IT System Engineer - Tier III

Location:

Marietta, GA (near the Battery / Truist Park)

Full Time

Onsite

We're partnering with a growing organization to identify a Systems Engineer who enjoys solving complex technical challenges, mentoring others, and improving the overall technology experience across the business.

This role serves as a senior technical resource supporting core enterprise technologies, including Microsoft 365, identity and access management, endpoint management, networking, and infrastructure platforms. You'll partner closely with IT, Security, and Infrastructure teams to resolve complex issues, drive operational improvements, and contribute to a stable, secure, and scalable technology environment.

This position is based in the Atlanta area and follows a hybrid schedule, with approximately 3-4 days per week in the office.

• Serve as the senior escalation point for complex technical issues spanning endpoints, identity, infrastructure, networking, and enterprise applications.
• Perform root cause analysis and resolve issues that require advanced troubleshooting across Microsoft and enterprise technology platforms.
• Manage high-priority incidents and escalations while ensuring clear communication with stakeholders and end users.
• Administer and support Microsoft 365, Active Directory, and Entra , including identity, access, and authentication services.
• Support endpoint management platforms, including device provisioning, patch management, compliance enforcement, and configuration management.
• Troubleshoot connectivity issues involving LAN/WAN environments, VPNs, wireless networks, and remote users.
• Create and maintain technical documentation, knowledge articles, and operational runbooks to improve support effectiveness and reduce recurring issues.
• Participate in on-call support rotations for critical business-impacting incidents.

• Administer and maintain enterprise systems, servers, virtual environments, and supporting infrastructure.
• Support backup, recovery, business continuity, and disaster recovery processes.
• Assist with infrastructure upgrades, patching initiatives, technology refreshes, and system implementations.
• Monitor system performance and proactively identify opportunities to improve reliability, security, and operational efficiency.
• Develop automation solutions using Power Shell and other tools to streamline routine administrative tasks and reduce manual effort.
• Provide mentorship and technical guidance to Service Desk and Systems Administration team members.
• Partner with Security, Infrastructure, and Application teams on project delivery and issue resolution.
• Identify opportunities for automation, standardization, and process improvement that enhance the end-user experience.
• Contribute to evaluating and implementing new technologies, tools, and best practices.
• Help elevate overall support maturity by improving documentation, knowledge sharing, and operational processes.

• 5+ years of progressive experience in IT engineering, systems administration, infrastructure support, or a related technical role.
• Strong experience supporting Microsoft-based enterprise environments.
• Hands-on experience with:
• Microsoft 365 Administration
• Active Directory and Entra
• Microsoft Intune and/or SCCM
• Windows desktop and server administration
• Enterprise networking fundamentals (TCP/IP, DNS, DHCP, VPN)
• Power Shell scripting and automation
• Strong analytical and troubleshooting skills with the ability to manage multiple priorities in a fast-paced environment.
• Excellent communication skills and the ability to translate technical concepts for non-technical audiences.
• Experience documenting systems, processes, and technical…