Cybersecurity
10 zero trust rollout experts
These ten security professionals have held roles in which planning, building or running zero trust architecture was part of their own work. Readers can learn how a zero trust program is scoped, how identity and access controls are phased in, and what gets in the way during a rollout.
Professionals to explore
01—10Dan Hofherr
LinkedInExperience: NSF Chief Information Security Officer and Division Director, Division of Information Systems · National Science Foundation (NSF)
NSF Chief Information Security Officer and Division Director, Division of Information Systems at the National Science Foundation (2018–2024), then Chief Information Security Officer and Director, Division of Security and Operations at NSF (2024–2025). The profile says he spearheaded major NSF projects including the agency's IPv6 transition and Zero Trust Architecture, alongside cybersecurity programs and cloud initiatives in federal environments.
Dwayne Cyr
LinkedInExperience: Senior Director Identity and Zero Trust Services · Johnson Controls
Senior Director Identity and Zero Trust Services at Johnson Controls since 2023, a company the profile describes as providing industrial automation and controls solutions. Before that he held security roles at Textron, including Director Information Technology Security (2021–2023) and Senior Cybersecurity Manager (2018–2021).
Iqbal Yousuf
LinkedInExperience: Zero Trust Architect & Program Manager · National Endowment for the Arts
Zero Trust Architect & Program Manager at the National Endowment for the Arts since 2023, after serving as Cybersecurity, Cyber-resilience, Infrastructure, & Operations - Technical Project Manager at the City of Berkeley (2021–2023). In the current role he developed the strategy and approach for implementing Zero Trust, conducted an assessment using CISA's Zero Trust Maturity Model (ZTMM) and supports the CISO on long-term technology strategy.
James Zito
LinkedInExperience: Cybersecurity Architect · State of Montana
Cybersecurity Architect at the State of Montana since 2021, after serving as Incident Response Technical Security Bureau Chief there (2019–2021). The profile says he works for the state as the Enterprise Cyber Security Architect focusing on driving Zero Trust Architecture change, following roles as a security manager, security analyst, incident responder and forensics examiner.
Mohammed Nasrulla Khan
LinkedInExperience: Director of Cybersecurity - Identity and Zero Trust · NVIDIA
Director of Cybersecurity - Identity and Zero Trust at NVIDIA since 2025. Before that he was IT Infrastructure Director (2021–2025) and IT Architecture Senior Manager (2016–2021) at Juniper Networks, and the profile mentions certificate and SCEP management and the JAMF Pro management suite.
Nathan Sloan
LinkedInExperience: Director of Zero Trust Engineering · ManTech
Director of Zero Trust Engineering at ManTech since 2022, after serving as Cyber Security Systems Analyst at Gryphon Technologies, Inc (2019–2022). The profile describes ManTech as a company that specializes in defense and space, intelligence and homeland security, and lists his current role at director level in its engineering and technical department.
Roman Kulbashny
LinkedInExperience: Security Engineering and Architecture Branch Chief · U.S. Department of Education
Security Engineering and Architecture Branch Chief at the U.S. Department of Education since 2018. In that role the profile says he leads multiple critical cybersecurity initiatives, including implementation of Zero Trust Architecture, the Identity Credential Access Management (ICAM) Program and Post-Quantum Cryptography (PQC).
Shannon Dunn, MBA
LinkedInExperience: Senior Manager, Zero Trust Engineering · Cigna Healthcare
Senior Manager, Zero Trust Engineering at Cigna Healthcare since 2026, alongside the role of Sr. Manager, Infrastructure Engineering there since 2022. The profile says this role oversees Cigna's Zero Trust infrastructure, anchored by a $53M Zscaler program that delivers secure access and protection for approximately 100,000 employees worldwide.
Shirish Jadhav
LinkedInExperience: Senior Security Engineer · VS&Co
Senior Security Engineer at VS&Co since 2022, after serving as Senior Security Analyst at FIS (2019–2022) and Network Security Analyst at Dimension Data (2018–2019). The profile describes instituting posture-based access controls to enforce Zero Trust principles across hybrid and remote workforces, and tuning Cloudflare WAF policies to mitigate OWASP Top 10 threats.
Stephen Haselhorst
LinkedInExperience: FDIC Zero Trust program manager lead · Federal Deposit Insurance Corporation (FDIC)
FDIC Zero Trust program manager lead at the Federal Deposit Insurance Corporation (FDIC) since 2022. He was previously Enterprise Architect (2020–2021) and Network Architect (2015–2020) at MITRE, and the profile lists skills in information assurance, information security and network administration.
Choose the right perspective
Match the person's setting to yours, since a zero trust program at a public agency follows different mandates and maturity models than one at a private company. Also decide whether you need someone who set the strategy and governance or someone who engineered and operated the access controls day to day.
Questions to take into the conversation
- 01How did you sequence the zero trust rollout across identity, devices, network and applications, and what did you tackle first?
- 02How did you measure progress, for example against a maturity model, and report it to leadership?
- 03What resistance or legacy dependencies did you run into when moving away from perimeter-based access, and how did you handle them?
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot and may describe past or present roles. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
Request a correction or removal