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How RingCentral founder Vlad Shmunis built a $902.8M cloud-communications business with a 5,900 person team by 2026

RingCentral is a cloud-based unified communications (UCaaS) platform — voice, business messaging, team collaboration, video conferencing, and contact center — used in more than 350,000 organizations worldwide. Headquartered in Belmont, CA and founded in 1999, RingCentral has raised $444M and carries a market cap of roughly $3.23B.

Updated June 16, 2026
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$902.8M
Annual Revenue
5,900
Employees
$3.23B
Market Cap
350K+
Customer Orgs
1999
Founded
Company Overview

RingCentral: unified cloud communications at $902.8M annual revenue

RingCentral delivers a cloud-based communication and collaboration platform that unifies voice, business messaging, team collaboration, video conferencing, and online meetings. Its core product line includes RingCentral Office (cloud PBX / VoIP), RingCentral Contact Center, RingCentral Glip (team workspace), RingCentral Professional, and RingCentral Internet Fax — sold across the US, Canada, and the UK.

The company serves more than 350,000 organizations worldwide with a UCaaS solution designed to scale with enterprise growth — bridging smartphones, tablets, computers, and desk phones without requiring on-premise hardware. RingCentral sits in the Information Technology and Services industry and is backed by Sequoia Capital, Khosla Ventures, and DAG Ventures.

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IP 54.18.224.92 · London, UK · ✓ Resolved
Identifying visitor
Acme Corp ✓ Verified
SaaS · 210 employees · Series B
Fit 92
Tech
Hubspot
Pages
Pricing · Docs
Intent
High
Founder

Vlad Shmunis, founder of RingCentral

RingCentral was founded by Vlad Shmunis with a mission to change how people communicate around the world. From its Belmont, California headquarters, the company has scaled into one of the largest pure-play UCaaS vendors globally — moving small business and enterprise telephony off legacy on-premise PBX hardware and into the cloud.

Early-stage investors included Sequoia Capital, Khosla Ventures, and DAG Ventures, who together backed RingCentral with $444M in funding prior to and during its growth into a public-market-listed company.

Product Portfolio

RingCentral's core product lineup

RingCentral packages its cloud-communications stack into a set of distinct products that span the full UCaaS spectrum:

phone_in_talk RingCentral Office (Cloud PBX / VoIP) support_agent RingCentral Contact Center forum RingCentral Glip (Team Workspace) call RingCentral Professional fax RingCentral Internet Fax video_camera_front Video Conferencing & Online Meetings sms Team Messaging & SMS api Open API & Integrations
Tech Stack

Tools and technologies RingCentral uses

Based on observed integrations and public technology fingerprints, RingCentral's stack spans infrastructure, frontend frameworks, marketing automation, analytics, and revenue tooling:

cloud AWS SDK for JavaScript flash_on Akamai dns Cloudflare DNS dns Nginx storage Apache code React Redux code Ruby on Rails code Bootstrap Framework campaign Marketo people Salesforce payments Stripe support_agent Zendesk chat Drift analytics Google Analytics analytics Mixpanel analytics Hotjar monitor_heart AppDynamics monitor_heart New Relic ads_click DoubleClick ads_click LinkedIn Marketing Solutions verified_user OneTrust tag Segment.io tag Google Tag Manager work Microsoft Office 365 work Workday Recruit
3rd-Party Intent Data

See which companies are researching RingCentral right now

Happierleads ingests 3rd-party intent signals from across the web — content consumption, software-comparison searches, review-site activity, and topic surges — to surface companies actively in-market for tools like RingCentral. Combine it with your own first-party visitor data to find buyers before your competitors do.

Acme Corp
SaaS · 800 employees · USA
Hot · 94
RingCentral alternativesUCaaS pricingCloud PBX
Beacon Health
Healthcare · 2,400 employees · UK
Warm · 78
Business VoIPContact center software
Cypress Logistics
Logistics · 1,200 employees · Germany
Warm · 71
Video conferencingRingCentral vs Zoom Phone
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Decision-Makers

Key decision-makers at RingCentral

Verified contact data for senior decision-makers across Sales, Marketing, Engineering, and Operations at RingCentral's Belmont, CA headquarters and global offices.

