David Himmel
@davidhimmel
Experienced cybersecurity professional specializing in IT operations and architecture.
United StatesWhat I'm looking for
I am an experienced cybersecurity professional with a strong background in IT operations, information security architecture, and hands-on systems administration. I have supported enterprise environments at Freddie Mac and other organizations, contributed to change review and directive exception processes, built and edited threat models, and mentored junior staff while producing SOPs and technical job aids.
I hold a M.S. in Cyber Security and multiple technical certifications (CompTIA A+, Network+, Security+, AWS Cloud Practitioner, PCEP, ITIL Foundations) and have practical experience across cloud platforms (AWS, Azure, GCP), IAM, CyberArk, VMWare Horizon, Office 365 migrations, MDM, and a range of endpoint and backup technologies. I aim to apply my blend of operational support and security architecture expertise to strengthen secure deployments and guide teams toward compliant, resilient solutions.
Experience
Work history, roles, and key accomplishments
FMReviewed and edited IT solution architecture for production and non-production deployments, built threat models, and managed directive exception and new technology request processes to reduce security risk and ensure compliance with NIST 800-53 controls.
FMProvided in-person and email Tier II IT support including AD account management, VM/VDI administration, MDM for iOS/Android, CyberArk credential management, and led Office 365 and Windows 10 migrations to improve user productivity and platform stability.
Systems Administrator
Ligado Networks
Jun 2018 - Mar 2019 (9 months)
Provided onsite and remote desktop support, managed SentinelOne endpoint security, tape backups, AD and Office 365 administration, WDS imaging, VPN and collaboration tools, and produced company-wide technical documentation.
ALDelivered Tier II and white-glove IT support for global users and executives, managed imaging via SCCM, administered Active Directory and Office 365, and supported AV, VoIP, and remote access systems to streamline operations.
TTIT Analyst II
Tetra Tech
Nov 2013 - Jun 2016 (2 years 7 months)
Provided onsite and remote IT support for NSF personnel, managed AD account lifecycle, configured PIV/CAC and multi-factor authentication, and maintained technical documentation and monitoring for research programs.
IT Support Analyst
Insight Global
Oct 2012 - Jun 2013 (8 months)
Provided remote IT support across county departments and schools, managed inventory and AD, and resolved OS, application, hardware, and network issues to maintain continuity of public services.
IT Support Specialist
Network Management
May 2012 - Oct 2012 (5 months)
Performed on-site and remote troubleshooting for clients in VA/MD/DC, installed and configured desktops, network devices, and backup solutions, and executed data recovery and standard PC builds.
Education
Degrees, certifications, and relevant coursework
LULiberty University
Master of Science, Cyber Security
Completed Master of Science in Cyber Security with coursework and skills relevant to cybersecurity operations and architecture.
UWUniversity of Mary Washington
Bachelor of Science, Computer Information Systems
Grade: Honors
Earned a Bachelor of Science in Computer Information Systems, graduating with honors.
NCNorthern Virginia Community College
Associate of Applied Science, Marketing
Completed an Associate of Applied Science in Marketing focusing on practical marketing and business skills.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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