Westfield Insurance · 2 days ago
Network Senior Engineer
Westfield Center, OH
Full-time
Hybrid
Senior Level
5+ years expWestfield Insurance is a global leader in property and casualty insurance, and they are seeking a Senior Network Engineer to design, implement, and support complex network environments. This role will lead troubleshooting efforts, mentor junior engineers, and drive improvements in network reliability and security.
Insurance
No H1B
Responsibilities
Designs and implements solutions for enterprise LAN, WAN/SD-WAN, wireless, and security using:
Arista switching and routing in data center and campus environments
Juniper wireless infrastructure for corporate and guest connectivity
Palo Alto firewalls for perimeter, data center, and remote-access security
Develops high-level and low-level designs (HLD/LLD), implementation plans, and rollback procedures for projects and major changes
Owns one or more network domains (e.g., WAN/SD-WAN, wireless, campus, network security) and acts as subject matter expert
Leads daily operational support, maintenance, and administration for assigned network domains
Serves as a Tier-2/Tier-3 escalation point for complex incidents and performance issues
Performs advanced root cause analysis, documents findings, and drives corrective and preventative actions
Conducts capacity and utilization analysis, recommending and implementing upgrades or optimizations
Participates in on-call rotation and after-hours maintenance windows as required
Designs and maintains network security standards, including segmentation, security zones, and firewall policies on Palo Alto platforms
Defines and maintains baseline configurations and hardening standards for Arista, Juniper wireless, and SD-WAN components
Ensures network solutions comply with Information Security policies and regulatory requirements
Develops and improves network automation, templates, and tools (e.g., Ansible, Python, CI checks for configs) in partnership with software engineers
Identifies opportunities to improve resiliency, performance, and supportability, and leads the implementation of those improvements
Contributes to the selection and integration of network monitoring, logging, and management tools
Provides technical leadership for network-related projects and initiatives
Participates with integration of networking services in Azure and AWS
Mentors Network Engineers by reviewing designs and changes, sharing troubleshooting techniques, and providing guidance on best practices
Contributes to and helps enforce network standards, documentation quality, and change discipline
Qualification
Required
Bachelor's degree in Information Systems, Computer Science, or related field, or equivalent work experience
Typically 5–10 years of experience in network engineering in medium to large enterprise environments
Strong hands-on experience with Layer 2/3 enterprise networking (VLANs, STP, routing protocols such as OSPF and BGP, QoS)
Strong hands-on experience with Arista switches/routers in data center and campus roles
Strong hands-on experience with Juniper wireless controllers and access points
Strong hands-on experience with Palo Alto firewalls, VPNs, and security policies
Strong hands-on experience with SD-WAN technologies and policy-based routing
Strong knowledge of Azure and AWS networking services
Proficiency with network monitoring and performance analysis tools
Preferred
Industry certifications such as CCNA/CCNP, PCNSE, JNCIS, or Arista ACE (or comparable experience)
Practical experience with scripting/automation tools (e.g., Python, Ansible, Git-based workflows)
Company
Westfield Insurance
Founded in 1848, Westfield is a global leader in property and casualty insurance, delivering superior risk insights and innovative solutions to customers through a diverse portfolio of insurance products.
1001-5000 employees
Funding
Current Stage
Late StageLeadership Team
Joe Kohmann
Chief Financial Officer & Treasurer
Amy Larsh
Executive Assistant to the President, CEO & Board Chair
Company data provided by crunchbase