10 zero trust rollout experts
Zero trust appears in the job titles of six people here, from the FDIC's Zero Trust program manager lead to directors of zero trust engineering at ManTech and of identity and zero trust at NVIDIA, and in the described work of the other four. Five hold or held government roles, at NSF, the U.S. Department of Education, the National Endowment for the Arts, the FDIC and the State of Montana, so agencies and companies sequencing a rollout can both find a match.
Professionals to explore
Dan Hofherr
LinkedInExperience: Former NSF Chief Information Security Officer and Division Director, Division of Information Systems · National Science Foundation (NSF)
Dan Hofherr was Chief Information Security Officer and Director, Division of Security and Operations at NSF (2024–2025), following NSF Chief Information Security Officer and Division Director, Division of Information Systems (2018–2024). Earlier NSF titles include NSF Chief Information Security Officer and Deputy Director Division of Information Systems (2008–2018) and Division Director (ES-00) (2008–2018). Hofherr cites the agency's IPv6 transition and Zero Trust Architecture among major projects spearheaded at NSF.
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Dwayne Cyr
LinkedInExperience: Senior Director Identity and Zero Trust Services · Johnson Controls
Senior Director Identity and Zero Trust Services at Johnson Controls since 2023, Dwayne Cyr held four Textron titles: Director Information Technology Security (2021–2023), Senior Cybersecurity Manager (2018–2021), Manager - Advanced Threats and Response (2015–2018) and Solution Architect (2010–2015). A title that puts identity and zero trust in one service line makes Cyr a fit for questions on organizing those two services together.
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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, Iqbal Yousuf lists developing the strategy and approach for implementing Zero Trust and conducting an assessment using CISA's Zero Trust Maturity Model (ZTMM). Other titles are Technical Project Manager at the City of Berkeley (2021–2023) and Vulnerability Management Program Lead SME (2017–2021) and System Architect (2016–2017) at the Office of the Comptroller of the Currency.
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James Zito
LinkedInExperience: Cybersecurity Architect · State of Montana
James Zito's titles are all at the State of Montana: Cybersecurity Architect since 2021, Incident Response Technical Security Bureau Chief (2019–2021), Incident Response and Technical Security Supervisor (2014–2019), Information Security Analyst (2013–2014) and Enterprise Operations Center Analyst (2011–2013). Zito describes the current work as "focusing on driving Zero Trust Architecture change", a fit for questions on zero trust in state government.
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Mohammed Nasrulla Khan
LinkedInExperience: Director of Cybersecurity - Identity and Zero Trust · NVIDIA
Identity and zero trust are the two areas in Mohammed Nasrulla Khan's title, Director of Cybersecurity - Identity and Zero Trust at NVIDIA since 2025, which followed IT Infrastructure Director at Juniper Networks (2021–2025). Juniper titles also include IT Architecture Senior Manager (2016–2021) and Engineering Systems Admin Manager (2012–2016), and Certificate and SCEP Management and the JAMF Pro Management Suite appear among the listed skills, a fit for questions on device certificates and identity in a zero trust design.
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Nathan Sloan
LinkedInExperience: Director of Zero Trust Engineering · ManTech
At MANTECH, Nathan Sloan has been Director of Zero Trust Engineering since 2022, following Cyber Security Systems Analyst at Gryphon Technologies, Inc (2019–2022); Mount Aloysius College titles were Adjunct Faculty, Network Administrator and Help Desk Technician. MANTECH's company profile describes it as specializing in defense and space, intelligence and homeland security, so Sloan fits questions on zero trust engineering for those mission areas.
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Roman Kulbashny
LinkedInExperience: Security Engineering and Architecture Branch Chief · U.S. Department of Education
Roman Kulbashny has been Security Engineering and Architecture Branch Chief at the U.S. Department of Education since 2018, alongside Supervisor Information Technology Specialist - Infosec (GS-15) there over the same years; other titles, undated, include CDM Program Manager at HHS and the same GS-15 title at OPM. Kulbashny cites leading initiatives including implementation of Zero Trust Architecture, the Identity Credential Access Management (ICAM) Program and Post-Quantum Cryptography (PQC).
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Shannon Dunn, MBA
LinkedInExperience: Senior Manager, Zero Trust Engineering · Cigna Healthcare
Cigna's Zero Trust infrastructure, "anchored by a $53M Zscaler program" and delivering secure access for approximately 100,000 employees worldwide, is what Shannon Dunn, MBA oversees, in their own words, as Senior Manager, Zero Trust Engineering at Cigna Healthcare since 2026, a title held alongside Sr. Manager, Infrastructure Engineering there since 2022. That makes Dunn the pick for questions on a Zscaler-based rollout at that scale.
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Shirish Jadhav
LinkedInExperience: Senior Security Engineer · VS&Co
Based in Pune, Shirish Jadhav has been Senior Security Engineer at VS&Co since 2022 and lists instituting "posture-based access controls to enforce Zero Trust principles across hybrid and remote workforces" and tuning Cloudflare WAF policies against OWASP Top 10 threats. Other titles are Senior Security Analyst at FIS (2019–2022), Network Security Analyst at Dimension Data (2018–2019) and Network Security Engineer at Capgemini (2015–2018).
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Stephen Haselhorst
LinkedInExperience: FDIC Zero Trust program manager lead · Federal Deposit Insurance Corporation (FDIC)
Zero Trust program management at the Federal Deposit Insurance Corporation (FDIC) has been Stephen Haselhorst's title area since 2022 as FDIC Zero Trust program manager lead, with an Information Technology Specialist (Inf (CG-15) title over the same span. Earlier titles include Network Architect (2015–2020) and Enterprise Architect (2020–2021) at MITRE, and Haselhorst cites skills in Information Assurance, Information Security and Network Administration, a fit for the network architecture side of a zero trust program.
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Choose the right perspective
Agency programs are best covered by Iqbal Yousuf, who conducted an assessment against CISA's Zero Trust Maturity Model, Stephen Haselhorst at the FDIC and Roman Kulbashny, whose initiatives pair zero trust with identity credential and access management. For a company rollout, Shannon Dunn speaks to a Zscaler program at Cigna, Mohammed Nasrulla Khan and Dwayne Cyr hold combined identity and zero trust titles, and Shirish Jadhav gives the engineer-level view.
Questions to take into the conversation
- 01Which area did you start with, identity, devices, network or applications, and why that one first?
- 02How did you use a maturity model such as CISA's to score progress and report it to leadership?
- 03Which legacy applications could not move off perimeter-based access, and what did you do with 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; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.