Enter a job title or keyword

L3 Systems Engineer

ScalableOS


Job Location:

Makati City - Philippines

Monthly Salary: Not provided by the employer
Experience Required: 5years
Posted: 8 October 2026 (6 hours ago)
Application Deadline: 5 January 2027
Vacancies: 1 Vacancy

Job Summary

SUMMARY

We are looking for an experienced Level 3 Systems Engineer who can solve complex technical problems design and implement solutions lead projects mentor other technicians and serve as a senior technical escalation resource.

This position combines advanced Tier 3 technical support with systems engineering cloud infrastructure networking cybersecurity and project responsibilities.

When Tier 1 and Tier 2 technicians encounter difficult server Microsoft cloud networking cybersecurity or infrastructure problems you are one of the people they escalate to.

You will also design implement migrate secure and improve client technology environments.

You should be comfortable independently investigating complex technical problems developing a plan implementing a solution and communicating with the client throughout the process.

Candidates whose experience is primarily desktop support helpdesk or Microsoft 365 administration without meaningful hands-on Windows Server experience will not meet the technical requirements of this position.

JOB RESPONSIBILITIES
  • Windows Server and Active Directory
  • Strong hands-on Microsoft Windows Server experience is required.
  • You should be comfortable administering engineering and troubleshooting:
    • Windows Serverand newer environments
    • Active Directory Domain Services Domain Controllers and Active Directory replication
    • Group Policy
    • DNS and DHCP
    • Authentication and domain trust issues
    • File servers NTFS permissions and shared folders
    • Windows services Event Viewer storage networking and performance
    • Hyper-V and VMware environments
    • Windows Server migrations upgrades replacements and decommissioning
    • Hybrid Active Directory and Microsoft cloud environments
  • You must be able to walk into an unfamiliar Windows Server environment determine how it is configured identify problems and independently develop a solution.
  • Microsoft 365 Azure and Cloud Engineering
  • Modern client environments increasingly combine traditional infrastructure with cloud-hosted services.
  • You must be comfortable supporting both including traditional Active Directory hybrid Active Directory and Entra ID and cloud-only environments.
  • You will:
  • Administer and troubleshoot Microsoft 365 environments including Exchange Online SharePoint Online Microsoft Teams and Microsoft Intune
  • Administer Microsoft Entra ID including identity roles authentication MFA and Conditional Access
  • Support and troubleshoot Microsoft Azure and cloud-hosted infrastructure including virtual machines storage networking identity connectivity servers applications and services
  • Lead or assist with client transitions and migrations to Microsoft 365 Azure Exchange Online SharePoint Entra ID SaaS and hybrid-cloud architectures
  • Apply modern identity-security and Zero Trust principles to cloud environments
  • Networking and Cybersecurity
  • Making something work is only part of the job. It also needs to be secure.
  • You will:
  • Configure and troubleshoot LAN and WAN VLANs routing switching wireless VPNs DNS and DHCP
  • Configure and support next-generation firewalls switches wireless access points and secure remote access
  • Work with Fortinet technologies including FortiGate FortiSwitch FortiAP FortiManager FortiClient and EMS
  • Configure administer and troubleshoot iBoss SaaS cloud security solutions
  • Support endpoint security EDR MFA email security SOC monitoring vulnerability management and secure web technologies
  • Assist with cybersecurity remediation system hardening and incident response
  • Apply cybersecurity best practices when designing and implementing technical solutions
  • Systems Engineering and Advanced Escalations
  • Own complex technical escalations from diagnosis through resolution
  • Perform root-cause analysis and design long-term solutions rather than relying on temporary fixes
  • Analyze logs monitoring data packet captures and other diagnostic information to resolve complex issues
  • Work directly with vendors on advanced technical issues
  • Identify opportunities to improve client technology environments
  • Clearly communicate technical findings business impact and recommended solutions
  • Projects Backup and Disaster Recovery
  • You will lead or participate in projects involving:
    • Windows Server replacements and migrations
    • Microsoft 365 Azure Entra ID SharePoint file on-premises-to-cloud and hybrid-cloud migrations
    • Firewall network and wireless projects
    • Cybersecurity implementations
    • Backup and disaster-recovery solutions
    • Infrastructure modernization
  • You will develop implementation plans identify risks create rollback plans when appropriate coordinate with clients and vendors test changes and accurately document completed work. You will also support backup and disaster-recovery environments troubleshoot backup failures perform restores and recovery testing and assist during major recovery events.
  • Mentoring and Technical Leadership
  • A Level 3 Systems Engineer should make the entire technical team stronger
  • You will:
  • Mentor Tier 1 and Tier 2 technicians and review their technical escalations
  • Teach troubleshooting skills rather than simply providing answers
  • Share technical knowledge with the team and improve technical documentation
  • Help establish and improve technical standards and best practices
  • Lead through your actions regardless of title


Requirements
  • Minimum of 3 years of MSP experience
  • Experience at a Senior Tier 2 Senior NOC Tier 3 Systems Administrator Systems Engineer or comparable technical level
  • Significant hands-on Windows Server administration and troubleshooting experience including strong Group Policy DNS DHCP authentication permissions and Active Directory troubleshooting skills
  • Experience performing Windows Server migrations upgrades and replacements
  • Experience supporting Hyper-V and/or VMware
  • Strong Microsoft 365 and Exchange Online knowledge
  • Strong Microsoft Entra ID administration and troubleshooting skills including MFA Conditional Access and modern identity-security technologies
  • Working knowledge of Microsoft Azure and cloud-hosted infrastructure including Azure Virtual Machines networking storage identity and cloud-security concepts
  • Experience supporting hybrid Active Directory and Entra ID environments
  • Strong networking knowledge including TCP/IP VLANs routing switching VPNs and wireless
  • Experience configuring and troubleshooting next-generation firewalls
  • Familiarity with how MSPs use RMM PSA documentation and remote-support platforms
  • Strong root-cause troubleshooting and problem-solving skills
  • Ability to independently research and learn unfamiliar technologies Strong written and verbal communication skills
Technology Youll Work With

Our environment includes technologies such as Windows Server Active Directory Microsoft 365 Microsoft Entra ID Azure Exchange Online SharePoint Intune Hyper-V VMware Fortinet iBoss SaaS Datto RMM Autotask PSA Kaseya technologies Datto BCDR Microsoft Defender RocketCyber SOC EDR vulnerability management email security and VoIP and UCaaS platforms.





Required Skills:

MSP experience. Windows Server Active Directory Microsoft 365 Microsoft Entra ID Azure Exchange Online SharePoint Intune Hyper-V VMware Fortinet iBoss SaaS Datto RMM Autotask PSA Kaseya technologies Datto BCDR Microsoft Defender RocketCyber SOC EDR vulnerability management email security and VoIP and UCaaS platforms.