Granite delivers advanced communications and technology solutions to businesses and government agencies throughout the United States and Canada. We provide exceptional customized service with an emphasis on reliability and outstanding customer support and our customers include over 85 of the Fortune 100. Granite has over $1.85 Billion in revenue with more than 2,100 employees and is headquartered in Quincy, MA. Our mission is to be the leading telecommunications company wherever we offer services as well as provide an environment where the value of each individual is recognized and where each person has the opportunity to further their growth and achieve success. Granite has been recognized by the Boston Business Journal as one of the "Healthiest Companies" in Massachusetts for the past 15 consecutive years. Our offices have onsite fully equipped state of the art gyms for employees at zero cost. Granite's philanthropy is unparalleled with over $300 million in donations to organizations such as Dana Farber Cancer Institute, The ALS Foundation and the Alzheimer's Association to name a few. We have been consistently rated a "Fastest Growing Company" by Inc. Magazine. Granite was named to Forbes List of America's Best Employers 2022, 2023 and 2024. Granite was recently named One of Forbes Best Employers for Diversity. Our company's insurance package includes health, dental, vision, life, disability coverage, 401K retirement with company match, childcare benefits, tuition assistance, and more. If you are a highly motivated individual who wants to grow your career with a fast paced and progressive company, Granite has countless opportunities for you. EOE/M/F/Vets/Disabled General Summary of Position: We are seeking a highly skilled and motivated Network Security Engineer III to join our team. The successful candidate will be responsible for designing and building complex multi-vendor network solutions to support our North American business customers and maintain our core infrastructure. This role requires in-depth knowledge of various network technology and vendor implementations including Fortinet, Cisco. The ideal candidate will have strong expertise in routing protocol design, security, sd-wan implementations, and comprehensive documentation skills. Duties and Responsibilities: Design, implement, and maintain complex multi-vendor network solutions for business customers. Collaborate with cross-functional teams to assess network requirements and develop appropriate solutions. Configure and troubleshoot network devices, including routers, switches, firewalls, and other network appliances. Develop, maintain, iterate and improve internal reference architecture. Ensure network security by implementing and managing firewalls, VPNs, and other security measures. Develop and maintain detailed network documentation, including design diagrams, configuration guides, and standard operating procedures. Monitor network performance, identify issues, and implement solutions to optimize network efficiency. Provide technical support and guidance to customers and internal teams. Stay updated with the latest industry trends and technologies to ensure network solutions are current and effective. Participate in on-call rotations and respond to network emergencies as needed. Operate and maintain vendor specific core infrastructure including tracking licensing, tracking, planning and conducting firmware upgrade.

Required Qualifications: Minimum of 5-8 years of experience in network and security engineering. Proficiency in designing and implementing network solutions using vendors such as Fortinet, Cisco. Strong understanding of routing protocols (e.g., BGP, OSPF) and VPN tunnels. Experience with network security principles and practices, including firewalls, VPNs, and intrusion detection/prevention systems. Excellent troubleshooting and problem-solving skills. Ability to create and maintain detailed network documentation. Strong communication skills and ability to work effectively in a team environment. Experience with Network Automation/DevOps including familiarity with Python, CI/CD tools and scripting large deployments/complex changes. Relevant certifications such as NSE 7, CCNP, or equivalent. Experience in a customer-facing role, providing technical support and solutions. Experience operating hypervisors, on prem and in the cloud. Experience operating the Fortinet product suite: Fortimanager, Fortianalyzer, etc.

Preferred Qualifications: Preferred 8-12 years of experience in network and security engineering. Extensive familiarity with the Fortinet product offering. Experience operating and maintaining data center grade Fortinet equipment, experience planning and conducting upgrade cycles for Fortinet equipment. Experience at Managed Service Providers that support Fortinet. Advanced certifications such as Fortinet NSE 7, CCIE, JNCIP or equivalent. Experience with multi-cloud networking (MCN), unified SASE and network function virtualization (NFV). Knowledge of wireless networking technologies and solutions.

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