Senior Systems Administrator

We are seeking a skilled and self-driven Systems Administrator with strong expertise in cloud services, Microsoft enterprise technologies, virtualization, and modern security platforms The ideal candidate will have hands‑on experience with AWS, Microsoft 365/Intune, VMware, and Zscaler, and will play a key role in maintaining secure, scalable, and well‑documented systems. This position is best suited to someone who enjoys solving technical challenges, improving infrastructure through automation and best practices, and operating with autonomy in a dynamic environment. Responsibilities Core Responsibilities Manage AWS environments and implement infrastructure-as-code using Terraform Administer Microsoft 365 and Exchange Online Configure and manage Intune for device/application security Network Security & Access Maintain and optimize Zscaler (ZIA, ZPA, ZDX) Implement security policies, access controls, and monitoring standards Maintain VMware vSphere 8 (vCenter, ESXi, Horizon View) Skills Required Qualifications Required 4+ years’ experience in systems administration or similar role 2+ Experience with AWS, Microsoft 365/Exchange, VMware, Zscaler Strong troubleshooting and problem-solving skills Ability to operate independently and collaboratively Preferred Certifications in one or more: AWS, Microsoft, VMware, or Zscaler Scripting/automation background Familiarity with compliance and regulatory frameworks relevant to IT (e.g., CMMC, NIST 800-171 or C-SCRM). Additional Value-add Skills Enterprise hardware management (PowerEdge, SANs, Unifi) Understanding of CMMC, NIST, or C-SCRM frameworks Experience tuning Defender, Horizon View, or IIS Candidates who meet 70–80% of the core requirements are encouraged to apply — we value growth, curiosity, and capability over perfection. We offer competitive salaries commensurate with education and experience. We have an excellent benefits package that includes: Comprehensive health, dental, life, long and short-term disability insurance 100% Company funded Retirement Plans Generous vacation, holiday and sick pay plans Tuition assistance About Tecolote Research Tecolote Research is a private, employee-owned corporation where people are our primary resource. Our investments in technology and training give our employees the tools to ensure our clients are provided the solutions they need, and our very high employee retention rate and stable workforce is an added value to our customers. View all career opportunities: Follow us on social media: LinkedIn | X @TecoloteInc | Facebook #J-18808-Ljbffr