Network Engineer

Job Title: Network Engineer
Job Location: Manassas, VA
Eligibility/Clearance: Must be US Citizen or Green Card Holder

Key Responsibility
- Support and troubleshoot Cisco enterprise network infrastructure.
- Configure, maintain, and troubleshoot Layer 2 and Layer 3 switches.
- Support VLANs, trunking, STP, routing, ACLs, DHCP, DNS, and related
network services.
- Monitor network devices, interfaces, links, and performance using
SolarWinds Orion.
- Configure and maintain Orion alerts, thresholds, interface
monitoring, and network availability monitoring.
- Investigate network alerts, outages, packet loss, latency, interface
errors, and performance degradation.
- Perform switch configuration, firmware/software upgrades, backups,
and routine network maintenance.
- Troubleshoot LAN/WAN connectivity and end-user network issues.
- Support network changes through established change-management
processes.
- Maintain network diagrams, device inventories, configurations, and
technical documentation.
- Assist with network refreshes, equipment replacement, deployments,
and infrastructure projects.
- Coordinate with infrastructure, cybersecurity, service desk,
vendors, and other technical teams as required.
- Respond to operational incidents and participate in troubleshooting
and root-cause analysis.
- Ensure assigned tasks and incidents are completed independently with
appropriate documentation and follow-through.

Required Qualifications
- 3–5+ years of hands-on enterprise networking experience.
- Strong experience with Cisco switches and enterprise network
infrastructure.
- Solid understanding of Layer 2 and Layer 3 networking.
- Experience with VLANs, STP/RSTP, trunking, EtherChannel, TCP/IP,
subnetting, and routing.
- Working knowledge of routing protocols such as OSPF and BGP.
- Hands-on experience with SolarWinds Orion or a comparable network
monitoring platform.
- Strong network troubleshooting and diagnostic skills.
- Experience working within incident, problem, and change-management
processes.
- Ability to independently manage assigned work and troubleshoot
issues through resolution.

Preferred Qualifications
- CCNA or CCNP certification.
- Experience supporting Cisco Catalyst switching environments.
- Experience with firewalls, wireless networking, VPNs, and WAN
technologies.
- Familiarity with SolarWinds NPM/NCM and network configuration
management.
- Experience supporting highly available or critical infrastructure
environments.
- Familiarity with cybersecurity practices, network segmentation, and
access controls.
- CISCO Next-generation Firewall (NGFW)

EDUCATION REQUIREMENTS
- Bachelor’s degree in computer science, computer networks, or a
related field.
- Certification in related fields (CCNA, CCNP) required. Security and
Cisco Certified Internetwork Expert (CCIE), a plus.

Arena Technical Resources, LLC, (ATR) is an Equal Opportunity Employer
(EOE) who will provide equal employment opportunity to employees and
applicants for employment without regard to  race, ethnicity, religion,
color, sex, pregnancy, national origin, age, veteran status, ancestry,
sexual orientation, gender identity or expression, marital status,
family structure, genetic information, or mental or physical disability