Demo

Mainframe Developer

KaashTech LLC
Chicago, IL Contractor
POSTED ON 5/28/2026
AVAILABLE BEFORE 6/27/2026

We are seeking experienced technical professionals to provide development, production support, and deep diagnostic expertise for a large, mission-critical legacy commercial loan accounting platform. This highly customized system is based on Level 3 from AFS, built in COBOL and operating through a 3270 interface, with extensive online transaction processing via CICS and a complex VSAM master file architecture.

Required Skills & Qualifications

  • Strong expertise in COBOL, JCL, CICS, VSAM, DB2.
  • Experience with CA7 scheduling and large-scale batch environments.
  • Hands-on knowledge of CICS Web Services (CWSDirect) and MQ messaging.
  • Proven ability to support and troubleshoot mission-critical financial applications.
  • Strong diagnostic and problem-solving skills in complex mainframe environments.
  • Excellent written and verbal communication skills for cross-team collaboration.

Hourly Wage Estimation for Mainframe Developer in Chicago, IL
$36.00 to $48.00
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