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Senior Mainframe Developer (Remote)
Information Technology company
Information Technology company
Jacksonville, FL 32256
W-2 onlyUS ResidentContract676 views
Jacksonville, FL 32256
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Seeking a Mainframe Cobol Developer for a 100% remote position to work on healthcare billing and payment apps.

Mainframe Developers are responsible for the development, programming, and coding of Information Technology solutions within legacy environments. They will engage in all phases of the software development lifecycle which include: gathering and analyzing user/business system requirements, responding to outages and creating application system models. Developers are responsible for documenting detailed system specifications and will participate in evaluating, conducting performance testing, and all planned and unplanned maintenance for both internally developed applications and purchased products. Participate in design meetings and consult with clients to refine, test and debug programs to meet business needs and interact and sometimes direct third party partners in the achievement of business and technology initiatives. Developers are responsible for including IT Controls to protect the confidentiality, integrity, as well as availability of the application and data processed or output by the application.


  • Codes and performs unit and integration testing of software to ensure proper and efficient execution and adherence to business and technical requirements
  • Codes, tests, and debugs new software or makes enhancements to existing software
  • Monitor Batch jobs and On-line performance as part of on call rotation.
  • Support daily user requests
  • Perform preventive system maintenance
  • Performance Tuning for COBOL and DB2 related slowing issues.


  • 5-8 years of IT development/programming/coding professional work experience within legacy development
  • Bachelor’s Degree in Computer Science or Mathematics or relevant work experience
  • 5+ years of development experience in an OOP environment (COBOL & JCL)
  • 5+ years of development experience with DB2
  • Experience in Billing and Payment applications on Mainframe. Health insurance experience is nice to have.
  • Experience with DB2 performance tuning and analysis of systems for design work
  • Experience writing stored procedures from scratch and fine tune the stored procedures
  • Extensive DB2 experience on the applications side with the ability to rewrite programs, perform requirements analysis, turn technical specifications into technical specifications, and code
  • Must have experience gathering/defining functional and technical specifications
  • Excellent skills in project life cycle; analysis and design, development, Unit/System/User Test plan preparation and execution, and implementation
  • Proficiency programming in Java
  • Proficiency programming in mainframe applications; COBOL, JCL, CICS, SQL, DB2, MQSeries, and TSO
  • Hands-on experience on batch and online-transaction-processing (OLTP) applications developed in CICS, Enterprise COBOL, DB2 SQL and Stored Procedures, JCL and VSAM and MQ Series and HTTP protocols on the IBM Mainframes OS/390
  • Experience using Xpediter and FileAid tools is highly desired
  • Experience with DB2 from the applications side, performing analysis, coding, and edits to rewrite existing programs and fine tune the stored procedures.
  • Must have excellent oral and written communication skills

Skill Proficiency Years Experience Percent Used
Production Support