Senior Network Engineer

Leidos Inc; Chantilly (VA); On-site; USD 131,300 - 237,350; Full time

Job summary

Leidos is seeking a Senior Network Engineer to design, migrate, implement, enhance, and maintain LAN/DATACENTER/WAN infrastructure. You will work on network consolidation, architecture updates, and site renovations with engineers on various projects.

The role requires TS/SCI with Poly clearance, hands-on experience with Layer 2/3 routing (BGP/EIGRP/OSPF), data center Nexus tech, Cisco/Juniper/Palo Alto equipment, and monitoring tools such as SolarWinds and SNMP. Occasional travel is expected.

Qualifications

• Bachelor’s degree with 12+ years of relevant experience, or Master’s with 10+ years.
• Clearance: Active Top Secret/SCI with Poly required.
• Hands-on with Layer 2/3, BGP, EIGRP, OSPF; GRE, IPsec, MPLS, DMVPN, VPLS, and VPNs.

Responsibilities

• Provide technical expertise for network integration and consolidation across environments.
• Resolve moderate to complex issues in network hardware and systems upgrades.
• Interface with customers, vendors, and technical staff to analyze requirements.
• Engineer and implement end-to-end technical solutions.
• Lead engineers on projects to deliver finalized solutions.
• Mentor engineers on new technologies and automation.
• Document standards and support network architecture changes.
• Evaluate emerging technologies and make senior recommendations.
• Maintain strong customer service and communication.
• Lead first article work across system environments.

Skills

Team leadership

Communication

Network design

Problem solving

Project coordination

Education

Bachelor’s degree + 12+ years

Master’s degree + 10+ years

16 years experience in lieu

Tools

Nexus data center tech

Cisco/Dual-stack routing

Juniper SRX

Palo Alto firewalls

VMware ESXi

SolarWinds

ISE

Job description

Description

Leidos is looking for a Senior Network Engineer to be part of a team responsible for the design, migration, implementation, enhancement, optimization and maintenance of LAN/DATACENTER/WAN.

This position will work with engineers on various technical projects, including network consolidation and integration, architecture designs and updates, site renovations and relocations.

Primary Responsibilities

• Provide technical expertise and assist with network integration and consolidation efforts across multiple systems environments.
• Address and resolve technical problems of moderate complexity related to the installation and upgrade of network hardware and systems.
• Interface with customers, vendors and technical staff to analyze business and technical requirements.
• Engineer and implement technical solutions from cradle to grave.
• Lead a team of engineers on projects, ensuring proper utilization to deliver finalized technical solutions and implementations.
• Assist/train engineers on new technologies to enhance the organization’s technical expertise.
• Understand and apply software automation tools and programming languages for repetitive tasks.
• Document engineering standards and support the development of network architecture and engineering designs and changes.
• Evaluate current and emerging technologies, conduct technical assessments, and make recommendations to senior engineers.
• Maintain strong interpersonal and customer service skills.
• Effectively complete individual projects and tasks with some oversight.
• Lead first article work on multiple system environments.

Travel: May require occasional travel throughout the continental U.S.

Basic Qualifications

• Bachelor’s degree with at least 12 years of relevant experience, or Master’s degree with 10 years of relevant experience, or 16 years of relevant career experience in lieu of a degree.
• Clearance: Active Top Secret/SCI clearance with Poly is required.
• Layer 2 and Layer 3 hands‑on configuration experience, including dynamic routing protocols such as BGP, EIGRP, and OSPF, and knowledge of GRE, IPSEC tunnels, MPLS, DMVPN, pseudowires, VPLS, and remote site and site‑to‑site VPNs.
• Design and implementation experience with datacenter technologies using Nexus platforms.
• Hands‑on experience with network monitoring, fault management, and performance analysis tools such as SYSLOG, SNMP, SolarWinds, ISE, etc.
• Familiarity with data center infrastructure and experience with Cisco routers, switches, next‑generation firewalls, ESXi, and VMware.
• Experience with Juniper SRX equipment and Palo Alto firewalls for boundary protection mechanisms.
• Knowledge of network security concepts, best practices, and technologies including SSH, IPSec, TACACS, PKI, firewall policies, DNS, Active Directory, and 802.1X.
• Experience engineering solutions with Cisco Call Manager and VTC technologies.
• Excellent written and oral communication skills.
• As a condition of employment, the candidate must pass both a customer‑required medical and psychological screening.

Pay and Benefits

Pay Range: $131,300.00 – $237,350.00. The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation. Additional factors are considered when extending an offer.

Benefits include competitive compensation, health and wellness programs, income protection, paid leave and retirement. For more details, visit www.leidos.com/careers/pay-benefits.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.