Principal Cyber Security Engineer Job at ManTech, Chantilly, Fairfax County, VA

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  • ManTech
  • Chantilly, Fairfax County, VA

Job Description

Salary: $100,000 - 140,000 per year Requirements:

  • We are looking for candidates who meet the following qualifications:
  • A bachelor’s degree or 4+ years of additional cyber experience in lieu of a degree
  • 7+ years of cyber experience
  • Experience with technologies involved in large-scale enterprise deployments/data centers
  • Experience with deploying and/or supporting enterprise security software products such as firewalls, IPS, Anti-Virus solutions, application firewalls, high availability solutions, and network management systems
  • Knowledge of Windows and Linux systems, general operating system security practices, TCP/IP networking, 802.1x, and network security concepts
  • IAT Level II (GSEC, Security+, SSCP, or CCNA-Security) certification or the ability to obtain one within 6 months of hire
Responsibilities:
  • As a Principal Cyber Security Engineer, you will:
  • Engineer, design, implement, integrate, and sustain Comply-to-Connect (C2C) deployment support to migrate, deploy, improve, and maintain C2C services. This includes managing and maintaining the appliances, applications, servers, and supporting infrastructure in both unclassified and classified environments.
  • Coordinate with the network service provider to develop and maintain network architecture diagrams.
  • Evaluate and recommend changes and/or technology upgrades to address performance, standardization, and best practices in the industry.
  • Monitor and investigate C2C performance and faults, providing recommendations for improvements.
  • Interact with team members and customers at multiple levels to gather, supply, or coordinate information.
  • Support Assessment and Authorization activities related to cybersecurity technologies when applicable.
Technologies:
  • Cisco
  • Support
  • Linux
  • Network
  • Perl
  • Security
  • TCP/IP
  • Windows
  • XML

More:

Preferred qualifications include:
- Experience implementing and using complex software products that involve multiple components
- Familiarity with vendor-agnostic C2C capabilities and services, open-source components, trends, DoD integration and networks, as well as DoD engineering and sustainment procedures and processes to deliver real-time enterprise-level expertise to our customers
- Experience with Cisco Identity Services Engine (ISE)
- Knowledge of Shell, Perl, and XML scripting
- Experience with tools such as Nmap, Nessus, and tcpdump

Clearance Requirements:
Candidates must have a current/active TS/SCI clearance with Polygraph.

Physical Requirements:
The person in this position must be able to remain stationary for 50% of the time, occasionally moving around the office to access file cabinets and office machinery, or to communicate with co-workers, management, and customers via email, phone, and virtual communication, which may include delivering presentations.

last updated 12 week of 2026

Job Tags

Full time, Work at office

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