Systems Administrator

RSI Security; United States; Remote; USD 55,000 - 65,000; Full time

Benefits offered by this job

Flexible work environment

Comprehensive health, dental, vision

401(k) with employer match

Professional development reimbursement

Job summary

RSI Security is seeking a detail-driven Systems Administrator to safeguard client systems and ensure robust backup integrity. You will manage on‑prem and cloud server infrastructures, harden environments, and deliver proactive administration across multiple clients.

The role collaborates with service desk, engineering, and security teams while maintaining high compliance and reliability in a fast-paced environment that uses EOS. Remote US-based position.

Qualifications

• 3–7 years of Windows Server administration in production environments.
• 2+ years administering Microsoft 365 environments (Commercial and/or GCC/GCC High).
• 3+ years supporting VMware/Hyper‑V virtualization.
• Strong PowerShell / automation skills for task simplification.
• Experience with server migrations, tenant hardening, identity sync/SSO deployment.

Responsibilities

• Own reliability, security, and performance of client Windows Server and AD/hybrid identity environments.
• Administer Microsoft 365 and enforce tenant security controls (MFA, CA, baselines).
• Manage backup, disaster recovery, and business continuity readiness (Datto, DR testing).
• Lead high-severity incident escalation and post‑incident remediation documentation.
• Enforce change-management standards with backouts and audit trails.
• Collaborate with Service Desk, TAC, and Security for consistent service delivery.

Skills

Windows Server administration

PowerShell automation

Incident management

Documentation

Education

Microsoft certifications: Windows Server Hybrid Administration

Microsoft 365 Administration

Azure Administration

Security+ or equivalent

Tools

VMware

Hyper-V

Active Directory

Microsoft 365 (Commercial / GCC/GCC High)

IT Glue

Datto backup

Job description

Systems Administrator

Department: Technical Operations (TechOps)
Type: Full-Time (US-Based)
Location: Remote
Pay: $55,000-$65,000 annually
Travel: <10%

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 A detail-driven, security-focused Systems Administrator to safeguard mission-critical client systems and ensure bulletproof backup integrity.
This role supports our Technical Operations team by managing and hardening on-premises and cloud server infrastructures, ensuring robust backup and disaster recovery, and delivering proactive system administration across multiple clients. You will work closely with service desk, engineering, and security teams while maintaining high compliance standards and delivering exceptional reliability in a fast-paced, mission-driven environment that runs on the Entrepreneurial Operating System (EOS).

What You’ll 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 (MFA, Conditional Access, secure baselines)
• 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 (Datto, DR testing, restore validation)
• Serve as the escalation owner for high‑severity (P1/P2) incidents—drive triage, troubleshooting, stakeholder communication, and rapid MTTR
• Produce clear incident documentation and post‑incident remediation plans (RCA, corrective actions, prevention strategy)
• 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
• Lead 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
• Knowledge in EOS System is a plus

What You’ll Bring

• Relevant Microsoft certifications in Windows Server Hybrid Administration, Microsoft 365 Administration, and Azure Administration, with baseline security knowledge (e.g., SC-900, Security+, or equivalent)
• 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 (hardening, patching, identity services, and performance management)
• 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), deliver clear technical documentation, and drive root cause remediation
• Value‑add certifications such as VMware VCP, Veeam, Datto, or similar infrastructure/backup credentials (preferred)
• 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)

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.