IBM i (AS400) Developer with COBOL Experience

We are looking for an experienced IBM i (AS/400) Developer with practical COBOL experience to support a legacy modernization project involving COBOL and IBM i runtime functionality.

The initial engagement will focus on a small technical assessment and development pilot. You will review existing documentation and reference examples, clarify the expected behavior, and implement or recreate a limited backend function in an IBM i environment.

What we're looking for

Strong hands-on experience with IBM i / AS400

Practical development experience with COBOL on IBM i (ILE COBOL, COBOL/400, or equivalent)

Good working knowledge of CL / CLP (Control Language)

Solid understanding of core IBM i concepts, including:Libraries

Physical files and file members

Jobs and program execution

File overrides

Experience compiling, debugging, and troubleshooting applications directly on IBM i

Ability to understand existing legacy code and documentation and reproduce the intended system behavior

Ability to work independently when some technical requirements need to be clarified during the assessment

COBOL does not need to be your primary technology, but hands-on experience with COBOL is important for this project. Experience with other legacy technologies or legacy modernization projects is also relevant.

Responsibilities

Review existing IBM i, COBOL, and CL documentation and reference examples

Help clarify the expected behavior and technical requirements of the initial pilot

Implement, modify, or recreate selected backend functionality on IBM i

Work with IBM i libraries, physical files, file members, jobs, and related runtime logic

Compile, debug, and test COBOL and CL programs in an IBM i environment

Validate implemented behavior against available examples and test cases

Identify missing technical information or dependencies required for implementation

Document important assumptions and implementation decisions

Nice to have

Experience with legacy modernization projects

Experience working with or migrating legacy applications to Java or other modern technologies

Experience analyzing existing legacy systems where documentation is incomplete

Experience with other IBM i development technologies

What to expect

This is a focused technical engagement where your ability to understand existing IBM i/COBOL functionality and reproduce its behavior will be more important than experience with a specific modern technology stack.

If you have solid IBM i experience and have worked with COBOL at some point in your career, we would be happy to hear from you.