About Rozper

Building the last comms platform you'll ever buy.

Rozper was founded on the bet that voice, video, messaging, contact center, and AI belong on one carrier-grade network — not stitched together from five vendors and a Zapier subscription.

2018
Founded
150+
Countries served
240+
Rozpernauts
$140M
ARR run-rate
Why we built Rozper

The comms stack was broken. Nobody had fixed it from the carrier up.

In 2018 our founders were running a 4,000-seat call center operation. Five vendors, three TLDs of dashboards, four separate bills, and an SLA that read like a horoscope. So they started building.

The market told us the answer was a “CPaaS” — an API for the carrier you couldn't see, a contact center you still had to bolt on, an AI layer rented from yet another vendor. Three boxes. Three contracts. Three places where something could break and nobody owned it.

We took the other path. We built our own carrier interconnects first, then the UCaaS layer on top, then the contact center, then the AI. One platform. One bill. One pager who answers the phone at 3am.

Eight years on, that thesis hasn't aged. Rozper powers communications for thousands of teams in 150+ countries — from two-person startups answering their first call with an AI receptionist, to global contact centers placing a quarter of a billion minutes a month.

“We don't want to be the most exciting telecom company on earth. We want to be the one you forget is even there — because every call just works.”

MC
Marcus Chen
Co-founder & CEO
How we work

Four principles. Pinned to every wall.

They aren't aspirational, they're operational. Every roadmap review starts by checking the next quarter against this list.

Principle 01

Carrier-grade or it doesn't ship.

Every line of code in Rozper has to survive an Atlanta thunderstorm and a Tokyo undersea-cable cut. If it can't, it stays on the branch.

Principle 02

Latency is a feature.

Faster trumps fancier. We measure round-trip time in milliseconds because our customers' agents do — and so do their customers.

Principle 03

One platform. No silos.

We refuse to ship a feature that requires a second login, a second invoice, or a second vendor to answer the support ticket. That's the whole point.

Principle 04

Show, don't sell.

The product is the demo. The demo is the trial. The trial is the contract. We'd rather you spin up a sandbox at 11pm than book a 30-minute deck.

Our story

Eight years. One platform.

  • 2018
    Founded
    2018

    Marcus Chen and Priya Subramanian start Rozper in a four-person room in SoMa, San Francisco. First carrier interconnect signed inside 90 days.

  • 2019
    Series A · $14M
    2019

    Led by Hexa Ventures. First 100 customers. SIP trunking and DID inventory across the US, UK, and Singapore.

  • 2020
    Contact Center launch
    2020

    Native CCaaS goes GA. Through the pandemic, we onboard 8,000 remote agents in 60 days for two enterprise customers.

  • 2021
    Series B · $48M
    2021

    Led by Greylight Partners. EU region opens in Frankfurt. Wholesale Voice product line launches. 1B annual minutes.

  • 2023
    Series C · $120M
    2023

    Led by Aperture Capital. APAC region online in Singapore. SOC 2 Type II, ISO 27001, HIPAA-ready packs published.

  • 2024
    AI Receptionist · Conv. IQ
    2024

    First production-grade AI features land on the platform — no second login, no second vendor, no second invoice.

  • 2026
    Where we are now
    2026

    240+ Rozpernauts. 150+ countries. $140M ARR run-rate. Profitable for nine consecutive quarters.

Leadership

People who've shipped this before.

Operators from the companies you already trust with parts of your stack — building the platform that replaces all of them.

MC
Marcus Chen
Co-founder & CEO
Prev. Twilio · Cloudflare
PS
Priya Subramanian
Co-founder & CTO
Prev. AWS · Bandwidth
DO
David Okonkwo
Chief Revenue Officer
Prev. RingCentral · 8x8
SK
Sara Kowalski
Head of Product
Prev. Notion · Front
TV
Tomás Vargas
Head of Engineering
Prev. Stripe · Vonage
AD
Aïcha Diallo
Head of Security
Prev. Cloudflare · Auth0

Backed by people who've built networks.

Lead investors · Series A → C
Hexa Ventures
Greylight Partners
Aperture Capital
South Park Commons
Maven Ridge
Index Ventures
4 SEs online · Avg 47s first response

Want to see Rozper live?

No deck. No SDR phone tree. A solutions engineer who has read the docs, can architect your stack, and can quote your contract live.