Add your latest resume to match with open positions.

6 results for Wireless Network Engineer in Northbrook, 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.
2026-05-27T00:00:00Z

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

Telecom Unified Communications Engineer

Chicago, IL
onsite
Permanent / Full Time
105000 - 115000 USD / Yearly
We are looking for a Telecom Unified Communications Engineer to support and enhance enterprise communication systems in Chicago, Illinois. This role focuses on maintaining reliable voice and collaboration services, improving platform performance, and partnering with internal teams and external providers to resolve complex telecom issues. The ideal candidate will bring hands-on experience with unified communications technologies and a proactive approach to modernization, service stability, and end-user support. Responsibilities: • Partner with carriers and service vendors to investigate outages, troubleshoot service disruptions, and drive issues through to resolution. • Execute software updates, firmware changes, and platform enhancements while following established change control standards. • Lead the planning and delivery of communication system upgrades, replacement efforts, and migration projects that strengthen long-term platform reliability. • Monitor system health, conduct validation testing, and tune performance to maintain a high-quality user experience across voice and collaboration services. • Manage and resolve user-submitted support tickets related to telecom tools, voice services, and unified communications platforms. • Develop and maintain backup and recovery procedures to protect critical communication components and support business continuity. • Evaluate new telecom products and services through technical review, testing, implementation support, and detailed documentation. • Install, configure, maintain, and monitor telecom hardware and software, including solutions that connect voice and data services with business applications. • Administer collaboration and communication platforms such as Webex, Calabrio, Cisco Unity, Cisco Emergency Responder, RedSky, and 2Ring. • Participate in an after-hours on-call rotation to provide escalated support for critical incidents and assist with additional infrastructure-related tasks as needed.
2026-06-03T00:00:00Z

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.
2026-06-05T00:00:00Z

Sr Systems Engineer

Villa Park, IL
onsite
Temporary / Contract
55.4135 - 64.163 USD / Hourly
We are looking for an experienced Sr Systems Engineer to support and enhance enterprise infrastructure in Illinois. This Long-term Contract opportunity is ideal for a technical leader who can resolve complex systems challenges, strengthen security, and improve reliability across cloud and on-premises environments. The role will focus on modernizing core platforms, advancing automation, and partnering with cross-functional teams to deliver scalable, well-governed infrastructure solutions. Responsibilities: • Serve as the primary technical resource for diagnosing and resolving advanced infrastructure, platform, and systems-related issues. • Lead the alignment and consolidation of acquired or distributed environments to promote consistency, security, and operational stability. • Create and maintain automation tools and scripts using Python and/or Bash to streamline administration and reduce manual effort. • Manage and improve Microsoft 365, Azure, and related identity services to ensure performance, availability, and effective access management. • Direct infrastructure security efforts by applying hardening standards, addressing vulnerabilities, and improving overall risk posture. • Work closely with application and technology teams to support secure integrations and dependable system connectivity. • Enhance cloud design, backup and recovery capabilities, and data protection practices to strengthen resilience and integrity. • Contribute to audit and regulatory readiness by supporting infrastructure controls tied to compliance programs. • Partner on technology initiatives to deliver scalable, secure, and efficient infrastructure outcomes across the organization.
2026-06-05T00:00:00Z