Network Engineer

Valiant Solutions, LLC•Lorton, VA

5d•$112,000 - $160,000•Onsite

About The Position

Valiant Solutions is seeking a Network Engineer to support an Intelligence Community customer in Lorton, Virginia. This is a 100% onsite role requiring an active TS/SCI clearance. The Network Engineer will design, implement, and maintain network infrastructure across classified and unclassified environments, supporting high availability, reliability, and security. The role includes hands-on work with Cisco ISE, network access control, routing and switching, and enterprise network deployment, as well as technical leadership and coordination with engineering, deployment, information assurance, security, and endpoint teams. The position leads network deployments across locations and projects, from planning and site surveys through installation, integration, testing, troubleshooting, and post-deployment maintenance. The engineer documents configurations and processes, ensures adherence to security and regulatory requirements, provides mentorship to junior staff, and may provide on-call support for critical emergencies. Valiant Solutions provides cybersecurity and IT services to federal civilian, defense, and national security customers. The company describes an employee-centric culture, offers benefits and rewards for earning industry certifications, and provides opportunities for career growth. The anticipated base salary range is $112,000 to $160,000.

Requirements

Active TS/SCI clearance.
Bachelor's degree in a technology-related field.
At least 8 years of network engineering experience in an enterprise environment, or equivalent experience.
Experience designing, deploying, and maintaining Cisco ISE in classified enterprise-scale environments.
Experience configuring and optimizing 802.1X authentication for wired networks.
Experience integrating ISE with Active Directory, PKI, and other identity sources.
Experience implementing and managing MAC Authentication Bypass.
Knowledge of network access policies, VLAN assignments, and posture assessments.
Experience troubleshooting authentication with tools such as Wireshark, Splunk, and ISE logs.
Solid experience with routing and switching technologies such as Cisco or Juniper.
In-depth knowledge of Layer 2 and Layer 3 network protocols and technologies, including TCP/IP, iBGP, eBGP, OSPF, VLANs, 802.1q, and LAG.
Knowledge of network security best practices.
Experience with network management tools and network monitoring systems.
Proven leadership skills and experience managing cross-functional teams or projects.
Strong problem-solving and analytical skills, with a proactive approach to network deployment challenges.
Strong written and verbal communication skills and ability to interact with stakeholders at all levels.

Nice To Haves

IAT Level II baseline certification as defined by DoD 8570.01, such as Security+.
Cisco and/or Juniper certifications.
Experience supporting classified networks.
Experience ensuring Service Level Agreement compliance.
Knowledge of or experience supporting DHS programs.
COMSEC experience.
SolarWinds experience.
Network automation experience.

Responsibilities

Lead and manage network solution deployments across geographic locations, delivering projects on time, within scope, and within budget.
Oversee installation, configuration, and testing of network hardware and software, including routers, switches, and firewalls.
Coordinate with engineering, deployment, information assurance, and other cross-functional teams to integrate network systems.
Ensure network designs and deployments follow security best practices and provide redundancy, scalability, and fault tolerance.
Create project plans, manage timelines, track progress, and resolve issues throughout the deployment lifecycle.
Design, engineer, and implement LANs, WANs, data center networks, and other network technologies.
Configure and troubleshoot networks to maintain optimal performance and security.
Conduct risk assessments and implement mitigation strategies.
Maintain documentation of deployment processes, configurations, and troubleshooting logs.
Conduct site surveys to assess readiness and deployment requirements.
Provide technical leadership and mentorship to junior engineers and deployment staff.
Collaborate with network architects to align designs with deployment requirements.
Troubleshoot and resolve issues during deployment and post-deployment.
Ensure compliance with industry standards and regulatory requirements.
Perform maintenance and firmware upgrades on critical network infrastructure.
Create engineering documentation for network projects.
Provide on-call support and response for critical system emergencies as required.
Design, deploy, and maintain Cisco ISE solutions for classified enterprise-scale environments.
Configure and optimize wired 802.1X authentication and integrate ISE with Active Directory, PKI, and other identity sources.
Implement and manage MAC Authentication Bypass for devices that do not support 802.1X.
Develop and maintain network access policies, VLAN assignments, and posture assessments.
Troubleshoot authentication issues using Wireshark, Splunk, and ISE logs.
Document configurations, processes, and best practices for operational handover.

Benefits

Choice of medical plans, including an HSA option and PPO, with company contributions.
Dental and vision coverage for employees and their families.
Company-paid life, short-term disability, and long-term disability insurance.
Optional supplemental life, accident, and critical illness coverage.
401(k) retirement plan with company match.
Paid time off that increases with years of service and paid federal holidays.
Paid certifications and professional development.
Valiant University training portal.
Flexible spending accounts.
Wellness and fitness program.
Referral bonuses.
Rewards for earning industry certifications.