Systems Administrator (FT, W2s)
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Job Location:
San Diego, CA - USA
Monthly Salary:
Not Disclosed
Posted on:
30+ days ago
Vacancies:
1 Vacancy
Job Summary
WE ARE HIRING
Systems Administrator
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.
About Us
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.
About the Role
The Systems Administrator supports RSI Securitys 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.
What Youll Do
- 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 teams technical and documentation quality standards
What Youll Bring
- 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)
- Value-add certifications such as VMware VCP Veeam Datto or similar infrastructure/backup credentials
- 37 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)
- Knowledge in EOS System is a plus
Mindset We Value
- 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.
What We Offer
- 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 - 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.
Required Experience:
Senior IC
Key Skills
- Computer Science
- Active Directory
- Computer information Technology
- PowerShell
- OS
- Windows
- Database
- SCCM
- Linux
- SAN
- Troubleshoot
- Backup
- Setup
- Technical Support
- UNIX
About Company
RSI Security is an expert cybersecurity and managed IT security provider. Helping companies achieving compliance and risk-management success in all industries. Contact us today!
