Senior Network Engineer (Active Secret Clearance)

Job Title: Senior Network Engineer (Active Secret Clearance) Location: Washington DC, District Of Columbia Type: Contract Work Model: Onsite Security Clearance: Secret clearance

Overview

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Responsibilities

• Assess current network architecture, device configurations, routing domains, VLANs, dependencies, and operational constraints; compare documented designs with observed behavior.
• Diagnose and remediate multicast and video-transport issues through IGMP/PIM analysis, routing and switching review, packet capture, and traffic-path analysis.
• Analyze transport across encrypted links, including MTU and fragmentation, path symmetry, QoS markings, latency, packet loss, and multicast or unicast behavior.
• Develop corrective actions with customer stakeholders, document proposed changes and rollback considerations, and implement approved changes during authorized maintenance windows.
• Plan and conduct end-to-end validation, including operational testing with relevant application and video systems; support post-implementation issue resolution.
• Co-lead secure network integration design with the security engineer and review high- and low-level designs, network diagrams, and future-state documentation.
• Maintain accurate configuration records, technical findings, validation evidence, and sustainment guidance; contribute to customer knowledge transfer.

Requirements

• Active CCIE Enterprise Infrastructure certification Is good to have
• Demonstrated expertise in enterprise routing and switching, multicast networking, packet-capture analysis, and video-transport troubleshooting.
• Experience analyzing IGMP and PIM behavior, multicast forwarding, VLAN and routing design, and network performance across complex paths.
• Ability to assess network changes, document technical findings, and validate end-to-end service behavior in production or mission-critical environments.
• Must be a U.S. person and hold an active Secret clearance; must meet applicable secure-facility access requirements.
• Ability to work on site at a secure customer facility.

System One, and its subsidiaries including 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.

#LI- Ref: #404-IT Pittsburgh