Dinesh Ravishanker
Angel Investor
West Los Angeles, United States
Dinesh Ravishanker is a seed investor in West Los Angeles focused on SMS and SaaS. Active founder of // Petnet.io, Vonjour.com, CallFire.com. Former ceo // callfire and skyyconsulting. Raised financing // $30m via Morgan Stanley, IGC & angelsDinesh Ravishanker is CEO and co-founder of CallFire (www.callfire.com), a pioneer in cloud telephony solutions that help companies and organizationsto grow by providing them with reliable, affordable voice and text message communications. Ravishanker led corporate strategy, product design, and business development for the company from 2004 to 2013 taking the company from $0 to nearly $18m in annual revenues and over 200,000 customers globally. He is also the co-founder of PetNet.io, a SmartFeeder for busy owners with dogs or cats, that comes outfitted with numerous sensors paired with on-device and cloud based intelligence to provide an optimal hub for pet consumption analytics. Dinesh is also the co-founder of Vonjour.com, a hosted PBX company with aspirations of simplifying, and democratizing telephony for small businesses around the world. Additionally, Ravishanker was co-founder of Hallo – an iPhone and Android app that enabled candidates and celebrities to reach supporters using their actual voice and free global messaging, akin to WhatsApp and TextPlus. He also previously served as President of Skyy Consulting Inc. and has led business analysis and user interface design projects for the U.S. Navy, Pfizer, and Unisys Corp. He has been recognized as an Ernst & Young Entrepreneur Of The Year® 2013 program semi-finalist for the Greater Los Angeles region, and also is an Inc. 500 study ranked CEO (CallFire was #285 on the 29th annual coveted Inc. 500 list). Ravishanker is a recognized leader in the Internet telephony space and has focused his career on VoIP integration consulting and growing online strategies for cloud telephony start-ups. A highly entrepreneurial executive, his track record in successfully driving sales through innovative business development and online marketing techniques, particularly in the telecom space, has make him a recognized “go to” source on issues and trends within the telecom solutions, call center management, political marketing, enterprise marketing, customer outreach, and the Internet. Dinesh earned a B.S. in Computer Science and M.B.A. from U.C. Irvine and completed an M.D.E. (Management Development for Entrepreneurs degree) at UCLA Anderson. Ravishanker grew CallFire from the ground up. Bootstrapped from inception, CallFire now serves over 200,000 customers and is on an annual run rate $20 million-plus. As CEO, Ravishanker oversaw the development and marketing of cloud telephony voice and text messaging and marketing services for businesses (small and enterprise scale), political action groups, consultants and candidates. Using CallFire technology, any business or organization – from start-up to political/grassroots campaign to the enterprise – can reach its customers on any device, over voice or text, using CallFire’s massively scalable, cloud telecom platform to build virtual call centers and much more. CallFire products include Voice APIs, business text messaging, voice broadcast, local phone numbers, call tracking, IVR power dialing for agents, and more.
- Total investments:
- 1
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Dinesh Ravishanker invests in
Stages Dinesh Ravishanker invests in
Countries Dinesh Ravishanker invests in
Contacts
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Investment Focus
Industry
- SMS 1 (100%)
- SaaS 1 (100%)
- Messaging 1 (100%)
- Advertising 1 (100%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| CallFire is now under the EZ Texting Brand umbrella. Since its founding, EZ Texting has served over 160,000 customers and is the #1 SMS marketing software, setting the standard for business texting platforms. Our messaging solutions are featured as a top 20 Best Product for Marketers and allow businesses of all sizes to reach and engage theirmobile audiences. Headquartered in Santa Monica, CA, and with offices in Austin and Kiev, EZ Texting is a SaaS company that delivers the fastest, easiest, and most reliable way to connect. Backed by Morgan Stanley Expansion Capital, Investor AB, and ROCA Partners, EZ Texting is continuously voted a Best Place to Work.Originally founded in 2006, EZ Texting was acquired by CallFire in 2012. In 2018, CallFire, founded in 2004, consolidated all of its brands under the EZ Texting. | Seed / May 01, 2005 |
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FAQ
What does Dinesh Ravishanker invest in?
Dinesh Ravishanker invests primarily in SMS, SaaS and Messaging startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Dinesh Ravishanker?
Public channels for Dinesh Ravishanker include LinkedIn, X (Twitter) and Facebook. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Dinesh Ravishanker last invest?
The most recent investment recorded for Dinesh Ravishanker closed in May 2005. Shizune tracks 1 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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