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6 results for Network Security Administrator in Chicago, IL

Network Engineer

Chicago, IL
onsite
Permanent / Full Time
110000 - 135000 USD / Yearly
We are looking for an experienced Network Engineer to support and enhance enterprise networking operations in Chicago, Illinois. This role focuses on building reliable, secure connectivity across on-premises and cloud-based environments while improving visibility, automation, and operational performance. The ideal candidate will be comfortable working in a fast-paced support setting and will bring strong technical depth across routing, firewalls, wireless infrastructure, and network monitoring. MUST HAVE SOLAR WINDS EXPERIENCE. Responsibilities:• Design and deploy scalable network solutions across campus, wireless, SD-WAN, and cloud environments to meet business and operational needs.• Maintain and troubleshoot complex multi-vendor infrastructure, resolving incidents and service requests within a high-volume, ticket-driven support model.• Strengthen network security by addressing vulnerabilities, coordinating remediation activities, and applying secure configuration standards across network platforms.• Administer and optimize routing, switching, and perimeter security technologies, including Cisco routers, Cisco ASA, and Palo Alto firewalls.• Configure and support dynamic routing protocols such as BGP to ensure resilient and efficient connectivity between internal and external networks.• Develop scripts and automation tools that streamline repetitive operational tasks, improve consistency, and reduce manual intervention.• Implement monitoring and observability capabilities that provide actionable insight into network health, performance, and service availability.• Partner with cross-functional teams to support infrastructure improvements, document technical designs, and advance network operational maturity.
2026-07-06T00:00:00Z

Network Engineer – Enterprise Wireless

Chicago, IL
onsite
Temporary / Contract
45 - 50 USD / Hourly
We are looking for an experienced Network Engineer – Enterprise Wireless to support and enhance large-scale wireless environments across facilities in Chicago, Illinois. This Long-term Contract position centers on building secure, dependable, and high-performing connectivity for office, warehouse, distribution, and production settings. The role requires deep hands-on expertise with Cisco wireless platforms, strong problem-solving skills, and the ability to partner effectively with internal teams and external vendors. Responsibilities: • Own the stability, performance, and day-to-day service quality of enterprise wireless networks across multiple business locations. • Architect, implement, and refine wireless solutions using Cisco Catalyst wireless controllers and access points, Meraki platforms, and Cisco management and assurance tools. • Perform wireless assessments and interpret survey data with tools such as Ekahau or AirMagnet to guide coverage design, channel strategy, capacity planning, and deployment validation. • Investigate RF-related issues, including interference, weak signal conditions, roaming disruptions, and client performance problems, then apply corrective improvements. • Create and maintain wireless design artifacts such as heatmaps, predictive models, technical standards, and configuration documentation for both new and existing sites. • Lead wireless rollout and refresh efforts, including equipment lifecycle upgrades, firmware consistency, and infrastructure standardization. • Track network health through monitoring and assurance platforms, identify trends, and tune the environment to improve reliability and user experience. • Resolve advanced connectivity incidents involving authentication, latency, packet loss, and mobility behavior while acting as a senior escalation point for complex wireless issues. • Establish and uphold wireless security and design standards, including WPA2/WPA3, 802.1X, segmentation, and quality-of-service policies for critical applications. • Contribute to automation and operational efficiency initiatives by using APIs, Python, and Ansible to streamline wireless administration and support processes.
2026-07-21T00:00:00Z

IT Security Specialist

Deerfield, IL
onsite
Temporary / Contract
47.5 - 55 USD / Hourly
We are looking for an IT Security Specialist to join a manufacturing organization in Deerfield, Illinois on a Long-term Contract assignment. This role will help strengthen day-to-day cyber defense operations by supporting threat monitoring, incident handling, user security education, and risk reduction across endpoints and identities. The position works closely with internal technology teams and external security partners to improve visibility, response effectiveness, and overall protection of the environment. Responsibilities: • Coordinate with a managed detection and response partner to support continuous security monitoring and timely investigation of suspicious activity. • Review, assess, and escalate security events within SIEM and related security platforms, helping drive efficient triage and follow-up actions. • Participate in cyber incident response efforts by assisting with investigation, containment steps, corrective actions, and post-event tracking. • Refine detection logic, alert thresholds, and response workflows to improve the quality and effectiveness of security operations. • Contribute to organization-wide security awareness efforts by supporting phishing exercises, educational content, and user-focused communications. • Analyze vulnerability scan findings, help rank remediation priorities based on business risk, and monitor closure progress with technical teams. • Support identity and access security activities in Microsoft Entra ID, including access reviews, role-based permissions, and governance practices. • Assist with endpoint protection operations by monitoring tools such as Microsoft Defender, CrowdStrike, or SentinelOne and helping resolve endpoint-related threats. • Use endpoint management technologies such as Microsoft Intune and Group Policy to apply security baselines, review configurations, and strengthen device hardening standards.
2026-07-29T00:00:00Z

