IT admin and support

Senior System Administrator

Key Responsibilities:

• Design, implement, and manage

  on-premises and cloud-based infrastructure

  , ensuring optimal uptime and performance.
• Administer

  Windows Server environments

  , including Active Directory, DNS, DHCP, and Group Policy.
• Configure and maintain

  network infrastructure

  , including LAN/WAN, switches, routers, and

  firewalls (Sophos)

  .
• Manage

  Microsoft Azure

  services, including

  Azure Active Directory

  , Virtual Machines, and security features.
• Oversee

  endpoint security solutions

  such as

  SentinelOne

  ,

  Zscaler

  , and

  Microsoft Defender

  .
• Administer and maintain

  file share servers

  , ensuring appropriate access control and data integrity.
• Deploy and manage

  Microsoft Intune

  for device management, compliance policies, and application deployments.
• Perform regular

  system monitoring

  , backups, patching, and updates for all infrastructure components.
• Troubleshoot complex system and network issues, providing timely resolution.
• Maintain security posture across all systems, ensuring compliance with industry best practices.
• Create and maintain documentation for systems, processes, and configurations.
• Collaborate with cross-functional teams to support business and IT initiatives.

Requirements:

Education & Experience:

• Bachelors degree in Computer Science, Information Technology, or related field (or equivalent experience).
• 5+ years of experience as a System Administrator or in a similar role.

Technical Skills:

• Deep knowledge of

  Windows Server (2016/2019/2022)

  administration.
• Experience managing

  Microsoft Azure

  ,

  Azure Active Directory.

• Strong understanding of

  networking protocols

  ,

  VLANs

  ,

  VPNs

  , and

  firewall policies

  .
• Proficient with

  Sophos Firewall

  configuration and management.
• Hands-on experience with

  endpoint protection platforms

  :

  Sentinel One

  &

  Zscaler

  .
• Experience with

  file server management

  , SMB shares, and permissions.
• Familiarity with backup & disaster recovery planning and tools.

Soft Skills:

• Strong problem-solving and analytical skills.
• Excellent communication and documentation abilities.
• Ability to work independently and in a team environment.
• Proactive attitude towards security, performance, and operational efficiency.