Test IO: Detailed Company Information & Corporate Profile
Summary
Test IO, founded in 2011 and headquartered in Berlin, Germany, operates within the IT Services sector with a workforce of between five thousand and ten thousand employees.
Its portfolio spans exploratory testing, test case creation, usability assessments, software quality assurance, crowd testing—including overnight and weekend coverage—functional verification, mobile app evaluation, automated test execution, performance analysis, accessibility audits, and human‑experience optimization. The firm also integrates AI‑infused applications to elevate testing fidelity across localization, inclusion, and translation initiatives.
Headed by CEO Tariq King with Max Schultz leading US sales and Susan Yi overseeing customer success, Test IO was acquired and reports annual revenue between $500 million and $1 billion. Its SIC codes include 7372 and 7373, reflecting a focus on information technology consulting and software development.
| Test IO Website | test.io |
| Social Links |   |
| Phone Number | 415-921-9891 |
| Industries | |
| Test IO Headquarters Address | Sonnenallee 223a, Berlin, Germany, 12059 DE |
| Company Size | 5000-10000 employees |
| Specialities & Services | Exploratory Testing, Test Cases, Usability Testing, Software Testing, Quality Assurance, Crowd Testing (Test overnight & on weekends), Functional Testing, App Testing, Test Case Execution, Test Automation, Performance Testing, Accessibility Audits & Testing, Human Experience, AIIA, AI Infused Application, Accessibility, Usability, Testing, Quality, QE, QA, Inclusion, Localization, Translation, Agentic |
| SIC Code | 7372, 7373 |
| NAICS Code | 334614 Software and Other Prerecorded Compact Disc, Tape, and Record Reproducing, 511210 Software Publishers, 541512 Computer Systems Design Services |
| DMA Code | San Francisco Bay Area |
| Founded | 2011 |
| Estimated Annual Revenue | $500M - 1B |
| Operating Status | Acquired |
| Updated: | 2026-09-05 |
Competitors
Name | Founded | Type | Employees |
|---|---|---|---|
| 2012 | Privately Held | 100 - 250 | |
| 2008 | Sole Proprietorship | 25 - 100 | |
| 2013 | Privately Held | 25 - 100 | |
| 2007 | - | 200-500 |
Estimated Website Traffic
The chart shows a growth in traffic to the test.io website. In August, traffic increased to 509291, compared to 479969 in the previous month. The highest traffic in 2026 was recorded in August, reaching 509291 visits.
Workforce Turnover
Number of employees switched from or switched to
Departmental sample breakdown
Length of Employment
Test IO's workforce includes employees across a wide range of tenure levels.
3% have been with the company for less than 1 year16% have been with the company for 1 to 2 years30% have been with the company for 3 to 4 years23% have been with the company for 5 to 7 years15% have been with the company for 8 to 10 years13% have been with the company for more than 11 years
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Test IO Corporate Information: FAQ
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