We are seeking an experienced Enterprise COBOL / NaturalOne Developer with strong hands-on expertise in mainframe development, z/OS, JCL, Natural, and Adabas. The ideal candidate will have experience supporting and enhancing enterprise financial and accounting systems, analyzing complex legacy applications, and maintaining mission-critical batch and online processes in a regulated environment. Required Skills & Qualifications 5+ years of hands-on experience in Enterprise COBOL development in a z/OS mainframe environment. 5+ years of experience with NaturalOne (Software AG) development environment. 3+ years of experience in JCL development, debugging, and production support. 3+ years of experience with financial or accounting systems, including double-entry posting, balance and accrual maintenance, value dating, reconciliation, and month-end close processes. 3+ years of hands-on experience working with Adabas and VSAM databases and file systems. 3+ years of experience analyzing legacy applications and tracing undocumented business logic through copybooks, program call chains, and job streams.