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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Systems Administrator - **Company:** CareerCircle - **Location:** Richardson, TX, United States - **Experience:** Expert - **Salary:** $104,000.0 - $145,600.0 - **Contract:** Temporary contract - **Skills:** Microsoft Windows, Active Directory, Systems Engineering, Configuration Management, CompTIA Security+, Cyber Security, Linux, Identity and Access Management, Information Systems Security Architecture Professional, Python (Programming Language), Microsoft Office, System Center Configuration Manager, Windows Servers, Azure Active Directory, Salesforce.Com, Server Administration, Microsoft SharePoint, User Provisioning Software, Virtualization Technology, Software Vulnerability Management, Okta, Microsoft InTune, Information Technology, Patch Management, Vmware - **Published:** October 7, 2026 - **Apply:** https://www.careercircle.com/jobs/all/all/usa/tx/richardson/f7385ab4-6d73-4339-8c22-b228e9d155ae ## About the Role Virtualization Windows Servers Desktop Support Active Directory Operating Systems CompTIA Security+ IT Infrastructure Knowledge Transfer Business Valuation Technical Standard Systems Engineering Endpoint Management Technical Leadership Top Secret Clearance System Administration Server Administration Full Stack Development Business Transformation Configuration Management Cybersecurity Compliance Infrastructure Management IAT Level II Certification Windows System Administration Continuous Improvement Process Troubleshooting (Problem Solving) Certified Information Systems Security Professional, Beyond hands-on technical responsibilities, this position serves as a Senior technical leader, providing guidance, mentorship, and knowledge transfer to junior administrators and support personnel while helping establish operational best practices, technical standards, and system administration procedures. The successful candidate will act as a trusted technical resource across cross-functional teams, supporting complex troubleshooting efforts, driving continuous improvement initiatives, and ensuring the stability, performance, and security of enterprise systems. The role requires extensive experience managing Microsoft Endpoint Configuration Manager (MECM), administering enterprise server environments, supporting virtualized infrastructure, and maintaining secure computing environments aligned with compliance frameworks such as RMF and DFARS. Candidates should demonstrate a strong security-focused mindset, supported by industry certifications such as Security+, CISSP, or equivalent credentials, and experience operating within cleared government or defense environments. This position is well suited for a seasoned Systems Administrator who can balance strategic technical leadership with hands-on administration, support critical infrastructure operations, mentor developing team members, and serve as a subject matter expert for systems, security, compliance, and enterprise endpoint management. Skills Windows, System administrator, Vmware, Active directory, Windows server, Linux, Infrastructure, Server administrator, Systems engineering, Security Top Skills Details Windows,System administrator,Vmware,Active directory,Windows server,Linux,Infrastructure,Server administrator, Senior Systems Administration (Linux & Windows) o Expert-level experience administering enterprise server environments, operating systems, infrastructure services, and supporting complex troubleshooting and operational activities. Endpoint Management, Server Operations & Virtualization o Extensive hands-on experience with MECM, desktop support, server administration, VMware, and enterprise infrastructure management. Cybersecurity, Compliance & Cleared Environment Support o Security certifications (Security+, CISSP, etc.), experience with RMF and DFARS compliance requirements, and the ability to operate effectively within security-sensitive government or defense environments. Job Type & Location, Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors. ## Description Senior Systems Administrator (Top Secret Clearance Required & Sec+ or equivalent IAT Level 2 cert), This role is a Senior-level Systems Administrator position responsible for the administration, security, compliance, and operational support of enterprise IT infrastructure within highly regulated and mission-critical environments. The ideal candidate possesses deep expertise in Linux and Windows systems administration, endpoint management, server operations, desktop support, and virtualization technologies such as VMware., Operations Management Governance Communication Microsoft 365 Desktop Support Customer Service Patch Management Microsoft Windows Endpoint Security User Provisioning Device Management Business Valuation Financial Services Endpoint Management Microsoft SharePoint System Administration Financial Institution Full Stack Development Azure Active Directory Infrastructure Security Business Transformation Hardware Troubleshooting Vulnerability Management Office 365 Exchange Online End-User Training And Support Identity And Access Management Microsoft Certified Professional Troubleshooting (Problem Solving) Microsoft Intune (Mobile Device Management Software) +0 Google IT Automation with Python Google IT Support Salesforce Admin Salesforce Developer Systems Administrator TEKsystems Plano, TX*On-Site Okta Operations Management Governance Communication Microsoft 365 Desktop Support Customer Service Patch Management Microsoft Windows Endpoint Security User Provisioning Device Management Business Valuation Financial Services Endpoint Management Microsoft SharePoint System Administration Financial Institution Full Stack Development Azure Active Directory Infrastructure Security Business Transformation Hardware Troubleshooting Vulnerability Management Office 365 Exchange Online End-User Training And Support Identity And Access Management Microsoft Certified Professional Troubleshooting (Problem Solving) Microsoft Intune (Mobile Device Management Software) +0 Google IT Automation with Python Google IT Support Salesforce Admin Salesforce Developer Sr Systems Administrator TEKsystems Richardson, TX*On-Site Linux Operations Mentorship Virtualization Windows Servers Desktop Support Active Directory Operating Systems CompTIA Security+ IT Infrastructure Knowledge Transfer Business Valuation Technical Standard Systems Engineering Endpoint Management Technical Leadership Top Secret Clearance System Administration Server Administration Full Stack Development Business Transformation Configuration Management Cybersecurity Compliance Infrastructure Management IAT Level II Certification Windows System Administration Continuous Improvement Process Troubleshooting (Problem Solving) Certified Information Systems Security Professional +0 Google IT Support