Senior Network & Cybersecurity Administrator

Axcelis Technologies • Beverly, MA

116d • $90,742 - $136,113

About The Position

Axcelis Technologies is seeking a highly skilled Senior Network & Cybersecurity Administrator to join our dynamic IT team. This critical role blends advanced network administration with cybersecurity expertise to monitor, design, implement, and protect our enterprise infrastructure. This position will be instrumental in ensuring the performance, availability, and security of our network environment—spanning architecture, operations, and incident response. We’re looking for a hands-on technical leader who thrives at the intersection of traditional networking and modern cybersecurity practices. If you’re passionate about defending complex systems and driving innovation, this is your opportunity to make a lasting impact.

Requirements

• 7+ years of progressive experience in network administration with a strong focus on cybersecurity.
• Expertise in enterprise network design, implementing, and management.
• Strong knowledge of TCP/IP, BGP, 802.1X, DNS, DHCP, routing, switching, and other network protocols.
• Hands-on experience with firewalls, IDS/IPS, VPN, NAC.
• Familiarity with cybersecurity frameworks (NIST CSF, CMMC), and threat vectors.
• Experience with SIEM, EDR, and incident response processes.
• Proficiency in diagnostic and troubleshooting tools.
• Excellent analytical, problem-solving, documentation, and communication skills.
• Ability to work independently and as collaboratively in a fast-paced environment.

Nice To Haves

• Bachelor’s degree in computer science, information technology, cybersecurity, or related field.
• Relevant industry certifications (Aruba/HPE, CCNA/CCNP, CISSP, CompTIA).
• Experience with cloud networking and security in Azure.
• Experience with Fortinet firewalls, IDS/IPS, Aruba Airwave, ClearPass, and endpoint security platforms.

Responsibilities

• Monitor and optimize network performance to ensure high availability and reliability.
• Design, implement, and maintain secure, scalable network infrastructure (LAN/WAN, Wireless, VPN, Data Center).
• Configuration and troubleshooting of network devices including routers, switches, firewalls, wireless access points, and OT network devices.
• Develop and maintain network diagrams, documentation, standard operating procedures (SOPs) and policies.
• Oversee network hardware/software upgrades and lifecycle management.
• Identify and mitigate network security risks and vulnerabilities.
• Administer firewalls (Fortinet preferred), NAC, SIEM, and VPN solutions.
• Monitor network traffic and logs for anomalies and threats.
• Lead incident response efforts: investigation, containment, recovery, and forensics.
• Conduct vulnerability assessments and penetration testing.
• Develop and enforce network security policies, standards, and best practices in alignment with industry frameworks (NIST, CMMC, ISO 27001).
• Stay current on emerging threats and recommend proactive defenses.
• Participate in audits and provide evidence for network-related controls.
• Collaborate closely with other IT teams (Systems, Applications, DevOps) to ensure secure integration of new technologies and services.
• Mentor junior administrators and serve as a subject matter expert.
• Lead strategic planning and technical discussions for network and cybersecurity initiatives.
• Participate in an on-call rotation.

Benefits

• Eligibility in the Axcelis Team Incentive bonus plan.
• Comprehensive benefits package for regular employees working 20+ hours a week.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: Bachelor's degree
• Number of Employees: 501-1,000 employees