Senior Systems Administrator

Senior Systems Administrator

Tucson AZ

Company Overview

Ondas is building a new kind of intelligence company one designed for a world where speed autonomy and decision advantage matter more than ever. By combining multi-domain platforms advanced sensing secure networks and AI-enabled analytics Ondas helps defense government and critical infrastructure customers transform complex mission data into decision-ready insights when and where they matter most.

Ondas Sentinel is Ondas defense division purpose-built to deliver U.S. delivered capabilities for the Department of Defense and allied ministries of defense. The division brings together advanced autonomous systems mission technologies and intelligence solutions that help customers create persistent awareness operate with confidence and make faster decisions in complex and contested environments.

The Stratospheric ISR business unit within Ondas Sentinel is focused on one of the most unique mission areas in aerospace and defense: manufacturing and operating high-altitude stratospheric balloon systems. Few companies in the world can do this work at operational scale. That means our teams are not simply maintaining existing systems; they are building new capabilities solving first-of-their-kind challenges and helping define what persistent

Job Description

The Senior Systems Administrator serves as a senior technical leader within the IT Infrastructure team. This role is responsible for the design administration security and reliability of core enterprise systems including on-premises and cloud infrastructure identity and access management platforms endpoint management solutions and backup and recovery services.

This is a hands-on technical role not a people-management position. The Senior Systems Administrator works closely with Infrastructure Security Network and Application teams to ensure systems remain secure scalable resilient and aligned with business objectives.

The role operates within a regulated environment and supports compliance initiatives through effective system administration security controls documentation and operational excellence. This role is based on-site in Tucson Arizona and requires regular engagement with IT Security Infrastructure Network Application and business teams. Travel may be required to support other company locations vendors audits or operational readiness activities.

Key Responsibilities

• Administer and maintain core infrastructure platforms including Windows Server virtualization environments storage systems and backup solutions.
• Manage and secure Microsoft 365 and Microsoft Entra ID including identity lifecycle management Conditional Access MFA and privileged access controls.
• Deploy manage and harden endpoint environments using Microsoft Intune Group Policy and endpoint security solutions.
• Design implement and maintain backup disaster recovery and business continuity capabilities; regularly test and validate recovery procedures.
• Perform system patching vulnerability remediation and security hardening across server and endpoint environments.
• Support system-level incident response containment recovery and post-incident remediation activities.
• Develop and maintain system documentation runbooks diagrams configuration standards and asset inventories.
• Lead infrastructure modernization initiatives including cloud adoption platform upgrades and technology lifecycle management.
• Provide technical guidance and mentorship to junior administrators and support personnel.
• Collaborate with vendors and managed service providers to support operational and project-related objectives.

Required Qualifications

• Minimum of 5 years of experience in systems administration infrastructure engineering or a related technical discipline.
• Strong hands-on experience with Windows Server administration Microsoft 365 and Microsoft Entra ID Active Directory and Group Policy identity and access management and backup and disaster recovery solutions.
• Experience implementing least-privilege access models privileged account management and secure system configurations.
• Proven ability to troubleshoot and resolve complex infrastructure issues across multiple technologies.
• Strong documentation organizational and operational discipline.
• Excellent communication and collaboration skills.
• U.S. Citizenship required.

Preferred Qualifications

• Experience supporting regulated government aerospace defense or security-focused environments.
• Familiarity with infrastructure controls supporting NIST 800-171 CMMC DFARS SOX or similar compliance frameworks.
• Experience with Conditional Access Privileged Identity Management Just-in-Time access and identity governance solutions.
• Experience managing hybrid environments spanning on-premises and Microsoft Azure workloads.
• Experience supporting incident response forensic preservation and recovery operations.
• PowerShell scripting and infrastructure automation experience.
• Microsoft certifications such as Azure Administrator Microsoft 365 Administrator Security Administrator or related credentials.
• Experience with virtualization platforms such as VMware or Hyper-V.

What We Offer

As Senior Systems Administrator you will help strengthen the core technology foundation that supports Ondas Sentinels mission ensuring the systems our teams rely on are secure resilient scalable and ready for growth.

You will work side by side with experts in emerging technology gaining exposure to cutting edge ideas and projects that are shaping the future. We offer a comprehensive benefits package including Medical Dental Vision and Life Insurance because we believe in taking care of the you as a person not just a team member.

Our Tucson workplace is designed to support collaboration focus and well-being with an on-site environment that keeps IT security infrastructure engineering manufacturing quality and program teams closely connected to the mission.

We believe in creating a dynamic and inclusive workplace where creativity thrives and every voice is heard. Our commitment to all team members is built upon five core cultural pillars: Engage Lean In Create Care and Own. Together these pillars form the foundation of our employee experience while adhering to the highest standards of ethical and sustainable practices.

Some Final Notes

The description gives you a sense of what the position involves but is not an exhaustive list. We are a growing and evolving team which means your responsibilities may shift or expand over time as new opportunities arise. Flexibility and curiosity are part of what make our work exciting!

At Ondas Sentinel we are proud to be an equal opportunity employer. We celebrate belonging and diversity and are committed to creating an inclusive environment for all team members. We welcome applications from every background and life experience because we know our differences make us stronger.