COMPANY PROFILE · UPDATED 01 AUG 2026

OpenX

OpenX has the largest independent ad exchange network for publishers and demand partners, while maintaining the highest quality marketplace standards. Learn more.

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Founded: 2007
Headcount: 319
Open roles: 7
Last raised: Seed · Sign in to view

TECH STACK

How OpenX builds

Extracted from OpenX’s job postings we’ve tracked

Programming Languages

Python×5 Java×3 Scala

Data Engineering & Warehousing

BigQuery×4 Apache Airflow×3 Apache Spark dbt

Cloud Platforms

Amazon Web Services×3 Google Cloud×3 Microsoft Azure×2

Databases

SQL×4 NoSQL

AI & Machine Learning

PyTorch×2 TensorFlow×2

Other Software & Platforms

Microsoft Office×2 Google Sheets

DevOps & Infrastructure

Docker

Analytics & BI

Microsoft Excel

LEADERSHIP

Founders & key people

OPEN ROLES

Hiring at OpenX

View all 7 open roles →

FUNDING

Capital raised

Total raised

$70,961,200

Investors

First Round Capital Accel Index VenturesAOL VenturesDAG VenturesJon MillerLocalGlobeMangrove Capital PartnersMitsui & Co. Global InvestmentO'Reilly AlphaTech VenturesPresidio VenturesSamsung VenturesSapphire VenturesVast Venturescyber communicationsyet2Ventures

Funding rounds

Seed
$450KApr 29, 2020
Series E
Samsung Ventures, Sapphire Ventures, Mitsui & Co. Global Investment, Index Ventures, Accel, cyber communications, yet2Ventures
$25MJan 16, 2013
Series D
Sapphire Ventures, AOL Ventures, Mitsui & Co. Global Investment, Vast Ventures, Accel, Presidio Ventures, DAG Ventures, Index Ventures
$20MMay 30, 2011
Series C
DAG Ventures, Mangrove Capital Partners, Accel, First Round Capital, Jon Miller, Index Ventures
$10MMay 25, 2009
Series B
Accel, First Round Capital, O'Reilly AlphaTech Ventures, Index Ventures, Mangrove Capital Partners
$10.5MDec 30, 2007
Series A
Index Ventures, First Round Capital, O'Reilly AlphaTech Ventures, Mangrove Capital Partners, LocalGlobe, Vast Ventures
$5MJun 12, 2007

Funding data via Diffbot

Categorized in

Industry

Commerce & Marketplaces Marketplaces

LOCATIONS

Where they work

OpenX offices

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Pasadena, CA888 East Walnut Street 2nd Floor