Mainframe Developer Jacksonville, FL
ESRhealthcareJacksonville, Florida, United States
Posted January 30, 2026
Full Time
About the Company
ESRhealthcare is a staffing firm that connects qualified professionals with executive, healthcare, and IT positions. They provide executive, medical, IT, and special staffing placements, leveraging a broad network of partners to source real job opportunities. Candidates undergo rigorous pre‑screening to ensure optimal matches, and the firm maintains strict confidentiality by submitting personal data only after client approval. ESRhealthcare’s proactive communication and 24/7 availability keep candidates informed throughout the search, while they avoid contacting current employers, focusing on references once a suitable role is identified.
Job Description
We are seeking a Mainframe Developer to support and enhance business applications on IBM z/OS, analyze business requirements, and develop and maintain programs using Cobol, JCL, DB2, Files, and IMS DB/DC.
Requirements
- Support and enhance Business applications on IBM z/OS
- Analyze Business Requirements and convert them into Technical design documents
- Develop and maintain programs using Cobol, JCL, DB2, Files, and IMS DB/DC
- Work on Application Changes, Performance Improvements and Data Analysis
- Perform coding, unit testing, debugging and production incident support.
- Collaborate with Business Analysts, QA and Cross functional teams to deliver solutions
- Provide clear communication on progress, risks and technical options
- Participate in Team oriented delivery. Ensuring quality and timely outputs.
- Document Solutions, follow coding standards and support knowledge sharing,