Senior IT Systems Engineer - Hybrid; Atlanta, GA)

Summary

No other company in our industry is supercharging the way they work and serve their clients like One Digital. Fresh thinking has always been the core of One Digital’s vision and growth strategy. It’s how we stand out in our industry, it’s how we stay competitive and resilient in a changing world. Most importantly, our innovative approach is helping more people do their best work and live their best lives.

Innovation fuels our employee experience by making it easier to do your best work anytime, anywhere and from any device. And our tech-based products for clients are a game changer in our industry. If you thrive on change and innovation, One Digital is the career choice for you.

The Senior IT Engineer (Level
3) is an experienced technical resource providing advanced, escalated support and systems administration across the enterprise IT environment. This role serves as a Tier 3 point of escalation for complex issues spanning endpoints, servers, networking, identity, and cloud collaboration platforms—resolving issues that fall outside the scope of Level 1 and Level 2 support.

This position is based in the Atlanta, GA area and follows a hybrid schedule, working in-office 3–4 days per week. The Senior IT Engineer partners closely with the broader IT Support, Infrastructure, and Security teams to maintain a stable, secure, and well-documented technology environment, while mentoring junior engineers and helping to continuously improve support processes.

• Serve as the Level 3 (L3) escalation point for complex hardware, software, network, and application issues that L1/L2 support cannot resolve.
• Perform advanced root-cause analysis and troubleshooting across Windows endpoints, servers, and enterprise applications.
• Manage and resolve escalated tickets within established SLAs, ensuring timely communication with end users and stakeholders.
• Administer and support Active Directory, Azure AD/Entra , and Microsoft 365 for account, access, and identity issues.
• Support endpoint management platforms (Intune/SCCM) for imaging, patching, and configuration compliance.
• Troubleshoot network connectivity issues including LAN/WAN, VPN, and Wi‑Fi across office and remote locations.
• Document recurring issues and root causes, and build knowledge base articles to improve first-contact resolution at L1/L2.
• Participate in an on-call rotation for after-hours critical incident support as needed.

• Administer and maintain servers, virtual environments, and core infrastructure supporting daily business operations.
• Support enterprise applications, file/print services, and backup and disaster recovery processes.
• Assist with the planning and execution of system upgrades, patch cycles, and infrastructure projects.
• Develop and maintain Power Shell scripts to automate routine administrative and remediation tasks.
• Maintain accurate technical documentation, including network diagrams, configuration standards, and runbooks.
• Monitor system health and performance, proactively identifying and addressing potential issues.

• Mentor and provide technical guidance to Level 1 and Level 2 support engineers.
• Recommend and help implement process improvements to reduce ticket volume and improve overall support quality.
• Partner with cross-functional IT teams (Security, Infrastructure, Applications) on projects and escalations.
• Contribute to the evaluation and rollout of new tools and technologies that improve the end-user and IT support experience.

• Considerable, hands‑on experience (typically 5+ years) in IT support, systems administration, or a…