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Richan SumalinabRS
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Richan Sumalinab

@richansumalinab

I resolve enterprise IT issues across endpoints, identity, and Microsoft 365.

Philippines
Message

I've supported global enterprise users at Dexcom since 2020, progressing from Desktop Support Specialist 2 to IT Support Specialist 4. I provide Tier 2/3 support across Windows, Microsoft 365, VPN, enterprise applications, endpoint devices, and remote access.

I administer Active Directory user lifecycles, access, and security groups for hundreds of users, while managing patching, antivirus, and encryption controls with 100% compliance across SOX, HIPAA, and PCI requirements. I handle high-volume ITSM queues, meet SLA targets, and partner with global IT teams on escalations and critical incidents.

Previously at TTEC, I delivered Tier 1 and Tier 2 support for call-center environments of 1,000+ users. Earlier, I maintained Asterisk/Vicidial, PBX, Windows Server, ISP connections, and data-center operations at Direct Access.

Experience

Work history, roles, and key accomplishments

Dexcom Philippines logoDP
Current

IT Support Specialist 4

Jan 2024 - Present (2 years 9 months)

• Provide Tier 2/3 support for global users, resolving issues across Windows, O365, VPN, and
enterprise apps
• Administer Active Directory (user lifecycle, access, security groups) supporting hundreds of users
• Manage endpoint security (patching, antivirus, encryption) ensuring 100% compliance with SOX,
HIPAA, PCI
• Troubleshoot VPN, network, and remote access issues, reducing user downtime signi

Dexcom Philippines logoDP

Desktop Support Specialist 3

Jan 2022 - Dec 2023 (1 year 11 months)

• Provide Tier 1 and Tier 2 technical support for end users via ticketing systems, chat, and remote tools
• Troubleshoot and resolve issues related to Windows OS, Microsoft 365, VPN connectivity, and enterprise applications
• Perform Active Directory administration, including user account creation, password resets, and access management
• Support endpoint devices including laptops, desktops, m

Dexcom Philippines logoDP

Desktop Support Specialist 2

Nov 2020 - Dec 2021 (1 year 1 month)

• Provide Tier 1 and Tier 2 technical support for end users via ticketing systems, chat, and remote tools
• Troubleshoot and resolve issues related to Windows OS, Microsoft 365, VPN connectivity, and enterprise applications
• Perform Active Directory administration, including user account creation, password resets, and access management
• Support endpoint devices including laptops, desktops, m

TTEC logoTT

Senior Desktop Support

Jan 2017 - Nov 2020 (3 years 10 months)

• Delivered Tier 2 support in a high-volume call center environment (1000+ users)
• Managed Active Directory accounts and access control, ensuring secure operations
• Troubleshot desktop, network, and application issues, minimizing operational disruptions
• Supported Windows OS, internal tools, and enterprise applications
• Managed tickets, escalations, and service requests while maintaining SLA p

TTEC logoTT

Desktop Support 3

Jan 2016 - Dec 2016 (11 months)

• Delivered Tier 1 and Tier 2 support in a high-volume environment (1000+ users)
• Troubleshot desktop, network, and application issues, ensuring minimal downtime
• Managed Active Directory user accounts and permissions
• Assisted users with password resets, system access, and basic technical issues
• Supported Windows OS, internal tools, and enterprise applications
• Handled ticket queues,

TTEC logoTT

Desktop Support 2

Nov 2013 - Dec 2015 (2 years 1 month)

• Delivered Tier 1 support in a high-volume environment (1000+ users)
• Troubleshot desktop, network, and application issues, ensuring minimal downtime
• Managed Active Directory user accounts and permissions
• Assisted users with password resets, system access, and basic technical issues
• Supported Windows OS, internal tools, and enterprise applications
• Handled ticket queues, prioritized

Direct Access logoDA

Administrator

Mar 2010 - Sep 2013 (3 years 6 months)

o Maintained Asterisk/Vicidial servers and configurations.
o Monitored ISP connections and data center operations.
o Performed system monitoring, maintenance, and patching.
o Documented system configurations and procedures.
o Coordinated with IT and operations for uptime improvements
o Monitored and configured servers (PBX, Vicidial, Windows Server).
o Provided support for call center agent dialer

Education

Degrees, certifications, and relevant coursework

BU

Bohol Island State University

Bachelor of Science, Computational Science

2004 - 2008

Tech stack

Software and tools used professionally

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