Senior Systems Engineer

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

Responsibilities include but are not limited to:

• Coordinates the procurement, shipping, installation, configuration, and integration of multi-network systems for a global USMC program, driving a seamless "DISA-to-Desktop" architecture.
• Plans and designs the connectivity of enterprise system and network assets, ensuring compliance and secure operations across classified networks and domains.
• Ensures all systems, servers, network switches, and routers are installed, properly configured, and strictly compliant with DISA STIG requirements.
• Supports the planning and implementation of enterprise service connections across domains, facilitating secure cloud computing architecture (SCCA), cross-domain solutions, and guards.
• Collaborates with ISSOs and Cybersecurity Services Leads in the Risk Management Framework (RMF) process.
• Creates diagrams and documentation to facilitate SCI and SAP accreditations.

Minimum Qualifications:

• BA/BS in a relevant technical field AND nine (9) or more years of experience in systems engineering, systems administration or network engineering.

+ OR high school diploma and thirteen (13) or more years of relevant experience.

• Deep understanding of systems integration, networking protocols (TCP/IP, DNS, DHCP), routing, and comprehensive network security principles.
• Expertise in configuring and managing enterprise devices (routers, switches, firewalls) with hands-on experience in Cisco technologies (e.g., IOS, NX-OS) and security appliances (e.g., ASA firewalls, ISE).
• Proven experience securing classified networks (SIPR, NIPR, JWICS) and implementing DISA STIGs; strong familiarity with NIST frameworks and RMF.
• Must hold an active DoD 8570.01-M IAT Level II certification at minimum.

Desired Qualifications:

• Master’s degree in Computer Science, IT, Systems Engineering, or a relevant discipline.
• Experience implementing multi-vendor VoIP and VTC products in RMF environments.
• Experience with scripting/automation tools for system management; familiarity with the ITIL framework (ITIL Foundation certificate desired).
• Relevant high-level networking or systems certifications (e.g., Cisco CCNP, CCIE, CompTIA Security+, Microsoft, or Red Hat).
• Prior experience supporting a USMC enterprise program, or experience at a DoD Combatant Command (e.g., INDOPACOM, CENTCOM, CYBERCOM).

Clearance Requirements:

• Must have a current/active TS/SCI clearance
• Must be eligible to obtain Special Access Program (SAP)

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.
• This position requires travel up to 10%