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Mainframe Security Expert

Eliassen Group

Pittsburgh, PA • 9/11/2026

Information Technology , Security & Law Enforcement

Job Description

Job Description
Description:

Hybrid 4 days onsite in Pittsburgh, PA

Our client seeks a Mainframe Security expert to execute day-to-day project tasks, perform detailed analytics, guide asset modeling, and produce project documentation. The role will serve as a subject matter expert across ACF2, Top Secret (TSS), and RACF within vulnerability management initiatives, including standards setting for z/OS hardening, controls, and remediation, while communicating between mainframe engineering and information security teams.

This is a contract to hire opportunity. Applicants must be willing and able to work on a w2 basis and convert to FTE following contract duration. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.

Rate: $61.00 to $71.00/hr. w2

Responsibilities:
  • Provide day-to-day tactical project execution and perform detailed analytics across multiple data points.
  • Act as SME for mainframe security systems including ACF2, TSS, and RACF within vulnerability management projects.
  • Leverage z/OS ACF2/TSS/RACF STIG for hardening efforts.
  • Interface directly with client staff to train and address daily questions on a home-grown vulnerability tool and related utilities.
  • Determine and document security standards for z/OS hardening, security controls, and vulnerability remediation.
  • Facilitate communication between mainframe engineering and information security teams.
  • Create and maintain project documentation as required.
Experience Requirements:
  • zSecure Audit experience required, 7 to 10 years.
  • Expertise in Broadcom ACF2 and/or Top Secret (TSS); 10+ years with z/OS ACF2 or TSS.
  • Demonstrated use of z/OS ACF2/TSS/RACF STIG in hardening.
  • Proficiency with Mainframe REXX, IBM Syncsort, and ICETOOL.
  • Experience with zSecure programming using CARLa.
  • Background in z/OS security consulting or penetration testing preferred.
  • Exposure to vulnerability management.
  • Good communication and documentation skills; exposure to JIRA, Confluence, and SharePoint.
Education Requirements:
  • BS degree and/or 15+ years of mainframe security experience.
Recruitment Transparency Notice
Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screeningand hiringprocess. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team (, ) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group’s use of these tools, including AI tools, as part of the application and hiring process.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:

· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.

· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.

If you have any indication of fraudulent activity, please contact.

About Eliassen Group:
Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.
Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.
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