Sr System Administrator

Corporate Headquarters
Chantilly, VA 20151, USA

Pavion Connects and Protects by providing innovative fire, security, and communication integration solutions to customers across the globe. We bring industry-leading expertise to clients in enterprise, healthcare, education, government, data center, and retail industries.
Global Reach. Local Service.

As a global leader, Pavion specializes in the design, installation, service, and maintenance of cutting-edge fire alarm systems, critical communications, video surveillance, access control, and advanced AV technologies. Our mission is to bring clarity and transformation to safety, security, and communication through integral technology and radical service.

With a commitment to safety, reliability, and operational excellence, Pavion ensures scalable, future-ready solutions tailored to meet and exceed our clients’ needs. Learn more at

Pavion and our family of companies are seeking a talented and motivated Sr System Administrator to join our shared services team.

Primary Responsibilities:

• Serve as a technical leader for enterprise infrastructure spanning Microsoft Azure, Microsoft 365, AWS, and core SaaS platforms.
• Partner with cross-functional teams and business stakeholders to design solutions that scale and remain resilient under load.
• Take charge during outages: direct response efforts, coordinate across teams, and communicate status clearly to stakeholders at all levels.
• Lead root cause analysis following incidents and drive corrective actions to prevent recurrence.
• Own and maintain high-availability infrastructure across multiple locations and cloud environments.
• Lead infrastructure projects — implementations, migrations, upgrades, and acquisition integrations — from planning through execution.
• Administer identity and access management platforms, including Active Directory, ADFS, and Microsoft Entra.
• Support enterprise datacenter infrastructure including compute, storage, networking, and disaster recovery systems.
• Act as a mentor and subject-matter expert, translating complex technical topics into clear, actionable guidance for both technical and non-technical audiences.
• Develop and maintain infrastructure documentation, standards, and operational procedures.
• Identify and champion opportunities for automation and process improvement.
• Participate in 24x7 operational support as needed.

Basic Qualifications:

• 10+ years of progressive experience supporting enterprise IT infrastructure, with demonstrated leadership in incident response and cross-team coordination.
• Proven experience operating and maintaining high-availability (HA) environments.
• Extensive experience with Windows Server, Hyper-V, and VMware administration.
• Experience with identity and access management platforms, including Active Directory, ADFS, and Microsoft Entra.
• Experience managing Microsoft 365, Azure, and AWS environments.
• Experience supporting enterprise networking and telecommunications systems.
• Proven track record leading root cause analysis and driving preventive measures.
• Strong verbal and written communication skills, with the ability to translate complex technical issues for varied audiences.
• Demonstrated ability to build and maintain effective partnerships across teams to deliver scalable solutions.

Preferred Qualifications:

• Bachelor's degree in Information Technology, Computer Science, Engineering, or related field, or equivalent work experience.
• Experience administering Palo Alto Networks firewalls, including security policies, VPN connectivity, and threat prevention.
• Experience deploying and supporting Cisco Meraki networking solutions.
• Knowledge of network segmentation, zero trust principles, and enterprise security architecture.
• Familiarity with mobile device management (Intune,…