Jobs and Careers
MA

Principal Cyber Security Engineer

ManTech
United Statesfull_timeVerifiedPosted 31 Jul 2026
💰 $214,500/yr($128,800/yr$214,500/yr)

About the role

General information

Requisition #
R69619
Locations
USA-CO-Denver
Posting Date
07/30/2026
Security Clearance Required
TS/SCI w/ Poly
Remote Type
Onsite
Time Type
Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Principal Cyber Security Engineer to join our team in Denver, CO.

You will help protect our national security while working on innovative projects that offer opportunities for advancement. This role supports the design, implementation, and maintenance of complex systems and infrastructure to proactively mitigate cyber threats to customer networks.

Responsibilities include but are not limited to:

  • Deploys solutions to proactively mitigate cyber threats to customer networks.
  • Collaborate with cross-functional teams to ensure that our systems and infrastructure meet security, scalability, and performance requirements.
  • Troubleshoot and resolve complex system issues, including performance and availability problems.
  • Makes recommendations to improve overall security posture to senior management.
  • Plan and execute system upgrades, patches, and migrations.
  • Evaluates potential system security risks and takes appropriate corrective, mitigation, and recovery actions.
  • Researches, evaluates, and provides feedback on problematic security trends and patterns in customer support requirements.

Minimum Qualifications:

  • Bachelor’s degree, or 4+ additional years of cyber experience in lieu of a degree.
  • 7+ years of cyber security experience.
  • Experience with IT system and application engineering background with experience in modern Windows, LINUX, network operating systems, databases, and virtual computing.
  • Experience with certification testing, Risk Management Framework (RMF), information assurance tools, DoD STIG, and vulnerability assessment.
  • Experience with VMWare infrastructure, including vCenter and ESXi configuration and maintenance.
  • Knowledge of network devices (routers and switches), TCP/UDP traffic, firewall technologies, IDS technologies, proxy technologies, and antivirus, spam and spyware solutions.
  • DoD 8570 certification meeting IAT Level II required.

Preferred Qua

Apply for this role

Generate a tailored application kit with a matched cover letter, interview prep, and CV highlights — in under 60 seconds.

Apply Now →Generate Application Kit

Free account required — sign up in 30s

Company

ManTech

View company profile →