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Mainframe Security Jobs in Arizona (NOW HIRING)

Apex Systems

Mainframe Systems Engineer

Chandler, AZ

$65 - $70.24/hr

Background in mainframe security administration, including defining and maintaining RACF profiles and controls. Compensation & Benefits The anticipated pay range for this position is $65.00 to $70.24 ...

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Mainframe Security information

What is a Mainframe Security job?

A Mainframe Security job involves protecting the mainframe environment by implementing security policies, monitoring access, and preventing unauthorized activities. Professionals in this role use tools like RACF, ACF2, or Top Secret to manage user authentication, enforce security controls, and detect potential threats. They also conduct audits, ensure compliance with regulations, and respond to security incidents. Their goal is to safeguard critical business data and maintain the integrity of the mainframe system.

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

To thrive in Mainframe Security, you need expertise in mainframe operating systems (such as IBM z/OS), security protocols, access control management, and risk assessment, typically supported by a degree in computer science or a related field. Familiarity with tools like RACF (Resource Access Control Facility), ACF2, and certifications such as CISSP or IBM Certified Specialist are common requirements. Strong problem-solving skills, attention to detail, and the ability to communicate security risks to both technical and non-technical stakeholders are valuable soft skills. These competencies are crucial for protecting critical business data, ensuring regulatory compliance, and minimizing security vulnerabilities in large-scale enterprise environments.

What are the typical daily responsibilities of a Mainframe Security specialist?

A Mainframe Security specialist is primarily responsible for managing user access, monitoring system activity for potential security incidents, and updating security policies to address emerging threats. Their day-to-day tasks often include configuring security software (such as RACF or ACF2), conducting system audits, investigating security breaches, and collaborating with IT and compliance teams. They may also provide guidance during security reviews and support internal or external audits. This role involves a blend of technical, analytical, and communicative activities to ensure the continued protection of the organization’s most critical information assets.
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Mainframe Security jobs near you
Infographic showing various Mainframe Security job openings in Arizona as of May 2026, with employment types broken down into 97% Full Time, 2% Part Time, and 1% Temporary. Highlights an 96% Physical, and 4% Remote job distribution.
Mainframe Security Engineer

Mainframe Security Engineer

Computer Task Group, Inc

Phoenix, AZ

Full-time

Posted 2 days ago

Job description

Overview

CTG is seeking a Mainframe Security Engineer to support and secure enterprise IBM z/OS environments for our client. This role is responsible for administering mainframe security controls, managing user access, supporting compliance initiatives, monitoring system activity, and protecting critical infrastructure from security threats and unauthorized access.

Location: Phoenix, AZ metro area (Hybrid working model)
Duration: 6 months with option to convert after 6 months
Citizenship Requirement: USC, Permanent Resident, or other EAD holders only (no visa-dependent candidates)

Key Responsibilities
  • Administer and maintain security controls for IBM z/OS mainframe environments
  • Configure and manage RACF, ACF2, and/or Top Secret security platforms
  • Implement RBAC, privileged access management, and user access controls
  • Monitor audit logs, security events, and system activity for potential threats
  • Perform vulnerability assessments and remediation activities
  • Support compliance initiatives including SOX, PCI-DSS, HIPAA, and NIST
  • Configure encryption, MFA, certificates, and secure communications
  • Automate security administration tasks using REXX, JCL, or scripting tools
  • Support incident response, forensic investigations, and disaster recovery planning
  • Collaborate with cybersecurity, infrastructure, audit, and application teams
Required Skills
  • Strong experience with IBM z/OS security administration
  • Hands-on expertise with RACF, ACF2, or CA Top Secret
  • Knowledge of IAM, RBAC, and privileged access controls
  • Experience with mainframe security auditing and compliance
  • Familiarity with encryption technologies and MFA integration
  • Scripting and automation experience using REXX and JCL
  • Strong troubleshooting and analytical skills
Qualifications
  • 5+ years of experience in mainframe security engineering or administration
  • Experience supporting enterprise or highly regulated environments preferred
  • Bachelor’s degree in IT, Computer Science, Cybersecurity, or related field preferred
  • CISSP, CISM, or IBM security certifications are a plus

Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required.

CTG does not accept unsolicited resumes from headhunters, recruitment agencies, or fee based recruitment services for this role.

To Apply:
To be considered, please apply directly to this requisition using the link provided. Kindly forward this to any other interested parties. Thank you!

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About Computer Task Group

Sourced by ZipRecruiter

We know that achieving our mission begins and ends with our people—and by people we mean you. Regardless of individual roles or responsibilities, regardless of industry or subject matter expertise, our lives happen in relation to other people—our colleagues, clients, and partners. CTG cultivates a workplace that attracts and develops the best people. Being Great Place to Work-CertifiedTM not only supports our Vision but also validates the rewarding workplace culture that has made CTG a leading IT and digital solutions and services company for more than 55 years.

Company size

1,001 - 5,000 Employees

Headquarters location

Buffalo, NY, US

Year founded

1966

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