Senior System Administrator

at  Total Power Limited

SUMMARY

The Senior System Administrator – Security & Infrastructure, is responsible for managing and securing our IT infrastructure. This role focuses on maintaining high availability, security, and performance across cloud and on-premises environments, ensuring compliance with cybersecurity best practices.

WHAT YOU NEED (REQUIREMENTS)

• 5+ years of experience in system administration and IT security.
• Strong experience with:
• Azure, Windows Server, and Active Directory.
• Endpoint management with Intune, RMM and SentinelOne.

• Network administration of Cisco Meraki solutions.

• Duo MFA and email security solutions.

• Excellent troubleshooting and analytical skills, with the ability to diagnose and resolve complex technical issues.

• Proven experience mentoring or supervising junior team members.
• Certifications such as MCSE, Azure AZ-104, CompTIA Security+, ITIL
• Strong communication and collaboration skills to work across teams and stakeholders effectively.
• Outstanding organizational and time management skills.

• Manage and maintain IT infrastructure, including Windows Server, Azure, and Intune.
• Lead and participate in IT system migrations, including email, SharePoint, and Active Directory consolidation efforts.
• Configure and monitor Meraki networking solutions.
• Administer Microsoft 365 services, including Exchange, SharePoint, and Teams, ensuring availability and security.
• Oversee SentinelOne Endpoint Protection, deployment and security policy enforcement across all endpoints.
• Implement and maintain Zero-Trust security principles and compliance policies.
• Manage identity and access security through Duo MFA and Azure AD.
• Ensure compliance with IT security policies across all endpoints and cloud environments.
• Manage system backups (Veeam) and Cloud Backups (AvePoint), ensuring disaster recovery readiness and periodic testing.
• Provide high-level support for escalated technical issues and collaborate with IT teams to improve service delivery.
• Mentor and assist junior IT support technicians, fostering a culture of knowledge sharing and continuous improvement.
• Work with security tools such as Mimecast and KnowBe4 to improve email security and minimize phishing risks.
• Develop and maintain IT documentation, including SOPs, infrastructure diagrams, and end-user guides.
• Lead efforts in improving IT asset management, ensuring accurate tracking of hardware and software inventory.