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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Systems Administrator - **Company:** GreenWaste Recovery LLC - **Location:** San Jose, CA, United States - **Experience:** Expert - **Salary:** $125,000.0 - $145,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Microsoft Azure, Cloud Computing, Cyber Security, Information Systems, Disaster Recovery, Internet Protocol, Microsoft Software, Microsoft SQL Server, Windows Servers, Network Architecture, Network Administration, Platform as a Service (PAAS), Systems Integration, Virtualization Technology, Software Vulnerability Management, Comptia Server+, Information Technology, Firewall Services Module - **Published:** June 17, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=6e72cfa1f1409ef8 ## About the Role Do you have experience in Windows support?, Do you have a Bachelor's degree?, * Strong technical expertise in Microsoft infrastructure (Windows Server, Azure, Active Directory/Entra ID) * Ability to troubleshoot and resolve complex infrastructure issues * Strong understanding of infrastructure security and operational best practices * Excellent analytical, organizational, and problem-solving skills * Ability to communicate technical concepts to non-technical stakeholders * Experience working in an ITSM and structured change management environment * Experience with IP networking concepts * Experience with Microsoft SQL Server * Exposure to enterprise backup, monitoring, and automation tools, * Bachelor's degree or equivalent experience in Information Systems * 4+ years systems administration experience within a complex Windows environment * At least one of the following industry certifications is preferred: + MCSE Windows Server + CompTIA Server+ * Valid Driver's license, Class C Language Skill: * Proficiency in English, bilingual Spanish helpful Physical Demands: * Ability to sit or stand in front of a computer for work shift. * Ability to lift and carry at least 40lbs * Ability to bend, kneel, or crawl under desks and other furniture * Ability to climb a ladder or similar device ## Description The Senior Systems Administrator is responsible for the administration, operation, and continuous improvement of core infrastructure systems including a Microsoft technology stack located largely in the cloud, cloud-based telephony, and related, servers, applications and services across all GreenWaste locations. You will be expected to independently solve operational problems and help improve, streamline, and secure systems and data. The ideal candidate will demonstrate a forward-thinking mindset as well as an eagerness to learn new skills and technologies. The candidate must be highly technical and able to craft novel solutions to technology challenges. Essential Functions and Responsibilities: * Implement, administer, and optimize Microsoft infrastructure and platforms in alignment with approved architecture standards including + Server provisioning (on-prem and Azure) + Azure IaaS / PaaS operations + Virtualization and host management + OS and platform patching + Backup, restore, and disaster recovery execution + Infrastructure capacity and performance management * Administer Active Directory and Entra ID platforms and support identity lifecycle processes in coordination with Service Desk and Cybersecurity * Implement and support infrastructure-related platforms and integrations (e.g., backup, identity, server management tools) in coordination with Network, Cybersecurity, and End User Services teams * Execute infrastructure security controls including patching, system hardening, and vulnerability remediation in coordination with Cybersecurity, which defines policy and monitoring * Provide documentation and technical specifications to IT staff for planning and implementing new or upgrades of IT infrastructure * Lead infrastructure workstreams and deliverables within larger IT and business initiatives * Interact with the service desk and other teams to assist in troubleshooting, identify root cause, and provide escalation support when needed * Collaborate with Network Administration on infrastructure dependencies; network architecture and firewall configuration * Serve as a primary escalation resource for infrastructure incidents and actively participate in incident response and resolution. Execute and validate disaster recovery and failover procedures for infrastructure platforms, including periodic testing * Plan and execute infrastructure changes in accordance with IT change management processes * Be an escalation point for after-hours support * Perform other responsibilities as needed ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Developer Tools for Microsoft Azure](https://www.wearedevelopers.com/videos/450-developer-tools-for-microsoft-azure) - [Thinking Differently - How to Make Money from Cyber Attacks & Cheats](https://www.wearedevelopers.com/videos/745-thinking-differently-how-to-make-money-from-cyber-attacks-cheats) - [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) - [Develop enterprise-ready applications for Microsoft Teams with Azure resources on modern web technologies](https://www.wearedevelopers.com/videos/187-develop-enterprise-ready-applications-for-microsoft-teams-with-azure-resources-on-modern-web-technologies) - [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large) ## Related Articles - [A Guide to Green Tech and Green IT Careers](https://www.wearedevelopers.com/magazine/374-a-guide-to-green-tech-and-green-it-careers) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [The Best Job Search Websites of 2025](https://www.wearedevelopers.com/magazine/368-the-best-job-search-websites-of-2025) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)