Octans Group LLC
Octans Group LLCVerified Source

Mainframe Assembler Developer with HLASM & Sysplex Experience

Onsite · Dallas, Texas
Posted August 12, 2026
payroll

Overview

Develop and maintain mission-critical mainframe applications in HLASM within a parallel sysplex environment. You will own production support and new feature development for a financial services client, collaborating with a team of mainframe engineers. This role stands out for its focus on connect:direct and CA7 scheduling, offering deep technical challenges and the flexibility of relocation to TX or NC.

What You'll Do8

  • 1Design and code HLASM programs to support financial transaction processing and reporting.
  • 2Debug and resolve production issues in JCL, TSO/ISPF, and VSAM environments.
  • 3Modify and maintain batch jobs scheduled through CA7, ensuring timely execution and monitoring.
  • 4Implement changes using ISPW and manage code deployments across test and production regions.
  • 5Troubleshoot and fix Connect:Direct (NDM) file transfers and error recovery processes.
  • 6Collaborate with teams to optimize batch windows and improve system reliability.
  • 7Document and enforce change management procedures for mainframe applications.
  • 8Provide on-call support for critical batch cycles and production incidents.

Requirements7

  • 15+ years of experience in IBM mainframe development and production support, specifically with HLASM.
  • 2Strong hands-on expertise in JCL, TSO/ISPF, and VSAM.
  • 3Experience with CA7 job scheduling and batch processing systems.
  • 4Hands-on experience with Connect:Direct (NDM) file transfer and error resolution.
  • 5Proficiency with ISPW and change management tools.
  • 6Experience in financial services domain and parallel sysplex environments is preferred.
  • 7Bachelor's degree in Computer Science, Information Systems, or equivalent work experience.

Salary Insight

Salary not disclosed in listing

Location

Typeonsite
LocationDallas, Texas

Required Skills

HLASMJCLTSO/ISPFCA7VSAMGDGsConnect:Direct (NDM)ISPWchange management toolsbatch processing systemsIBM Mainframe application developmentproduction support
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