Senior Mainframe Systems Programmer - z/OS

The job

LIVE Live feed (private-sector employer) Source: The Muse public API · Data: listed 2026-10-09

Job description

At Ensono, our Purpose is to be a relentless ally, disrupting the status quo and unleashing our clients to Do Great Things! We enable our clients to achieve key business outcomes that reshape how our world runs. As an expert technology adviser and managed service provider with cross-platform certifications, Ensono empowers our clients to keep up with continuous change and embrace innovation.

We can Do Great Things because we have great Associates. The Ensono Core Values unify our diverse talents and are woven into how we do business. These five traits are the key to achieving our purpose.

HONESTY, RELIABILITY, COLLABORATION, CURIOSITY, PASSION

Role Summary

The Senior Mainframe Systems Programmer provides support for on-going projects that require the installation, testing, and implementation of new z/OS operating systems and other 'system' software. Also, the Maintenance and debugging of systems software. Monitoring and tuning of systems software. Functional knowledge, use of z/OS components and detailed knowledge of support products such as tape management, scheduling, security, monitoring systems, and other z/OS supporting systems software. Note: This is not an Applications Programming position.

What You Will Do:

• Participate in On-call Schedule.
• Incident / Problem resolution

• Incident, change and problem handling.

• Configuration and customization.

• Setup of parameters.

• Communication with vendors.

• Participation/contribution to technical projects.

• Solid understanding of z/OS and related product software z/OS.

• PARMLIB configuration and JES2 customization.

• Ability to support in solving problems and implementing changes on z/OS environments.

• Working knowledge of TSO/ISPF, SDSF, JCL.

• Good written and verbal skills.
• Strong analytical and problem-solving skills.

• Minimum of 10+ years of experience within a mainframe environment within a large enterprise or equivalent combination of education and experience

• Bachelor's degree required and/or equivalent work experience

• Knowledge and understanding of z/OS and z/OS installation and maintenance including SMP/E.

• Working knowledge of TSO/ISPF, SDSF, JCL.

• Working knowledge of Unix System Services (USS)

• Working knowledge of Unix System Services (USS) file system management and security

• Ability to work well as a team member.

• Stress resistant in case of Major Incident- and/or emergency situations.

• Good interpersonal, verbal and written communication skills

• Customer Service skills at management level

• Good collaboration and teamwork skills

• Must be self-motivated.

• Strong analytical skills and problem-solving capabilities.

• Good planning and organizational skills.

• Initiative and good learning abilities.

• Ability to perform skill set of a Mainframe System Programmer

• Ability to perform moderately complex ISV installations

• Knowledgeable in z/OS security.

• Knowledgeable in z/OS systems programming functions.

• Understand z/OS services structure, Parallel Sysplex, Catalog management.

• Unlimited Paid Days Off

• Three health plan options

• 401k with company match

• Eligibility for dental, vision, short and long-term disability, life and AD&D coverage, and flexible spending accounts

• Family Forming Benefit including fertility coverage and adoption/surrogacy reimbursement

• Paid childbearing and paternal leave

• Education Reimbursement, Student Loan Assistance or 529 College Funding

• Sabbatical leave

• Wellness program

• Flexible work schedule

Explore around this job

Field: Operations and Management Sub-niche: Program management All jobs at Ensono

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About the role

This is a Senior Level role in the Operations and Management field (Program management) at Ensono. Senior roles usually expect substantial experience, ownership of results and often the ability to guide others.

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The employer

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FAQ

What is the Senior Mainframe Systems Programmer - z/OS job at Ensono?

A senior level role in operations and management (program management) listed 31 days ago. The full description is on this page and on The Muse.

Where is this job?

Remote / flexible (United States). A remote or flexible location is listed; confirm with the employer which states are accepted.

How do I apply?

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How much does it pay?

The listing does not publish pay, and we could not match the title to one official occupation.

What is the cost of living there?

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How old is this listing?

It was posted on 2026-10-09 (31 days ago). Jobs older than 90 days are not shown.

Are there similar jobs?

Yes: browse program management jobs in the United States.

Sources and terms

• Job data: The Muse public API (listing dated 2026-10-09). The job disappears from this site when it disappears from the source.
• Wages and projections: BLS OEWS (May 2025) and Employment Projections 2025–35.
• City and county figures: Census Bureau ACS 2020–2024, BEA, BLS QCEW and LAUS, NASA POWER climatology; distances from Census Gazetteer coordinates.

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Sources

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• Census Bureau American Community Survey (via Census Reporter)
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