Mid or Senior Level Network Engineer
Lorton, VA
Experience: 4
Education: BS
Category: Information Technology
Contractor Work Model: Onsite
Brand: System One
Compensation Range: 77.75 - 110.00 Per Hour
Job ID: 378566
Date Posted: 08/18/2026
Shortcut: http://jobs.systemone.com/ApjBLr
Job Title: Mid or Senior Level Network Engineer
Location: Lorton VA
Type: Contract To Hire
Compensation: $77.75 - $120.00/hr. (Depending on years of experience)
Work Model: Hybrid
Hours: 40.0
Security Clearance: Active TS with SCI eligibility
Overview
This is a senior-level network engineering role supporting a mission-critical government environment. The position focuses on network infrastructure management, network security, cross-domain solutions, and modernization efforts, while serving as the primary technical expert for enterprise networking operations.
Responsibilities
- Support the ITP network infrastructure, perform routine maintenance activities, and provide guidance on upgrades and system recapitalization.
- Oversee High Speed Guard Cross Domain solution supporting data transfer between multiple classification domains.
- Support all documentation to effectively capture the configuration baseline.
- Design and support system recapitalization plans to accommodate capacity growth and changes as directed by the customer.
- Serve as the subject matter expert on all ITP network infrastructure.
- Bachelor's degree with at least 8+ years of relevant experience or Master's degree with 6+ years of relevant experience.
- Cisco Certified Network Professional (CCNP) certification.
- Experience deploying and managing LAN and WAN Switches and Firewalls, including Cisco 2900, 4500, 9300, 9400, 6800, Nexus 9000, and Cisco Firepower, ASA.
- Strong knowledge of defense-in-depth principles, network security architecture, and common security elements.
- Experience with installation, configuration, and maintenance of network equipment.
- Experience with incident lifecycle management, incident response, and mitigation strategies.
- Network management experience with Solarwinds, WhatsUP Gold, NetQoS, NetBrain; familiar with VMWARE, Linux, Microsoft Server, and Active Directory.
- Ability to build firewall policies and optimize rules for threat prevention.
- Support for ATO reviews and audits.
- Ability to obtain DHS EOD SCI clearance.
- Education: BS degree; preferred Master's in IT Management, Engineering, or related field.
- Strong communication skills and ability to work collaboratively in a team environment.
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.
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