Senior Systems Administrator - Cloud, Security & Onsite

MicroSourcing International; Metro Manila; On-site; PHP 1,000,000 - 1,800,000; Full time

Benefits offered by this job

Competitive rewards

Healthcare coverage

Paid time off cash conversion

Group life insurance

Performance bonuses

Collaborative culture

Flexible work arrangements

Career growth

Job summary

MicroSourcing International seeks a Senior System Administrator to provide senior-level IT support and lead cloud, security, and network operations. The role covers Microsoft 365, Azure, Windows Server, and hybrid cloud environments, with onsite work in Ortigas three days weekly aligned to Australian business hours.

Ideal candidates bring 7+ years of enterprise IT experience, strong cloud and networking skills, and the ability to mentor junior staff while coordinating with vendors and internal

Qualifications

• Minimum 7 years of relevant experience, with senior or lead responsibility in an enterprise environment.
• Strong experience administering Microsoft 365 and Azure, with working knowledge of AWS or another major cloud provider.
• Proven Windows Server administration skills.
• Extensive enterprise networking experience including firewalls, routing, switching and wireless configuration.
• Experience with AWS, Google Cloud or other major cloud providers in a hybrid setup.
• Excellent communication and ability to explain technical matters to non-technical stakeholders.
• Willingness to work onsite in Ortigas, Pasig, three days per week aligned with Australian business hours.

Responsibilities

• Provide senior-level technical support and act as escalation point for complex IT issues.
• Administer and maintain Microsoft 365, Azure, Windows Server, and cloud environments.
• Manage user access, devices, configurations, onboarding/offboarding, patching, backups and monitoring.
• Maintain and troubleshoot enterprise network infrastructure, including firewalls, routers, switches and wireless devices.
• Lead system upgrades, cloud migrations, infrastructure improvements and modernization projects.
• Implement and maintain IT security controls (MFA, VPN, endpoint security, vulnerability management, monitoring).
• Support ISO 27001 compliance and ACSC Essential Eight security framework.
• Manage backup restoration, BCP/DR and recovery testing.
• Coordinate with vendors for IT support, warranties, licensing and infrastructure needs.
• Provide technical leadership, mentoring and guidance to junior IT staff; oversee helpdesk and systems administration.
• Maintain system documentation and asset registers; develop SOPs.
• Collaborate with IT applications and data teams on web apps, AI tools, dashboards and other tech solutions.
• Provide after-hours support for outages, security incidents, upgrades and critical infrastructure.

Skills

Senior system administration

Cloud management

IT security

Networking

Team leadership

Tools

Azure

Microsoft 365

Windows Server

AWS

SharePoint/OneDrive/Teams/Exchange/Intune

Job description

MicroSourcing International seeks a Senior System Administrator to provide senior-level IT support and lead cloud, security, and network operations. The role covers Microsoft 365, Azure, Windows Server, and hybrid cloud environments, with onsite work in Ortigas three days weekly aligned to Australian business hours.

Ideal candidates bring 7+ years of enterprise IT experience, strong cloud and networking skills, and the ability to mentor junior staff while coordinating with vendors and internal