z/OS UNIX System Services (USS) Security Engineer
$95,000–$135,000 year
On-site · Alpharetta, Georgia, United States
Alpharetta, Georgia, United StatesOn-siteFull Time$95,000–$135,000 yearSenior LevelBachelors DegreeEnterprise
Type
Full Time
Level
Senior Level
Education
Bachelors Degree
Company size
Enterprise
Job Summary
Secure and administer z/OS UNIX System Services (USS) on the mainframe; enforce least privilege, protect privileged access, and ensure alignment between UNIX permissions, ESM controls (RACF/TSS), and enterprise security standards. Partner with Enterprise Z security architect, system programmers, middleware teams, and audit/compliance stakeholders to maintain a secure and compliant USS platform. Develop and maintain USS security standards, procedures, and documentation.
Required Qualifications
- Bachelor's degree and 5+ years of experience with mainframe and z/OS UNIX System Services
- Strong hands on experience securing USS environments
- Proven experience administering RACF or equivalent ESM for USS
- Solid understanding of: UIDs, GIDs, OMVS segments, and service IDs
- POSIX permissions, ownership, and execution controls
- Experience with USS related security controls, including: UNIXPRIV class FACILITY class resources impacting OMVS STARTED task identities for USS services
- Working knowledge of zFS/HFS file systems, mount options, and USS SMF/audit logging
- Strong understanding of least privilege and separation of duties principles
- Desired Experience with PKI, digital certificates, Kerberos, SSL/TLS, SSH, or OpenSSL
- Exposure to systems programming concepts (e.g., SMP/E, SYS1 datasets, Assembler)
- Understanding of mainframe networking concepts
- Experience supporting or securing middleware technologies (e.g., MQ)
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