Senior Network Engineer

System One; Washington (District of Columbia); On-site; USD 110,208,000 - 151,536,000; Full time

Job summary

System One is seeking a Senior Network Engineer for Washington, DC, on-site under a long-term contract. The role focuses on Cisco-based networking, data center infrastructure, security, and high availability across enterprise networks.

Candidates must have 8+ years of experience, deep BGP/OSPF expertise, and hands-on Cisco NX-OS/IOS-XE, Nexus/Catalyst, plus familiarity with SolarWinds and hybrid cloud networking. U.S. citizenship and ability to pass public trust screening required.

Qualifications

• 8+ years of experience managing enterprise-grade routers and switches in large data center environments.

Responsibilities

• Design, implement, and maintain internal and external network infrastructure supporting critical business applications.
• Support day-to-day network operations and ongoing initiatives, including routing and switching troubleshooting, maintenance activities, and operational support.
• Develop and implement new network designs and improvements to enhance performance, resiliency, and scalability.
• Plan and execute network upgrades in collaboration with internal teams.
• Proactively monitor and analyze network health using enterprise monitoring and management platforms.
• Participate in cloud migration and hybrid network initiatives.
• Ensure network availability, security, and compliance with enterprise standards.

Skills

BGP

OSPF

TCP/IP

Cisco NX-OS

IOS-XE

Nexus 9K/7K

Catalyst switches

SolarWinds

Cisco Catalyst Center

Cloud networking

Network design

Tools

Cisco NX-OS

IOS-XE

Nexus/ Catalyst

Job description

Senior Network Engineer

Washington DC - 100% ONSITE

Long Term Contract

Per Federal contract U.S. Citizenship Required

Must be able to pass enhanced background screen (criminal, financial, drug) for Public Trust clearance

W-2 or C2C

This role supports the stability, performance, and security of enterprise and data center network infrastructure. The position is responsible for managing Cisco-based networking environments including Cisco Catalyst and Nexus platforms, wireless networks, ISE, and IPS, while ensuring high availability, security compliance, and continuous operations.

Key Responsibilities:

• Design, implement, and maintain internal and external network infrastructure supporting critical business applications.
• Support day-to-day network operations and ongoing initiatives, including routing and switching troubleshooting, maintenance activities, and operational support.
• Develop and implement new network designs and improvements to enhance performance, resiliency, and scalability.
• Plan and execute network upgrades in collaboration with internal teams.
• Proactively monitor and analyze network health using enterprise monitoring and management platforms.
• Participate in cloud migration and hybrid network initiatives.
• Ensure network availability, security, and compliance with enterprise standards.

Required Qualifications:

• Minimum of 8 years of experience supporting enterprise grade routers and switches in large data center environments.
• Expert-level knowledge of BGP and OSPF, including traffic engineering, route optimization, and failover design.
• Strong expertise in TCP/IP troubleshooting and packet analysis.
• Hands-on experience configuring and supporting:
• BGP, OSPF, and STP on Cisco NX-OS and IOS-XE platforms
• Cisco Nexus (9K, 7K) and Catalyst switches and routers
• Proven experience designing, planning, testing, implementing, and troubleshooting large-scale data center networks.
• Experience with network management and monitoring tools, such as SolarWinds and Cisco Catalyst Center.
• Experience with cloud networking and hybrid network architectures.

Candidates should be able to clearly articulate and provide examples of:

• Designing and implementing BGP and/or OSPF routing architectures
• Troubleshooting complex routing issues in production environments
• Supporting or leading data center network deployments or migrations
• Real-world scenarios involving failover, convergence, and traffic optimization

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.