Tata Consultancy Services · 17 hours ago
Mainframe z/OS Engineer
Atlanta, GA
Full-time
Onsite
Mid, Senior Level
$100K/yr - $130K/yrTata Consultancy Services is seeking a Mainframe z/OS Engineer to manage and support z/OS operating systems. The role involves planning upgrades, monitoring system performance, and collaborating with vendors to ensure system integrity and optimal resource utilization.
Business Information SystemsConsultingInformation TechnologyIT Management
Responsibilities
Plan, prepare, and execute z/OS operating system upgrades
Apply IBM PTFs and APARs to maintain system integrity and resolve reported issues
Monitor z/OS system health, performance, and resource utilization using tools like RMF, SMF, TMON and SAS
Install, configure, upgrade, and maintain a wide range of ISV products (e.g., Broadcom/CA, BMC, IBM, Rocket Software, etc.)
Have good understanding and experience on Hardware Configuration Definitions / IOCP and HMC Management and WLM management
Collaborate with vendors for problem resolution, licensing, and technical support
Ensure compatibility and integration of ISV products with the z/OS environment
Manage and maintain critical system datasets (e.g., SYSRES, Page datasets, SMF datasets)
Provide expert-level support for mainframe incidents, including problem determination, diagnosis, and resolution in a timely manner
Analyze system performance data to identify bottlenecks and recommend improvements
Tune various z/OS components, WLM (Workload Manager), and ISV products to optimize resource utilization and application performance
Support DR planning, setup, IPL testing, replication technologies (e.g., GDPS), and DR event execution
Analyze system logs, sysout, dumps, and diagnostic data for complex issues
Participate in on-call rotation for 24/7 support of critical systems
Qualification
Required
In-depth knowledge and hands-on experience with z/OS operating system installation, configuration, and maintenance
Proven experience with major z/OS upgrades
Strong proficiency in JCL, TSO/ISPF, SMP/E, JES2/JES3 Administration
Sysplex concepts (Parallel Sysplex, Coupling Facility, XCF)
Extensive experience with the installation and support of various ISV products from vendors such as Broadcom/CA, BMC, IBM, and Rocket Software
Knowledge of z/OSMF and modernization initiatives
WLM configuration and tuning
BACHELOR OF COMPUTER SCIENCE
Company
Tata Consultancy Services
Tata Consultancy Services is a business solutions company that specializes on information technology services and consulting.
Founded in 1968
10001+ employees
H1B Sponsorship
Tata Consultancy Services has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
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Trends of Total Sponsorships
2025 (7880)
2024 (9690)
2023 (8537)
2022 (11159)
2021 (9813)
2020 (11984)
Funding
Current Stage
Public CompanyTotal Funding
unknown2004-08-25IPO
Leadership Team
K. Krithivasan
Chief Executive Officer & Managing Director
Aarthi Subramanian
President and Chief Operating Officer
Recent News
2026-01-25
Business Standard India
2026-01-25
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