Arnold M. Arellano

System administrator and IT support professional with 15+ years of experience supporting international, remote, multi-site, and enterprise environments. Hands-on background in Windows and Linux servers, workstation and application troubleshooting, network administration, virtualization environments, Microsoft cloud services, service desk operations, cybersecurity, and 24/7 support. Experienced as a technical escalation point and IT leader, with a strong focus on customer service, clear communication, reliable incident resolution, and business continuity.

Senior Technical Support Specialist - Sky Black Box - Remote, Sydney, Australia

(2025-08)

• Provide remote technical support for enterprise software, integrations, data feeds, and client-facing business systems.
• Manage service desk tickets, prioritize critical incidents, and troubleshoot application and access issues affecting live operations.
• Administer IAM and MFA controls and coordinate security patches with DevSecOps and software engineering teams.

Information Technology Manager - Pochet GmbH - Germany / Remote

(2023-09 - 2026-08)

• Managed multi-site IT operations and support for POS, warehouse, inventory, and online business applications.
• Maintained network availability and failover capability and resolved infrastructure and application issues across branches.
• Led technicians and vendors, coordinated service contracts, and supported secure and reliable daily operations.

Information Technology Manager - Amsteel - Jeddah, Saudi Arabia

(2018-08 - 2023-06)

• Led IT infrastructure, technical support, system upgrades, migrations, security improvements, and staff development.
• Monitored system performance and logs, investigated bottlenecks, and drove incidents and improvement work to completion.
• Performed security audits and risk assessments and coordinated projects with internal stakeholders and external providers.

Senior System Administrator - AkrantY Labs FZ LLC - Dubai, UAE

(2017-11 - 2018-07)

• Configured and supported Windows Server, virtualization, client/server, storage, firewall, routing, and network environments.
• Supported international clients, resolved infrastructure and application issues, and performed maintenance and recovery tasks.
• Prepared performance reports, tested disaster recovery plans, and trained users to reduce repeat support issues.

Data Center Operations Engineer Lead - Microsoft Singapore / Atos - Singapore

(2013-06 - 2017-04)

• Led 24/7 operational support, monitoring, and troubleshooting for enterprise Windows and Linux servers and network devices.
• Installed and upgraded hardware and operating systems, managed incidents through ticketing tools, and acted as an escalation point.
• Maintained operating procedures, access controls, and technical documentation supporting availability and compliance.

Systems Engineer - ServTouch-Wywy - Singapore

(2011-02 - 2012-10)

• Delivered onsite and remote support across client environments, including workstation, server, network, application, and printer issues.
• Installed and maintained Windows and Linux servers, network equipment, security systems, and SQL-based solutions.
• Monitored performance, completed routine maintenance, and worked with clients and technical teams to restore service efficiently.

Bachelor of Science - Computer Engineering - University of Saint Louis, Tuguegarao City, Philippines (2000 - 2005)

Instrumentation Technology - MFI Technological Institute, Pasig City, Philippines (2007)