IT Systems Engineer (Microsoft 365 & Power Platform)

NAC International, a global provider in nuclear fuel cycle management solutions and consulting services, is seeking a detail-oriented Information Technology (IT) Systems Engineer with strong problem-solving skills to join our growing team at our Peachtree Corners, GA headquarters. This is a hybrid remote position which offers flexibility to work both on-site and remotely. WHO WE ARE: NAC International is a global leader in nuclear fuel cycle management and consulting services. For more than 50 years, we have been at the forefront of nuclear innovation, delivering safe, sustainable, and forward-thinking solutions in fuel cycle technology and waste management. Our reputation is built on engineering excellence, strategic collaboration, and a strong commitment to solving complex challenges for clients around the world. ABOUT THE ROLE: As the IT Systems Engineer, you will provide advanced technical support, operational execution, and project delivery across Microsoft 365, Entra ID, endpoint management, and enterprise productivity platforms for the corporate organization and its subsidiary companies. You will also support administration and standardization efforts under the direction of the IT Infrastructure Development Manager, serving as a primary escalation resource for complex technical issues, and providing day-to-day operational support for the organization's Power Apps–based Document Approvals system. WHAT YOU’LL OWN: You’ll support enterprise IT operations across the parent organization and subsidiary companies, executing assigned administrative, remediation, and modernization tasks while adhering to established architecture, security standards, and governance processes. The position operates with a high degree of autonomy in execution while remaining aligned with enterprise direction and oversight. WHAT YOU’LL DO: Microsoft 365 & Entra ID Administration Support Assist with administration of Microsoft 365 and Entra ID environments under the direction of the IT Infrastructure Development Manager, including user lifecycle tasks, group management, service configuration support, and operational maintenance. Execute assigned Microsoft 365 cleanup and standardization initiatives, including configuration alignment, documentation updates, testing, and implementation support. Support identity and access operations, including MFA and SSO support activities and troubleshooting, in alignment with established enterprise security architecture and standards. Endpoint Management & Device Operations Assist with administration of Microsoft Intune for device enrollment, compliance policies, configuration profiles, and application deployment. Remediate device enrollment issues and support rollout of new endpoint configurations and standards. Execute workstation cleanup, remediation, and modernization efforts, including testing software changes and supporting upgrade and refresh initiatives. Maintain endpoint deployment documentation and operational procedures to improve consistency and reduce escalations. Execute and maintain existing PowerShell-based deployment and remediation scripts; escalate complex script development requirements to the IT Infrastructure Development Manager. Advanced Escalation Support & Service Reliability Serve as the primary escalation resource for complex Microsoft 365, Entra ID, Intune, endpoint, and related security issues that exceed Help Desk troubleshooting capabilities. Partner with the Help Desk function to improve troubleshooting quality, establish escalation criteria, and develop repeatable processes that reduce unnecessary escalations. Monitor service health, investigate incidents, and coordinate resolution activities with internal teams and external vendors as required. Power Platform Operations – Document Approvals System Provide day-to-day administration, operational support, and advanced troubleshooting for the organization's Microsoft Power Platform (Power Apps) –based Document Approvals system supporting enterprise-wide business workflows. Implement approved fixes, enhancements, and configuration changes in alignment with established architecture, governance standards, and change approval processes defined by the IT Infrastructure Development Manager. Collaborate on solution improvements and support the transition of ongoing development and operational support fully in-house, including documentation and knowledge transfer activities. Coordinate with third-party development partners as needed to support stability, enhancements, and issue resolution. Projects, Documentation, and Continuous Improvement Execute assigned infrastructure, platform, and application modernization initiatives. Develop and maintain technical documentation and configuration standards to support scalable operations and consistent service delivery. Maintain current knowledge of Microsoft cloud services, endpoint management, and enterprise IT best practices. WHAT YOU’LL BRING: Required Qualifications Bachelor's degree in Computer Science, Information Technology, or related field with five (5) or more years of experience in systems administration, Microsoft 365 administration, or endpoint management; or an equivalent combination of education and experience. Hands-on experience supporting Microsoft 365 and Entra ID environments. Practical experience administering Microsoft Intune, including enrollment, configuration, compliance, and application deployment. Experience with Power Platform administration or support. Working proficiency with PowerShell for troubleshooting, running existing scripts, and basic administrative automation. Demonstrated ability to execute independently on assigned responsibilities while working within established architecture and governance frameworks. Strong troubleshooting skills across identity, endpoint, and productivity platforms. Solid networking fundamentals, including DNS, DHCP, and VPN basics. Preferred Qualifications Experience supporting multi-tenant or multi-company IT environments. Familiarity with Microsoft security tooling and concepts, including conditional access, email security, and endpoint protection. Familiarity with evaluating or supporting emerging AI capabilities in enterprise environments, including Microsoft-specific tools as well as solutions from other providers. Experience assisting with the implementation of policies, controls, or guardrails for organizational use of AI tools, including security, corporate data protection, identity, and compliance. WHY NAC? At NAC, we offer more than just a job – we offer a mission-driven career. Our team enjoys competitive compensation aligned with industry benchmarks, Company paid health insurance, long and short disability and life insurance, supplemental health insurance options, generous paid time off benefits, 11 paid holidays, 401k with employer matching contributions, tuition reimbursement, paid parental leave and hybrid remote work flexibility. Join us in shaping the future of nuclear energy. Apply today and become a part of a team that’s redefining what’s possible. NAC is an Equal Opportunity Employer and is committed to building a diverse and inclusive workforce. In accordance with applicable laws, NAC does not discriminate in hiring or otherwise in employment on the basis of race, color, religion, sex, national origin, age, marital or veteran status, disability, sexual orientation, gender identity or any other legally protected status.

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