ECS is seeking a Senior Network Engineer to work in our Washington, DC office. Please Note: This position is contingent upon contract award.
As a Senior Network Engineer supporting the Department of Justice, you will play a critical role in designing, securing, and sustaining complex enterprise and classified network environments. This position leads the planning and architecture of DOJ network infrastructures, oversees enterprise-wide addressing and traffic management, and ensures the reliability of mission‑critical systems such as JUTNet. You will maintain a fully functional lab environment for testing and validation, drive proactive monitoring and incident response efforts, and collaborate closely with cybersecurity, systems engineering, and security compliance teams to uphold the performance, resilience, and security of DOJ networks.
Key Responsibilities:
Salary Range: $150,000 - $160,000
General Description of Benefits
- Must have an active Top-Secret clearance (TS/SCI is preferred)
- Bachelor's degree in computer science, Information Technology, Network Engineering, or a related field (or equivalent combination of education and experience).
- This is 100% onsite
- Minimum of 8 years of progressive experience in network engineering, including hands-on experience with enterprise-level network design, implementation, and management.
- Specific work experience in providing IT program support for the Federal Government is required
- Certifications: Cisco Certified Network Professional (CCNP) or higher Cisco Certified Internetwork Expert (CCIE) – preferred
- CompTIA Network+ or Security+
- ITIL Foundation or higher
- Expert-level knowledge of network routing protocols (BGP, OSPF, EIGRP)
- Proficiency in configuring and managing Cisco routers, switches, and firewalls
- Experience with network monitoring and management tools
- Knowledge of classified network architectures and federal security requirements
- Strong understanding of LAN/WAN, VPN, VLAN, SD-WAN, and wireless technologies
- Familiarity with virtualized network environments (VMware NSX, etc.)
- Experience with network automation and scripting
Top Skills
What We Do
ECS, a segment of ASGN (NYSE: ASGN), delivers advanced solutions and services in cloud, cybersecurity, artificial intelligence (AI), machine learning (ML), application and IT modernization, and science and engineering. The company solves critical, complex challenges for customers across the U.S. public sector, defense, intelligence and commercial industries.
ECS maintains partnerships with leading cloud, cybersecurity, and AI/ML providers and holds specialized certifications in their technologies.
Headquartered in Fairfax, Virginia, ECS has more than 3,400 employees throughout the U.S. and has been recognized as a Top Workplace by The Washington Post for the last five years.









