Open to projectsTaking on freelance and side projectsHappy Halloween

John Anthony Otayco

IT Infrastructure & Security

  • Microsoft 365
  • Infrastructure
  • Cybersecurity
  • Automation & Development
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About

Keeping businesses running, and keeping them secure

IT Support Team Lead with 8+ years of experience in Managed Service Provider (MSP) and enterprise environments. Currently part of the security team, actively involved in cybersecurity monitoring, incident response, vulnerability remediation, and secure infrastructure operations. Strong hands-on background in Microsoft 365, Active Directory, endpoint security, and patch management, with proven leadership in guiding engineers, handling escalations, and supporting security-driven initiatives.

Available for

Freelance and side projects

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Expertise

What I work with

Tools and practices from day-to-day MSP and security work, with my level in each.

Security Operations

  • Incident ResponseExpert
  • Threat & Vulnerability ManagementProficient
  • Security Policy EnforcementProficient
  • EDR/XDR (Huntress, Bitdefender)Proficient
  • Email Security (Proofpoint)Expert

Identity & Cloud

  • Microsoft 365 AdministrationExpert
  • Microsoft Entra ID (Azure AD)Expert
  • Active DirectoryExpert

Infrastructure

  • Windows ServerProficient
  • Group PolicyProficient
  • Patch ManagementExpert

Service Desk

  • ConnectWise Manage (Ticketing)Proficient
  • ConnectWise Automate (RMM)Proficient
  • Client Support & EscalationsExpert
  • Technical DocumentationProficient

Automation

  • PowerShellProficient
  • Power AutomateProficient

Leadership

  • Team Leadership & MentoringProficient
  • IT Operations ManagementProficient

Experience

Where I've worked

Australian Managed Service Provider (MSP)

Cebu, Philippines

2018 – Present

  1. IT Support Team Lead

    CurrentOct 2025 – Present

    Lead and mentor IT support engineers in an MSP environment

    Oversee daily operations, escalations, and incident response, including security-related incidents

    Participate as part of the security team supporting threat monitoring and vulnerability remediation

    Coordinate infrastructure projects, system upgrades, and security implementations

    Collaborate with cybersecurity teams on EDR/XDR deployment and policy enforcement

    Ensure patch management, system hardening, and compliance

  2. IT Support Engineer – Subject Matter Expert (Cybersecurity)

    Mar 2025 – Oct 2025

    Senior escalation point for security monitoring, threat analysis, and incident response

    Managed Proofpoint, Huntress, Bitdefender, and endpoint security solutions

    Assisted with identity and access management and security policy implementation

    Mentored junior engineers on secure troubleshooting practices

  3. IT Support Engineer (On-site Assignments)

    Sep 2023 – Apr 2025

    Perth, Australia

    Delivered onsite infrastructure and end-user support in business-critical environments

    Assignments: Sep 2023 – Dec 2023 and Jan 2025 – Apr 2025

  4. IT Support Engineer

    Apr 2018 – Mar 2025

    Administered Microsoft 365, Active Directory, Windows Server, and networking services

    Managed patching, Group Policy, system configuration, and technical documentation

    Responded to security alerts and assisted in risk remediation

    Automated routine tasks using PowerShell and Power Automate

Atos logo

Atos

Cebu, Philippines

2017 – 2018

  1. Technical Helpdesk Analyst

    Jul 2017 – Apr 2018

    AD password resets, Exchange management, and Windows support

    Delivered customer-focused Tier 1–2 technical service

Convergys logo

Convergys

Cebu, Philippines

2016 – 2017

  1. Technical Support Representative

    Jan 2016 – Jun 2017

    Assisted U.S. clients with broadband and home network support

    Handled billing concerns and router/modem troubleshooting

Credentials

Certifications and education

  • SC-900: Microsoft Security, Compliance & Identity Fundamentals

    Microsoft

  • AZ-900: Microsoft Azure Fundamentals

    Microsoft

  • Certified Duo Help Desk Administrator

    Cisco Duo

  • Google IT Support Specialization

    Google

  • PL-900: Microsoft Power Platform Fundamentals

    Microsoft

Education

Bachelor of Science in Information Technology

AMA University · Zamboanga City, Philippines

Projects

Things I've built

Featuredcodex.otatats.top

The Inner Mirror

A self-reflection web app inspired by Carl Jung's archetypes: explore twelve archetypes to understand your persona, shadow, and inner tensions.

Web App · Supabase · Privacy by design · UX

Visit site ↗Read more

Contact

Let's talk

Need help with security, infrastructure, IT operations or a new website? Send a message and I’ll get back to you.