Senior Systems Administrator

About the Role: Our Infrastructure team is seeking an experienced and motivated Senior IT Infrastructure Administrator to support and maintain our hybrid enterprise environment, including Microsoft 365, Microsoft Azure, Amazon Web Services (AWS), on-premises infrastructure, enterprise security technologies, and local IT operations at our Littleton, Colorado facility. What's In It For You! Competitive Pay : $100,000 - $150,000 annually. Our employees are the best part of our company. We want you to feel valued, appreciated, and included. Because of this, we make sure your hard work is recognized. Paid Leave (US ONLY): Enjoy time away from work with Company paid holidays, flexible working schedules through our paid time off (PTO) policy. Yep, you read that correctly. We are a Company that values you and makes sure you take time for yourself. 401(k): Prepare for a secure retirement with our 401k plan, which includes an employer matching contribution. Comprehensive Health & Wellness Plans: We want to be here for our employees throughout all stages of life, which is why we offer a wide range of resources, information, and support during your career with us. Global Team: With our state-of-the-art corporate headquarters in Rock Hill, South Carolina, our global team has a presence across more than 13 countries worldwide. Experience a workplace comprised of talented individuals who are passionate about serving our customers and each other. Innovative Culture: Innovation is at the heart of what we do! Since our founding in 1986 by Chuck Hull, the inventor of 3D printing, we have continuously pushed the boundaries of what is possible with additive manufacturing. When you join 3D, you will have the opportunity to work with cutting edge technology in an innovative and collaborative culture! Talent Development: At 3D Systems, we invest in talent programs to support employees with opportunities to grow, contribute, develop, and thrive in their careers. Connection & Engagement Opportunities: We strive to cultivate an environment where our diverse global workforce can connect and thrive. Our Employee Resource Group program, Employee Recognition program, and 3D Gives Back program, are just a few examples of how you will be empowered to build connections, celebrate wins, and make a meaningful impact. What We Are Looking For: Administer and support Microsoft 365 services, including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Microsoft Entra ID (Azure AD), and Microsoft Intune, ensuring secure, reliable, and efficient operations. Manage and maintain Windows Server infrastructure, Active Directory, DNS, DHCP, Group Policy, and other core enterprise services to ensure optimal system performance and availability. Administer and support cloud infrastructure within Microsoft Azure and/or Amazon Web Services (AWS), including provisioning, monitoring, security, and ongoing optimization. Manage Nutanix AHV virtualization environments and support infrastructure lifecycle activities, including upgrades, patching, capacity planning, and system maintenance. Support enterprise backup, disaster recovery, business continuity, infrastructure monitoring, and modernization initiatives to improve system resilience and operational efficiency. Assist in the administration of enterprise security technologies, vulnerability management, patch remediation, identity management, and compliance initiatives to maintain a secure IT environment. Develop and maintain PowerShell automation, standard operating procedures (SOPs), technical documentation, and infrastructure standards to improve operational efficiency and consistency. Serve as the primary IT Infrastructure Administrator for the Littleton facility, providing advanced infrastructure support while partnering closely with local and global IT teams. Collaborate with the onsite IT Support Specialist to provide technical guidance, escalation support, and timely resolution of complex infrastructure and systems issues. Participate in an on-call rotation to support critical infrastructure, respond to high-priority incidents, and ensure business continuity. Support and maintain secure GovCloud environments while ensuring compliance with applicable security, regulatory, and organizational requirements. Functional Competencies Strong working knowledge of Microsoft 365, Microsoft Azure, Active Directory, and core Windows Server technologies. Experience administering Amazon Web Services (AWS), Nutanix virtualization, enterprise security platforms, and hybrid infrastructure environments. Strong networking knowledge with the ability to troubleshoot connectivity and infrastructure issues across enterprise environments. Solid understanding of networking concepts, including TCP/IP, DNS, DHCP, subnets, VLANs, static routing, and switching technologies. Hands-on experience configuring, managing, and troubleshooting enterprise firewall solutions and network security appliances. Working knowledge of Cisco Identity Services Engine (ISE) and network access control technologies. Experience developing or supporting automation using PowerShell or other scripting tools to improve operational efficiency. Strong analytical and problem-solving skills with the ability to diagnose and resolve complex technical issues. Excellent verbal, written, and interpersonal communication skills, with the ability to effectively collaborate with technical and non-technical stakeholders. Demonstrated commitment to delivering exceptional customer service while managing multiple priorities in a fast-paced environment. What You Will Bring: Bachelor degree preferred or equivalent experience 5+ years enterprise infrastructure administration experience Strong Microsoft 365, Azure, AWS and Windows/Linux Server experience We'll be accepting applications until August 14, 2026 3D Systems is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to, among other things, race, color, ethnicity, religion, sex, age, sexual orientation, genetic information, marital status, gender identity or national origin or because he or she is an individual with a disability or a disabled veteran, Armed Forces service medal veteran (referred to collectively as "protected veterans"). The Company also provides applicants with equal employment opportunities without regard to pregnancy, childbirth, medical needs arising from pregnancy or childbirth, and related medical conditions including, but not limited to, lactation. Primary Location: US-CO-Littleton Job Level: Individual Contributor Travel: No Type of Position: Employee Job Posting: Jul 27, 2026, 3:48:02 PM #J-18808-Ljbffr