Sr. Network Engineer/Admin

Sr. Network Engineer/Admin in Springfield, VA (Day 1 onsite)

6 to 12+ months contract

Job Description:

Role summary:

• Deliver hands on implementation, upgrade, and troubleshooting activities for data center and campus networks. Execute physical installs, cabling, device configuration, cutovers, validation, and post implementation support for project milestones.

Key responsibilities:

• Project delivery: execute network device rollouts, migrations, and lifecycle upgrade tasks per project plan.
• Hands on implementation: rack & stack, structured cabling, patching, and physical infrastructure work in data centers and computer rooms.
• Routing and switching: configure, validate, and troubleshoot OSPF, BGP, EIGRP, STP, VLANs, inter VLAN routing.
• SD WAN: deploy, configure, and troubleshoot SD WAN overlays, policies, and site onboarding.
• Manage switching technologies including STP, VTP, VLAN design, trunking, and inter VLAN routing to ensure stable L2/L3 operations.
• Deploy and support wireless networks including access point configuration, SSID and security policy enforcement, RF troubleshooting, and controller management.
• ACI: implement and troubleshoot Cisco ACI fabric constructs including tenants, VRFs, EPGs, BDs, and contracts.
• Load balancers: working knowledge preferred
• Diagnostics: perform packet captures, interface diagnostics, route analysis, and root cause investigations.
• Documentation and handover: produce configuration backups, network diagrams, cabling maps, runbooks, and project closeout documentation.
• Stakeholder coordination: liaise with project managers, vendors, systems teams, and remote site contacts.
• Travel: perform site visits and implementations as required by project schedules.

Required experience and skills:

• 7 8 years of IT/networking experience with proven hands on work in data center and computer room environments.
• Strong practical experience in cabling, rack & stack, and physical troubleshooting.
• Deep conceptual and hands on knowledge of routing and switching protocols.
• Practical SD WAN deployment and troubleshooting experience.
• Cisco ACI implementation and troubleshooting experience.
• Load balancer configuration and operational experience (L4/L7).
• Proficiency with CLI configuration, packet captures, and network diagnostic tools.
• Ability and willingness to travel for project implementations and upgrades.

Preferred qualifications:

• Certifications such as CCNA/CCNP, Cisco ACI, SD WAN vendor certs, or load balancer vendor certs.
• Familiarity with monitoring and observability tools and formal change control processes.

Working conditions

• Onsite presence at customer location at Springfield, Virginia (Monday Friday) and off hours support as required due to project needs.
• Travel to remote sites for implementation and lifecycle upgrade activities; occasional extended site stays possible.
• Physical tasks include lifting, cabling, and working in confined spaces.

Success criteria:

• Project milestones delivered on schedule with minimal service impact.
• Clear, accurate documentation and configuration handovers.
• Rapid, documented resolution of implementation issues and post cutover incidents.