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MARS-TECHNOMINDS, INC
Mainframe Security Engineer (z/OS, ACF2/TSS/RACF, zSecure)

Mainframe Security Engineer (z/OS, ACF2/TSS/RACF, zSecure)

Hybrid

Pittsburgh, United states

Senior

Freelance

03-11-2025

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Skills

Communication Jira Data Analysis Penetration Testing Problem-solving Training Programming Confluence Analytics

Job Specifications

Title: Mainframe Security Engineer (z/OS, ACF2/TSS/RACF, zSecure)
Duration: 12 Months
Work Location: Pittsburgh, PA / Lake Mary, FL

Remote: Will also consider fully remote candidates
Onsite Expectations: Hybrid (4 days onsite per week preferred)
Remote option available for exceptional candidates

Position Summary
The Mainframe Security Engineer will play a key role in executing day-to-day tactical project activities within the Information Security domain. This position involves detailed data analytics, mainframe security administration, and direct support of vulnerability management projects. The ideal candidate will possess deep technical expertise in mainframe security systems (ACF2, TSS, RACF) and strong familiarity with zSecure Audit.

Key Responsibilities
Execute tactical project activities, including data analysis, asset modeling, and project documentation.
Serve as a Mainframe Security Subject Matter Expert (SME) for vulnerability management initiatives.
Provide guidance on z/OS hardening, security controls, and vulnerability remediation.
Interface directly with client teams to provide training and resolve questions regarding home-grown vulnerability management tools.
Collaborate effectively between mainframe engineering and information security teams.
Utilize zSecure Audit for analysis, reporting, and compliance validation.
Apply z/OS ACF2/TSS/RACF STIGs in system hardening efforts.
Contribute to security consulting and penetration testing initiatives (preferred).
Demonstrate a proactive, problem-solving mindset with strong communication skills.

Required Skills & Experience
7–10 years of zSecure Audit experience.
Proven expertise in ACF2 or TSS Mainframe Security.
Hands-on experience leveraging z/OS ACF2/TSS/RACF STIGs for system hardening.
Strong analytical and problem-solving abilities.
Excellent communication and collaboration skills.

Preferred Skills & Experience
10+ years in z/OS ACF2 or TSS environments.
Exposure to Vulnerability Management tools and processes.
Familiarity with JIRA, Confluence, and SharePoint.
Background in z/OS security consulting or penetration testing.
Required Software / Technology
ACF2 or TSS mainframe security
zSecure programming using CARLa code
Preferred Software / Technology
N/A

Education / Certifications
Bachelor’s Degree and/or 15+ years of Mainframe Security experience

Interview Process
2 Rounds via Microsoft Team

Regards,
Seema Kousar
seema@marstechnominds.com

About the Company

MARS-Technominds has indeed come a long way in setting high standards in technology and consulting services and has certainly proved to be a force to reckon with since its inception. As of now MARS-Technominds no doubt enjoys a dominant presence on account of constant delivery of innovation, quality, consistency as well as value for money. MARS-Technominds is the outcome of the ever growing need for information technology, which has definitely defied conventional approach to technology and consulting services. We at MARS-Tec... Know more