4 Results for Network Security Administrator Jobs in Naperville, IL

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Network/Systems Administrator

Chicago, IL
onsite
Temporary / Contract
42 - 55 USD / Hourly
We are looking for a Network/Systems Administrator to provide onsite support for core infrastructure operations in Chicago, Illinois. This Long-term Contract position focuses on keeping server, virtualization, storage, and network environments stable, secure, and well maintained while partnering with technical teams to resolve issues efficiently. The ideal candidate brings practical experience across VMware, Cisco networking, enterprise storage, and physical cabling, along with a dependable, hands-on approach to day-to-day infrastructure support. Responsibilities: • Manage virtual infrastructure by supporting VMware hosts, clusters, virtual machines, and associated platform components. • Track system health, investigate performance concerns, and carry out scheduled maintenance such as patching, upgrades, backups, and operational checks. • Provide administration for enterprise storage platforms, including monitoring utilization, addressing connectivity issues, and assisting with performance tuning. • Configure and troubleshoot Cisco network equipment, including switch ports, VLAN assignments, and general LAN connectivity. • Install and maintain copper and fiber cabling by tracing lines, labeling connections, organizing runs, and resolving physical network issues. • Perform hardware deployment tasks such as rack installation, equipment replacement, and upkeep of server rooms or network closets. • Diagnose infrastructure problems affecting servers, storage, network services, and user connectivity, escalating complex issues when needed. • Keep technical records current by updating diagrams, asset inventories, procedural documentation, and change history. • Follow established security standards, operational procedures, and change-control practices while coordinating with infrastructure, security, application, and support teams.
2026-10-07T00:00:00Z

Network Engineer

Deer Park, IL
onsite
Permanent / Full Time
80000 - 100000 USD / Yearly
We are looking for a Network Engineer to support and enhance a secure, high-performing enterprise network environment in Deer Park, Illinois. This role focuses on maintaining core routing and firewall infrastructure, improving connectivity across the organization, and helping ensure reliable network operations. The ideal candidate brings strong hands-on experience with Cisco networking technologies and Palo Alto security platforms, along with a solid understanding of dynamic routing protocols. Responsibilities: • Manage, configure, and optimize Cisco routing infrastructure to maintain dependable and efficient network performance. • Administer Palo Alto and Cisco ASA firewall environments, including rule updates, security policy enforcement, and ongoing performance review. • Monitor network health, identify connectivity or performance issues, and resolve incidents to reduce downtime and service disruption. • Support Border Gateway Protocol (BGP) configuration and troubleshooting to sustain stable external and internal routing paths. • Implement network changes, upgrades, and improvements while following operational standards and security requirements. • Collaborate with technical teams to evaluate network needs, recommend solutions, and support infrastructure-related projects. • Maintain accurate documentation for network architecture, device configurations, and support procedures. • Participate in troubleshooting complex networking problems across routers, firewalls, and related infrastructure components.
2026-09-23T00:00:00Z

Cyber Security Analyst

Lisle, IL
onsite
Permanent / Full Time
80000 - 90000 USD / Yearly
We are looking for a Cyber Security Analyst to strengthen and support a modern, Microsoft-focused technology environment. This role blends security operations, risk awareness, and end-user support, making it ideal for someone who can investigate threats, improve protective controls, and communicate clearly with both technical and nontechnical teams. The successful candidate will help safeguard enterprise systems, customer-facing platforms, and connected third-party services while contributing to a collaborative, service-oriented IT organization. Responsibilities:• Monitor security events across enterprise tools, investigate suspicious activity, and escalate or resolve incidents in a timely manner.• Administer and optimize cybersecurity platforms used for threat detection, vulnerability management, identity protection, endpoint defense, and secure access.• Partner with IT and business teams to coordinate remediation efforts for vulnerabilities, configuration gaps, and other identified security risks.• Support incident response activities by documenting findings, tracking actions, and helping contain and recover from security events.• Assist with audit preparation, compliance evidence gathering, and security readiness efforts related to internal and external assessments.• Provide practical guidance to employees on phishing awareness, secure behavior, and day-to-day cybersecurity best practices.• Contribute to support tickets when security expertise is needed, working across service levels to help resolve user and system issues.• Review and maintain protections related to firewalls, remote access, email security, and endpoint configurations across the environment.
2026-10-05T00:00:00Z

Infrastructure & Security Engineer

Naperville, IL
onsite
Permanent / Full Time
120000 - 148000 USD / Yearly
Our client is seeking an experienced Infrastructure Security Engineer to support and secure a hybrid Microsoft environment spanning both on-premises and cloud platforms. This role is ideal for a hands-on professional with deep experience across traditional server and network infrastructure, along with responsibility for enterprise security tooling, threat monitoring, and ongoing security operations. The organization is currently in a hybrid state and actively transforming to a more cloud-centric environment, so this individual will play a key role in both day-to-day operational security and longer-term modernization efforts. Based on general knowledge. Key Responsibilities<ul><li>Manage and secure core infrastructure, including servers, networks, firewalls, switches, VPNs, and related systems in a hybrid on-premises and cloud environment. Based on general knowledge.</li><li>Administer, maintain, and optimize security tools such as endpoint protection, vulnerability management, SIEM, email security, identity and access management, and monitoring platforms. Based on general knowledge.</li><li>Monitor infrastructure and security events, investigate alerts, respond to incidents, and support remediation efforts. Based on general knowledge.</li><li>Partner with infrastructure and leadership teams to strengthen security controls across Microsoft technologies, including Active Directory, Azure, Microsoft 365, and related platforms. Based on general knowledge.</li><li>Support the company’s transition from traditional on-premises infrastructure to cloud-based solutions by helping design and implement secure architectures and best practices. Based on general knowledge.</li><li>Perform vulnerability assessments, patch management coordination, system hardening, and access reviews across servers, endpoints, and network devices. Based on general knowledge.</li><li>Develop and maintain security documentation, standards, procedures, and incident response processes. Based on general knowledge.</li><li>Assist with compliance, audit readiness, and security improvement initiatives. Based on general knowledge.</li><li>Collaborate with internal teams and third-party vendors to ensure reliable infrastructure performance and effective security coverage. Based on general knowledge.</li></ul>
2026-09-22T00:00:00Z

4 results for Network Security Administrator in Naperville, IL