Luis Carlos H.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I led a 2,000-user Cisco-to-Zoom migration across 7 countries: users, licensing, Zoom Phone, Zoom Rooms, Poly devices, and the legacy Cisco gear that still had to work alongside it. If you need Zoom set up, cleaned up or run properly, this is what I do every day. I'm a Senior Unified Communications Engineer with 10+ years in enterprise voice (Cisco CUCM, voice gateways, VoIP/SIP, Zoom, Microsoft Teams, CXone / RingCentral, Genesys). I'm the sole Zoom administrator for a global telecom company and for some smaller businesses. I also build AI voice agents on Retell AI that connect to Zoom, Google Workspace and custom APIs. ZOOM ADMINISTRATION - Zoom Phone: call flows, auto receptionists, call queues, number management, emergency addressing (E911), desk phones - Zoom Rooms and conference room hardware (Poly, Yealink and others) - Zoom Meetings, Webinars, Team Chat, Zoom Scheduler and cloud recordings - Users, licensing, roles, SSO/SCIM, account settings and security configuration - Zoom API integrations and automation - Migrations from Cisco or other legacy phone systems to Zoom, including hybrid setups - Ongoing "fractional Zoom admin" support for teams without an in-house UC engineer VOICE AI AGENTS (RETELL AI) - AI receptionists that answer calls, capture leads and book appointments - Outbound appointment-reminder agents - Custom functions integrated with Zoom and Google APIs - Webhooks for call status and post-call data - Phone numbers and telephony configuration with Twilio/Telnyx ALSO: Microsoft Teams (Microsoft-certified administrator), Google Workspace administration, contact center platforms (CXone / RingCentral / Genesys), Python automation, Metabase. RIGHT NOW I support two long-term Upwork clients, a law firm and a healthcare company. For them I administer Zoom and Google Workspace, and for the healthcare company I also build and run Retell AI voice agents. WHY WORK WITH ME - Enterprise experience, freelancer responsiveness - I document everything: you get call-flow diagrams and runbooks, not a black box - Bilingual English / Spanish, so I can support your US and Latin American teams - Based in Costa Rica (UTC-6), so I work US Central/Mountain business hours I'm open to hourly, fixed-price and long-term or contract-to-hire roles. Send me a short note about your Zoom setup (users, sites, what isn't working) and I'll reply with how I'd approach it.