It's fun to work in a company where people truly BELIEVE in what they're doing

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
* Strong understanding of: APF authorization, SVC, PC, memory and execution
model z/OS security concepts (RACF awareness)
* Experience with Git or modern version control
* Strong p

📌 Software Engineer III (Pune)
🏢 Rocket Companies
📍 Pune