Mainframe Security Engineer Logical Security

Job Description Mainframe Systems Programmer (RACF Security Administration)

ABOUT US

Ensono is a hybrid IT services provider that sees a world in transformation. We understand the world of business has become more complex layered and interdependent because were enabling the IT infrastructure for that transformation. Our clients are some of the most innovative and forward-thinking companies in the world and we help keep their businesses thriving. With nearly 50 years of experience we optimize and modernize IT infrastructure by amplifying the power of mainframes and mid-range servers with the agility of cloud. Check us out at .

The Mainframe Systems Programmer RACF Security Administration is responsible for the administration maintenance support and enhancement of IBM z/OS security environments with a strong focus on RACF (Resource Access Control Facility). This role ensures the integrity confidentiality and availability of enterprise mainframe systems while supporting compliance audit and operational requirements. As well as Digital Certificate renewals and creation.

Position Summary

This career-level position provides technical support and administration for enterprise mainframe security infrastructure. The ideal candidate will possess hands-on experience with RACF administration z/OS system security user provisioning access controls auditing digital certificates and compliance standards. The role requires collaboration with infrastructure teams auditors application support and business stakeholders to maintain a secure and stable mainframe environment.

Key Responsibilities

• Administer and maintain RACF security definitions user IDs groups datasets and resource profiles.
• Implement and manage access controls for z/OS systems applications datasets and subsystems.
• Monitor RACF system logs SMF records and security events for compliance and incident response.
• Support security audits and ensure compliance with organizational and regulatory requirements.
• Analyze and resolve RACF-related incidents access issues and security vulnerabilities.
• Collaborate with application teams to implement secure access solutions and role-based access controls.
• Develop and maintain operational procedures standards and technical documentation.
• Support system upgrades migrations and implementation of new security features.
• Work closely with system programmers auditors and cybersecurity teams to strengthen enterprise security posture.

Required Qualifications

• 37 years of experience supporting IBM z/OS mainframe environments.
• Hands-on experience administering RACF security in enterprise environments.
• Strong understanding of z/OS security architecture and mainframe operations.
• Experience with TSO/ISPF JCL SDSF and IBM utilities.
• Knowledge of SMF records security reporting and audit compliance processes.
• Experience troubleshooting security access issues and implementing corrective actions within client scope.
• Understanding of change management incident management and operational support procedures.
• Strong analytical problem-solving and communication skills.

Preferred Qualifications

• Experience with zSecure native RACF commands and Digital Certificates.
• Knowledge of CICS DB2 IMS MQ and other mainframe subsystems.
• Experience with automation and scripting in z/OS environments.
• IBM Mainframe or RACF-related certifications are a plus.

Category Skills

Operating Systems IBM z/OS

Security RACF zSecure SMF Audit Controls

Mainframe Tools TSO/ISPF SDSF JCL

Subsystems CICS DB2 IMS MQ

Processes Access Management Incident Response Compliance Audits Digital Certificates

Documentation Technical Procedures Security Standards

Work Environment

This position operates in a highly regulated enterprise IT environment supporting mission-critical mainframe systems. Participation in weekend maintenance windows and after-hours support activities is required. This is a position based on US client hours EST.

Equal Opportunity Statement

The organization is committed to creating an inclusive environment for all employees and is proud to be an equal opportunity employer. Employment decisions are based on qualifications merit and business needs.

Shift Timing- 1:30 PM to 10:30 PM

We are an equal opportunity employer. All qualified applicants will be considered for employment without regard to caste colour creed religion gender gender identity sexual orientation age disability HIV status or any other status protected by law. Candidates with disabilities who require accommodations during the recruitment process are encouraged to contact our Talent Acquisition team to place a request