Network Security Engineer

Network Security Engineer Job ID:

2610162

Location:

Springfield, VA, United States Date Posted:

Mar 11, 2026

Category:

Information Technology Subcategory:

Network Engineer Schedule:

Full-Time Shift:

Day Job Travel:

No Minimum Clearance Required:

Top_Secret Clearance Level Must Be Able to

Obtain:

TS/SCI Potential for

Remote Work:

On-Site Benefits:

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mail Tweet Share on Facebook Share on LinkedIn Apply Now > Job Description Description SAIC currently has an opening for a Network Security Engineer to support the Department of State (DoS) Bureau of Diplomatic Technology (DT). DT provides enterprise architecture design, engineering, operations and maintenance support services for desktops, servers, networks, firewalls, and enterprise applications across the Department. The network security engineer is a specialized network security professional focused on protecting data as it moves across untrusted or public networks. This role sits at the intersection of high-speed networking and heavy-duty cryptography, ensuring that data is encrypted at the hardware level (Layer 2 or Layer 3) without sacrificing network performance.

Description of Duties:

Develop next-generation VPN technology focused on identity-centric, high-performance, and quantum-resistant architectures.

Network Security Deployment:

Design, configure, and install next generation network security devices. Develop Zero Trust Network Access solutions focusing on granular access, continuous verification, and reduced attack surface. Develop network solutions utilizing performance optimized protocols to reduce latency over the wire. Develop Post Quantum Cryptography solutions that integrate quantum resistant algorithms.

Tunnel Management:

Designing and maintaining secure site-to-site tunnels using protocols like MACsec (Layer 2) or IPsec (Layer 3) to protect data in transit.

Latency & Performance Tuning:

Monitoring network throughput to ensure that encryption overhead doesn't cause bottlenecks, especially in high-frequency connections.

Troubleshooting:

Diagnosing "silent" failures where encryption synchronization drops, causing packet loss or network outages.

Qualifications Required Experience/Skills/Attributes:

Bachelors and nine (9) years or more experience; Masters and seven (7) years or more experience ; may accept additional experience in lieu of degree.

Networking Fundamentals:

Expert-level knowledge of switching and routing (BGP, OSPF) and the OSI model, specifically focused on Layer 2 (Data Link) security.

Encryption Standards:

Deep understanding of

AES-256, GCM

(Galois/Counter Mode), Post Quantum Encryption and the impact of MTU/MSS fragmentation caused by encryption headers.

Security Compliance:

Familiarity with FIPS 140-2/3 and Common Criteria requirements for government or financial-grade hardware.

Clearance Requirement:

US Citizenship.

TOP SECRET

(Active) / SCI (Eligibility).

Desired Experience/Skills/Attributes:

Familiarity with DoS environment (data and voice networks, IT security systems, policies and procedures), Foreign Affairs Handbooks (FAHs), Foreign Affairs Manuals (FAMs) preferred. Interpersonal skills include the ability to collaborate effectively, self-awareness, and excellent written and oral communications. Previous COMSEC experience. Overview SAIC accepts applications on an ongoing basis and there is no deadline. SAIC is a premier Fortune 500 mission integrator focused on advancing the power of technology and innovation to serve and protect our world. Our robust portfolio of offerings across the defense, space, civilian and intelligence markets includes secure high-end solutions in mission IT, enterprise IT, engineering services and professional services. We integrate emerging technology, rapidly and securely, into mission critical operations that modernize and enable critical national imperatives. We are approximately 24,000 strong; driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.5 billion. For more information, visit saic.com. For ongoing news, please visit our newsroom.

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