Mainframe Developer

Overview

Hybrid
Depends on Experience
Contract - W2
Contract - 12 Month(s)
75% Travel

Skills

COBOL
BMC Control-M
CICS
Ansible
IBM Assembler
IBM DB2
IBM IMS
JCL
Mainframe
VSAM
z/OS
Endeavour

Job Details

Job Description: Mainframe Developer

Location: Atlanta, GA (Hybrid)

Employment Type: W2 Contract (NO C2C)

Duration: 12+ Months

Position Overview

We are seeking a seasoned Mainframe Developer with expertise in Assembler programming and Endeavour administration, along with strong z/OS system administration skills. The ideal candidate will develop and maintain mission-critical mainframe applications while ensuring system stability, security, and performance.

Key Responsibilities

  • Develop, optimize, and maintain COBOL, JCL, CICS, DB2, and Assembler
  • Write and debug low-level Assembler code for performance-critical modules.
  • Design and manage VSAM, IMS DB, and other mainframe file systems.
  • Support mainframe modernization (e.g., cloud migration, microservices integration).
  • Administer Endeavour for change management, version control, and deployment automation.
  • Manage software lifecycle workflows (promotions, backouts, audits) in Endeavour.
  • Configure and troubleshoot Endeavour rulesets, packages, and environment controls.
  • Ensure compliance with SDLC and IT governance policies via Endeavour.
  • Perform z/OS administration (monitoring, tuning, troubleshooting).
  • Manage RACF security (user access, permissions, audits).
  • Schedule jobs using CA-7, JES2/JES3, or TWS.
  • Apply PTFs (Program Temporary Fixes) and system updates.
  • Monitor performance using SDSF, Omegamon, or Splunk for Mainframe.
  • Work with cross-functional teams on issue resolution and enhancements.
  • Document technical specs, runbooks, and operational procedures.
  • Provide 24/7 on-call support for critical systems (if required).

Required Skills & Experience

  • 13+ years in mainframe development (COBOL, JCL, CICS, DB2, VSAM).
  • Assembler programming (HLASM, z/Architecture).
  • Administering Endeavour (or similar: Changeman, ISPW).
  • Strong z/OS sysadmin skills (RACF, TSO/ISPF, SDSF, job scheduling).
  • Experience with:
    • Debugging tools: Xpediter, Abend-AID, File-AID.
    • Schedulers: CA-7, Control-M, TWS.
    • DevOps for Mainframe: Git, Jenkins, automated deployments.
  • Knowledge of mainframe security (RACF, ACF2, Top Secret).

Preferred Qualifications

  • Endeavour certification or equivalent (Broadcom/CA tools).
  • Experience with Zowe, Ansible for z/OS, or Linux on Z.
  • Exposure to hybrid cloud integrations (AWS/Azure with mainframe).
  • IBM certifications (e.g., z/OS, Assembler, DB2).

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