Ship with confidence, everywhere it matters.

Trusted by the world’s best brands, Testlio combines human insight with our fully managed AI-powered crowdsourced testing platform to help product and engineering teams ensure every release works for every user across markets, devices, languages, and payment methods.

Portraits of four diverse smiling individuals surrounded by colorful icons representing technology, money, global connection, and language.

Who we are

Testlio helps brands deliver digital experiences that feel reliable, inclusive, intuitive, and worthy of customer trust. We do this through three core pillars that define how we work and the value we deliver:

Coverage

Available when and where you need it

We provide the broad, real-world coverage enterprises need to release with confidence. By seamlessly integrating global experts into your release pipelines, we ensure your products work as intended across 600K+ devices, 800+ payment methods, 150+ countries, and 100+ languages.

Platform

To manage testers, results, and releases

Testlio’s Platform, powered by LeoAI Engine™, combines human expertise with machine intelligence to orchestrate testing, from start to finish. By matching the right testers, automating workflows, and surfacing predictive insights in real time, it helps teams minimize risk, ship globally, and release with confidence, every time.

Software testing platform interface showing test cases list with selected test 'Modular component integration,' test details, and unresolved feedback comment from Leslie Alexander.
Solutions

Extensive real-world validation for your most demanding releases

We help teams find and fix issues that matter in the environments where users live and work. Whether testing payments, devices, or localized flows, Testlio offers end-to-end testing solutions tailored to unique customer journeys to ensure quality is measured where it counts and releases meet expectations everywhere.

User interface with world map marked by a red star in Europe, three user icons with follower counts on the left, and four wireframe globe diagrams on a dark background.

Where our story began

Testlio started in 2012 with Kristel Kruustük, a frustrated software tester passionate about quality assurance and making the world a better place.

Along with her co-founder and now-husband, Marko Kruustük, they entered the AngelHack hackathon in London with a business idea that would improve the way software testing was done. They won AngelHack, moved to Austin for the Techstars accelerator, and the rest is history.

Get to know our leaders

Today, Testlio’s leadership team continues to advance our mission and support our people, clients, and community.

