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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 robust 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 strong 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 pro

📌 Software Engineer III (Pune)
🏢 Rocket Software Development India
📍 Pune