI; develop and update maritime and logistics EDI maps; troubleshoot production transmissions, translations, spool, and batch jobs; and connect AS400 systems to modern web and SaaS tools. The role also includes documenting legacy business logic, schemas, architecture, and WebSphere routing paths. Applicants must be legally authorized to work in the United States without sponsorship now or in the future. Applications should highlight RPG/CL systems maintained, WebSphere EDI maps built, and supported transaction sets. Generic Java or middleware experience without AS400 and EDI experience will not be considered.

Requirements

At least 8 years of hands-on IBM i / AS400 development with RPG and CL.
Experience with IBM WebSphere middleware: MQ, Integration Bus, or B2B.
EDI mapping and translation experience, including maritime or logistics transaction sets 210, 214, 301, 310, 322, 850, and 856.
Experience with DB2 on AS400.
Production troubleshooting experience with failed EDI transmissions, spool, and batch jobs.
REST or SOAP API design and database connector experience.
Ability to work on-site in Newark, New Jersey.
Must be legally authorized to work in the United States without sponsorship now or in the future.

Nice To Haves

Experience in the port, terminal, shipping, or logistics domain.
Experience with system modernization from AS400 to web or SaaS.
Experience documenting undocumented legacy systems.

Responsibilities

Reverse-engineer homegrown RPG/CL programs and DB2 tables to map business rules, data structures, and workflows.
Maintain, configure, and expand IBM WebSphere middleware, including MQ, Integration Bus, and B2B, for automated EDI.
Develop and update maps for maritime and logistics EDI transaction sets 210, 214, 301, 310, 322, 850, and 856.
Troubleshoot failed EDI transmissions and translations, spool and batch jobs, and apply emergency fixes.
Design REST/SOAP APIs, WebSphere messaging channels, and database connectors between the AS400 and modern web and SaaS tools.
Document undocumented business logic, schemas, architecture, and WebSphere routing paths.