Executive Leadership Team

Summer Weisberg Portrait

Summer Weisberg

CEO

Dean Hickman-Smith Portrait

Dean Hickman-Smith

CRO

Marko Kruustük Portrait

Marko Kruustük

Founder

Brian Benson Portrait

Brian Benson

CFO

Mike Stearns Portrait

Mike Stearns

VP, Marketing

Additional Leaders

Katie Bapple Portrait

Katie Bapple

VP, Freelancer Community

Zach Chavez Portrait

Zach Chavez

VP, Client Impact

Tom Chmielewski Portrait

Tom Chmielewski

VP, EMEA & Acting VP APAC

Eric Liebman profile picture

Eric Liebman

VP, Payment Solutions & Partnerships

Michelle Surya Portrait

Michelle Surya

VP, Strategic Accounts

Rudolf Elbrecht Portrait

Rudolf Elbrecht

Senior Director, Testing Delivery

Helen Burge Portrait

Helen Burge

Director, Digital Accessibility

Putu Kusumawardhani Portrait

Putu Kusumawardhani

Director, Client Impact

Samantha Marsh Portrait

Samantha Marsh

Director, People & Culture

Stephanie Newell Portrait

Stephanie Newell

Director, Talent Acquisition

Kaia Saar Portrait

Kaia Saar

Director, Accounting & Financial Controls

Marielle Tamkorv Portrait

Marielle Tamkorv

Director, Client Impact

Paulo Feitosa Portrait

Paulo Feitosa

Senior Manager, Quality Innovation

Janine Herman Portrait

Janine Herman

Senior Manager, Business Operations

Simona Mihăicuţa Portrait

Simona Mihăicuţa

Senior Manager, Freelancer Compliance & Quality

Andrey Popov Portrait

Andrey Popov

Senior Manager, Quality Engineering

Hemraj Bedassee Portrait

Hemraj Bedassee

Testing Delivery Practitioner

Jillian Heller Foreman Portrat

Jillian Heller Foreman

Lead User Research Manager

Board

Kristel Kruustük Portrait

Kristel Kruustük

Founder & Board Director

Insik Rhee Portrait

Insik Rhee

Board Director

Carmen Scarpa Portrait

Carmen Scarpa

Board Director

Dave Keil Portrait

Dave Keil

Board Director

Marko Kruustük Portrait

Marko Kruustük

Founder & Board Observer

Anthony Lee Portrait

Anthony Lee

Board Observer

Our Investors

Altos Ventures Logo

Altos Ventures

Founded in 1996, Altos Ventures is a technology investment firm based in Silicon Valley. Through patient and pragmatic investing, Altos partners with early to growth stage technology companies operating in consumer and enterprise sectors, with the goal of building durable and compounding businesses over decades.

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Spring Lake Growth Equity Partners

Spring Lake Equity Partners is a Boston-based private equity firm. They invest equity capital primarily in later-stage, technology-oriented private companies in sub-sectors such as software, digital media, mobile, data center infrastructure, healthcare IT, and business/financial services.

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Techstars Ventures

Founded in 2006, Techstars began with three simple ideas—entrepreneurs create the future, collaboration drives innovation, and great ideas can come from anywhere. Today their mission is to make innovation accessible to everyone, everywhere.

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Vertex Ventures

Vertex Ventures US was created to empower high-principled founders to innovate and disrupt. The quiet visionaries creating foundational B2B software will change the way people use technology—making the world a little better, safer, and easier.

Culture

Built to ROAR, together

Our culture is deeply rooted in our identity and R.O.A.R defines who we are as TestLions. It’s at the center of everything we do and how we describe ourselves to clients, teammates, friends, and anyone who asks. It’s a shared identity that brings our values to life, drives us forward, and inspires how we lead, build, and grow.

Through ROAR, we define a TestLion as someone who is:

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Relentless

Unwavering dedication. Persistent pursuit of excellence. Unstoppable passion.

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Open

Intellectual curiosity. Unbiased consideration. Transparent communication. Fluid mindset.

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Adaptive

Agile responsiveness. Resourceful flexibility. Rapid thinking. Continuous learning.

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Resilient

Flourishing amidst adversity. Intentional recovery. Inner strength and stability.

Our values

Embedded within ROAR, our six values enhance employee experience and connect our purpose with our day-to-day impact. They are what make Testlio’s quest to fuel amazing app experiences unstoppable.

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Be kind

Help without being asked. Seek to understand first. Practice Radical Candor. Show appreciation. Be humble, honest, and authentic.
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Fuel the team

Make others around you better. Be responsive. Play your position. Collaborate effectively to push the work forward.
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Foster inclusion

Welcome people. Embrace individual differences. Encourage belonging. Strive to hire and collaborate with people of broad perspectives. Promote a fair and unbiased evaluation process.
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Make an impact

Every role matters to our collective success. Activate your empowerment. Prioritize important things. Deliver meaningful results.
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Give a damn

Commit to the work. Be solutions-oriented. Deliver exceptional client experiences. Find ways to be hopeful, even when it’s hard.

Challenge forward

Embrace novelty to drive progress. Invest in yourself to always be ahead of the curve. Challenge yourself & others. Support the success of each transformation.

Our social impact

We believe companies have a responsibility to positively influence the world around them. Guided by four of the 17 United Nations’ Sustainable Development Goals (SDGs), we focus our efforts on programs and policies that support people, protect the planet, and advance equity.

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Crisis Aid

We offer $500 crisis-aid grants to employees, contractors, and freelancers affected by natural disasters, conflicts, or humanitarian emergencies, and donate to organizations such as Amnesty International, Doctors Without Borders, UNICEF, and the International Committee of the Red Cross.

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Sustainability

As a fully remote company, we reduce unnecessary travel and resource use. When in-person travel occurs, we purchase carbon offsets through TerraPass and GreenPerk, and support reforestation through One Tree Planted.

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Well-being

Full-time employees receive a quarterly well-being stipend and access to optional counseling through Siffi. We also support global mental health efforts through donations to the World Federation of Mental Health and the Child Mind Institute.

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Human Rights

We fund organizations that challenge injustice and inequality, including the Equal Justice Initiative and Amnesty International, and provide relocation assistance during humanitarian crises.

Whether you build products or test them, there is a place for you here.