Lead Network Engineer - Public Sector

The Role

We are looking for a strong leadership / hands‑on Network Engineer to work with our customers capable of assessing the current state infrastructure, configuration and producing a target‑state vision and strategy with best practice recommendations. Applies advanced engineering and network principles, theories, concepts, technologies to solve unusually complex problems and issues. Interacts and drives vendor requirements, resolution of bug fixes, code upgrades, and vendor development as necessary.

Resolves difficult production/interoperability problems by working with cross functional teams and applying advanced engineering and network principles, theories and concepts. Regarded as a subject matter expert and may act as a technical project leader or provide leadership for the team and/or customer. Self‑motivated with problem solving capabilities, sense of urgency and accountability. The position is hybrid and requires weekly on‑site support.

Required:

Active TS/SCI with ability to sit for a Poly. Candidates will be subject to a background investigation.

• Install, configure, and maintain Juniper network devices, including MX, QFX, and the latest SRX Series security platforms.

• Configure and support security services on SRX devices, including zone‑based policies, firewall filters, IPsec/SSL VPNs, tunneled connections, and MACsec encryption.

• Implement and troubleshoot advanced routing protocols, including BGP (with communities, route filtering, AS‑path, MED), OSPF, IS‑IS, and MPLS/LDP.

• Support and maintain high‑speed fiber optic interfaces, including 10G, 40G, and 100G ports, with experience in LACP, optical diagnostics, and transceiver troubleshooting.

• Manage network performance, availability, and security by applying CoS/QoS, policy‑based routing, and traffic shaping techniques.

• Design and support VPN tunnels and secure transport links between data centers, cloud services, and remote sites.

• Maintain detailed and accurate network documentation, including configurations, IP address management, and topology diagrams.

• Works directly with the customer to advise on requests and make necessary configuration changes.

• Required:
  
  Active TS/SCI with ability to sit for a Poly. Candidates will be subject to a background investigation.

• 7+ years of experience with Juniper platforms (MX, QFX, and new‑generation SRX devices).

• Strong expertise in routing protocols such as BGP, OSPF, IS‑IS, and MPLS, including real‑world experience with complex policy configurations.

• Experience with security and tunneling technologies, including MACsec, IPsec, GRE, and firewall zoning and policies.

• Proficiency working with fiber interfaces at 10G, 40G, and 100G, including troubleshooting transceivers, optical power levels, and port configurations.

• Advanced knowledge of the JUNOS CLI, with familiarity in network automation tools such as Ansible, Junos PyEZ, or other scripting platforms.

• Experience working with network monitoring and management tools, including SNMP, syslog, Net Flow, and centralized logging systems.

• Ability to work well with others to achieve common goals and to foster a cooperative climate, as well as to work independently in the field with little supervision.

• Ability to support after‑hours outages and maintenance actions.

• Excellent oral and written communication skills.

• Additional Preferred Qualifications

• Juniper Networks
  
  Certifications:
  
  JNCIS‑SEC, or higher

This information reflects the anticipated base salary range for this position based on current national data. Minimums and maximums may vary based on location. Individual pay is based on skills, experience and other relevant factors.

Location Based Pay Ranges

$114,082 – $152,109 in these states: MD, VA

Lumen offers a comprehensive package featuring a broad range of Health, Life, and voluntary lifestyle benefits and other perks that enhance your physical, mental, emotional, and financial wellbeing.

If you are selected for a position, there will be a background screen, which may include checks for criminal records and/or motor vehicle reports and/or drug screening, depending on the…