Zos System Programmer

AagatiServe Pvt Ltd; Gurgaon; On-site; INR 2,500,000 - 4,000,000; Full time

Job summary

AagatiServe Pvt Ltd in Gurgaon seeks an experienced Zos System Programmer to maintain and optimize a critical z/OS mainframe environment. You will manage upgrades, performance tuning, and network configurations, while developing automation scripts in REXX, Assembler and JCL.

The role requires 10+ years of hands-on z/OS experience, strong problem-solving skills, and familiarity with SMP/E, WLM, RMF, HCD, and z/OS tools. Workload and security enhancements are key focus areas.

Qualifications

• Bachelor's degree in Computer Science, IT or a related field.
• 10+ years of hands-on z/OS system programming experience.
• Strong knowledge of z/OS upgrades, maintenance, and JES2.
• Experience in SMP/E, WLM, RMF, HCD, and ISV products.
• Proficiency with REXX, Assembler, and JCL for automation.
• Familiarity with VTAM/TCPIP networking and z/OS tools.

Responsibilities

• Perform comprehensive z/OS system programming including work, user, journal and performance management.
• Lead upgrades and ongoing maintenance of the z/OS environment.
• Configure base components (JES2) and troubleshoot high-priority issues.
• Utilize SMP/E for installing, upgrading, and maintaining z/OS and related products.
• Develop and maintain automation scripts using REXX, Assembler and JCL.
• Monitor and optimize z/OS performance and security configurations.
• Collaborate with team members to implement innovative improvements.

Skills

z/OS programming

SMP/E

JES2

REXX

Assembler

JCL

VTAM TCPIP

WLM RMF HCD

ZOSMF

ZOWE

Education

Bachelor's degree in CS/IT

Tools

SMPE

ISV products

ZOSMF

ZOWE

Job description

Join our dynamic team as a Zos System Programmer, where you will play a critical role in maintaining and optimizing our core mainframe infrastructure. We are a leading organization committed to leveraging robust and secure systems to drive our business forward, offering a challenging yet rewarding environment for seasoned professionals.

We are seeking a highly experienced and dedicated Zos System Programmer to manage, maintain, and optimize our critical z/OS mainframe environment. This role involves comprehensive system programming, including upgrades, performance management, network configuration, and troubleshooting, ensuring the stability and efficiency of our core systems.

Responsibilities

• Perform comprehensive z/OS system programming, covering work, user, journal, and performance management.
• Lead and execute z/OS upgrades and ongoing maintenance activities.
• Configure and customize base z/OS components, including JES2.
• Troubleshoot and resolve high-priority and performance-related issues within the z/OS environment.
• Utilize SMP/E for installing, upgrading, customizing, and maintaining z/OS and related IBM/ISV products.
• Implement and maintain secure network configurations, including TCPIP / VTAM and associated network products.
• Develop and maintain automation scripts using REXX, Assembler, and JCL.
• Administer VTAM/TCPIP networks and related parameters.
• Apply planned, Hiper, and Red Alert maintenance, as well as product PTFs.
• Implement security PTFs to ensure system integrity.
• Maintain ACS routines and storage management strategies.
• Proactively monitor z/OS and related software to prevent issues and maximize performance.
• Collaborate with and assist team members in problem-solving and implementing innovative improvements.

Required Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• A minimum of 10 years of hands‑on z/OS system programming experience, including work, user, journal, and performance management.
• Demonstrated strong knowledge in z/OS upgrade and maintenance procedures.
• Extensive experience in configuring and customizing base components, particularly JES2.
• Proven experience operating in a multiple CPU mainframe environment.
• Proficiency in troubleshooting complex high-priority and performance issues within a z/OS environment.
• Strong knowledge and practical experience with SMP/E.
• Good understanding of Workload Manager (WLM), Resource Measurement Facility (RMF), Hardware Configuration Definition (HCD), and various ISV products.
• Experience in the implementation of secure network protocols and maintenance of TCPIP / VTAM and related network products.
• Proficiency in scripting languages such as REXX, Assembler, and JCL.
• Familiarity with VTAM/TCPIP network administration.
• Experience with modern z/OS tools like ZOSMF and/or ZOWE.

Preferred Qualifications

• Experience with end-to-end installation, upgrade, customization, and maintenance of z/OS operating system and related IBM/ISV products through SMPE/non‑SMPE processes.
• Ability to apply various types of maintenance (planned, Hiper, Red Alert) and product PTFs.
• Experience in developing and maintaining REXX and Assembler scripts for system automation.
• Knowledge of maintaining ACS routines and storage management strategies.
• Proactive monitoring and performance tuning expertise for z/OS and associated software.
• A collaborative mindset with the ability to assist team members and drive innovative improvements.