Hybrid Senior Network Engineer

at Westfield Health

• Job title: Senior Network Engineer
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Ansible, AWS, Azure, Python
• Location requirements: Hybrid, Westfield Center, United States

About the role

• Senior Network Engineer designing and implementing solutions for Westfield’s complex network environment. Mentoring Network Engineers and ensuring network security and performance.

Responsibilities

• Designs and implements solutions for enterprise LAN, WAN/SD-WAN, wireless, and security using:
• 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.

Requirements

• 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.
• Industry certifications such as CCNA/CCNP, PCNSE, JNCIS, or Arista ACE (or comparable experience) is preferred.

Benefits

• Applicants must be currently authorized to work in the United States on a full-time basis without employer sponsorship.