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Mainframe Systems Administrator Jobs (NOW HIRING)

InterSources

Mainframe Admin

Poughkeepsie, NY · On-site

Mainframe ZOS Admin Location: Poughkeepsie, NY Duration : long term contract Job Summary ... The z/OS System Administrator is responsible for the installation , configuration , maintenance ...

Robert Half

Mainframe Systems SME

Burbank, CA · On-site

$55 - $57/hr

This role is a Mainframe Systems SME for a long-term, muti-year assignment with our client. Responsibilities: Successful candidate will assume the role of Mainframe Systems SME and assist the Project ...

Syntricate Technologies

Mainframe IMS Admin

Plano, TX · On-site

Mainframe IMS Admin Plano, TX Contract * Mainframe IMS Admin L3 * Mainframe Network Admin L3 * IT ... your system. You have received this email as we have your email address shared by you or from one ...

West Advanced Technologies

Mainframe Admin

Downey, CA · On-site

Mainframe Admin Downey, CA 12 months Responsibilities: Provide network architecture guidance and ... Enhance Williams Data Systems (WDS) enterprise monitoring/alerts. Participate in Business ...

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How much do mainframe systems administrator jobs pay per hour?

As of Jun 30, 2026, the average hourly pay for mainframe systems administrator in the United States is $51.13, according to ZipRecruiter salary data. Most workers in this role earn between $46.63 and $64.42 per hour, depending on experience, location, and employer.

What are common career advancement opportunities for Mainframe Systems Administrators?

Mainframe Systems Administrators often begin their careers handling routine maintenance and troubleshooting but can progress to senior administrator roles, systems architect positions, or specialize in performance optimization and security. With experience, there are opportunities to move into management roles such as Mainframe Operations Manager or IT Infrastructure Manager. Mainframe professionals are also valued in industries such as finance, healthcare, and government, where mainframe expertise remains crucial. Continued learning and certifications can help open doors to project leadership or specialized consultancy roles, making this a dynamic career path for those committed to ongoing growth.

What tech jobs pay 400,000 a year?

Mainframe Systems Administrators with extensive experience, specialized skills, and certifications can earn salaries approaching or exceeding $400,000 annually, especially in large organizations or consulting roles. High-paying tech roles often require expertise in legacy systems, advanced troubleshooting, and knowledge of mainframe tools like z/OS, COBOL, and JCL.

Is sysadmin an entry level job?

A Mainframe Systems Administrator role is typically not entry level, as it requires specialized knowledge of mainframe hardware, operating systems, and scripting. Most positions demand several years of experience, relevant certifications, and familiarity with tools like z/OS or IBM Mainframe environments. Entry-level roles in system administration usually involve supporting roles or junior positions with less complex responsibilities.

What are the key skills and qualifications needed to thrive in the Mainframe Systems Administrator position, and why are they important?

A successful Mainframe Systems Administrator typically possesses strong expertise in IBM z/OS or similar operating systems, proficiency in system monitoring, troubleshooting, and maintenance, often backed by a degree in computer science or a related field. Familiarity with mainframe management tools such as JCL, RACF, and various IBM utilities, as well as certifications like IBM Certified System Administrator, are highly valued. Attention to detail, analytical thinking, and effective communication are essential soft skills for managing complex systems and collaborating with technical teams. These competencies are critical for ensuring system reliability, security, and optimal performance in enterprise environments.

Can mainframe be replaced by AI?

Mainframe Systems Administrators manage large-scale, critical computing environments that require high reliability and security. While AI can automate certain tasks like monitoring and troubleshooting, it is unlikely to fully replace the need for skilled administrators due to the complexity and specialized knowledge involved in mainframe management.

What is a Mainframe Systems Administrator job?

A Mainframe Systems Administrator is responsible for managing, maintaining, and optimizing mainframe computer systems that support critical business applications. They install, configure, and upgrade mainframe hardware and software, ensuring system reliability, security, and performance. Typical duties include monitoring system operations, troubleshooting technical issues, applying patches or updates, and coordinating with development and security teams. They also implement backup and recovery procedures to prevent data loss and downtime. This role is essential for organizations that rely on mainframe technology for high-volume transaction processing and large-scale data management.