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Vlad Shmunis
Founder
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Sarah Mitchell
VP of Marketing
lock Locked
??
Michael Davidson
VP of Sales
lock Locked
??
Jessica Park
Director of Customer Success
lock Locked
??
Daniel Kim
Head of Engineering
lock Locked
??
Priya Patel
VP of Product
lock Locked
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Download the full database of 175M B2B contacts

Every contact for RingCentral — and every other company on Earth — in one CSV. Free updates for life.

download Download 175M contacts
contacts.csv 175.4M rows · 8.4 GB
NameTitleEmailCountry
Sarah ChenVP Saless.chen@stripe.com🇺🇸 US
Michael DavidsonHead of Growthm.d@ringcentral.com🇺🇸 US
Priya PatelCMOpriya@figma.com🇺🇸 US
Lars EriksenVP Marketinglars@spotify.com🇸🇪 SE
Akira TanakaCROakira@mercari.com🇯🇵 JP
Emma WilsonHead of Salesemma@monzo.com🇬🇧 GB
Carlos VargasVP Revenuec.vargas@rappi.com🇲🇽 MX
Sophie MüllerDirector Salessophie@n26.com🇩🇪 DE
James O'BrienChief of Staffjames@intercom.com🇮🇪 IE
Aisha KhanVP Salesaisha@razorpay.com🇮🇳 IN
Sarah ChenVP Saless.chen@stripe.com🇺🇸 US
Michael DavidsonHead of Growthm.d@ringcentral.com🇺🇸 US
Priya PatelCMOpriya@figma.com🇺🇸 US
Lars EriksenVP Marketinglars@spotify.com🇸🇪 SE
Akira TanakaCROakira@mercari.com🇯🇵 JP
Emma WilsonHead of Salesemma@monzo.com🇬🇧 GB
Carlos VargasVP Revenuec.vargas@rappi.com🇲🇽 MX
Sophie MüllerDirector Salessophie@n26.com🇩🇪 DE
James O'BrienChief of Staffjames@intercom.com🇮🇪 IE
Aisha KhanVP Salesaisha@razorpay.com🇮🇳 IN
175,432,891 rows
Verified · 200+ countries
verified
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FAQ

Frequently asked questions about RingCentral

What is RingCentral's revenue in 2026?add
RingCentral's annual revenue in 2026 is $902.8M, placing it in the $500M-$1B revenue band. RingCentral carries a market capitalization of approximately $3.23B.
Who founded RingCentral?add
RingCentral was founded by Vlad Shmunis. The company was started in 1999 and is headquartered at 20 Davis Drive, Belmont, California.
How much funding has RingCentral raised?add
RingCentral has raised a total of $444M. Pre-IPO backers included Sequoia Capital, Khosla Ventures, and DAG Ventures.
How many employees does RingCentral have?add
RingCentral has approximately 5,900 employees as of 2026, putting it in the 1,000-10,000 employee band across its US, Canada, UK, and international offices.
Where is RingCentral headquartered?add
RingCentral's headquarters is at 20 Davis Drive, Belmont, California 94002, United States.
What does RingCentral do?add
RingCentral provides a cloud-based unified communications and collaboration (UCaaS) platform that unifies voice, business messaging, team collaboration, video conferencing, online meetings, and contact center capabilities. Its product line includes RingCentral Office, Contact Center, Glip, Professional, and Internet Fax — serving more than 350,000 organizations worldwide.

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This morning's qualified visitors

Live
Identified
86 + 18%
ICP match
52 + 24%
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Northwind Co. just visited /pricing
3rd visit · enterprise · USA

Data and sources

All figures on this page are compiled from public filings, press releases, observed technology fingerprints, and the Happierleads proprietary database (over 175M verified B2B contacts and 1.6M companies). Last updated June 16, 2026. Are you a RingCentral executive and want to update this data? Contact us.