Systems Administrator

Systems Administrator We are seeking an experienced Senior Systems Administrator to manage and maintain our hybrid infrastructure environment. The ideal candidate will have deep expertise in both Windows and Linux systems, cloud technologies, identity management solutions, and security compliance. As a space industry company pursuing government contracts, we require professionals who understand the critical importance of security, compliance, and operational excellence in regulated environments. Key Responsibilities - Manage and maintain production server environments, ensuring maximum uptime and performance - Administer Microsoft Entra ID (Azure Active Directory) including user provisioning, group policies, and conditional access policies - Configure and manage Gusto/Entra ID integration for automated employee onboarding and off-boarding workflows - Administer on-premises Active Directory Domain Services (AD DS) infrastructure, including domain controllers, Group Policy, and DNS - Design, implement, and maintain PKI infrastructure using Step CA or similar certificate authority solutions - Support and troubleshoot Windows Server and Linux systems across physical and virtual environments - Manage virtualization platforms including Proxmox, VMware vSphere, Hyper-V, or similar technologies - Administer and maintain TrueNAS storage systems, including configuration, performance optimization, and capacity planning - Deploy, configure, and manage ManageEngine solutions for IT operations, asset management, and service desk functions - Implement and maintain comprehensive backup and disaster recovery solutions with documented procedures and regular testing - Monitor system performance and respond to alerts and incidents - Automate routine tasks using PowerShell, Bash, and Python scripting - Working knowledge of AWS cloud infrastructure including EC2, S3, VPC, IAM, and other core services - Collaborate with development and operations teams to support application deployments - Maintain comprehensive documentation of systems, processes, and procedures - Implement and maintain security controls in accordance with NIST 800-171, CMMC, and other relevant compliance frameworks - Ensure systems meet government security requirements and support audit activities - Provide technical guidance and support to junior team members Required Qualifications Must-Have Skills: - Production Server Experience: Proven track record managing mission-critical production environments with high availability requirements - Entra ID Administration: Hands-on experience with Microsoft Entra ID (Azure AD) administration, including identity governance, conditional access, and hybrid identity scenarios - Active Directory Domain Services (AD DS): Extensive experience deploying and managing AD DS, including forest/domain design, Group Policy management, and integration with cloud identity services - Windows/Linux Expertise: Advanced proficiency in both Windows Server (2016/2019/2022) and Linux distributions (RHEL, Ubuntu, CentOS) - Scripting & Automation: Demonstrated experience with PowerShell and Bash scripting for automation and system management - Virtual Machine Experience: Solid experience with virtualization technologies such as Proxmox, VMware vSphere, Hyper-V, or AWS EC2 - Storage Administration: Experience managing enterprise storage solutions such as TrueNAS or similar NAS/SAN platforms - Security & Compliance: Understanding of security best practices and experience implementing controls for regulated environments Additional Requirements - Bachelor's degree in computer science, Information Technology, or equivalent experience - 5+ years of systems administration experience, preferably in regulated industries (aerospace, defense, or government contracting) - Strong understanding of networking concepts (TCP/IP, DNS, DHCP, VPN, VLANs) - Experience with monitoring and alerting tools - Excellent problem-solving and analytical skills ... (truncated, view full listing at source)