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

Anticipated Posting End Date:

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.

Our Culture of Impact

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.

Benefits and Total Rewards

The organization is committed to making financial well-being possible for its clients, and is equally committed to the well-being of our associates. That’s why we offer a comprehensive Total Rewards package designed to make a positive difference in the lives of our associates and their loved ones. Our benefits include a superior retirement program and highly competitive health, wellness and work life offerings that can help you achieve and maintain your best possible physical, emotional and financial well-being. To learn more about your benefits, please review our Benefits Summary.

Equal Opportunity

We are an Equal Opportunity Employer. TIAA does not discriminate against any candidate or employee on the basis of age, race, color, national origin, sex, religion, veteran status, disability, sexual orientation, gender identity, or any other legally protected status.

Our full EEO & Non-Discrimination statement is on our careers home page, and you can read more about your rights and view government notices here.

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TIAA offers support for those who need assistance with our online application process to provide an equal employment opportunity to all job seekers, including individuals with disabilities. 

If you are a U.S. applicant and desire a reasonable accommodation to complete a job application please use one of the below options to contact our accessibility support team: 

Phone: (800) 842-2755

Email: [email protected]

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TIAA maintains a drug-free and smoke/free workplace.

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