What are the responsibilities and job description for the Principal Systems Administrator position at EXOS?
Our Company
Established in 2009, EXOS is a family of companies, formerly known as Sondhi Solutions, that provides cybersecurity, talent and IT solutions across the United States. The brand EXOS is shorthand for nature's answer to providing critical support, protection and growth for many living organisms: exoskeletons. At EXOS we believe we provide that same answer for our clients. EXOS core values are built around the importance of that symbiotic relationship with our clients and one another. We realize that the foundation of all success, both for our clients and our team, is found in people connecting, building trust, and focusing on a common purpose.
EXOS CYBER partners with businesses to solve security concerns through innovative technology and specialist expertise. Our cybersecurity offerings are designed around a defense-in-depth strategy to provide a multi-layered, robust security framework.
EXOS TALENT connects organizations with exceptional individuals, champion diversity, and unlock the full potential of human resources. Together, we are building a more inclusive and prosperous future.
EXOS IT empowers organizations with strategic IT direction and industry-leading service across public, private and nonprofit sectors. We focus on partnership to understand and achieve your goals, address challenges, and drive meaningful outcomes, together.
Our Values
We are Empowering:
At EXOS we empower our clients by providing them with essential strategic IT guidance, reliable service, and the talent necessary to achieve their business goals. We empower our team by living a culture of collaboration, trust, and learning, creating growth opportunities, and charting a clear career path for all our team members.
We are Connected:
At EXOS we are connected to our clients and their purpose. We are not just a talent and technology partner; we are an extension of your business. We seek to understand where leadership is driving the company, and we connect across all aspects of the business necessary to make that goal a reality. We
are connected to the communities we serve and invested in organizations that make them great places to live. As the EXOS team, we are connected through our common commitment to our cultural imperatives: the 'Three Ps' ? Be Positive, Be Productive and Be Progressive in the since that we are always challenging each other to learn and grow.
We are Trusted:
For more than fifteen years EXOS has been a trusted partner in providing Talent, IT and Cybersecurity solutions for our clients. Whether it's servicing large-scale enterprise clients or start up professional firms, our team is there to help solve pain points and provide strategic direction. The trust we have with one another as a team is earned. We live a culture of accountability with a goal of excellence. We are invested in one another's success, personally and professionally. We are a trust first, learn together and celebrate collectively team.
What You Will Do
As a Principle Systems Engineer, you will architect, secure, and maintain the enterprise identity and collaboration landscape of both ourselves and our Clients. This senior-level role focuses on high-level Microsoft 365 administration, Intune endpoint management, and the robust management of Windows Server and Active Directory (AD) environments. You will serve as a Tier 3 escalation point, leading complex infrastructure projects and migrations while ensuring optimal performance and security across hybrid environments.
Advanced Technical Support:
? Provide expert-level technical support to resolve complex IT issues escalated from Tier 1 and
? Tier 2 teams, ensuring timely and effective solutions.
? Analyze and resolve complex technical problems related to hardware, software, network, and
? applications promptly and effectively.
Incident Management:
? Lead the resolution of critical incidents, identifying root causes and implementing permanent
fixes to prevent future occurrences.
Troubleshooting:
? Diagnose and resolve hardware, software, network, and application issues across the
organization's IT environment.
Infrastructure Management:
? Monitor and maintain the organization's servers, networks, and systems to ensure optimal
performance, security, and availability.
Vendor Coordination:
? Liaise with third-party vendors and service providers to troubleshoot and resolve technical
issues, ensuring effective communication and timely resolution.
Documentation:
? Maintain accurate and up-to-date documentation of IT processes, procedures, configurations,
and troubleshooting steps.
Knowledge Sharing:
? Provide training and knowledge transfer to Tier 1 and Tier 2 support teams to enhance their
technical skills and capabilities.
Project Support:
? Assist in the planning, implementation, and maintenance of IT projects, including system
upgrades, migrations, and new technology deployments.
Capacity Planning:
? Monitor system performance trends and collaborate with relevant teams to anticipate and
address capacity requirements.
Infrastructure & Architecture
? M365 & Collaboration: Design and manage the M365 tenant, including Exchange Online, Teams, and SharePoint. Implement governance, security protocols (MFA, Conditional Access), and Data Loss Prevention (DLP) strategies.
? Intune & Endpoint Management: Architect and deploy modern device management solutions using Microsoft Intune and Windows Autopilot. Create and enforce device compliance and application protection policies.
? SQL Optimization: Assist Clients with advanced SQL issues, suggest Database optimizations, and offer advanced guidance to better utilize SQL environments.
? Identity & Directory Services: Administer and secure on-premises Active Directory and Microsoft Entra ID (Azure AD). Manage hybrid identity architectures, GPO design, and core services like DNS, DHCP, and PKI.
? Server Infrastructure: Support and optimize Windows Server environments, including virtualization platforms like VMware or Hyper-V, and hardware platforms such as Scale and Nutanix. Lead server migrations and OS upgrades.
? Security & Compliance: Conduct root cause analysis on critical outages and proactively remediate security risks.
? Incident Response: Participate in a 24/7 on-call rotation to respond to, troubleshoot, and resolve critical incidents in a timely manner.
What You Have Done
Required Qualifications:
? Experience: 7 years in systems engineering, with at least 3-5 years focused specifically on M365, Intune, and enterprise-level AD management.
? M365: Expert administration of Exchange, Teams, and Entra ID.
? Intune: Proven experience in MDM/MAM, Autopilot, and endpoint security.
? Server/AD: Advanced knowledge of AD FSMO roles, Group Policy, and Windows Server 2012-2025.
? Education: Bachelor's degree in Computer Science, IT, or a related field; or equivalent professional experience.
? Soft Skills: Strong analytical troubleshooting, client engagement, and the ability to mentor junior staff.
? Networking: Solid understanding of networking concepts (TCP/IP, DNS, VPNs, firewalls, load balancing, etc.).
? Virtualization: Experience with virtualization technologies such as VMware or Hyper-V.
? Backups: Knowledge of backup and disaster recovery strategies and tools.
? Strong communication and teamwork skills to collaborate effectively across departments.