Mainframe Z / OS

For over 16 years, Trilyon has been a leader in global workforce solutions, specializing in Cloud Technology, AI / ML, Software Development, Technical Writing, and Digital Transformation. We partner with top companies to deliver high-quality talent in engineering, IT, and emerging technologies.

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We are seeking an experienced Mainframe Z / OS professional to join our team. This role will involve managing, upgrading, and supporting complex mainframe environments, ensuring high availability, performance, and adherence to SLAs. The ideal candidate will have deep expertise in z / OS system programming, mainframe migrations, LPAR / MIPS management, and backup / recovery operations , with a passion for maintaining enterprise-level mainframe systems.

Job Title : Mainframe Z / OS

Location : Plano, TX 75024 (On-site)

Duration : 6 Months

Job Description

As a Mainframe Z / OS professional, you will be responsible for supporting and upgrading mainframe systems, handling incidents and service requests, and collaborating with vendor partners to optimize operations. The Mainframe Z / OS role requires strong technical knowledge of system programming, tool upgrades, datacenter migrations, and mainframe administration to ensure robust, high-performing environments.

Key Responsibilities

Perform z / OS version upgrades (v2.4, v2.5, v3.1) and support related system modifications.

Upgrade and maintain enterprise tools such as Omegamon Suite, IBM TWS, System Automation, Tivoli, and NetView .

Manage and configure LPARs and MIPS , including performance tuning, capacity planning, and remote administration.

Support mainframe migrations, datacenter moves, and LPAR / MIPS design .

Execute backup and restore operations to and from tape, ensuring system integrity and disaster recovery readiness.

Troubleshoot incidents and service requests within complex mainframe environments.

Collaborate with vendor partners to meet agreed-upon SLAs, improve reporting, and optimize operational policies and procedures.

Maintain documentation for system upgrades, restores, migrations, and operational procedures.

Monitor and manage capacity and performance metrics to ensure optimal mainframe performance.

Provide expert guidance on mainframe configuration, automation, and tool migration projects .

Essential Skills

Experience in Mainframe z / OS system programming and administration .

Expertise in mainframe upgrades and tool migration (Omegamon, IBM TWS, System Automation, Tivoli, NetView).

Knowledge of LPAR / MIPS management, performance tuning, and remote administration .

Experience in mainframe backup, restore, and disaster recovery operations .

Ability to manage complex system migrations and datacenter operations .

Strong troubleshooting and analytical skills in mainframe environments.

Excellent collaboration skills with vendor partners and internal teams .

Educational Background

Graduate in Computer Science, Information Technology, or a related field .

Keywords

Mainframe z / OS System Programmer, Mainframe System Programmer, z / OS System Administrator, MVS System Programmer, LPAR Management, MIPS Administration, Omegamon, IBM TWS, System Automation

Why Join Us?

Trilyon, Inc. offers a comprehensive benefits package.

Opportunities for growth and professional development.

Collaborative and inclusive company culture.

Equal Employment Opportunity (EEO) Statement

Trilyon, Inc. is an Equal Opportunity Employer committed to diversity, equity, and inclusion. We do not discriminate based on race, color, religion, gender, gender identity, sexual orientation, national origin, age, disability, veteran status, or any other protected status under applicable laws. Our diverse team drives innovation, competitiveness, and creativity, enhancing our ability to effectively serve our clients and communities. This commitment to diversity makes us stronger and more adaptable.