Network Manager - Harrison, New York State

MissionHires; Town/Village of Harrison (NY); On-site; USD 120,000 - 160,000; Full time

Job summary

MissionHires is seeking an experienced Network Manager to lead daily network and systems operations across multiple locations. You will manage a small team of Network Engineers and Administrators, oversee LAN/SD-WAN, and drive infrastructure projects while ensuring security and high availability.

The role requires hands-on Cisco device experience, AD/Windows expertise, and strong communication with stakeholders and vendors. Domestic travel and after-hours on-call are expected.

Qualifications

• 7–10 years of professional experience in network, systems, or technology infrastructure operations or related degree.

Responsibilities

• Lead and develop a team of 2–5 Network Engineers and Administrators, including performance management, coaching, and teamwork.

Skills

Network leadership

Team management

Network security

Routing protocols

Cisco devices

Active Directory

ITIL knowledge

Education

Bachelor's degree in Computer Science

Tools

Cisco Catalyst

ASA Firewall

SD-WAN

Windows Server

Visio

Job description

MissionHires is seeking an experienced Network Manager to lead daily network and systems operations, manage a small team of Network Engineers/Administrators, and drive infrastructure projects across multiple locations. This role is responsible for maintaining secure, reliable, and scalable connectivity, network devices, servers, and supporting technology across on-premises, colocation, hosted, and cloud environments.

Responsibilities:

• Lead and develop a team of 2–5 Network Engineers and Administrators, including performance management, coaching, and fostering teamwork.
• Maintain and administer network infrastructure, including internal and external connectivity, switches, routers, firewalls, servers, iOS versions, and related technology hardware.
• Manage LAN and SD-WAN environments, routing protocols, Cisco Catalyst switches, routers, firewalls, ASAs, and ION devices.
• Monitor, optimize, and tune network and system performance while maintaining high availability and reducing single points of failure.
• Lead technology infrastructure projects, including site build-outs, relocations, system refreshes, network scaling initiatives, and infrastructure deployments.
• Work with internal technology teams, business stakeholders, telecom carriers, and vendors to coordinate projects, resolve issues, and maintain effective communication.
• Participate in and manage availability and security audits; identify, recommend, remediate, and close infrastructure vulnerabilities.
• Maintain and administer intrusion prevention and detection systems.
• Configure, deploy, test, and support infrastructure systems and network solutions across on-premises, hosted, colocation, and hyperscaler environments.
• Lead disaster recovery and business continuity planning, testing, and improvement efforts.
• Maintain accurate network device inventories, vendor contracts, connectivity documentation, and network topology diagrams.
• Recommend, evaluate, and procure network devices, systems, and infrastructure services.
• Support day-to-day technology operations, including incident and ticket resolution, vendor coordination, documentation, and escalation management.
• Participate in an after-hours on-call rotation and provide support for critical incidents.
• Travel domestically as needed to support projects, site deployments, and break/fix efforts.

Requirements:

• 7–10 years of equivalent professional experience in network, systems, or technology infrastructure operations, or a college diploma or university degree in computer science with relevant experience.
• Experience leading or managing network engineering and administration teams.
• Strong expertise in internal and external routing, network security, protocols, connectivity, and enterprise network devices.
• Hands‑on experience with Cisco Catalyst switches, routers, and firewalls; CCNA‑level knowledge is required.
• Configuration‑level knowledge of LAN, SD‑WAN platforms, and routing protocols.
• Administrator‑level knowledge of Active Directory, Windows Server, and Windows desktop environments.
• Experience supporting infrastructure across multiple sites, including data center, on‑premises, colocation, hosted, and cloud environments.
• Ability to manage network scalability, infrastructure resources, technology vendors, and telecom carriers.
• Experience with security, availability, incident response, disaster recovery, and business continuity processes.
• Strong project and resource management skills, including the ability to lead infrastructure refreshes and deployments.
• Ability to create and maintain technical documentation, network topologies, and presentations using Word, Excel, PowerPoint, and Visio.
• Familiarity with ITIL concepts, incident management, production and staging environments, and help desk ticketing systems.
• Excellent organizational, communication, and stakeholder‑management skills, including the ability to explain technical concepts to non‑technical audiences.
• Ability to work effectively with cross‑functional teams and all levels of management.
• Ability to participate in an after‑hours on‑call rotation and travel domestically when needed.