Shane Trimbur

Network & Security Architect · CSfC · PKI · STIG/ACAS · cross-domain

I design and operate secure networks for defense programs — CSfC architectures, PKI, and cross-domain boundaries. A network engineer in Stuttgart, Germany, with two decades prior in the Marine Corps as a cybersecurity educator and data systems engineering officer.

CISSP · CWO3, USMC (Ret.)

About

I spent two decades building and defending military networks — from tactical operations centers to multinational exercises — and instructing the next class of communicators and cyber operators. I care about the place where security requirements, coalition realities, and mission tempo collide, and about building systems that hold up there.

Today I work on the hard end of secure networking: CSfC architectures, PKI and certificate lifecycle, cross-domain solutions, and STIG/ACAS compliance at scale.

Selected Work

Two decades of defense network engineering

Modernizing tactical and enterprise infrastructure, standing up secure networks, leading compliance-driven refresh programs, and defending sensitive systems on deployment. Specifics available under appropriate cover on request.

Experience

  1. Network Engineer II

    2025 – Present · Stuttgart, Germany

    Secure network architecture for DoD programs.

  2. Data Systems Engineering Officer — U.S. Marine Corps

    2023 – 2025 · California

    Led enterprise cloud adoption and data-fusion initiatives.

  3. Data Systems Engineering Officer — U.S. Marine Corps

    2022 – 2023 · California

    Systems engineering lead for a communications-squadron modernization effort.

  4. Communications Directorate Lead — U.S. Marine Corps

    2019 – 2022 · California

    Directed an infrastructure modernization portfolio while maintaining full compliance throughout.

  5. Information Systems Security Manager — U.S. Marine Corps

    2017 – 2019 · Forward-deployed

    Forward-deployed information systems security manager for sensitive systems across a distributed enterprise.

  6. Information Systems Security Officer — U.S. Marine Corps

    2015 – 2017 · California

    Deployed network detection and packet-analysis tooling; evaluated network behavior analytics against live traffic.

  7. Cybersecurity Instructor & Curriculum Developer — U.S. Marine Corps

    2012 – 2015 · California

    Instructed Marines in enterprise security, vulnerability management, and network defense; developed and reviewed course curriculum.

  8. Information Systems Coordinator — U.S. Marine Corps

    2009 – 2012 · California

    Integrated command-and-control systems and communications infrastructure for multinational exercises.

  9. Tactical Data Systems Administrator — U.S. Marine Corps

    2005 – 2009 · North Carolina

    Maintained mission-critical systems across division combat operations centers; engineered communications architecture for large-scale exercises.

Skills

Focus areas CSfC · PKI · STIG/ACAS · cross-domain

Education & Certifications

B.S., Computer and Information Technology — University of Maryland University College, 2012

CISSP (ISC², 2017)