Senior Network Engineer

Markon; Chantilly (VA); On-site; USD 170,000 - 210,000; Full time

Job summary

Markon is seeking a Senior Network Engineer to support an Intelligence Community client in Chantilly, Virginia. This position will develop, engineer, and deploy technical solutions within a dedicated mission network while providing technical leadership across functional areas to deliver secure, mission-focused capabilities.

The Network Engineer will work alongside network and systems engineers to design and sustain complex network architectures addressing collaboration, connectivity, and

Qualifications

• Active TS/SCI with Full-Scope Project (preferred from this client) is required.
• Recent hands-on experience within 3 years with Cisco Data Center, WAN, LAN, and Client Access tech.
• Experience building and maintaining Cisco ACI networks and related security features.
• Hands-on with Cisco IOS-XE, NX-OS and firewall/VPN technologies (FTD/ASA).
• Strong leadership to mentor and transfer knowledge to others.

Responsibilities

• Design and deploy Data Center, LAN, WAN, and Client Access network architectures.
• Engineer, build, and maintain mission networks and systems.
• Validate and deploy network solutions within mission environments.
• Perform full lifecycle management of network systems and sustainment.
• Monitor, troubleshoot, and resolve complex network issues.
• Provide technical guidance across networking and related teams.

Skills

Network design

Cisco Data Center

Security engineering

Team leadership

Troubleshooting

Education

Bachelor's degree in a technical discipline

Associate's degree with 13+ years experience

No degree with 15+ years experience

Tools

Cisco IOS-XE

NX-OS

ACI networks

Firepower / ASA

Job description

Markon is seeking a Senior Network Engineer to support an Intelligence Community client in Chantilly, Virginia. This position will develop, engineer, and deploy technical solutions within a dedicated mission network while providing technical leadership across functional areas to deliver secure, mission-focused capabilities. The Network Engineer will work alongside network and systems engineers to design and sustain complex network architectures addressing collaboration, connectivity, and data-protection challenges.

NOTE: This position requires infrequent CONUS travel to various sites, as directed by the client.

Responsibilities

• Design and develop Data Center, LAN, WAN, and Client Access network architectures supporting mission requirements.
• Engineer, build, and maintain Data Center, LAN, WAN, and Client Access networks and systems.
• Integrate, test, validate, and deploy network solutions within mission environments.
• Perform full lifecycle management of network systems, including design, build, deployment, maintenance, and sustainment.
• Monitor network environments and troubleshoot complex technical and operational issues.
• Provide technical validation of proposed network designs and ensure solutions incorporate program and engineering best practices.
• Provide technical guidance and leadership across network engineering and related functional areas.
• Implement appropriate IT and cybersecurity best practices throughout network design and deployment.
• Support highly available network architectures and associated implementation and deployment activities.
• Collaborate with network engineers, systems engineers, project management, and other technical stakeholders to deliver integrated solutions.
• Mentor and share technical knowledge with other engineers while maintaining current technical skills and tradecraft.
• Perform additional technical duties as directed by Project Management.

Qualifications

Required

• An active TS/SCI with a FSP (preferrably from this client) is required to be considered.
• Bachelor's degree related to the technical discipline and at least 11 years of relevant experience; OR
• Associate's degree and at least 13 years of relevant experience; OR
• No degree and at least 15 years of relevant experience.
• Recent hands‑on experience, within the last 3 years, with Cisco Data Center, WAN, LAN, and Client Access technologies including technologies such as MACsec, HSRP, VRF, VPC, ACLs, BGP, and EIGRP.
• Experience building, deploying, and maintaining Cisco Application Centric Infrastructure (ACI) networks.
• Recent hands‑on experience with Cisco IOS‑XE and NX-OS, customer‑specific transport networks, and firewall/VPN technologies including FTD and ASA.
• Hands‑on experience implementing Sponsor IT and cybersecurity best practices, collaboration/ticketing tools, and high-availability technologies.
• Recent experience, within the last 3 years, providing technical leadership to network engineering teams, with the ability to mentor and transfer technical knowledge to others.
• Strong analytical, problem-solving, interpersonal, and communication skills with the ability to operate independently and within collaborative technical teams.
• Willingness and ability to travel on an infrequent, as‑needed basis, primarily CONUS.

Desired

• Experience building, deploying, and maintaining Cisco ASA firewalls using Firepower Management.
• Recent hands‑on experience with network and application load balancers.
• Experience building, deploying, maintaining, or integrating with Nutanix hypervisor platforms.
• Experience with Palo Alto firewalls and Panorama.
• Experience with SIEM, network monitoring, and security analytics technologies such as Splunk, PCAP, NetFlow, or SolarWinds.
• Experience working with Linux operating systems.
• Demonstrated ability to evaluate emerging technologies, assess their impact on enterprise systems, and incorporate appropriate technologies into technical plans.

Salary Range

USD $170,000.00 - USD $210,000.00 /Yr.The Markon pay range for this position is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Overview

Eager to join a team where your skills are valued, your growth is nurtured, and your impact is profound? Look no further than Markon, a premier consulting firm deeply dedicated to advancing our nation's most critical missions.

At Markon, we don't just offer jobs - we offer opportunities for personal and professional transformation. Empowering our employees to lead, innovate, and excel, we foster an environment where new ideas are not just welcomed but celebrated. As a perennial Washington Post Top Workplace, we prioritize the well-being and success of our team members, ens