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3 results for Wireless Network Engineer in Hoffman Estates, IL

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

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.
2026-05-15T00:00:00Z

IT Security Engineer – Zscaler Specialist

Chicago, IL
onsite
Temporary / Contract
63.65 - 73.7 USD / Hourly
We are looking for an experienced IT Security Engineer – Zscaler Specialist to support and strengthen enterprise cloud security operations in Chicago, IL. This Long-term Contract position focuses on administering and enhancing Zscaler-based security services while helping maintain a reliable, scalable, and well-governed security environment. The role will partner with cross-functional teams to evaluate requirements, resolve technical issues, and improve secure access, web protection, and data safeguarding capabilities. Responsibilities:• Administer and optimize Zscaler security platforms to support secure, high-performing access across cloud and enterprise environments.• Investigate configuration issues, analyze service behavior, and implement corrective actions to maintain stable security operations.• Collaborate with infrastructure, network, and application teams to align security controls with business needs and technical requirements.• Support secure web access, zero trust connectivity, firewall policy coordination, and data protection initiatives across the environment.• Conduct reviews of existing processes and technical documentation to identify gaps, recommend improvements, and strengthen operational consistency.• Translate business and security needs into clear technical requirements, user stories, and actionable implementation plans in Agile delivery settings.• Participate in troubleshooting efforts, root cause analysis, and service improvement activities to reduce risk and enhance platform performance.• Assist with documentation updates, control validation, and ongoing analysis related to security changes, policies, and operational procedures.
2026-06-11T00:00:00Z