Find & Apply For Network / Systems Administrator Jobs in Charlestown, New Hampshire

Position range in Sullivan County $65k - $86k Per Year Network Administrator

Whelen Engineering

Occupation:

Network and Computer Systems Administrators

Location:

Charlestown, NH - 03603

Job Type:

Full Time (30 Hours or More)

Posted:

08/27/2026

Positions available: 1

Source:

Whelen Engineering, Inc.

Web Site:

www.whelen.com

Job #: jo_2015054738

Job Requirements and Properties Work Onsite

Full Time Schedule

Full Time

Job Description

. As a Network Administrator at Whelen Engineering, you are responsible for maintaining, securing, and optimizing the organization's network infrastructure. This includes configuring and managing VLANs, switches, firewalls, and WAN/LAN routing, as well as supporting wireless infrastructure and virtualization systems. Working with moderate guidance, you will apply technical expertise to operational plans, resolve complex technical issues, and deliver high-quality technical support to end users. You will also collaborate with third-party vendors and cross-functional IT teams to maintain accurate documentation, strengthen system security, and implement improvements that enhance overall network performance.

employment_type:

full_time employment_type_text: Full Time key_responsibilities: Fully support, configure, maintain, and upgrade corporate network infrastructure and in-house servers. Manage VLAN and switch configurations to support secure, efficient network operations. Identify, troubleshoot, and document network connectivity and performance issues. Administer network security systems, including firewalls, anti-virus, and intrusion detection tools. Maintain and enhance wireless network infrastructure. Monitor network health and proactively address potential issues. Collaborate with third-party vendors to ensure accurate documentation and service delivery. Oversee software licensing compliance and maintenance agreements. Research and recommend network system improvements and best practices. Support networking for virtualization environments, SAN systems, and hyper-converged platforms. Manage support requests via IT ticketing systems.

Knowledge, Skills & Abilities:

Proficient in diagnosing and resolving network connectivity and performance issues. Strong technical documentation and diagramming skills. Effective communication skills for working with vendors, end users, and cross-functional teams. Flexibility to provide off-hours support when needed for business continuity. Ability to work independently with moderate guidance. Exceptional organizational and time-management skills to handle multiple tasks and priorities. Apply analytical thinking to troubleshoot and resolve complex issues. Team player - ability to work collaboratively with cross-functional teams and departments. Additional Information

Help for Additional Information. Bachelor's degree in computer science, Computer Engineering, or related discipline, or equivalent experience. 5+ years of experience in network administration, including routing, switching, and VLAN management. Hands-on experience with WAN/LAN infrastructure, wireless networking, firewall configuration, network security tools, and intrusion detection systems. Experience with virtualization technologies, SAN systems, and hyper-converged platforms. Familiarity with ITIL processes, IT support ticketing systems (Jira preferred), and software licensing compliance. Industry certifications such as CompTIA A+, Network+, Security+, or equivalent (preferred). Prior experience working in a manufacturing environment is a plus.

Working Conditions:

This role requires regular presence in both office and manufacturing floor environments. Must be able to navigate manufacturing areas and occasionally work extended hours to support project deadlines or provide off-hour support of critical business systems.