Senior Systems Administrator – Microsoft 365, Azure & AWS

Radar Reinvented. Echodyne offers the world’s first compact solid-state true beam-steering radar for a wide range of industries and applications. Our high-performance radars work in all weather and are designed for autonomous vehicles, uncrewed aircraft & drones, and security of borders, critical infrastructure, and smart cities. The company combines the patented technology of metamaterials with powerful software to create a radar sensor with unprecedented performance at commercial price points. Echodyne offers its radars to companies working in Automotive, Transportation, Critical Infrastructure Protection, Border Security, Smart Cities, Uncrewed Aircraft Systems (UAS), and Airspace Management including Urban Air Mobility (UTM). Echodyne is seeking a  Senior Systems Administrator to join our fast-growing team.  ROLE OVERVIEW We are seeking an experienced Senior Systems Administrator to manage, secure, and continuously improve our Microsoft 365, Microsoft Azure, and Amazon Web Services (AWS) environments. This role will be responsible for the reliability, security, performance, and operational effectiveness of our cloud and enterprise IT infrastructure. The successful candidate will bring strong hands-on administration skills across Microsoft 365 (M365), Azure, AWS, identity and access management, endpoint management, networking, automation, monitoring, and security . The Senior Systems Administrator will also serve as a senior technical resource for the IT team, leading complex troubleshooting, infrastructure improvements, migrations, and cloud initiatives. RESPONSIBILITIES Microsoft 365 Administration Administer and support the Microsoft 365 environment, including Exchange Online, SharePoint Online, OneDrive, Teams, and related services . Manage users, groups, licenses, mailboxes, distribution lists, shared mailboxes, and service configurations. Manage Microsoft 365 security, compliance, retention, and data protection configurations. Troubleshoot complex Microsoft 365 service, authentication, mail flow, and collaboration issues. Monitor M365 service health, security alerts, and administrative changes. Develop and maintain PowerShell automation for Microsoft 365 administration. Microsoft Azure Administer and support Azure infrastructure and services, including virtual machines, storage, networking, backup, monitoring, and security . Manage Microsoft Entra ID (Azure AD) , including users, groups, enterprise applications, Conditional Access, MFA, and role-based access control. Manage hybrid identity environments and integrations between on-premises systems, Microsoft 365, and Azure. Design and maintain Azure networking, including VNets, subnets, VPNs, routing, DNS, and network security groups. Implement monitoring, backup, disaster recovery, and business continuity solutions. Review Azure workloads for reliability, security, performance, and cost optimization. Amazon Web Services (AWS) Administer and support AWS workloads and infrastructure. Manage services such as EC2, VPC, S3, IAM, Route 53, CloudWatch, AWS Backup, and related services . Configure and maintain AWS identity, permissions, roles, and security policies using least-privilege principles. Manage networking and connectivity between AWS, Azure, corporate networks, and other environments. Monitor AWS infrastructure for availability, performance, security, and cost. Support cloud migrations and deployment of new AWS workloads. Systems, Infrastructure & Operations Administer Windows Server environments, Active Directory, Group Policy, DNS, DHCP, and related infrastructure. Manage virtualization and cloud-hosted server environments. Manage endpoint configuration and security using tools such as Microsoft Intune . Maintain system patching, vulnerability remediation, backup, and recovery processes. Monitor infrastructure availability and proactively identify reliability or performance issues. Lead troubleshooting and root-cause analysis for complex infrastructure incidents. Participate in incident response and disaster recovery activities. Develop and maintain technical documentation, architecture diagrams, operational procedures, and runbooks. Work with vendors and technology partners to resolve technical issues and implement new capabilities. Security Responsibilities Apply security best practices across Microsoft 365, Azure, AWS, endpoints, and enterprise infrastructure. Implement and maintain MFA, Conditional Access, RBAC, least-privilege access, and privileged account controls . Review security alerts, audit logs, authentication activity, and infrastructure events. Partner with security teams to remediate vulnerabilities and improve the organization’s overall security posture. Support security audits, compliance activities, and evidence collection. Assist with investigation and response to security incidents. Automation & Continuous Improvement Automate repetitive administrative tasks using PowerShell, Azure CLI, AWS CLI, or other scripting and automation technologies . Identify opportunities to improve infrastructure reliability, scalability, security, and operational efficiency. Develop standardized deployment and configuration processes. Where appropriate, implement Infrastructure as Code (IaC) using technologies such as Terraform, AWS CloudFormation, or Azure Bicep. Establish monitoring, alerting, and operational dashboards for critical infrastructure. REQUIRED QUALIFICATIONS 7+ years of experience in systems administration, infrastructure engineering, cloud operations, or a comparable technical role. Strong hands-on experience administering Microsoft 365 . Strong experience with Microsoft Azure and Microsoft Entra ID . Hands-on experience administering production workloads in AWS . Strong knowledge of Windows Server and Active Directory. Experience with identity and access management, MFA, Conditional