Lead Info Sec Ops Specialist - IAM Unix Specialist

Nuveen; Dallas (TX); On-site; USD 108,000 - 130,000; Full time

Benefits offered by this job

BoKS/Privileged Access Management

Job summary

Nuveen seeks a Lead Information Security Specialist to safeguard enterprise Unix/Linux/Mainframe systems, focusing on privileged access management, sudo administration and RACF governance.

You will design and implement IAM controls, conduct SOX/GLBA/PCI-DSS audits, and develop automated security tooling while mentoring teammates and documenting procedures.

Qualifications

• 5+ years in IT or cybersecurity.
• Strong Unix/Linux fundamentals and sudo policy management.
• Experience administering RACF and BoKS privileged access controls.
• Experience with enterprise IAM integrations and scripting.
• Ability to conduct security audits for SOX/GLBA/PCI-DSS.

Responsibilities

• Design and maintain sudo access control policies across Unix/Linux environments.
• Administer Unix privilege access management infrastructure, including centralized authentication policies and privileged session management.
• Manage Mainframe RACF user management and dataset permissions.
• Conduct Unix and RACF security audits to ensure regulatory compliance.
• Develop automated security scripts using shell, Python and Perl.
• Bridge BoKS/sudo privileged access controls with enterprise IAM solutions.

Skills

Unix/Linux

Sudo policy management

RACF administration

BoKS ServerControl

Privileged access management

Python/Perl scripting

Security audits

SOX/GLBA/PCI-DSS compliance

Mainframe security

Documentation & mentoring

Education

University (Degree) Preferred

Tools

BoKS ServerControl

BeyondTrust EPM

Job description

We are seeking a Lead Information Security Specialist to safeguard critical enterprise Unix/Linux/Mainframe systems through specialized expertise in privileged access management, sudo administration, and RACF administration. This role designs and maintains complex IAM access control solutions, conducts security audits for regulatory compliance (SOX, GLBA), develops automated security scripts, bridges Unix and RACF privileged access controls with enterprise IAM solutions, and preserves institutional knowledge through documentation and mentorship. The position requires expertise in Unix/Linux system fundamentals, sudo policy management, Unix privileged access management administration, and modern security framework implementation.Key ResponsibilitiesDesign and maintain sudo access control policies across enterprise Unix/Linux environments, including sudoers file management, command restrictions, and privilege escalation controls to enforce least-privilege access principles.Administer and optimize Unix privilege access management solution infrastructure, including centralized authentication policies, access rules, host groups, and privileged session management across the Unix/Linux server fleet.Manage Mainframe RACF environment including user management, Dataset permissions, batch job maintenance, general resource profile management.Conduct specialized Unix and RACF security audits to ensure compliance with financial industry regulations (SOX, GLBA, PCI-DSS) and collaborate with internal/external auditors to demonstrate control effectiveness.Develop automated security scripts and tools using shell scripting, Python, and Perl to streamline access reviews, policy enforcement, and compliance reporting across Unix environments. Serve as technical bridge between BoKS/sudo privileged access controls and enterprise IAM solutions, designing integration strategies that align with overall cybersecurity architecture. Identify, assess, and remediate access control gaps including sudo misconfigurations, privilege escalation risks, and BoKS policy gaps, through regular access reviews and risk assessments.Provide expert guidance and mentorship to team members on Unix access control concepts, while maintaining comprehensive documentation of sudo policies, BoKS configurations, and security procedures.Educational RequirementsUniversity (Degree) PreferredWork Experience5+ Years Required; 7+ Years PreferredPhysical RequirementsPhysical Requirements: Sedentary WorkCareer Level8ICRequired Skills5+ years of experience in information technology and/or Cybersecurity3+ years of Unix/LinuxExperience with scripting (Ex. Bash, KSH, Python, Perl)Preferred QualificationsRACF administration experienceStrong hands-on experience with BoKS ServerControl (or similar centralized Unix access control solutions) - Privileged Access Management (Ex. BeyondTrust EPM)Experience in a containerized environmentRelated SkillsAccountability, Adaptability, Business Continuity Planning, Cloud Computing Security, Collaboration, Communication, Compliance, Consultative Communication, Cybersecurity, Detail-Oriented, General Risk Management, Network Security, Prioritizes EffectivelyAnticipated Posting End Date:2026-10-19Base Pay Range: $108,000/yr - $130,000/yrActual base salary may vary based upon, but not limited to, relevant experience, time in role, base salary of internal peers, prior performance, business sector, and geographic location. In addition to base salary, the competitive compensation package may include, depending on the role, participation in an incentive program linked to performance (for example, annual discretionary incentive programs, non-annual sales incentive plans, or other non-annual incentive plans)._____________________________________________________________________________________________________Company OverviewEvery worker deserves a secure retirement. For more than 100 years, TIAA has delivered it for millions of people. Founded to help educators retire with dignity, today weʼre a market-leading retirement company fueled by world-class asset management. But weʼre not just another legacy financial services firm. Weʼre fighting harder than ever before for our clients and the many Americans who need us.Our Culture of ImpactAt TIAA, we're on a mission to build on our 100+ year legacy of delivering for our clients while evolving to meet tomorrow's challenges. 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