COBOL NaturalONE JCL VSAM Mainframe Services Financial Accounting Systems Developer

Job overview

The COBOL NaturalONE JCL VSAM Mainframe Services Financial Accounting Systems Developer role is fully remote for candidates residing in the lower 48 states and able to work Eastern time zone hours; compensation is not specified. The role supports the State Treasurer’s Office mainframe accounting platform through COOLSOFT. The developer extends a legacy financial system to support composite reservoir accounts while preserving accurate posting, settlement, accrual, reporting, and reconciliation. The work includes tracing existing logic, implementing batch processing, testing results, and documenting changes so the accounting and support teams can operate the new functionality reliably.

What you'll do

• Analyze existing account-master, posting, and balance-maintenance programs
• design and code composite reservoir account functionality
• modify COBOL batch programs and JCL and extend nightly and month-end cycles
• add audit-trail, exception-reporting, and reconciliation controls
• create test data and unit and regression test packs
• compare parallel-run results and investigate differences
• support implementation, account conversion, and early production runs
• update program documentation, data-flow notes, and runbooks
• provide on-call coverage during initial cycles.

What we're looking for

Skills & competencies

cobol developer

naturalone

jcl

vsam

mainframe

remote - lower 48 states

coolsoft

financial accounting systems

adabas

batch processing

reconciliation

on-call coverage

Work arrangement

• Weekend coverage required

Why this role

Six-month contract; on-call coverage is required during initial production cycles; candidates must reside in the lower 48 states and work Eastern time zone hours.

About the employer

COOLSOFT is hiring for this role. Industry: Computer Systems Design Services. Sector: 54.