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# Mainframe Developer (Remote)

- **Company:** T M FLOYD & CO
- **Location:** United States (Remote available)
- **Experience:** Experienced
- **Salary:** $137,000 - $145,000
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Adaptable Database Systems, Software Documentation, Data Flow Control, Job Control Language (JCL), Rexx (Programming Language), Python (Programming Language), Regression Testing, Test Data, Virtual Storage Access Methods
- **Published:** November 14, 2026
- **Apply:** https://www2.jobdiva.com/candidates/myjobs/openjob_outside.jsp?a=jkjdnwgg6ps3uqzpkj4uetmcsryqb6027duusc37ikj0ldwe09fise51ub2xzlr0&from=COMP&id=29624745&SearchString=&StatesString=

## About the Role

* 5 years of experience with:
 + Enterprise COBOL development experience in a z/OS environment
 + NaturalOne
 * 3 years of experience with:
 + JCL development and production support
 + Financial/accounting systems development or support, including double-entry posting, balance/accrual maintenance, value dating, reconciliation, and month-end closeouts in a regulated environment
 + Adabas and VSAM
 + Tracing undocumented logic through copybooks, call chains, and job streams, + Cash management, account pooling, sweeps, or treasury applications
 + CA-7 scheduling and batch operations
 + REXX, Python, or Java

## Description

* Analyze the current account master, posting, and balance-maintenance programs to establish where composite reservoir accounts must be recognized, and document what you find
 * Design and code the new account type end to end: master file and table structures, account opening and closing, participant linkage, sweep and reverse-sweep logic, allocation and interest apportionment, and closing balance derivation
 * Modify batch COBOL programs and JCL and extend the nightly and month-end cycles to include the new processing without lengthening the batch window beyond agreed limits
 * Add new CRAs to the audit trail, exception reporting, and reconciliation controls the new function requires, working with accounting stakeholders on what must be evidenced
 * Produce test data, unit and regression test packs, and parallel-run comparisons against current production output; investigate every difference until it is explained
 * Support implementation, conversion of any in-scope existing accounts, and early-life production runs, including on-call cover during the first cycles
 * Leave behind program documentation, data-flow notes, and runbook updates that the support team can work from