What does a mainframe administrator do?

A mainframe systems administrator manages and maintains large-scale mainframe computer systems used by organizations for critical applications. They install, configure, monitor, and troubleshoot mainframe hardware and software, ensuring system security, performance, and availability. Proficiency in tools like z/OS and knowledge of scripting languages are often required for this role.
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Mainframe Systems Administrator jobs near you
Infographic showing various Mainframe Systems Administrator job openings in the United States as of June 2026, with employment types broken down into 1% Internship, 44% Full Time, 6% Part Time, 3% Temporary, 42% Contract, and 4% Nights. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution, with an average salary of $106,357 per year, or $51.1 per hour.
Mainframe Admin

Mainframe Admin

InterSources

Poughkeepsie, NY • On-site

Other

Posted 27 days ago

Key responsibilities

  • Oversee the installation, upgrade, configuration, and maintenance of the z/OS operating system and supporting software.

  • Monitor and tune system performance to ensure 24x7 operational stability.

  • Manage user access and security using RACF and coordinate elevated access provisioning for new staff and contractors.

Job description

Job Title: Mainframe ZOS Admin
Location: Poughkeepsie, NY
Duration : long term contract
Job Summary:
The z/OS System Administrator is responsible for the installation, configuration, maintenance, and optimization of the IBM z/OS operating system and associated subsystems. This role ensures the high availability, security, and performance of the mainframe environment, supporting business-critical applications and services. The administrator works closely with developers, operators, and other IT staff to support and enhance the mainframe ecosystem.
Key Responsibilities:
  • Oversee the installation, upgrade, configuration, and maintenance of the z/OS operating system and supporting software.
  • Monitor and tune system performance to ensure 24x7 operational stability.
  • Maintain expertise in z/OS utilities and tools including HCD, SMP/E, RACF, TCP/IP, SMTP, FTP, DFDSS, DSF, SMS, Infoprint, TLS, and VTAM.
  • Support TSO, JCL, and ISPF environments; provide assistance to developers and operators on access or job execution issues.
  • Manage user access and security using RACF and coordinate elevated access provisioning for new staff and contractors.
  • Administer hardware configurations through HMC, DS8910, and Luminex VTL subsystems.
  • Support OEM software such as OPS/MVS (alert management), Zeke job scheduler, and Zara tape management system.
  • Collaborate with programmers on debugging job abends and other mainframe-related issues.
  • Maintain server pack knowledge and perform software installations and upgrades.
  • Implement and support consistent environments across development, staging, testing, and production.
  • Identify and resolve system/process deficiencies and suggest optimizations.
  • Support change management by ensuring the latest application releases are implemented with minimal disruption.
  • Create, update, and maintain system and user documentation and training materials.
  • Contribute to annual updates of the Disaster Recovery Support Manual.
  • Participate in a 24x7 on-call rotation with other mainframe team members to ensure continuous support and system availability.
Qualifications:
  • Bachelor's degree in Computer Science, Information Systems, or related field, or equivalent experience.
  • 5+ years of experience in z/OS system administration.
  • Strong knowledge of mainframe architecture, subsystems, and utilities.
  • Proficient in TSO/ISPF, JCL, and system monitoring tools.
  • Experience with RACF security and user management.
  • Familiarity with job scheduling and automation tools (e.g., Zeke).
  • Experience supporting hardware configurations via HMC and mainframe storage/tape systems.
  • Ability to diagnose complex system issues and implement corrective actions quickly.
  • Excellent communication and documentation skills.
  • Strong problem-solving skills with the ability to work independently and in a team.
  • Availability to provide 24x7 support on a rotating basis.
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About InterSources

Sourced by ZipRecruiter

In 2007, Our journey began as pioneers in the realm of technology and security. Since then, InterSources Inc. has evolved into a trusted partner, leading the way in Cloud Security, Cybersecurity, PLG Consulting, Digital Transformation, and Professional Services. With a rich history of excellence and a forward-thinking approach, we continue to secure your digital future and drive innovation. Explore our legacy of success and discover the possibilities that lie ahead.

Company size

51 - 200 Employees

Headquarters location

Fremont, CA, US

Year founded

2007

Social media

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