Network Security Administrator

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. Implement and manage network security measures, problem resolution, change requests, system diagnostics, network monitoring, and security projects .

Posted 9/19/2026full-timeWood River • Illinois • United StatesMid-LevelSenior💰 $60,000 - $66,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in network security management, including the design and implementation of security infrastructure, vulnerability assessments, and incident response. Proficient in managing LAN/WAN environments and ensuring data integrity and confidentiality through effective security measures.

Highest-signal resume keywords

LAN/WAN Network AdministrationNetwork Security Infrastructure DesignIntrusion Detection and Prevention SystemsCompTIA Security+CrowdStrike Knowledge

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Network Security MeasuresFirewall AdministrationIntrusion Detection SystemsData Encryption SolutionsVulnerability ScansPatch ManagementOS UpgradesSIEMEndpoint ProtectionNetwork Traffic Monitoring

Soft Skills

Strong Organizational AbilitiesAnalytical AbilityProblem-Solving SkillsVerbal Communication SkillsWritten Communication Skills

Tools & Technologies

FirewallsAnti-Virus SoftwareNetwork Monitoring ToolsData Center Management ToolsNetwork Diagramming Software

Certifications & Qualifications

CompTIA Security+

Industry Keywords

Digital Security InvestigationsIdentity and Access ManagementLeast-Privilege PracticesNetwork DevicesCredit Union Security

Tech Stack

Tools & technologies

FirewallsSwitching

About the role

Key responsibilities & impact

Implement and manage network security measures, problem resolution, change requests, system diagnostics, network monitoring, and security projects
Ensure the integrity, confidentiality, and availability of data and systems
Design, implement, and oversee network security infrastructure
Install, administer, and troubleshoot firewalls, intrusion detection systems, anti-virus software, and data encryption solutions
Conduct, monitor, and manage security assessments and vulnerability scans
Create and maintain network diagrams and documentation for network services
Maintain and organize the local data center
Track equipment and software licenses and maintain equipment documentation and inventory
Monitor network traffic and user logs for suspicious activity and respond to security incidents
Monitor resource rights, apply least-privilege practices, and review and configure firewall rules
Set up network devices such as switches
Support users with Windows OS and other system applications
Participate in rotating 24/7 on-call coverage

Requirements

What you’ll need

Minimum of 3 years experience with LAN/WAN Network Administration and system management
Bachelor's degree in Computer Science, Information Systems, Management Information Systems, or related field preferred, or combination of coursework and related work experience
CompTIA Security+ preferred
Understanding of LAN routing, switching, and firewalls
Knowledge and experience with patch management, OS upgrades, security, vulnerability scanners, system monitoring, SIEM, and endpoint protection
Strong organizational abilities and ability to manage multiple priorities
Strong analytical ability and problem-solving skills
Strong verbal and written communication skills with IT professionals, vendors, and users
Experience in digital security investigations
Experience with Intrusion Detection and Prevention Systems
Experience with Identity and Access Management
CrowdStrike knowledge
Ability to work and travel to different credit union locations as determined by management

Benefits

Comp & perks

Competitive salary and benefits
Opportunities for career growth
Supportive team environment