Open to opportunities

David Sierra

@davidsierra

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Executive assistant and automation specialist improving workflows and reducing manual work.

Colombia

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What I'm looking for

I’m looking to support high-performance teams by streamlining operations, managing complex calendars and inboxes, and automating repetitive work with Zapier/Make—so fewer tasks fall through and everyone can focus on results.

I’m an Executive Assistant & Automation Specialist with a strong track record in customer operations and workflow optimization. I manage high-volume communications, keep critical processes on track, and improve how teams work through reliable operational support.

In my customer service role, I improved first-contact resolution by 12%, reduced repeat inquiries by 18%, and increased CSAT by 20% through proactive case analysis and Zendesk-based escalations. Across assistant and freelance projects, I built and deployed automated workflows in Zapier and Make, cutting manual tasks by 38%, while strengthening execution with Google Workspace, Airtable/Google Sheets, and Notion systems.

Experience

Work history, roles, and key accomplishments

Customer Service Representative

Foundever

Dec 2024 - Mar 2026 (1 year 3 months)

Managed high-volume English customer interactions, improving first-contact resolution by 12% and reducing repeat inquiries by 18%. Handled critical escalations in Zendesk, increasing CSAT by 20%, while maintaining SLA compliance across 8,000+ cases annually.

Zendesk Customer Service SLA Management Escalations CSAT First Contact Resolutions Proactive Case Analysis

Executive Assistant & Automation

Freelance

Provided executive support (calendar management, inbox organization, task coordination) and built automation workflows in Zapier and Make to reduce manual tasks by 38%. Designed operational systems and CRM tracking using Airtable/Google Sheets and Notion, improving overall team efficiency by 22%.