Mainframe programmer Jobs in Houston, TX

Senior Systems Programmer – Mainframe Support (Full-Time, Exempt)

Onsite : League City South Houston TX

Hours : Monday–Friday, 8 : 00 AM–4 : 30 PM + On-Call Rotation

Our client is an industry-leading organization is looking for a Senior Systems Programmer with deep expertise in Mainframe Support, Z / OS Systems Programming, and Enterprise Storage Administration . This is a high-impact role supporting mission-critical infrastructure across a large, stable environment.

If you're a seasoned mainframe professional who thrives in complex technical landscapes—solving problems, optimizing performance, and delivering high availability—this opportunity checks all the boxes.

Top Technologies :

Mainframe programmer, Z / OS systems programmer, mainframe support, storage administration, SMS, HSM, DS8000, TS7700, enterprise storage, mainframe engineer, FDR, tape management, ServiceNow, mainframe upgrades, Z / OS tuning, mainframe jobs, senior systems programmer.

Key Responsibilities

Lead mainframe storage administration including SMS, HSM, DS8000, TS7700, tape systems, allocation, DR, and backup / recovery

Manage tickets, incidents, and escalations in ServiceNow

Perform upgrades, installations, and tuning for Z / OS and third-party mainframe tools

Troubleshoot performance issues and conduct root cause analysis in large-scale environments

Collaborate with cross-functional teams—application programmers, infrastructure engineers, platform architects, and operations

Support critical workloads in a high-uptime, enterprise environment

Required Experience & Technical Skills

Proven experience as a Mainframe Systems Programmer or Senior Z / OS Programmer

Strong background in mainframe storage administration , including SMS / HSM

Expertise with DS8000, TS7700 , and enterprise-class storage systems

Hands-on experience with FDR, tape services, backup and recovery solutions

Ability to support on-call rotation in a 24 / 7 production environment

Strong problem-solving skills and the ability to handle complex escalations

Why This Role Stands Out

If you’re searching for a stable, long-term home where your mainframe expertise is recognized and valued, look no further. This organization offers :

Competitive Benefits

Medical, dental, and vision coverage

Company-paid basic life insurance

401(k) with employer contributions

Generous PTO bank + paid holidays

Relocation assistance

Casual dress code and flexible work culture

Strong Culture & Career Growth

Supportive, people-first leadership

Emphasis on work-life balance

Clear career pathways and professional development

Stable, well-funded environment with long-term job security

Collaborative team environment where your expertise influences real decisions

Work Environment

You’ll be part of a high-performing infrastructure and mainframe engineering group supporting large-scale Z / OS environments. This is a role where technical mastery, initiative, and problem-solving are rewarded.

Equal Opportunity

This employer is committed to creating an inclusive, equitable workplace and provides reasonable accommodations upon request.