Lead Info Sec Ops Specialist - IAM Unix Specialist

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 Responsibilities

• Design 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 Requirements

• University (Degree) Preferred

Work Experience

• 5+ Years Required; 7+ Years Preferred

Physical Requirements

• Physical Requirements: Sedentary Work

Career Level 8IC

Required Skills

• 5+ years of experience in information technology and/or Cybersecurity

• 3+ years of Unix/Linux

• Experience with scripting (Ex. Bash, KSH, Python, Perl)

Preferred Qualifications

• RACF administration experience

• Strong hands-on experience with BoKS ServerControl (or similar centralized Unix access control solutions) - Privileged Access Management (Ex. BeyondTrust EPM)

• Experience in a containerized environment

Related Skills

Accountability, Adaptability, Business Continuity Planning, Cloud Computing Security, Collaboration, Communication, Compliance, Consultative Communication, Cybersecurity, Detail-Oriented, General Risk Management, Network Security, Prioritizes Effectively

Anticipated Posting End Date:

2026-11-27

Base Pay Range: $108,000/yr - $130,000/yr

Actual 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).

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Company Overview

Every 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.

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At 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. We equip our associates with future-focused skills and AI tools that enable us to advance our mission. Together, we are fighting to ensure a more secure financial future for all and for generations to come. We are guided by our values: Champion Our People, Be Client Obsessed, Lead with Integrity, Own It, and Win As One. They influence every decision we make and how we work together to serve our clients every day. We thrive in a collaborative in-office environment where teams work across organizational boundaries with shared purpose, accelerating innovation and delivering meaningful results. Our workplace brings together TIAA and Nuveen's entrepreneurial spirit, where we work hard and work together to create lasting impact. Here, every associate can grow through meaningful learning experiences and development pathways—because when our people succeed, our impact on clients' lives grows stronger.

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