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Mainframe Developer - z/OS

Vastika Inc
8 - 12 Years
Anywhere in India/Multiple Locations

Posted on: 16/07/2026

Job Description

Job Description:

We are looking for an experienced Mainframe Developer with deep expertise in IBM z/OS environments, system programming, and enterprise mainframe infrastructure. The ideal candidate should have strong experience with z/OS internals, catalog management, system installation, troubleshooting, and performance optimization.

Key Responsibilities:

- Develop, enhance, and support enterprise applications and system utilities on IBM z/OS platforms.

- Perform system-level analysis, troubleshooting, and root cause analysis for complex mainframe issues.

- Manage and maintain z/OS catalog structures, datasets, and storage-related configurations.

- Install, configure, upgrade, and maintain z/OS and third-party (ISV) software products.

- Administer and support UNIX System Services (USS/OMVS), including security and access management.

- Design and execute functional, integration, performance, and robustness testing for mainframe applications and system components.

- Monitor system health, performance, and resource utilization, implementing optimizations where required.

- Collaborate with infrastructure, storage, security, and application teams to ensure system stability and high availability.

- Prepare technical documentation, operational procedures, and implementation guides.

- Support production deployments, incident resolution, and continuous improvement initiatives.

Required Skills:

- 812 years of experience in IBM Mainframe development, system programming, or platform engineering.

- Deep expertise in IBM z/OS internals and system architecture.

- Strong hands-on experience with z/OS Catalog Management.

- Proficiency in UNIX System Services (USS/OMVS) administration and security.

- Experience installing, configuring, and maintaining z/OS and third-party (ISV) software.

- Strong troubleshooting, debugging, and root cause analysis skills.

- Experience designing and executing functional, performance, and system-level testing.

- Good understanding of mainframe security, storage, and system performance tuning.

- Strong analytical, documentation, and communication skills.

Preferred Skills:

- Experience with JCL, REXX, ISPF, SMP/E, RACF, and IBM utilities.

- Knowledge of DB2, CICS, IMS, or MQ is an advantage.

- Familiarity with automation, monitoring, and capacity planning tools.

- Experience working in large enterprise or financial services environments.

Education (Mandatory):

- Full-time B.E./B.Tech, MCA, M.Tech, MS, or M.Sc in Computer Science, Information Technology, or a related discipline.

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