Principal Network Engineer

About the role

Sun Life U.S. is one of the largest providers of employee and government benefits, helping approximately 50 million Americans access the care and coverage they need. Through employers, industry partners, and government programs, Sun Life U.S. offers a portfolio of benefits and services, including dental, vision, disability, absence management, life, supplemental health, medical stop-loss insurance, and healthcare navigation. We have more than 6,400 employees and associates in our partner dental practices and operate nationwide.

Responsibilities

• Provide Tier 3 support for enterprise LAN/WAN environments, including routers, switches, firewalls, and network security devices
• Design, implement, and maintain network infrastructure solutions aligned with established architectural standards
• Troubleshoot complex network issues and drive timely resolution to ensure service stability and performance
• Execute network changes, upgrades, and patching activities through formal change management processes
• Optimize network performance, reliability, and cost efficiency across infrastructure components
• Contribute to the delivery of moderately to highly complex projects, including planning, implementation, and validation
• Partner with internal teams (e.g., security, infrastructure, application teams) to support integrated solutions
• Design and support AWS networking solutions, including: Amazon VPCs, Transit Gateway, Direct Connect, Site-to-Site VPN, Route Tables and Network ACLs, Security Groups, Load Balancing, and Hybrid Connectivity
• Document network designs, configurations, procedures, and support models to ensure operational continuity
• Provide technical guidance and mentorship to junior team members and support knowledge sharing within the team

Qualifications

• 5+ years of experience in network engineering within enterprise environments
• Current AWS Certified Advanced Networking – Specialty certification
• Strong hands-on experience with:
• Cisco routing and switching (IOS, Nexus, enterprise hardware platforms)
• Network protocols (e.g., BGP, MPLS, EIGRP)
• Administering and troubleshooting WatchGuard firewall solutions, VPNs, and network security technologies
• Advanced proficiency in Infrastructure as Code (IaC) using Terraform or AWS CloudFormation, paired with experience utilizing Generative AI developer tools (e.g., Amazon Q, Amazon Bedrock, or AI coding assistants) to accelerate code generation, automate network compliance validation, and scale CI/CD network deployment pipelines
• Deep expertise designing and optimizing high-performance AWS cloud network architectures tailored for AI/ML workloads. Demonstrated ability to configure and scale data-transfer pipelines to Amazon S3 and compute clusters, managing high-bandwidth, ultra-low-latency traffic patterns
• Knowledge of advanced networking protocols and mechanisms for AI data clusters (e.g., congestion control protocols, minimizing packet loss, and maximizing throughput) to support seamless Large Language Model (LLM) training and inference deployments
• Strong troubleshooting, diagnostic, and problem-solving capabilities
• Knowledge of Zero Trust and modern network security architectures
• Experience supporting and maintaining large-scale LAN/WAN environments
• Strong written and verbal communication skills
• Bachelor’s degree or equivalent experience

Preferred

• Cisco or security certifications (e.g., CCNP, CCIE, CCSE)
• Experience with network security tools (IDS/IPS, SIEM, proxies, etc.)
• Experience with Venafi certificate lifecycle management and PKI administration
• Exposure to virtualization environments (e.g., VMware)

Benefits

Your actual base salary will be determined based on your unique skills, qualifications, experience, education, and geographic location. In addition to your base salary, this position is eligible for a discretionary annual incentive award based on your individual performance as well as the overall performance of the business. We are dedicated to creating a work environment where everyone is rewarded for their contributions.