Mainframe Administrator; DW

Arlington, United States | Posted on 11/19/2025

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+++ This position is not currently open but is on awarded contract.
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Datawiz, a GTSC company, seeking a highly experienced and motivated Mainframe Systems Administrator to lead technical support and management for IBM z/OS mainframe-based solutions. This position requires a deep understanding of mainframe operations, system integration, and advanced troubleshooting capabilities. The ideal candidate will have a blend of technical expertise, strong communication skills, and experience in financial services or similar environments.

• Provide senior-level technical support for IBM z/OS mainframe systems, including installation, implementation, administration, and maintenance.
• Perform problem determination and resolution, including system dump analysis and root cause identification for outages and system issues.

• Collaborate with team members and vendors to capture and analyze system dumps, apply system fixes and patches, and coordinate testing and roll-out of new system versions.

• Install, maintain, and customize operating systems and third-party ISV system software.
• Configure, debug, and maintain TCPIP and VTAM subsystem configurations.
• Prepare and install system software, adhering to vendor and site-specific installation protocols.
• Participate in the installation, implementation, and performance testing of IBM z/OS Parallel Sysplex systems, including shared and cluster queues.
• Manage LPAR environments and ensure the reliability and integrity of large-scale systems.

• Work closely with technical teams, internal stakeholders, and vendor support to ensure seamless roll‑out of new systems and solutions.
• Effectively communicate technical issues and solutions with staff, customers, and other IT personnel at all levels.

• Education and Experience:
  • BA/BS in Computer Science, Engineering, or an equivalent combination of education or experience.
  • Six or more years of experience in mainframe operations management, including TCPIP and VTAM configuration and debugging.
• Technical
  
  Skills:
  
  
  • Advanced knowledge of z/OSMF, AT-TLS rules, IPSEC policies, SMP/E, TSO/ISPF, SDSF/ISPF, and LPAR management.
  • Strong understanding of standard systems integration tools and practices.
• Analytical and Communication
  
  Skills:
  
  
  • Strong analytical skills with the ability to troubleshoot and resolve complex issues.
  • Excellent written and oral communication skills, with the ability to convey technical concepts to various audiences.
• Preferred:
  • Experience in a financial services environment.

This position requires having or obtaining a Public Trust Clearance. The requirements are below:

• Must be a US Citizen
• If On-Site, must be able to commute to Arlington, VA
• No Bankruptcies, open or closed (it is a lifelong check)
• No Car Repossessions (it is a lifelong check)
• No current collections that do not have a payment plan
• No bad standing with IRS

You must be a US citizen or national.

You must be able to clear a Federal background check that includes a review of your financial obligations.

Datawiz, a GTSC company, is proud to be an equal opportunity employer, committed to recruiting, hiring, and promoting qualified people of all backgrounds, regardless of sex, race, color, creed, national origin, religion, age, marital status, pregnancy, physical, mental or sensory disability; sexual orientation; gender identity or any other basis protected by federal, state or local law. Learn more about your EEO rights as an applicant.

Datawiz is committed to working with and providing reasonable accommodation to applicants with physical and mental disabilities. If you have a disability and require assistance with our online application process, please tell us how we can help by contacting us at

Note:

This accessibility is intended for individuals requiring accommodations and should not be used to check on the status of your application. Inquiries not specific to requesting accommodation will be discarded.

Employment in this position is contingent upon the successful completion of a background check. Depending on the nature of the job duties or requirements set forth by our government clients, additional screenings such as drug testing and/or credit checks may be required. These checks are conducted in accordance with all applicable federal, state, and local laws.

GTSC-Talent Solutions is an Equal Opportunity Employer and does not discriminate on the basis of race or ethnicity, religion, sex, national origin, age, veteran disability or genetic information or any other reason prohibited by law in employment.