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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # System Administrator - **Company:** Firstmark Credit Union - **Location:** San Antonio, TX, United States - **Experience:** Experienced - **Salary:** $80,000.0 - $85,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Address Resolution Protocols, Microsoft Azure, Backup Devices, Microsoft Online Services, Computer Networks, Data Loss, Dynamic Host Configuration Protocol, Linux, Disaster Recovery, Domain Name System (DNS), VMware ESX Servers, Failover Clustering, Subnetting, Linux System Administration, Logical Volume Manager, System Center Configuration Manager, Windows Servers, Network Administration, NT File System (NTFS), Package Management Systems, Windows PowerShell, Broadcom, SQL Databases, Storage Virtualization, Virtualization Technology, VMware VSphere, Microsoft InTune, Selinux, Information Technology, Vcenter, Performance Monitor, Patch Management, Vmware - **Published:** June 7, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=97764cbac28f56c9 ## About the Role Do you have experience in vCenter?, Do you have a Bachelor's degree?, * Intermediate expertise in Windows Server administration, including: + Active Directory & Group Policy + SMB shares and NTFS permissions + Windows Server Failover Clusters * Intermediate expertise with Microsoft 365, including Azure, Intune, Exchange Online, and Teams * Intermediate experience with Broadcom (VMware) technologies (vCenter, ESXi, vSAN) * Intermediate experience with Omnissa Horizon administration * Intermediate expertise in Linux server administration, including: + Package management + LVM/block device management + SELinux * Solid understanding of backup concepts, including incremental/reverse incremental chains and GFS backups * Familiarity with: + SCCM and patch management + Windows imaging and WIM file maintenance + macOS administration + Networking concepts (ARP, DHCP, DNS, subnetting) + SQL administration * Ability to explain technical solutions to non-technical stakeholders in a professional, approachable manner Preferred Qualifications * Strong desire to learn, grow, and take on new challenges * Detail-oriented mindset with a commitment to best practices * Intermediate PowerShell scripting skills * Relevant certifications, such as: + Microsoft Certified: Windows Server Hybrid Administrator Associate + Microsoft Certified: Azure Fundamentals (or higher) + Microsoft 365 Certified: Fundamentals (or higher) + Omnissa Certified Administrator - Horizon (or higher) * Bachelor's degree in Information Technology or a related field, or at least 2 years of consecutive experience in a related role ## Description We're looking for a System Administrator who enjoys solving complex problems, strengthening infrastructure, and keeping mission-critical systems running at peak performance. In this role, you'll work with minimal supervision to provision, configure, maintain, and continuously improve our IT environment while ensuring reliability, security, and scalability. You'll play a hands-on role across Windows, Microsoft 365, virtualization, and Linux systems, collaborating closely with IT teammates and business partners. If you're proactive, technically curious, and driven by best practices, this is an opportunity to make a meaningful impact. What You'll Do * Ensure maximum availability, performance, and stability of systems, infrastructure, and applications using proactive monitoring * Provide Tier 2/3 support for escalated and unresolved issues * Perform root cause analysis and partner with incident response teams to implement corrective actions * Maintain thorough documentation and ensure complete follow-through on projects * Advise on and implement efficiency and performance improvements * Manage and test backup, disaster recovery, and business continuity plans * Respond to data loss incidents and restore systems as needed * Collaborate with Network Administrators, System Administrators, and other IT staff on system design and implementation * Provide guidance and technical support to internal departments * Configure, maintain, and troubleshoot: + Windows Server Failover Clusters + Microsoft 365 (Azure, Intune, Exchange Online, Teams) + Broadcom (VMware) vSphere environments (vCenter, ESXi, vSAN) + Omnissa Horizon environments + SQL operations and performance * Participate in on-call rotation, including after hours and weekends * Perform other duties as assigned ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Hacking MSSQL on Cloud. All of them. How I became sysadmin on Azure, AWS, GCP and Alibaba.](https://www.wearedevelopers.com/videos/100339-hacking-mssql-on-cloud-all-of-them-how-i-became-sysadmin-on-azure-aws-gcp-and-alibaba) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [System change: restart as developer?](https://www.wearedevelopers.com/magazine/39-system-change-restart-as-developer) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [How to Write a CV and Interview if You Don't Fully Qualify For The Job](https://www.wearedevelopers.com/magazine/183-how-to-write-a-cv-and-interview-if-you-don-t-fully-qualify-for-the-job) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)