Sr. Network Engineer

CONCEPT SOLUTIONS LLC•Washington, DC, DC

3d•$140,000 - $160,000•Onsite

About The Position

A highly respected federal contractor is seeking a Senior Network Engineer to support a mission-critical government communications and operational continuity program within a major civilian federal agency. This organization is responsible for maintaining secure, resilient, and uninterrupted communications capabilities for leadership during emergencies, national events, infrastructure disruptions, and continuity operations. This role supports enterprise-scale communications systems essential to operational awareness and rapid service restoration. The Senior Network Engineer will serve as a senior technical leader responsible for designing, modernizing, securing, and sustaining highly available enterprise network environments supporting critical government operations. This role requires deep expertise in enterprise networking, infrastructure modernization, security compliance, and incident resolution across complex multi-site environments.

Requirements

Enterprise firewall, switch, and network infrastructure deployment, migration, and upgrades
LAN/WAN architecture and operational support
VPN, VLAN, tunneling, load balancing (including F5), and network monitoring platforms
Build documentation, network diagrams, and data flow management
Federal cybersecurity and compliance implementation in production environments
Cisco networking technologies strongly preferred
Bachelor’s degree in a technical discipline (or equivalent experience)
Minimum 15 years of relevant enterprise network engineering experience
Additional experience may substitute for degree requirements
Proven leadership and technical management capabilities
Ability to obtain and maintain a Secret security clearance

Nice To Haves

Cisco certifications such as CCNA or CCNP
Experience with Juniper technologies and certifications
Familiarity with project planning tools such as MS Project

Responsibilities

Serve as a senior technical advisor and subject matter expert for enterprise network engineering initiatives
Lead architecture, design, and implementation of large-scale LAN, WAN, MAN, and hybrid network environments
Drive modernization, optimization, and expansion of enterprise infrastructure, including routers, switches, firewalls, and security platforms
Evaluate emerging technologies and provide strategic recommendations to improve network scalability, resiliency, and operational performance
Support enterprise architecture planning, including segmentation, high availability, cloud integration, and continuity strategies
Analyze network performance degradation through diagnostics, packet analysis, and infrastructure assessments to restore mission-critical services
Diagnose and resolve complex network outages while documenting root causes and preventive recommendations
Proactively monitor enterprise networks and recommend improvements to enhance performance and minimize operational risk
Ensure compliance with federal security and configuration mandates, including OMB A-130, FISMA, and NIST frameworks
Support research, testing, and feasibility initiatives for enterprise infrastructure and operational readiness
Provide mentoring, technical leadership, and guidance to junior engineering personnel
Lead high-priority, time-sensitive infrastructure projects involving multiple stakeholders and mission partners
Provide strategic technical guidance to leadership regarding infrastructure investments, risk mitigation, and modernization priorities
Perform system administration duties as needed
Participate in periodic after-hours/on-call support
Support occasional travel within the National Capital Region based on mission needs