It infrastructure services 4
First seen by Alion on Oct 21, 2026.
We are seeking a Senior Network Analyst to support, secure, maintain, and enhance the organization’s enterprise network infrastructure. This role provides advanced technical expertise in network security, infrastructure operations, incident response, and the implementation of secure, reliable, and resilient network services. The Senior Network Analyst is responsible for administering and optimizing network security technologies, investigating and resolving complex technical issues, implementing infrastructure changes, and collaborating with cross-functional IT teams to ensure network services meet organizational security, availability, and performance requirements. The successful candidate will demonstrate advanced knowledge of enterprise networking and network security, strong analytical and troubleshooting skills, and the ability to lead technical initiatives, mentor colleagues, and contribute to the development of organizational technology standards.
Monitor network traffic, security alerts, and logs to identify and investigate potential threats. Administer and maintain firewalls, VPNs, IDS/IPS, NDR, and network access control solutions. Investigate security incidents, perform root-cause analysis, and coordinate remediation. Manage firewall policies, security rules, and configuration changes in accordance with organizational standards. Plan and implement firewall upgrades, patches, migrations, and configuration changes. Administer and maintain internal and external DNS services and DNS security solutions. Support vulnerability assessments, security audits, and remediation activities. Troubleshoot complex network connectivity, routing, switching, VPN, DNS, and security issues. Maintain network diagrams, technical documentation, procedures, and incident records. Collaborate with network, server, database, cloud, application, and cybersecurity teams to implement secure solutions. Participate in technology projects, infrastructure upgrades, and business continuity and disaster recovery activities. Provide technical guidance and mentorship to colleagues and serve as an escalation point for complex issues. Identify operational improvements and contribute to HSS technology standards. Participate in a rotational on-call schedule.
Post-secondary diploma or degree in Information Technology, Computer Science, or a related discipline. Minimum of seven years of relevant experience within the past ten years in a large, complex enterprise IT environment. Expert-level knowledge of enterprise firewalls and network security. Strong understanding of TCP/IP, routing, switching, SD-WAN, VPNs, NAT, DNS, and network security principles. Demonstrated troubleshooting, analytical, and problem-solving skills. Effective communication, organizational, and collaboration skills. Ability to manage competing priorities and work effectively in a high-pressure environment.
As required.
Fortinet firewall and security technologies, including FortiGate, FortiManager, and FortiAnalyzer. Citrix NetScaler load balancing. Infoblox DDI and DNS security. Forescout Network Access Control (NAC). Cisco networking technologies. Network segmentation, threat detection, and incident response. Relevant industry certifications, such as Fortinet, Cisco, CISSP, GIAC, CEH, CCSP, Check Point, or ITIL.