Senior Network Engineer

ECS is seeking a Senior Network Engineer to work in our Arlington, VA office / remote.  

The Network Engineer will play a critical role in supporting a large-scale federal IT modernization initiative focused on transforming legacy infrastructure into secure, scalable, and cloud-ready network architectures. This position requires collaboration with federal stakeholders, systems integrators, and cross-functional technical teams to design, implement, and maintain enterprise network solutions that meet strict federal security requirements and compliance standards. The successful candidate will contribute to the migration of mission-critical systems while ensuring minimal disruption to ongoing federal operations and maintaining the highest levels of cybersecurity and data protection. 

Responsibilities

• Network Architecture & Design: Develop comprehensive network designs for hybrid cloud environments, including on-premises data centers, public cloud platforms (AWS GovCloud, Azure Government), and secure connectivity solutions that support federal agency requirements 
• Infrastructure Migration: Lead the planning and execution of network infrastructure migrations from legacy systems to modernized platforms, ensuring seamless transition of critical federal services and applications 
• Security Implementation: Design and implement network security controls including firewalls, intrusion detection systems, VPNs, and zero-trust architecture principles in compliance with federal cybersecurity frameworks (NIST, FedRAMP, FISMA) 
• Performance Optimization: Monitor, analyze, and optimize network performance across distributed federal environments, implementing solutions to improve bandwidth utilization, reduce latency, and enhance user experience 
• Documentation & Compliance: Maintain detailed network documentation, configuration management databases, and ensure all implementations meet federal compliance requirements including Authority to Operate (ATO) processes 
• Incident Response: Participate in 24/7 network operations support, troubleshoot complex network issues, and coordinate with federal IT security teams during incident response activities 
• Stakeholder Collaboration: Interface with federal program managers, security officers, and technical teams to translate business requirements into technical network solutions and provide regular status updates on modernization progress 

Qualifications

U.S. Citizen

• Bachelor's degree in Computer Science, Information Technology, or related technical field 
• Minimum 5 years of experience in enterprise network engineering with demonstrated experience in federal or highly regulated environments 
• Ability to obtain and maintain a DHS Public Trust suitability determination