Sr. Network Engineer

Open Door Family Medical Center provides health care and wellness programs to individuals and families in need throughout Westchester, Putnam and Ulster Counties. A pioneer Federally Qualified Health Center, Open Door provides more than 300,000 patient visits annually and serves nearly 60,000 individual patients who might not otherwise have access. Open Door offers integrated services and a holistic approach to building healthier communities. Primary medical care, dental care, integrated behavioral health care, clinical nutrition, wellness programs, and chronic disease management are the foundation of its clinical programs. Founded as a free clinic in 1972, Open Door’s mission of building healthier communities through accessible, equitable, culturally competent health care has led to site and service expansions. Today, Open Door operates centers in Brewster, Mamaroneck, Mount Kisco, Ossining, Port Chester, and Sleepy Hollow, in addition to eight School-Based Health Centers in the Port Chester and Ossining School Districts, a mobile dental van in Mount Kisco, and a new dental practice in Saugerties, NY. For more information, please visit our website at www.opendoormedical.org. Open Door is currently seeking a Sr. Network Engineer in our Tarrytown office. The Sr. Network Engineer will serve as the technical lead for Open Door’s network infrastructure, with a primary focus on network topology, firewall architecture, security posture, daily operations, and maintenance. This position will lead the design, configuration, monitoring, and maintenance of primarily Fortinet, and some Cisco platforms across a multi-site environment. The ideal candidate brings deep hands‑on networking and firewall experience and strong hands‑on experience in core routing, switching, and network connectivity, supporting secure and reliable connectivity across the enterprise. As the organization’s senior‑most networking resource, this individual will guide network performance and optimization, firewall policy development, threat mitigation operations, and collaborate with support vendors and internal teams to enhance overall network security and availability. Duties And Responsibilities Act as subject matter expert on Fortinet platforms (and Cisco FirePower until phased out), including policy creation, firewall hardening, VPN configuration, NAT, identity management (Fortiauthenticator or ISE) and threat protection features Review and improve the network architecture to reflect modern technologies, best practices, threat factors, and operability. Lead enterprise firewall rule audits, change management, and incident response related to firewall traffic Architect, maintain, and troubleshoot complex site-to-site VPN environments including redundancy and failover testing Deploy, configure, maintain and monitor all active network equipment to ensure smooth network operations, secure environment, and enhanced performance Handle incident and service requests; resolve them within agreed Service Levels Monitor and diagnose faults, provide complete resolution Ensure that systems are optimally configured, and the contained information is current (e.g., proactive system maintenance) Coordinate, test, and implement applications and technology through projects and initiatives Ensure that all relevant information related to Fortinet and network systems is collected, correlated, and analyzed. Prepare and produce root cause analysis reports Create installation and troubleshooting documentation Review, maintain, and create network diagrams to ensure end-to-end paths are documented Perform routine system administration and maintenance on local or remote locations with no impact to the business – some travel locally will be required Participation in support and on‑call rotation, including incident management duties Ensure asset management and inventory are kept up to date within ServiceNow, including service impact analysis. Technical Skills & Qualifications BS degree in Computer Science, Information Systems, or related field preferred Advanced hands‑on experience configuring and managing Fortinet (FortiGate) Cisco FirePower firewalls in production environments experience is beneficial Strong knowledge of NGFW features: IDS/IPS, application control, URL filtering, content inspection Experience with firewall migration, policy optimization, and redundancy design Strong knowledge of dynamic routing protocols (OSPF, EIGRP, BGP) Understanding of advanced routing concepts including routing table optimization, path selection, and SLAs Understanding of layer 2 switching including Spanning Tree, Port Channels, and VLAN trunking Extensive experience in creating, re‑routing, and maintaining VPN tunnels Ability to migrate VPN tunnels and troubleshoot multi‑site connectivity Wireless experience required Fortinet NSE4 or higher strongly preferred; Cisco certification required 3–5 years’ experience working as a network engineer in a similar role ITIL Certification is a plus Network design and maintenance in cloud environments (Azure preferred) Experience And Knowledge Proven experience as a network engineer in a multi‑site environment Expert‑level familiarity with FirePower and FortiGate firewalls: configuration, troubleshooting, policy management, and advanced security features Strong troubleshooting experience of routers, switches, and firewalls Strong understanding of VLANs, routing protocols, and spanning tree Strong knowledge of IP protocols (IPv4, UDP, TCP, DNS, DHCP) Familiarity with network monitoring applications and alert tuning Familiarity with backup and recovery software and methodologies Hands‑on experience in networking, routing, and switching Must have experience in administrative, incident response, and operational responsibilities Visio experience a plus Strong communication and multitasking skills Physical Requirements Manual dexterity and regular hours at computer keyboard Approximately 60% sitting and 40% walking/standing Bending and lifting will be required There are many fantastic benefits to a career at Open Door Family Medical Centers. In addition to working to affect positive change in the health and lives of thousands of residents in Westchester and Putnam counties, Open Door offers its employees a stimulating, diverse and team‑based work environment with comprehensive benefits including medical, dental, life insurance, flexible spending accounts, 403(b) and 401(k), generous paid time off, onsite Wellness facilities, and educational assistance. Aside from excellent benefits, we offer a competitive salary and annual bonuses based on measurable goals and organizational success. If you want to make a difference in the lives of thousands of patients and the health of our communities of Westchester and Putnam counties, and if the position speaks to your capabilities, experience and commitment to improve the health of our communities, please upload your resume and cover letter with salary requirements. Qualified candidates will be contacted by phone and/or email. Open Door is an Equal Opportunity Employer #J-18808-Ljbffr