Mainframe System Engineer

Zensar; Hyderabad, Pune District, Bengaluru; Hybrid; INR 2,400,000 - 3,200,000; Full time

Job summary

Zensar is seeking a skilled Mainframe System Engineer to support a major migration and modernization project. You will assess z/OS environments, map dependencies, define migration strategies, and oversee cutover activities across z/OS, CICS, MQ, and related tools.

You will collaborate with cross-functional teams including cloud engineers and application teams, ensuring HA/DR requirements, runbooks, and post-production stabilization are in place. AWS and DevOps knowledge are advantageous.

Qualifications

• 8–12 years of experience in Mainframe Infrastructure Engineering.
• Minimum of 3 years supporting Mainframe Migration or Modernization programs.
• Proficiency 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.

Responsibilities

• 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.

Skills

Mainframe migration

z/OS

CICS

MQ

Connect:Direct

JCL

RMF

SMF

WebSphere Application Server

AWS Cloud

Terraform

Ansible

Python

Tools

CAC/CA SYSVIEW

Job description

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.

Role & responsibilities

• 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.

Preferred candidate profile

• 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.