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Job Description Summary:

Rocket Software is seeking a Mainframe Engineer to join the zAssure Security
Portfolio team. This role focuses on deep system-level engineering, security
analysis, and advanced diagnostics within z/OS environments.

This is a highly specialized role requiring strong expertise in z/OS internals,
HLASM (Assembler), and system-level debugging. The role combines product
engineering with complex troubleshooting and customer-facing escalation support,
making it critical to the success of our security solutions.

The ideal candidate brings hands-on experience working with low-level system
constructs, the ability to diagnose complex production issues, and a robust
ownership mindset.

Key Responsibilities
Design, develop, and maintain HLASM-based components for z/OS security and
system tooling (VAP and related products)
Diagnose complex issues using z/OS diagnostic tools (including GTF traces)
Analyze APF-authorized programs, SVCs, PC routines, and system behavior




Perform deep root cause analysis for performance, system failures, and
security exposures
Work with JCL, ISPF, SDSF, and system utilities to debug and validate
behavior
Collaborate with engineering and support teams on L3 escalations and product
fixes
Contribute to tooling, automation, and modernization efforts
Apply modern development practices (Git, AI-assisted debugging/workflows)

Required Qualifications
Minimum 10 years of experience in z/OS environments
Strong expertise in: HLASM (Assembler) z/OS internals (mandatory)
Hands-on experience with: JCL, ISPF, SDSF Batch job debugging and system
diagnostics
Proven experience in: Collecting and analyzing GTF traces (required)
Debugging low-level system issues
Solid understanding of: APF authorization, SVC, PC, memory and execution
model z/OS security concepts (RACF awareness)
Experience with Git or contemporary version control
Strong p

📌 Software Engineer Iii Pune
🏢 Rocket Companies
📍 Pune