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7 results for Network Security Engineer in Hoffman Estates, 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

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.
2026-06-17T00:00:00Z

Security Manager

Chicago, IL
onsite
Temporary / Contract
55.4135 - 64.163 USD / Hourly
We are looking for a Security Manager to lead security compliance and risk oversight for a long-term contract opportunity based in Chicago, Illinois. This role is ideal for a leader who can guide control assessments, strengthen governance practices, and support audit readiness across a complex enterprise environment. The successful candidate will combine hands-on knowledge of cybersecurity frameworks with the ability to manage teams, advise stakeholders, and improve security program maturity. Responsibilities: • Lead security governance and compliance activities, including oversight of IT general controls and alignment with established regulatory and organizational standards. • Direct and develop a team of security professionals, setting priorities, reviewing performance, and ensuring consistent execution across core security initiatives. • Partner with internal stakeholders and external auditors to coordinate assessments, address findings, and maintain readiness for recurring audit activity. • Evaluate enterprise and third-party risk exposures, recommend mitigation strategies, and help strengthen risk management practices across the organization. • Support the advancement of security programs by assessing control maturity, identifying gaps, and driving practical improvements in policy, process, and oversight. • Provide guidance on industry frameworks such as ISO 27001, SOC 2, and FedRAMP to help align security operations with broader compliance objectives. • Collaborate with technical teams across cybersecurity, application security, network security, and SIEM functions to ensure controls are appropriately designed and monitored. • Contribute to emerging governance initiatives, including areas related to AI risk and oversight, where applicable.
2026-06-19T00:00:00Z

Firmware Engineer

Chicago, IL
onsite
Temporary to Hire
43.5385 - 50.08 USD / Hourly
We are looking for a skilled Firmware Engineer to join our team in Chicago, Illinois, on a contract with the potential for a long-term position. In this role, you will contribute to the development, testing, and maintenance of embedded firmware for advanced control systems. This opportunity is ideal for a proactive engineer who thrives in an agile and collaborative environment, with the possibility to transition into a long-term role. Responsibilities: • Design and develop embedded firmware using C++ for control systems in industrial environments. • Test, debug, and maintain firmware to ensure optimal performance and reliability. • Collaborate with engineering teams to implement new features and enhance existing functionality. • Work independently to navigate and improve large, established codebases. • Utilize version control systems, such as Git, to manage code changes effectively. • Contribute to platform modernization and extend firmware capabilities for next-generation systems. • Troubleshoot complex issues and provide innovative solutions to improve system efficiency. • Interact with internal stakeholders, including product owners, to align development efforts with business goals. • Support both legacy and newer firmware platforms, depending on team assignment.
2026-06-19T00:00:00Z

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