MAINFRAME SYSTEM ENGINEER

Zensar; India; On-site; INR 1,700,000 - 2,700,000; Full time

Job summary

Zensar is seeking a skilled Mainframe System Engineer to join our team and support a large-scale migration initiative, modernizing our mainframe infrastructure and ensuring a seamless transition with cross-functional teams.

The role emphasizes expertise in IBM z/OS, CICS, MQ, and cloud-aware migration, with exposure to AWS and DevOps tooling. Applicants should have 8–12 years of mainframe experience and a proactive, collaborative mindset.

Qualifications

• 8-12 years of experience in Mainframe Infrastructure Engineering, with at least 3 years supporting Migration or Modernization programs.
• Expertise in IBM z/OS, JES2/JES3, Sysplex, SDSF, TSO/ISPF, RACF, DFSMS, DFHSM, Tape Management, DASD Administration, GDG Management, TCP/IP, VTAM, Enterprise Extender, FTP/SFTP, VTAM/TCPIP, SSL/TLS, IBM MQ, CICS, Connect:Direct, and WebSphere Application Server.
• Experience with SMF, RMF, OMEGAMON, CA SYSVIEW, System Automation, NetView, REXX, JCL, CLIST, Python, and ZOAU is preferred.
• Familiarity with AWS, DevOps Tools, Terraform, and Ansible for migration projects and AWS Blu Age modernization programs.
• Excellent communication and collaboration skills, with the ability to work effectively in a cross-functional team environment.
• Strong problem-solving and analytical skills, with a methodical approach to resolving complex infrastructure issues.
• Experience in managing high-availability production environments, ensuring minimal downtime during migration processes.
• A proactive and self-motivated attitude, with a passion for learning new technologies.

Responsibilities

• Assess the existing z/OS infrastructure and operational environment.
• Inventory and analyze CPCs, LPARs, Sysplex, storage, network, and middleware for migration risks and dependencies.
• Support the definition of migration strategy and target-state infrastructure design.
• Assist in defining HA/DR, backup, and recovery requirements, and develop runbooks and cutover plans.
• Coordinate migration of z/OS, CICS, VSAM, MQ, Connect:Direct, FTP/SFTP, VTAM/TCPIP, and scheduling tools, ensuring configurations are validated.
• Develop operational support documentation, SOPs and monitoring procedures, and conduct knowledge transfer sessions.
• Support Hypercare and post-production stabilization, ensuring a smooth transition of migrated services to AMS/Operations teams.
• Collaborate with infrastructure architects, application teams, middleware specialists, cloud engineers, and business stakeholders.
• Stay updated with mainframe technologies and cloud platforms, especially AWS, to ensure optimal migration strategies.

Skills

Mainframe infrastructures

z/OS

CICS

IBM MQ

JES2/JES3

RACF

TCP/IP

VTAM

DFHSM

DASD Administration

WebSphere Application Server

Python

Terraform

Ansible

Tools

SMF

RMF

OMEGAMON

CA SYSVIEW

System Automation

NetView

ZOAU

GDG Management

Tape Management

Job description

We are looking for a skilled Mainframe System Engineer to join our team and support an exciting migration initiative. The successful candidate will play a crucial role in modernizing our mainframe infrastructure, working closely with various teams to ensure a successful and seamless transition. This role offers an opportunity to work on a large-scale project, utilizing your expertise in mainframe technologies and cloud platforms.

• Conduct a comprehensive assessment of the existing z/OS infrastructure and operational environment.
• Inventory and analyze CPCs, LPARs, Sysplex, storage, network, and middleware components, identifying migration risks and dependencies.
• Support the definition of migration strategy and workload classification, participating in target-state infrastructure design.
• Assist in defining HA/DR, backup, and recovery requirements, and develop migration runbooks and cutover plans.
• Coordinate the migration of z/OS, CICS, VSAM, MQ, Connect:Direct, FTP/SFTP, VTAM/TCPIP, and scheduling tools, ensuring system configurations are validated.
• Develop operational support documentation, including SOPs and monitoring procedures, and conduct knowledge transfer sessions.
• Support Hypercare and post-production stabilization, ensuring a smooth transition of migrated services to AMS/Operations teams.
• Collaborate with infrastructure architects, application teams, middleware specialists, cloud engineers, and business stakeholders throughout the migration process.
• Stay updated with the latest advancements in mainframe technologies and cloud platforms, especially AWS, to ensure optimal migration strategies.

• 8-12 years of experience in Mainframe Infrastructure Engineering, with a minimum of 3 years supporting Mainframe Migration or Modernization programs.
• Strong expertise in IBM z/OS, JES2/JES3, Sysplex, SDSF, TSO/ISPF, RACF, DFSMS, DFHSM, Tape Management, DASD Administration, GDG Management, TCP/IP, VTAM, Enterprise Extender, FTP/SFTP, SSL/TLS, IBM MQ, CICS, Connect:Direct, and WebSphere Application Server.
• Experience with SMF, RMF, OMEGAMON, CA SYSVIEW, System Automation, NetView, REXX, JCL, CLIST, Python, and ZOAU is preferred.
• Familiarity with AWS, DevOps Tools, Terraform, and Ansible is an advantage, especially for Mainframe to AWS migration projects and AWS Blu Age modernization programs.
• Excellent communication and collaboration skills, with the ability to work effectively in a cross-functional team environment.
• Strong problem-solving and analytical skills, with a methodical approach to assessing and resolving complex infrastructure issues.
• Experience in managing high-availability production environments, ensuring minimal downtime during migration processes.
• A proactive and self-motivated attitude, with a passion for staying updated with the latest advancements in mainframe and cloud technologies.
• A proven track record of successful mainframe migration or modernization projects, demonstrating effective planning, execution, and transition strategies.
• A willingness to learn and adapt to new technologies and methodologies, ensuring a smooth and efficient migration process.

At Zensar, we’re
“experience-led everything”. We are committed to conceptualizing, designing, engineering, marketing, and managing digital solutions and experiences for over 130 leading enterprises. We are a company driven by a bold purpose:
Together, we shape experiences for better futures.
ONE with Client - a set of four core values that reflect who we are and how we work:
One Zensar, Nurturing, Empowering, and Client Focus.
Part of the $4.8 billion RPG Group, we’re a community of 10,000+ innovators across 30+ global locations, including Milpitas, Seattle, Princeton, Cape Town, London, Zurich, Singapore, and Mexico City. Explore Life at Zensar and join us to Grow. Own. Achieve. Learn. to be the best version of yourself.
We believe the best work happens when individuality is celebrated, growth is encouraged, and well-being is prioritized.

All qualified applicants will be considered without regard to race, creed, color, ancestry, religion, sex, national origin, citizenship, age, sexual orientation, gender identity, disability, marital status, family medical leave status, or protected veteran status.