Sr. Systems Administrator

Sr. Systems Administrator Job Location: Manassas, VA Eligibility/Clearance: US Citizen or Green Card Holder We are seeking a skilled and experienced System Administrator to join our team. The ideal candidate will manage and maintain our Microsoft Windows systems, endpoint security, and cloud infrastructure. Here are the key requirements and responsibilities for this role: Technical Skills: Active Directory (AD) and Group Policy Objects (GPO): - Proficient in managing and maintaining Active Directory, including creating and managing security groups. - Experienced in implementing and troubleshooting Group Policy Objects for efficient system configuration. - Proficient in managing Windows Server Infrastructure (2016/2019/2022). - Experience with Microsoft Office, Office365, Active Directory, File Clusters, and Print Servers. Vulnerability Assessment and Security Frameworks: - Thorough knowledge of conducting vulnerability assessments to identify and mitigate potential security risks. - Familiar with security frameworks such as CIS and NIST guidelines, ensuring compliance with industry standards. - Previous knowledge of implementation of Zero-Trust architecture. - Implement and administrate endpoint security tools, including EDR solutions. Cloud Services: - Solid understanding and practical experience in utilizing Azure services for cloud-based solutions. - Proficient in deploying and managing resources on the Azure platform. Virtualization: - Skilled in virtualization technologies, including setup, configuration, and maintenance of virtual environments. - Extensive experience in optimizing virtual resources to enhance overall system performance. Asset Management: - Well-versed in asset management practices, including tracking, inventory, and lifecycle management of IT assets. - Skilled in implementing efficient asset management systems for improved organizational efficiency. Scripting and Automation: - Experience interpreting, writing, and debugging PowerShell scripts for automation. Responsibilities: System Maintenance: - Maintain Operating System baselines for Windows Servers and Workstations. - Implement, install, configure, monitor, troubleshoot, and evaluate Microsoft Windows operating systems. Enhancements and Recommendations: - Recommend and implement system enhancements to improve performance and reliability. - Install, upgrade/patch, monitor, troubleshoot, and perform configuration management. Security Implementation: - Implement hardened settings to improve the security posture of endpoints. - Restrict the use of local admin accounts and implement the least privilege principle. Support and Diagnostics: - Provide support to technical staff in diagnosing and correcting system-related failures. - Determine logical solutions to complex system administration and application problems. Disaster Recovery and Replication: - Implement and manage disaster recovery strategies. - Configure and maintain replication processes for critical systems. Academic Qualifications - Bachelor's (BS) degree in computer science, management information systems, or a related field. - Certification in a related field (Security +, MSA, MCSE) would be considered a plus. - Microsoft Azure certification (AZ-900, AZ104) will be considered a plus. Desired Skills - Good communication skills and a strong work ethic. - Work as an adaptable team player. - Working knowledge of CIS controls. - General knowledge of Cloud technologies, such as Office 365 Minimum Experience - 10 years of relevant experience with Microsoft Windows server operating systems, Active Directory, Group Policies, Cyber Security, and TCP/IP networking. Arena Technical Resources, LLC, (ATR) is an Equal Opportunity Employer (EOE) who will provide equal employment opportunity to employees and applicants for employment without regard to race, ethnicity, religion, color, sex, pregnancy, national origin, age, veteran status, ancestry, sexual orientation, gender identity or expression, marital status, family structure, genetic information, or mental or disability. ATR Inc