RSI Security · 2 months ago
Systems Administrator (FT, W2s)
United States
Full-time
Remote
Mid, Senior Level
3+ years expRSI Security is a leading cybersecurity compliance firm that specializes in providing comprehensive security assessment and advisory services. The Systems Administrator will support the Technical Operations team by maintaining and monitoring client server infrastructures, ensuring security compliance and exceptional service delivery.
Cyber SecurityInformation Technology
Responsibilities
Own the reliability, security, and performance of client Windows Server, virtualization, and Active Directory / hybrid identity environments
Administer Microsoft 365 (Commercial + GCC/GCC High) and enforce tenant security controls
Execute and validate tenant hardening, migrations, identity sync projects, and mail cutovers with minimal business disruption
Operate and continuously improve backup, disaster recovery, and business continuity readiness
Produce clear incident documentation and post-incident remediation plans
Own and enforce change-management standards, ensuring approvals, backout plans, and documentation are complete and audit-ready
Partner with Service Desk, TAC, and Security teams to prioritize escalations and ensure consistent service delivery across TechOps
Guide clients on modernization initiatives, cloud migration strategy, and security enhancements aligned to compliance frameworks
Assist infrastructure improvement efforts including hardware refreshes, virtualization optimization, patching standards, and DR enhancements
Maintain and continuously improve operational runbooks, SOPs, and knowledge base documentation in IT Glue, ensuring high adoption and accuracy
Mentor junior technicians by setting expectations, providing coaching, and raising the team’s technical and documentation quality standards
Qualification
Required
Relevant Microsoft certifications in Windows Server Hybrid Administration, Microsoft 365 Administration, and Azure Administration, with baseline security knowledge
Proven experience supporting Microsoft 365 Commercial and GCC/GCC High environments, including Azure Government, identity integration, and regulated tenant operations
Strong working knowledge of compliance-driven environments and frameworks such as FedRAMP, CMMC, DFARS, and ITAR, with a disciplined approach to documentation and change control
Advanced hands-on capability in Windows Server administration
Experience supporting virtualization platforms (VMware and/or Hyper-V), including lifecycle management, optimization, and troubleshooting
Strong PowerShell / automation skills, with the ability to streamline operational tasks and reduce repeat incidents through scripting and standardization
Experience executing complex projects including server migrations, tenant hardening, identity sync/SSO implementation, and secure baseline deployment
Demonstrated ability to lead through high-severity incidents (P1/P2)
3–7 years of Windows Server administration in production environments
3+ years supporting VMware/Hyper-V virtualization
2+ years administering Microsoft 365 environments (Commercial and/or GCC/GCC High)
Preferred
Value-add certifications such as VMware VCP, Veeam, Datto, or similar infrastructure/backup credentials
Knowledge in EOS System is a plus
Benefits
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.
Company
RSI Security
RSI Security is a cyber-security-focused technology company that helps private and public sector organizations.
51-200 employees
H1B Sponsorship
RSI Security has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2023 (1)
Funding
Current Stage
Growth StageLeadership Team
John Shin
Managing Director
Recent News
2025-02-25
Company data provided by crunchbase