L3 Systems Engineer: Cloud, AD & Cybersecurity Expert

ScalableOS; Makati; On-site; PHP 900,000 - 1,350,000; Full time

Job summary

ScalableOS in Makati, Philippines, is seeking an experienced Level 3 Systems Engineer to solve complex problems, design and implement solutions, lead projects, and mentor technicians as a senior escalation resource.

This role blends Tier 3 technical support with systems engineering, cloud, networking, cybersecurity, and project responsibilities. You will design, implement, migrate, secure, and improve client environments, communicating with clients throughout the process.

Qualifications

• Minimum of 3 years of MSP experience.
• Senior Tier 2 / Tier 3 or equivalent role experience.
• Hands-on Windows Server administration with AD, DNS, DHCP, and GPO.
• Experience with Windows Server migrations, upgrades, and replacements.
• Experience with Hyper-V and/or VMware.
• Strong Microsoft 365 and Exchange Online knowledge.
• Strong Entra ID administration and troubleshooting (MFA, Conditional Access).
• Azure and cloud-hosted infrastructure knowledge.
• Hybrid Active Directory and Entra ID environments.
• Strong networking knowledge: TCP/IP, VLANs, routing, VPNs, wireless.
• Experience with next-gen firewalls and MSP remote-support tools.
• Strong root-cause troubleshooting and problem-solving skills.
• Excellent written and verbal communication.

Responsibilities

• Administer and troubleshoot Windows Server, AD DS, Group Policy, DNS/DHCP.
• Manage Windows Server 2016/2019/2022+ environments and migrations.
• Administer Microsoft 365, Entra ID, and cloud services (Azure, Exchange Online, SharePoint).
• Lead client transitions and migrations to cloud and hybrid architectures.
• Configure and troubleshoot networking, firewalls, VPNs, and security controls.
• Provide Tier 3 escalation support and mentor Tier 1/2 technicians.
• Perform root-cause analysis, document findings, and implement long-term fixes.
• Support disaster recovery, backups, and infrastructure modernization-related projects.

Skills

Windows Server

Active Directory

Group Policy

DNS

DHCP

Networking

Cybersecurity

Hyper-V

VMware

Microsoft 365

Azure

Entra ID

Tools

Fortinet

iBoss SaaS

Datto RMM

Autotask PSA

Kaseya

Datto BCDR

Job description

ScalableOS in Makati, Philippines, is seeking an experienced Level 3 Systems Engineer to solve complex problems, design and implement solutions, lead projects, and mentor technicians as a senior escalation resource.

This role blends Tier 3 technical support with systems engineering, cloud, networking, cybersecurity, and project responsibilities. You will design, implement, migrate, secure, and improve client environments, communicating with clients throughout the process.