Sr. System Administrator

LCC Group of Companies; Tabaco; On-site; PHP 600,000 - 1,200,000; Full time

Job summary

LCC Group of Companies is seeking a Senior Systems Administrator to design, implement, and maintain the IT infrastructure to ensure reliability, security, and performance. The role leads troubleshooting, upgrades, and DR planning while mentoring junior staff.

The candidate will manage servers (physical and virtual), administer Windows and Linux environments, and collaborate with teams to optimize infrastructure and document configurations and policies.

Qualifications

• Bachelor’s degree in Information Technology, Computer Science, or related field is required.
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Responsibilities

• Manage, maintain, and monitor servers (physical and virtual), operating systems, and core IT infrastructure.
• Administer Windows and/or Linux environments, including Active Directory, DNS, DHCP, and Group Policy.
• Oversee system security, access controls, patch management, and backup/recovery processes.
• Design and implement infrastructure improvements to enhance performance, scalability, and reliability.
• Troubleshoot and resolve complex system, network, and application issues.
• Collaborate with IT teams, vendors, and stakeholders on infrastructure projects.
• Lead system upgrades, migrations, and disaster recovery planning.
• Document system configurations, procedures, and policies.
• Provide technical guidance and mentoring to junior system administrators.
• Ensure compliance with internal policies and industry best practices.

Skills

Windows/Linux experience

Virtualization

Cloud platforms

Networking fundamentals

Scripting/Automation

Documentation skills

Education

Bachelor’s degree in IT, CS or related field

Tools

VMware

Hyper-V

PowerShell

Bash

Job description

The Senior Systems Administrator is responsible for the design, implementation, maintenance, and optimization of the organization’s IT infrastructure. This role ensures system reliability, security, and performance while providing leadership in troubleshooting complex issues and supporting business operations.

Key Responsibilities

• Manage, maintain, and monitor servers (physical and virtual), operating systems, and core IT infrastructure
• Administer Windows and/or Linux environments, including Active Directory, DNS, DHCP, and Group Policy
• Oversee system security, access controls, patch management, and backup/recovery processes
• Design and implement infrastructure improvements to enhance performance, scalability, and reliability
• Troubleshoot and resolve complex system, network, and application issues
• Collaborate with IT teams, vendors, and stakeholders on infrastructure projects
• Lead system upgrades, migrations, and disaster recovery planning
• Document system configurations, procedures, and policies
• Provide technical guidance and mentoring to junior system administrators
• Ensure compliance with internal policies and industry best practices

Qualifications

• Bachelor’s degree in Information Technology, Computer Science, or a related field (or equivalent experience)
• 3+ years of experience in systems administration or a related role
• Strong experience with Windows Server and/or Linux systems
• Hands-on experience with virtualization technologies (e.g., VMware, Hyper‑V)
• Knowledge of cloud platforms (AWS, Azure, or GCP) is an advantage
• Solid understanding of networking concepts and security principles
• Experience with scripting and automation (PowerShell, Bash, etc.)
• Strong problem-solving, communication, and documentation skills