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7 results for Network Security Engineer in Orland Park, IL

Network Engineer

Schaumburg, IL
onsite
Temporary / Contract
71.25 - 82.5 USD / Hourly
We are looking for an experienced Network Engineer to support enterprise networking and security initiatives in Schaumburg, Illinois. This Long-term Contract position focuses on designing, administering, and optimizing secure network environments across firewall, wireless, and cloud-managed platforms. The role requires a hands-on, detail-oriented individual who can strengthen connectivity, improve visibility, and help deliver infrastructure changes with minimal disruption. Responsibilities: • Administer and enhance network security platforms using Fortinet solutions, including firewall, endpoint access, and analytics tools. • Manage Aruba-based switching, wireless, and centralized management environments to maintain reliable campus and branch connectivity. • Plan and execute secure connectivity updates, including IPsec-related changes, pilot deployments, and production implementations. • Integrate network and security systems with identity services such as Active Directory and Entra ID to support controlled access. • Oversee certificate usage and lifecycle processes to help maintain trusted authentication across network services. • Monitor logs, generate operational reporting, and troubleshoot issues spanning firewalls, routing, wireless, and security infrastructure. • Create and maintain technical documentation, including standard procedures, operational runbooks, and knowledge transfer materials. • Collaborate with technical teams to support cloud-managed networking and security platforms while improving performance and resilience.
2026-06-15T00:00:00Z

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>
2026-06-04T00:00:00Z

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.
2026-06-23T00:00:00Z

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

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.
2026-07-01T00:00:00Z

Sr. Linux Engineer

Chicago, IL
remote
Permanent / Full Time
120000 - 150000 USD / Yearly
We are seeking an experienced Senior Linux Engineer to support and enhance complex Linux-based infrastructure environments. This role will focus on system administration, automation, performance tuning, security, and production support across enterprise platforms. The ideal candidate brings deep technical expertise, strong troubleshooting skills, and experience working in fast-paced, high-availability environments. Key Responsibilities<ul><li>Design, implement, administer, and support enterprise Linux server environments</li><li>Manage system performance, availability, reliability, and security</li><li>Troubleshoot and resolve complex operating system, server, and infrastructure issues</li><li>Automate administration tasks using scripting and configuration management tools</li><li>Support patching, upgrades, and system hardening initiatives</li><li>Monitor infrastructure and respond to incidents, outages, and service requests</li><li>Partner with cross-functional teams including cloud, network, security, and application teams</li><li>Maintain system documentation, standards, and operational procedures</li><li>Support disaster recovery, backup, and business continuity processes</li><li>Recommend and implement infrastructure improvements and best practices</li></ul>
2026-06-09T00:00:00Z

Infrastructure Administrator

Bolingbrook, IL
onsite
Temporary / Contract
55.4135 - 64.163 USD / Hourly
We are looking for an Infrastructure Administrator to join a collaborative on-site team in Illinois. This Long-term Contract position is ideal for a hands-on, detail-oriented individual who can support core systems, strengthen endpoint operations, and resolve escalated technical issues across the environment. The role offers the opportunity to take ownership of infrastructure stability, backup readiness, virtualization support, and day-to-day operational improvements. Responsibilities: • Oversee endpoint administration activities, including application packaging, software distribution, operating system imaging, and patch deployment across managed devices. • Investigate and resolve client management issues by monitoring device health, troubleshooting deployment failures, and improving reporting accuracy. • Maintain and support core infrastructure platforms, including Nutanix systems, Windows Server environments, Active Directory, and Group Policy. • Perform routine maintenance tasks such as upgrades, patch cycles, performance checks, and general system administration to keep infrastructure reliable. • Administer backup and recovery operations using Veeam, including job monitoring, restore execution, and validation of backup integrity. • Contribute to disaster recovery preparedness by updating documentation, assisting with recovery planning, and helping verify operational readiness. • Troubleshoot network and connectivity issues involving firewalls, VLANs, remote access, and related infrastructure components in a Palo Alto environment. • Provide Tier 2 and Tier 3 technical support for hardware, software, and connectivity incidents while managing a steady flow of service requests and escalations. • Identify opportunities to streamline administrative processes through automation and practical improvements to endpoint and infrastructure management workflows.
2026-06-18T00:00:00Z