Sr. Network Engineer

We are seeking a Senior Network Test & Certification Engineer with deep expertise in network modeling, simulation, cloud, and automation, and the ability to leverage Generative AI (GenAI) technologies to streamline testing workflows, accelerate certification processes, and optimize network designs. This position plays a critical role in ensuring all network changes are thoroughly validated for performance, reliability, and compliance before deployment into production.

In this role, you will collaborate closely with Global Network Engineering and Operations teams to test and certify network changes and new designs using advanced network modeling tools. Acting as a technical specialist, you will work independently or as part of a team, requiring only minimal guidance in complex scenarios.

Some travel (up to 10%) may be required for training, project‑related activities, and vendor engagements.

• Conduct pre‑implementation testing of network change scripts using Riverbed’s Net Planner and EVE‑NG modeling tool.
• Develop, execute, and automate test plans to validate cloud‑based network architectures, connectivity, and security across platforms such as AWS, Azure, and Google Cloud.
• Test the change scripts, document and publish test results from testing, and review findings with stakeholders.
• Evaluate emerging GenAI tools to streamline workflows and enhance overall efficiency.
• Automate repetitive tasks to improve productivity and reduce manual effort.
• Leverage network modeling technologies to test network designs, optimize network infrastructures in alignment with industry best practices.
• Build network models to simulate production environments prior to test pre‑change and post‑change network state.
• Gather and analyze network and application data to support accurate simulation model creation and testing.
• Perform network design analysis and validate configurations to ensure optimal performance and catch any configuration issues prior to the change.
• Collaborate with cross‑functional teams including Global Network Engineering, Global Network Architecture, and Global Network Operations to ensure alignment with design requirements.
• Partner with project managers to ensure timely completion of testing and certification activities without impacting project timelines.

This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager.

• 2+ years of relevant work experience and a Bachelors degree, OR 5+ years of relevant work experience

• 3 or more years of work experience with a Bachelor’s Degree or more than 2 years of work experience with an Advanced Degree (e.g. Masters, MBA, JD, MD)
• Strong network engineering expertise with experience in design, configuration, and troubleshooting of complex network infrastructures.
• In‑depth knowledge of TCP IP and routing protocols including MPLS, BGP, OSPF, RIP, and EIGRP.
• Proficient in advanced networking technologies: IPSec, SSL, HSRP, VRRP, VXLAN, MLAG, NAT, MPLS, VPN, EVPN, SDN and Load Balancing.
• Extensive hands‑on experience with Arista, Juniper, Cisco platforms, and F5 Big‑IP load balancers.
• Skilled in network simulation and modeling tools including EVE‑NG, Cisco Modeling Lab (CML), and Riverbed Net Planner NetIM.
• Strong knowledge of AWS, Azure, and Google Cloud networking services, including VPC design, subnets, routing, load balancing, VPN, Direct Connect, and Express Route.
• Strong understanding of network monitoring and analysis tools: SNMP, Net Flow, and flow analysis.
• Proficient in automation and scripting using Python, Ansible, GIT, Jenkins, REST API, gRPC.
• Experienced with NETCONF, YANG, JSON, XML, YAML for network automation and configuration management.
• Excellent analytical skills for interpreting large datasets into actionable recommendations and solutions.
• Proven ability to deliver results under tight deadlines, including rapid turnaround of network models.
• Strong team collaboration skills with the ability to work cross‑functionally and communicate effectively with both technical and non‑technical stakeholders.
• Hands on experience with other modeling tools like EVE‑NG, Cisco CML
• Advanced Network…