Principal Network Engineer

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 6400 employees and associates in our partner dental practices and operate nationwide.

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Owners mindset architecture design continuous improvement documentation.

The Senior Network Engineer is responsible for the design implementation maintenance and optimization of enterprise network infrastructure. This role provides advanced (Tier 3) technical support and leads the delivery of complex network solutions across LAN/WAN environments.

Operating as a senior individual contributor this role applies deep technical expertise to solve complex problems improve system performance and has an owners mindset to the architecture documentation delivery and continuous improvement of infrastructure initiatives. The role works independently within established standards and actively contributes to day-to-day activities and managed projects.

The ideal candidate will have strong experience designing implementing and supporting enterprise network infrastructure with expertise in Cisco routing and switching technologies WatchGuard firewalls AWS networking services Infrastructure as Code and utilizing Generative Developer tools. This role will be responsible for maintaining network reliability security and performance across both on-premises and cloud environments.

Candidates who possess experience with certificate lifecycle management platforms particularly Venafi will be given additional consideration.

Key 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

Required

• 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
• Experience supporting and maintaining large-scale LAN/WAN environments
• Strong troubleshooting diagnostic and problem-solving capabilities
• Knowledge of Zero Trust and modern network security architectures
• Experience with change management and operational support processes
• Strong written and verbal communication skills
• Bachelors 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)

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We are committed to fostering an inclusive environment where all employees feel they belong are supported and empowered to thrive. We are dedicated to building teams with varied experiences backgrounds perspectives and ideas that benefit our colleagues clients and the communities where we operate. We encourage applications from qualified individuals from all backgrounds.

Life is brighter when you work at Sun Life

At Sun Life we prioritize your well-being with comprehensive benefits including generous vacation and sick time market-leading paid family parental and adoption leave medical coverage company paid life and AD&D insurance disability programs and a partially paid sabbatical program. Plan for your future with our 401(k) employer match stock purchase options and an employer-funded retirement account. Enjoy a flexible inclusive and collaborative work environment that supports career growth. Were proud to be recognized in our communities as a top employer. Proudly Great Place to Work Certified in Canada and the U.S. weve also been recognized as a Top 10 employer by the Boston Globes Top Places to Work for two years in a row. Visit our website to learn more about our benefits and recognition within our communities.

We will make reasonable accommodations to the known physical or mental limitations of otherwise-qualified individuals with disabilities or special disabled veterans unless the accommodation would impose an undue hardship on the operation of our business. Please email to request an accommodation.

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Sun Life will consider for employment all qualified applicants including those with criminal histories in a manner consistent with the requirements of applicable state and local laws including applicable fair chance ordinances.

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