Mantech

MANTECH seeks a motivated, career and customer-oriented Senior Network Engineer to join our team in Stafford, VA. 

Responsibilities include but are not limited to:

• Plans, designs, and maintains the connectivity of enterprise network assets, ensuring compliance and secure operations on classified networks (SIPR, NIPR, JWICS).

• Collaborates with stakeholders to address connectivity requirements and implements necessary configurations to facilitate efficient and secure data transmission.

• Ensures all network switches and routers are operational, properly configured, and compliant with DISA STIG requirements; performs regular maintenance, updates, and troubleshooting.

• Configures, maintains, and monitors firewalls, intrusion protection systems, intrusion detection systems, and Cisco Identity Services Engine (ISE) for network access control and authentication, and implements security measures for specialized systems and networks.

• Supports the planning and implementation of enterprise service connections between networks, systems, and applications across domains, facilitating connections for auditing, authentication, secure cloud computing architecture (SCCA), and cross-domain solutions and guards.

• Collaborates with ISSOs and Cybersecurity Services Leads in the Risk Management Framework (RMF) process, providing inputs and documentation, and mentors/trains other NOC staff and Junior Engineers.

Minimum Qualifications:

• BA/BS in field necessary to assume Network Engineer or 4 years of additional experience in lieu of the degree

• 9+ years of experience with 5+ years of relevant Network Engineer experience.

• Deep understanding of networking protocols (TCP/IP, DNS, DHCP, routing protocols) and network security principles.

• Expertise in configuring and managing network devices, including routers, switches, firewalls, and intrusion detection/prevention systems, with hands-on experience with Cisco networking technologies (e.g., IOS, NX-OS) and security appliances (e.g., ASA firewalls, ISE).

• Familiarity with network monitoring and management tools, knowledge of virtualization and cloud networking concepts, and experience with securing classified networks (SIPR, NIPR, JWICS) and implementing DISA STIGs.

• Experience in cybersecurity frameworks and standards (e.g., NIST Cybersecurity Framework, RMF), knowledge of network access control and authentication mechanisms, ability to assess and mitigate network security risks, and DoD 8570.01-M IAT Level II certification.

Preferred Qualifications:

• Master’s degree in Computer Science, IT, or a relevant discipline.

• Experience with cross-domain solutions and guards. Knowledge of cloud computing security architectures (e.g., SCCA).

• Experience with scripting and automation tools for network management. Familiarity with ITIL framework and service delivery concepts. ITIL Foundation certificate.

• Relevant networking certifications (e.g., Cisco CCNP, CCIE, CompTIA Security+).

• Experience at a DoD Combatant Command (e.g., SOUTHCOM, NORTHCOM, CENTCOM, CYBERCOM, INDOPACOM, EUCOM, AFRICOM, STRATCOM, TRANSCOM, SOCOM, SPACECOM) or a component is desired.

Clearance Requirements:

• Must have a current/active Secret clearance.

Physical Requirements:

• Must be able to remain in stationary position for up to 50% of the time.

• Must be able to deliver clear and effective communication verbally and via email, phone, and virtual communication platforms to interface with co-workers and customers.

• Must be able to occasionally move about inside an office environment to access file cabinets, office machinery, and communicate with co-workers.