Stephen Mullennex

Stephen Mullennex

CISSP | CEH | CASP+/SecX | CySA+ | Sec+ | Net+ | CSAE | CSAP | CNDA | MS | MBA Candidate

Role
Cybersecurity Manager at NS2 Mission
Location
Washington, DC, US
LinkedIn followers
500 followers

About Stephen Mullennex

Stephen Mullennex is a U.S. Navy veteran and accomplished Cybersecurity Leader with more than a decade of expertise across the Department of War (DoW), Defense Industrial Base (DIB), and Intelligence Community (IC). He has delivered high-impact Information System and Industrial Security support throughout the Washington, D.C, Maryland, and Virginia (DMV) region for premier organizations including SAP, Northrop Grumman, RTX, and Booz Allen Hamilton.Stephen’s career reflects a proven ability to safeguard national security interests across unclassified, collateral, special access, and intelligence environments. His track record includes driving innovative solutions to complex cybersecurity challenges while strengthening resilience in rapidly evolving digital landscapes.He holds a Master’s in Cybersecurity from Western Governors University, a Bachelor’s in Cybersecurity from Old Dominion University, and multiple industry certifications. Currently pursuing an MBA at Boston University (expected 2026), Stephen continues to expand his strategic and executive leadership capabilities to advance security initiatives at the highest level.

Experience

  1. Cybersecurity Manager

    NS2 Mission

    Jan 2025 — Present · Washington, DC, US

    Information Systems Security Manager (ISSM)

Education

  • Western Governors University

    Master of Science - MS, Cybersecurity and Information Assurance

    2022 — 2023

  • Old Dominion University

    Bachelor of Science - BS, Cybersecurity

    2015 — 2018

  • Questrom School of Business, Boston University

    Master of Business Administration - MBA

    2024 — 2026

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