OverviewSuggest Edit

Testlio is a developer of an end-to-end app testing management platform designed to connect enterprises with testers. It offers an online platform, full testing, integration, reporting, functional testing, and localization services.

HQSan Francisco, CA, US
Employee Ratings4.8

Latest Updates

Employees (est.) (Jan 2021)243(+3%)
Cybersecurity ratingBMore

Key People/Management at Testlio

Steve Semelsberger

Steve Semelsberger

Kristel Kruustük

Kristel Kruustük

Founder & Chief Testing Officer
Jared Straub

Jared Straub

Engagement Director
Marko Kruustük

Marko Kruustük

Founder & COO
Rudolf Elbrecht

Rudolf Elbrecht

Testing Director
Heldin Lind

Heldin Lind

Head of HR
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Testlio Office Locations

Testlio has offices in San Francisco, Austin, Palo Alto, Tallinn and in 1 other location
San Francisco, CA, US (HQ)
303 2nd St #460, San Francisco
Austin, TX, US
2021 Guadalupe St #260
Palo Alto, CA, US
345 California Ave
Tallinn, EE
Telliskivi 60
Tartu, EE
Narva maantee 3
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Testlio Financials and Metrics

Summary Metrics

Founding Date


Testlio total Funding

$7.5 m

Testlio latest funding size

$6.30 m

Time since last funding

5 years ago

Testlio investors

Testlio's latest funding round in April 2016 was reported to be $6.3 m. In total, Testlio has raised $7.5 m
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Testlio Operating Metrics

Testlio's Users was reported to be 1 b in Sep, 2019.
Sep, 2019


1 b

Software Applications

72.08 k

Issues Fixed

47.29 k


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Testlio Acquisitions / Subsidiaries

Company NameDateDeal Size
Testilo OÜ

Testlio Cybersecurity Score

Cybersecurity ratingPremium dataset



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Testlio Online and Social Media Presence

Embed Graph

Testlio News and Updates

How Kristel Kruustük turned a passion for testing apps into a big business

When Kristel Kruustük finished high school in Estonia, she went to London and became a waitress. Her friends turned her on to the tech scene, and she decided to go back to school to study software development. Kruustük fell in love with software testing and started her own company, Testlio, testing …

Testlio Blogs

4 social media trends and what they mean for mobile app developers

The past year saw an increase in technology upgrades and earlier adoption. As consistent leaders of global transformation, social media networks once again led the way—influencing the lives and work…

Testlio Announces European and Alliances Expansion Initiatives

Senior executive Tom Chmielewski joins Testlio in London January 18, 2021. London, United Kingdom. Testlio, the originator of networked testing, today announced an important new hire. Tom Chmielewski is now…

Why we built this: a guide to collective testing, for engineering leaders

As an engineering leader on Testlio’s platform team and former product leader at Skype and Microsoft, I’ve evaluated many new tools and concepts to elevate engineering practices and processes. To…

5 tools for strengthening the online retail experience

The top brands in the world strive to deliver more of what their customers want in the most convenient and delightful way possible. L’Oreal is relaunching 600 of their 3,000

Testing for intuitive design

Apps are essentially technology products—products that aim to solve a problem for users. Design is a salient feature in all apps; it is how users understand, interact, and us…

5 CX trends in media and entertainment

Almost hilariously, an article from 2007 states that 57% of surveyed media and entertainment executives reported that the biggest threat to media and entertainment was consumer desire to create their…
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Testlio Frequently Asked Questions

  • When was Testlio founded?

    Testlio was founded in 2012.

  • Who are Testlio key executives?

    Testlio's key executives are Steve Semelsberger, Kristel Kruustük and Jared Straub.

  • How many employees does Testlio have?

    Testlio has 243 employees.

  • Who are Testlio competitors?

    Competitors of Testlio include SmartBear Software, Applause and test IO.

  • Where is Testlio headquarters?

    Testlio headquarters is located at 303 2nd St #460, San Francisco, San Francisco.

  • Where are Testlio offices?

    Testlio has offices in San Francisco, Austin, Palo Alto, Tallinn and in 1 other location.

  • How many offices does Testlio have?

    Testlio has 5 offices.