Senior Cybersecurity Engineer – Networking

Amentum

full-time

Posted on: 10/24/2025

Location Type: Remote

Location: Remote • 🇺🇸 United States

✨ AI Apply

Senior

CloudCyber SecurityDNSFirewallsTCP/IP

About the role

Review, design, implement and support all aspects of network security, in close collaboration with IT and Projects.
Maintain and support security related networking systems, e.g. boundary protection, firewalls, DNS/URL filtering, global VPN.
Ensure availability of cyber-related network services, e.g. work closely with network engineering to design failsafe solutions.
Participate in 2nd-level Security Operations Center (SOC) activities, e.g. respond to critical security incidents escalated by an MSSP, including non-network related incidents.
Design and improve security controls protecting our users, information systems, enterprise applications and data.
Analyze, troubleshoot and investigate security-related IT system anomalies based on platform reporting, network traffic, log files and automated security alerts.
Optimize processes/tooling and automate recurring tasks.
Provide security oversight and coordination for changes to the IT landscape.
Provide off-hours support on an infrequent, but as needed basis.
Maintain and update relevant system and process documentation.
Cover other cybersecurity related assignments as needed.

Associate’s degree plus at least 6 years hands-on experience as a cybersecurity network engineer; a Bachelor’s degree in Computer Science, Information Systems or related field plus 5 years of relevant experience; 4 years with a Master’s.
Current Security+ and Network+; or similar industry certification.
Must be a U.S. Citizen.
US Remote-Telework role (you must live within the US to work remotely).
Expert experience in network protection and related concepts, e.g. boundary protection, network segmentation, firewalls, endpoint security, threat hunting.
Deep understanding of network protocols (e.g. TCP/IP, DNS, DHCP, BGP, OSPF, VLANs).
Strong experience in network architectures (e.g. LAN, WAN, VPN, SD-WAN, Cloud).
Demonstrated skills to debug network related issues, including performance.
Good understanding of data protection (encryption PKI/SSL/TLS, authentication and access control).
Ability to travel up to 10%.

Benefits

Tip: use these terms in your resume and cover letter to boost ATS matches.

network securityfirewallsVPNnetwork segmentationendpoint securitythreat huntingnetwork protocolsnetwork architecturesdata protectiondebugging

collaborationtroubleshootinganalytical skillsprocess optimizationdocumentation

Security+Network+