Mantech is a technology and services firm that partners with U.S. federal agencies, the military, and allied organizations to deliver secure, mission‑critical solutions. Leveraging more than 57 years of experience, the company specializes in cyber defense, intelligence and counter‑intelligence, systems engineering, enterprise IT, software development, data analytics, and C4ISR/C5ISR capabilities. With a workforce of nearly 9,800 employees—40 % veterans and many from intelligence and homeland‑security backgrounds—Mantech brings firsthand operational insight to every project. Its reputation for reliability, adaptability, and a deep commitment to public service makes it a trusted partner for complex, high‑stakes challenges across defense, healthcare, and environmental sectors.
MANTECH is seeking a Senior Information System Security Engineer to join their team in Washington, D.C. or Virginia. The successful candidate will be responsible for designing and implementing cybersecurity solutions, managing vulnerabilities, and leading stakeholder engagement.
Mantech is a technology and services firm that partners with U.S. federal agencies, the military, and allied organizations to deliver secure, mission‑critical solutions. Leveraging more than 57 years of experience, the company specializes in cyber defense, intelligence and counter‑intelligence, systems engineering, enterprise IT, software development, data analytics, and C4ISR/C5ISR capabilities. With a workforce of nearly 9,800 employees—40 % veterans and many from intelligence and homeland‑security backgrounds—Mantech brings firsthand operational insight to every project. Its reputation for reliability, adaptability, and a deep commitment to public service makes it a trusted partner for complex, high‑stakes challenges across defense, healthcare, and environmental sectors.
Mantech