Mainframe Developer

Overview

On Site
Depends on Experience
Contract - W2
Contract - 12 Month(s)
100% Travel

Skills

CICS
COBOL
JCL
IBM DB2
Mainframe
z/OS
Xpediter
VSAM
OLTP
Assembly Language
Assembler
Endeavour

Job Details

Job Title: Mainframe Developer

Location: Dallas, TX (Onsite)

Employment Type: W2 Only

Duration: 12+ Months

Job Summary:
We are seeking an experienced Mainframe Developer to design, develop, and maintain mission-critical z/OS applications. The ideal candidate will have strong expertise in COBOL, JCL, CICS, and DB2, with experience in modernizing legacy systems and integrating them with contemporary technologies.

Key Responsibilities:

  • Develop, test, and maintain COBOL programs for core business applications
  • Implement CICS online transaction processing systems
  • Develop and maintain DB2 and IMS database structures
  • Design optimized JCL procedures for batch operations with Assembler-level performance tuning
  • Create and manage VSAM file structures
  • Debug complex issues using Assembler dump analysis and mainframe tools
  • Modernize legacy systems with Assembler-to-Java transition strategies
  • Document Assembler macros and system-level programming logic
  • Implement Endeavour-managed promotions across environments
  • Perform debugging and troubleshooting using standard mainframe tools
  • Participate in mainframe modernization initiatives
  • Integrate mainframe applications with APIs and cloud services
  • Collaborate with cross-functional teams on system enhancements
  • Document technical specifications and system changes

Required Skills & Qualifications:

  • 12+ years of hands-on mainframe development experience
  • Strong proficiency in COBOL, JCL, and CICS
  • Experience with DB2 and/or IMS databases
  • Knowledge of VSAM file processing
  • Strong knowledge of DB2/IMS with Assembler interfaces
  • Familiarity with mainframe debugging tools (Xpediter, Abend-AID)
  • Understanding of z/OS operating system fundamentals
  • Experience with mainframe modernization techniques
  • Basic knowledge of DevOps practices for mainframe
  • Strong analytical and problem-solving skills

Nice-to-Have Skills:

  • Experience with Assembler programming
  • Knowledge of Java or Python for hybrid applications
  • Exposure to cloud integration patterns

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