Job Description
Job Title: Programmer – Advanced (Mainframe Developer – Composite Reservoir Accounts) (14311)
Location: Columbia, SC 100% Remote
Duration: 6 Months (Possible Extension)
Interview: 1–2 Rounds of Virtual Interviews
Required Skills
Candidates should be prepared to demonstrate hands-on experience with:
Location: Columbia, SC 100% Remote
Duration: 6 Months (Possible Extension)
Interview: 1–2 Rounds of Virtual Interviews
Required Skills
- 5+ years of Enterprise COBOL development experience in a z/OS environment.
- 5+ years of experience with NaturalOne.
- 5+ years of JCL development and production support experience.
- 3+ years of financial/accounting systems development or support, including double-entry posting, balance/accrual maintenance, value dating, reconciliation, and month-end closeouts in a regulated environment.
- 3+ years of experience working with Adabas and VSAM.
- 3+ years of experience tracing undocumented legacy logic through copybooks, call chains, and job streams.
- Experience with cash management, account pooling, sweeps, or treasury applications.
- Experience with CA-7 scheduling and batch operations.
- Experience with REXX, Python, or Java.
- Experience integrating COBOL and Natural applications using z/OS Connect, IBM MQ, or REST services.
- Knowledge of CLIST scripting, batch performance tuning, and data migration.
- Analyze existing COBOL programs, account master files, posting processes, and balance-maintenance logic to identify required enhancements.
- Design and develop Composite Reservoir Accounts, including account structures, participant linkage, cash sweeps, reverse sweeps, and interest allocation.
- Enhance COBOL batch programs, Natural applications, and JCL to support nightly and month-end financial processing.
- Implement accurate financial posting, balance calculations, accrual processing, reconciliation, and audit controls.
- Troubleshoot existing mainframe applications by tracing COBOL copybooks, program call chains, and JCL job streams.
- Develop test data and perform unit testing, regression testing, and parallel-run validation against existing production results.
- Investigate processing discrepancies and ensure financial accuracy without affecting existing account balances.
- Support production deployment, account conversion, batch execution, and post-implementation troubleshooting.
- Maintain technical documentation, data-flow diagrams, operational runbooks, and change-control records.
Candidates should be prepared to demonstrate hands-on experience with:
- COBOL / z/OS: Enterprise COBOL batch and online processing, legacy application enhancements, and production troubleshooting.
- NaturalOne / Natural / Adabas: Natural programs, subprograms, maps, DDMs, descriptors, superdescriptors, development, debugging, and deployment.
- JCL / Mainframe Operations: JCL, PROCs, GDGs, SORT utilities, restart/rerun procedures, and TSO/ISPF.
- Financial Systems: Double-entry accounting, accruals, value dating, account balances, reconciliation, and month-end close.
- Legacy System Analysis: Reverse-engineering undocumented logic and assessing downstream impacts of production changes.
Numbers & Facts
| Location | Columbia, SC (Remote) |
| Industry | Computer/IT Services |
| Company Size | 100 to 499 employees |
| Year Founded | 2007 |
| Website | https://www.intersourcesinc.com/ |
About Company
It’s all about harnessing the real power of data. InterSources Inc was founded in 2007 providing intelligent data solutions to clients across industries and geographies.
Over the years, we have built products on Business Intelligence & Big Data platform simplifying and transforming the way business intelligence and real-time data analytics empower Corporations and end-users using Softwares like Tableau, Business Objects, MicroStrategy, etc.
In the process, we have enabled companies to use data analytics to help better understand, predict and influence consumer behavior, identify new market opportunities as they emerge, provide to users the data they need, alert the user when and why key business metrics have changed and enable them to make smart decisions.
Skills
Level up your application
Professional resume templates
Browse dozens of recruiter approved resume templates, layouts and formats. Choose your favorite and make it your own in minutes.
Free resume templatesResume Builder
Improve your existing resume or start from scratch and create a standout, ATS-friendly resume. Add job-specific content, download and apply.
Resume Builder