<p>Our client is seeking an experienced <strong>Infrastructure Security Engineer</strong> 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.</p><p><br></p><p><strong>Key Responsibilities</strong></p><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>
<p>We are seeking a skilled <strong>Systems Administrator</strong> to support, maintain, and enhance enterprise infrastructure environments. This role is responsible for day-to-day administration of servers, systems, and related technologies, as well as troubleshooting issues, supporting end users, and ensuring reliable system performance. The ideal candidate has strong technical experience, a proactive mindset, and the ability to work across multiple infrastructure platforms.</p><p><br></p><p>Key Responsibilities</p><ul><li>Administer, maintain, and support physical and virtual server environments</li><li>Monitor system performance, availability, and security</li><li>Install, configure, patch, and upgrade operating systems and server applications</li><li>Troubleshoot hardware, software, and infrastructure issues in a timely manner</li><li>Manage user accounts, permissions, and access controls</li><li>Support Active Directory, group policies, file services, and related enterprise systems</li><li>Assist with backup, recovery, and disaster recovery processes</li><li>Maintain system documentation, procedures, and inventory records</li><li>Collaborate with network, security, cloud, and help desk teams to resolve issues and improve operations</li><li>Participate in on-call support or after-hours maintenance as needed</li></ul>
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.<br><br>Responsibilities:<br>• Administer and enhance network security platforms using Fortinet solutions, including firewall, endpoint access, and analytics tools.<br>• Manage Aruba-based switching, wireless, and centralized management environments to maintain reliable campus and branch connectivity.<br>• Plan and execute secure connectivity updates, including IPsec-related changes, pilot deployments, and production implementations.<br>• Integrate network and security systems with identity services such as Active Directory and Entra ID to support controlled access.<br>• Oversee certificate usage and lifecycle processes to help maintain trusted authentication across network services.<br>• Monitor logs, generate operational reporting, and troubleshoot issues spanning firewalls, routing, wireless, and security infrastructure.<br>• Create and maintain technical documentation, including standard procedures, operational runbooks, and knowledge transfer materials.<br>• Collaborate with technical teams to support cloud-managed networking and security platforms while improving performance and resilience.
<p><strong>Systems Administrator (Hybrid)</strong></p><p><br></p><p><strong>Position Overview</strong></p><p>We're looking for a Systems Administrator to join a collaborative IT team responsible for supporting and modernizing a hybrid Microsoft infrastructure. This role combines day-to-day systems administration with infrastructure projects, cloud migration initiatives, and Tier 3 support. The ideal candidate enjoys solving technical challenges, improving system reliability, and helping drive a cloud-first strategy.</p><p><br></p><p><strong>Responsibilities</strong></p><ul><li>Administer Microsoft 365 services including Exchange Online, Teams, SharePoint, and OneDrive.</li><li>Manage Entra ID (Azure Active Directory), hybrid identity, and user access.</li><li>Support Windows server infrastructure in both physical and virtual environments.</li><li>Maintain VMware and/or Hyper-V virtualization platforms.</li><li>Assist with the migration of on-premises infrastructure and workloads to Microsoft Azure.</li><li>Configure and support Microsoft Teams Phone, including call routing and policies.</li><li>Manage networking infrastructure including switches, wireless access points, and firewalls.</li><li>Implement security best practices including MFA, Conditional Access, and identity management.</li><li>Monitor infrastructure health, system performance, backups, and disaster recovery.</li><li>Troubleshoot complex infrastructure issues and serve as a Tier 3 escalation resource.</li><li>Develop and maintain technical documentation and standard operating procedures.</li><li>Collaborate with IT team members on infrastructure improvements and strategic initiatives.</li><li>Provide occasional support for Tier 1 and Tier 2 issues while mentoring junior IT staff.</li></ul>