Senior Systems Administrator

MicroSourcing International; Pasig; On-site; PHP 900,000 - 1,500,000; Full time

Benefits offered by this job

Healthcare coverage from day one

Paid time-off with cash conversion

Group life insurance and performance-

Job summary

MicroSourcing in Ortigas, Pasig, is seeking a Senior System Administrator to lead technical operations across Microsoft 365, Azure, Windows Server, and related cloud environments.

You will manage access, backups, and security controls; oversee network infrastructure; drive upgrades and cloud migrations; mentor junior IT staff; and coordinate vendor support, with three days on-site per week aligned to Australian business hours.

Qualifications

• Minimum 7 years of enterprise IT experience.
• Strong Microsoft 365 and Azure administration.
• Windows Server administration experience.
• Proven enterprise networking experience (firewalls, routing, switching).
• Hands-on experience with AWS, Google Cloud, or equivalent hybrid cloud.
• Excellent communication and ability to explain technical topics.

Responsibilities

• Provide senior-level technical support and escalation for IT issues.
• Administer Microsoft 365, Azure, Windows Server and other cloud environments.
• Manage access, devices, onboarding/offboarding, patching, backups, and monitoring.
• Maintain enterprise network infrastructure (firewalls, routers, switches, wireless).
• Lead upgrades, cloud migrations, and infrastructure improvements.
• Implement IT security controls including MFA and VPN.
• Support ISO 27001 and ACSC Essential Eight compliance.
• Coordinate with vendors for IT support and licensing.
• Mentor junior IT staff and maintain documentation.
• Provide after-hours support when required.

Skills

Microsoft 365 & Azure

Windows Server

Enterprise networking

AWS / Google Cloud (hybrid)

Security tooling & best practices

Communication

Tools

SharePoint

OneDrive

Teams

Exchange

Intune

Job description

Discover your 100% YOU with MicroSourcing!

Position: Senior System Administrator

Location: Ortigas, Pasig

Work setup & shift: Onsite | Dayshift

Why join MicroSourcing?

You'll Have

• Competitive Rewards: Enjoy above-market compensation, healthcare coverage on day one, plus one or more dependents, paid time-off with cash conversion, group life insurance, and performance bonuses


• A Collaborative Spirit: Contribute to a positive and engaging work environment by participating in company-sponsored events and activities.


• Work-Life Harmony: Enjoy the balance between work and life that suits you with flexible work arrangements.


• Career Growth: Take advantage of opportunities for continuous learning and career advancement.


• Inclusive Teamwork: Be part of a team that celebrates diversity and fosters an inclusive culture.

Your Role

As a Senior System Administrator, you will:

• Provide senior-level technical support and act as the escalation point for complex IT issues across the organisation.


• Administer and maintain Microsoft 365, Azure, Windows Server, and other cloud environments.


• Manage user access, devices, system configurations, onboarding/offboarding, patching, backups, and infrastructure monitoring.


• Maintain and troubleshoot enterprise network infrastructure, including firewalls, routers, switches, and wireless devices.


• Lead system upgrades, cloud migrations, infrastructure improvements, and modernisation projects.


• Implement and maintain IT security controls, including MFA, VPN, endpoint security, vulnerability management, and security monitoring.


• Support ISO 27001 compliance and the implementation of the ACSC Essential Eight security framework.


• Manage backup restoration, business continuity, disaster recovery, and recovery testing procedures.


• Coordinate with vendors for IT support, warranties, equipment replacement, software licensing, and infrastructure requirements.


• Provide technical leadership, mentoring, and guidance to junior IT staff while overseeing helpdesk and systems administration activities.


• Maintain system documentation, knowledge base articles, asset registers, and standard operating procedures.


• Collaborate with IT applications and data teams on web applications, AI tools, dashboards, and other technology solutions.


• Provide after-hours and on-demand support when required for system outages, security incidents, upgrades, and critical infrastructure activities.

What You Need

Non-negotiables

• Minimum 7 years of relevant experience, with demonstrated 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.


• Demonstrated experience with Windows Server administration.


• Proven enterprise networking experience, including firewalls, routing, switching, and wireless configuration.


• Hands‑on experience administering AWS, Google Cloud, or another major cloud provider in a hybrid cloud environment.


• Strong analytical, problem-solving, and communication skills, with the 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, with after-hours support as required.

Preferred Skills/expertise

• Microsoft certifications in Azure, Microsoft 365, or related technologies.


• Experience with SharePoint, OneDrive, Teams, Exchange, and Intune.


• Experience with IT security tools, vulnerability management, and security best practices.


• Experience supporting ISO 27001 and ACSC Essential Eight compliance requirements.


• Experience deploying and maintaining enterprise software and cloud technologies.


• Experience with backup, disaster recovery, business continuity, and restoration testing.


• Experience supporting, training, and mentoring junior IT team members.


• Experience working with professional services firms or Australian-based organisations.

About MicroSourcing

With over 9,000 professionals across 13 delivery centers, MicroSourcing is the pioneer and largest offshore provider of managed services in the Philippines.

Our commitment to 100% YOU

MicroSourcing firmly believes that our company's strength lies in our people's diversity and talent. We are proud to foster an inclusive culture that embraces individuals of all races, genders, ethnicities, abilities, and backgrounds. We provide space for everyone, embracing different perspectives, and making room for opportunities for each individual to thrive.

At MicroSourcing, equality is not merely a slogan – it's our commitment. Our way of life. Here, we don't just accept your unique authentic self - we celebrate it, valuing every individual's contribution to our collective success and growth. Join us in celebrating YOU and your 100%!

For more information, visit https://www.microsourcing.com/

Terms & conditions apply