Systems Administrator (FT, W2s)

Please ensure you read through the entire job posting and you also understand the work model, expectations, requirements, location, and qualification requirements for this role.

RSI Security is a leading cybersecurity compliance firm that specializes in providing comprehensive security assessment, advisory, and technical security testing services. We support organizations in navigating the complex cybersecurity landscape, ensuring they achieve and maintain compliance while managing risks effectively.

The Systems Administrator supports RSI Security’s Technical Operations team by maintaining, hardening, and monitoring client on-premises and cloud server infrastructures. This role is responsible for Windows Server administration, virtualization platforms, hybrid identity, Microsoft 365 tenant operations (Commercial and GCC/GCC High), and end-to-end backup and disaster recovery. The administrator will ensure uptime, security compliance, data integrity, and exceptional service delivery.

• Manage and secure Windows Server, virtualization, and core AD identity services
• Administer Microsoft 365 and enforce security controls (MFA, Conditional Access)
• Support GCC/GCC High environments and compliance requirements
• Perform tenant hardening, migrations, and mail cutovers
• Operate Datto backups and maintain strong DR/BCP readiness
• Lead P1 incidents with fast MTTR and follow change-management standards
• Communicate clearly during major incidents and document all technical actions
• Guide clients on modernization, cloud migration, and security improvements
• Support hardware refreshes, virtualization optimization, and DR enhancements
• Provide remote/onsite support and maintain runbooks, SOPs, IT Glue, and KBs
• Mentor junior technicians and keep documentation accurate and up to date

• Microsoft certifications in Windows Server Hybrid Administration, Microsoft 365 Administration, and Azure Administration, with baseline security knowledge (SC-900, Security+ or equivalent)
• Hands-on experience with Microsoft 365 GCC/GCC High, Azure Government, and related compliance frameworks (FedRAMP, CMMC, DFARS, ITAR)
• Additional value-add certifications such as VMware VCP or Veeam/Datto
• Strong PowerShell and automation capability
• 3–7 years administering Windows Server, plus 3+ years supporting VMware/Hyper-V virtualization
• 2+ years managing Microsoft 365 environments
• Practical experience in regulated cloud environments and with server migrations, identity sync, and secure baseline implementation

• Owns reliability of systems and communicates status proactively.
• Performs effectively during high-severity incidents.
• Works seamlessly with service desk, engineering, and security teams; mentors junior technicians.
• Seeks certifications, automates repetitive tasks, & recommends process enhancements.
• Protects client data, enforces least-privilege access, and follows compliance procedures.

• Competitive salary and commission eligibility.
• Flexible work environment.
• Comprehensive health, dental, and vision insurance.
• 401(k) retirement plan with employer match.
• Company-paid life insurance and short/long-term disability coverage.
• Professional development and certification reimbursement.
• Collaborative team culture rooted in trust and humility.

Our commitment to equity, equal opportunity, inclusion, and diversity is part of our broader commitment to respecting fundamental human rights across our value chain. RSI Security is proud to be an Equal Opportunity Employer. The Company will consider for employment qualified applicants with arrest and conviction records.

Equal Opportunity Employer/Veterans/Disabled

For more information on RSI Security, please visit our website - www.rsisecurity.com or our social media RSI Security LinkedIn. On our career site, you will find some of the key steps you can expect to guide you along the way.