Lead – System Administrator

Overview

Growexx is seeking a Lead – System Administrator to provide advanced technical assistance to our L2 support team and end users across Linux, Windows, and macOS environments. The ideal candidate will have strong Linux administration expertise, hands-on exposure to open-source tools such as Wazuh and Passbolt, and a solid understanding of both on‑premises Active Directory (AD) and cloud-based identity services such as Azure AD.

Key Responsibilities

Advanced Technical Support

• Provide Tier‑3 support for escalations from the L2 support team.
• Troubleshoot and resolve complex issues across Linux, Windows, and macOS platforms.
• Conduct detailed root‑cause analysis and implement permanent fixes.
• Assist end users with advanced-level technical issues.
  
  

• Administer, configure, and troubleshoot Linux servers and workstations (Ubuntu, CentOS, RHEL, etc.).
• Perform system security hardening, patch management, and performance optimization.
• Utilize shell scripting (Bash/Python) for automation and process improvement.
  
  

• Deploy, manage, and troubleshoot open-source tools such as:
• Wazuh SIEM
• Passbolt Password Manager
• Network monitoring tool – PRTG,
• Asset management tool- GLPi, Snipe-it, Manage engine
• Other infrastructure, monitoring, or security-related applications.
• Evaluate and recommend open-source solutions based on organizational needs.
  
  

• Manage and troubleshoot Active Directory environments, including Group Policies and user lifecycle management.
• Support Azure AD / Cloud AD deployments and integrations (Jumpcloud, MS Intune, Scalefusion).
• Work with hybrid identity technologies (Azure AD Connect, SSO, Conditional Access).
  
  

Education and Experience

• Bachelor’s degree Engineering, IT, or a related field.
• 7–10 years of experience in system administration or IT support roles.
• Strong hands-on expertise in Linux administration.
• Team management experience in overseeing support teams, ensuring efficient issue resolution and service delivery.
• Proficiency in Windows and macOS support.
• Solid understanding of Active Directory, Group Policies, IAM concepts, and Azure AD.
• Experience with open-source applications such as Wazuh, Passbolt, Grafana, Zabbix, etc.
• O365 basic understanding/management
• Working knowledge of scripting languages like Bash or Python.
• Familiarity with ITIL-based incident, problem, and change management.
• Strong analytical, troubleshooting, and communication skills.
• Preferred -Experience with public cloud environments (AWS/Azure/GCP).
• Preferred -Exposure to DevOps tools (Docker, Git, CI/CD pipelines).
• Preferred -Basic understanding of cybersecurity and security best practices.
• Preferred -Relevant certifications such as Linux+, RHCSA, Azure Administrator, or equivalent.
  
  

Analytical and Personal Skills

• Must have good logical reasoning and analytical skills.
• Good communication skills in English – both written and verbal.
• Demonstrate Ownership and Accountability of their work.
• Interest in new technologies and the latest innovation trends.
• Multi-tasking capabilities and team management
• Be able to manage multiple stakeholders.
• Be able to resolve conflicts amicably.
• Forward-thinking.