Senior Network Engineer – Certification & Implementation – freelance – onsite

Contract | Comgent | United States

Posted On 10/17/2026

IT Services

Work Experience 8-10 years

City Middletown

State/Province New Jersey

07748

Start Date:

Immediately (pending offer and onboarding)

Duration: 12 months initially

Work Location:

onsite

Customer Site Address: TBC

We are committed to building an inclusive workplace and encourage applications from all qualified candidates.

Comgent is seeking a Network Engineer to certify networking solutions in the laboratory and support their implementation in customer environments. You will combine deep Juniper configuration and troubleshooting skills with test planning, technical documentation and customer-facing delivery across enterprise and service-provider networks.

• Location:
  
  Middletown, New Jersey, USA
• Engagement: freelance / contract
• Work arrangement:
  Onsite
• Schedule:
  
  40 hours per week

• Develop, execute and document test plans for new hardware, software releases and network designs; validate Junos features, interoperability and performance.
• Configure laboratory environments and use test equipment to establish whether solutions meet design and operational requirements.
• Design, configure and deploy routing, switching, security and cloud-managed solutions, supporting onboarding, migrations and operational readiness.
• Develop resilient WAN architectures using Metro Ethernet, Internet and LTE backup services, and troubleshoot complex implementation issues.
• Create certification reports, configuration guides, deployment standards and engineering procedures, keeping test results and recommendations clear and usable.
• Present technical findings and transfer knowledge to engineering, operations and customer teams, coordinating delivery across multiple projects and priorities.
• Provide technical leadership during customer onboarding and migrations, collaborating with customer engineering and implementation teams.

• At least five years of hands-on experience with Juniper routing, switching and security, including both laboratory certification and customer implementations.
• JNCIP-level configuration and troubleshooting proficiency; certification itself is not mandatory.
• Configure and troubleshoot multicast, GRE, IPsec VPNs, NAT, BGP, OSPF, IPv6, CoS, routing instances, J-Flow, Real-Time, RPM, VRRP and SNMP.
• Hands-on platforms include SRX
  300/SRX
  400 and mid-range SRX; MX204/MX301/MX304/MX240/MX480; EX3400/EX4000/EX4650; and QFX
  5120.
• Experience configuring, deploying, monitoring and supporting Mist WAN Assurance and Mist Switch Assurance environments.
• Experience using Spirent Test Center and PRTG Network Monitor.
• A degree in Computer Science, IT or Engineering, or equivalent experience.
• Juniper certifications; SD-WAN, Metro Ethernet and LTE/5G resilient WAN experience

You should be able to design, build, validate and deploy solutions independently, with strong analytical, consulting and presentation skills. Clear communication with engineering, operations and customer audiences is essential. JNCIP-level proficiency is required; a certificate is not mandatory.