Systems Administrator

Pleasant Prairie, WI
onsite
Temporary to Hire
43.7 - 50.6 USD / Hourly
We are looking for a Systems Administrator to support and strengthen a distributed infrastructure environment in Wisconsin. This contract position with permanent potential focuses on keeping network, server, and telephony systems stable, secure, and responsive while delivering high-level technical support to internal users. The role will contribute to day-to-day operations across multiple sites and help improve reliability, protection, and overall system performance. Responsibilities: • Oversee the health and performance of network and telecommunications systems across multiple locations, addressing issues before they disrupt operations. • Investigate and resolve advanced connectivity and infrastructure problems, working with external service providers and hardware vendors when repairs or replacements are needed. • Administer Meraki MX appliances, including secure site-to-site connectivity, to maintain dependable communication between locations. • Provide Tier 3 technical support for complex IT, systems, and telephony incidents while meeting established service expectations. • Install, configure, patch, and upgrade server, network, and end-user hardware and software as part of ongoing infrastructure support. • Manage user access and permissions across core systems to help protect company resources and enforce authorized usage. • Monitor backup processes and recovery readiness to support data protection and business continuity objectives. • Maintain accurate support records, technical documentation, and ticket updates within the help desk platform. • Identify opportunities to improve infrastructure security, resilience, and operational efficiency, and recommend practical enhancements. • Support administration of internal platforms and services, including licensing oversight and changes related to core infrastructure environments.
2026-07-28T00:00:00Z

Data Security Analyst

Chicago, IL
onsite
Temporary / Contract
79.1635 - 91.663 USD / Hourly
We are looking for a Data Security Analyst to support and strengthen email and messaging security operations for a Contract position based in Chicago, Illinois. This role focuses on protecting the organization from phishing, malware, impersonation, and other email-borne threats while improving the reliability and security of mail delivery. The ideal candidate brings deep experience with Proofpoint, hybrid messaging environments, and user-focused security practices, along with the ability to communicate clearly across technical and non-technical teams. Responsibilities: • Investigate and resolve complex email security and delivery issues, including routing failures, encryption challenges, quarantine events, and user-reported security concerns. • Review dashboards, system logs, and alert activity to identify and respond to phishing attempts, malware incidents, spoofing, and impersonation threats. • Administer and optimize Proofpoint Essentials and related integrations to maintain strong protection across the messaging environment. • Configure and maintain email security controls, including encryption settings, policy rules, and quarantine management processes. • Lead initiatives involving Proofpoint enhancements, platform updates, and rollout of new security capabilities. • Develop clear guidance and training materials for IT teams and end users on secure email practices and available protection tools. • Support security awareness efforts by helping manage phishing simulation activities and user education programs. • Collaborate with broader security operations by connecting email security insights with SIEM platforms and other enterprise security tools where applicable.
2026-07-27T00:00:00Z

Systems Engineer

Glenview, IL
onsite
Temporary / Contract
55 - 65 USD / Hourly
We are looking for an experienced Systems Engineer to support and enhance a complex enterprise infrastructure environment in Illinois. This long-term contract position is ideal for a hands-on specialist who can manage core Microsoft, virtualization, and cloud technologies while maintaining stability, security, and operational efficiency. The role will focus on Windows systems engineering, hybrid identity administration, platform upgrades, and infrastructure automation across on-premises and Azure environments. Responsibilities: • Administer and improve enterprise Windows Server infrastructure, ensuring reliable performance, security, and alignment with operational standards. • Lead VMware vSphere lifecycle activities, including environment assessments, version upgrades, and workload movement to alternate hypervisor platforms when required. • Manage Active Directory in complex multi-forest environments, including organizational unit structure, delegated administration, trust design, Kerberos policy configuration, and directory cleanup efforts. • Support Azure infrastructure services by handling IaaS resources, hybrid connectivity, identity integration, backup operations, and subscription-level administration. • Oversee enterprise messaging and endpoint management platforms such as Exchange and SCCM, maintaining service availability and supporting ongoing enhancements. • Provision and maintain NetApp storage resources, administer datastores, and coordinate storage integration with virtualized environments. • Develop and maintain production-quality PowerShell scripts to automate routine administration, streamline operational tasks, and improve consistency. • Execute infrastructure changes within established ITSM and change control frameworks, documenting implementation steps, risks, and validation outcomes. • Contribute to technical documentation and runbook development, including the effective use of AI-based tools to accelerate knowledge capture and operational readiness.
2026-06-30T00:00:00Z