We are test IO

We help businesses ship better apps with fewer bugs.
Alexander D.
Alexander D.
Head of Design
Alex is a designer by day and an artist by night. When he's not busy with UX and UI-design, he's creating music for humans in the post-human age.
Alexander L.
Product Manager
Alex is an American football enthusiast who concerns himself with analyzing new situations and finding the right solutions together with stakeholders and customers.
Alexander T.
Alexander T.
Sales Manager
Alex has a Masters in International Economics. He loves to cook and to be out in nature. Apart from that, he is avidly dedicated to leading the German SDR Team.
Customer Success Manager
Alex has years of experience working with clients in large and small companies in England, Switzerland, and Germany. Helping clients to be successful with our product is what drives her.
Account Executive
Amanda has never met a dog or seen a sunset that she didn’t like, and aspires to bring that same passion to her work at test IO.
brendan headshot
Software Quality Analyst
Brendan enjoys researching new things and watching baseball. He strives to spend as much time as possible with his wife and two daughters.
Customer Success Manager
Celina enjoys building lasting customer relationships, one test at a time, and strives to help her customers create meaningful and innovative technology.
charles headshot
Software Quality Analyst
Charles is usually smiling, and if he isn't uncovering bugs, he may be on the beach, playing soccer, reading, dancing, or helping others to think outside the box.
Key Account Manager
Claudia finds peace in feeling the road under her bicycle tires. She's also a master at helping customers find their happy place.
Head of Customer Success Management
When Dani isn't designing and mending upholstery with a passionate fervor, she makes sure that our customers are getting the most out of test IO.
Head of Sales
Dennis is a gentleman through and through who’s known for organizing fabulous test IO company trips.
Data Scientist
Didem loves learning everything relating to the brain, which is a fitting endeavour since she handles all the brainy stuff around here.
Community Manager
Evgeniya is passionate about languages and communication, that's why she makes sure that all our testers’ needs are taken care of.
Sales Engineer
When Fabien isn't fighting in the octagon, he writes code and cooks with the self-confidence that every Frenchman has.
CTO & Co-Founder
test IO is Jan's brainchild, and when he isn't doing everything under the sun when it comes to vision and direction of the company, he wakeboards.
Software Engineer
Jiayi is a developer capable of coding but incapable of writing a proper bio.
Digital Marketing Manager
John ensures that software teams have the opportunity to see what test IO can do for them. He enjoys workshopping nutrition topics and catching up on the latest Netflix Original.
jonas headshot
Software Quality Analyst
Jonas is an open-minded person with a desire to make his fellow human laugh. He likes good food and is always looking for new tennis partners.
Head of Finance
Jörg enjoys running in his free time, and when he's not, he's running our numbers with a sharp eye. Other than that, he enjoys an occasional Guinness.
Senior Software Quality Analyst
Whether rowing, swimming, or playing guitar on the beach, you can always find Joe near the water. On land he delivers value to developers, marketers, and owners by helping them identify bugs with test IO.
Software Quality Analyst
When Julian isn’t working on his car, listening to Queens of the Stone Age or watching The Office, he is engaging customers with a contagiously positive and optimistic approach.
Customer Success Manager
Justin loves helping people get the most out of their technology. When he’s not in the office, he can be found on a basketball court, a golf course, or a beach.
Software Engineer
Dancing whether or not you're watching, Lucas likes discussing and developing human-facing features. He finds our world beautiful and a bit crazy.
Sales Manager
When Magdalena isn't making calls and booking demos, she is petting cats with a redbull-induced enthusiasm.
Team Lead, Software Quality Analysts
Like Sales can't go without Marketing, test IO doesn't want to exist without Manh. He has such a happy nature, cheering up everyone he meets.
Senior Customer Success Manager
Martin is a veteran customer success manager. His dream is to buy a large farmhouse and adopt all the orphan dogs in Berlin so they can live there.
Finance Manager
Maryna is an optimist with a “nothing is impossible” attitude. Maryna is crazy about sports and nutrition, and believes every human should try to make this world a better place.
Financial Controller
Matt is a geography buff who enjoys traveling to distant lands. He is a jack of all trades in his work here at test IO, with a focus on financial controls.
Account Manager
On the weekends you can usually find Matt at a concert, on his bike, or making a mess in the kitchen. During the week, though, he's focused on helping teams ship high-quality software, faster.
VP Global Operations
Max loves deals, especially in North America, where he was test IO’s first employee. His preferred weekend destination is somewhere in the great outdoors, without any cell service.
Senior Software Quality Analyst
Be it throwing a frisbee, shooting a basketball, or sniffing out bugs in software, Michael brings the same attention to detail to everything he does
Key Account Manager
A woman whose wit is only matched by her warmth, Natasha makes sure that clients are well taken care of.
Customer Success Manager
When Patrick isn't helping customers maximize their value with test IO, he's usually either on a baseball field or exploring the great outdoors.
Software Engineer
Pierre loves adventure and travel as well as music production. He likes seeing things from the user's standpoint and developing great features.
Phil enjoys regaling his colleagues with tales of software distributed on disks. He is embarrassed but very proud that his children speak better German than he does.
pratik headshot
Account Executive
Pratik is a former QA Lead who finds joy in helping customers create innovative software products. He dreams about being a world-renowned music producer one day.
rachel cohen
Customer Success Manager
Though Rachel regrets spending time apart from her miniature poodle, helping customers effectively harness the power of the crowd for QA is a worthy distraction.
Team Lead, Sales Development
Ryan enjoys good banter with a touch of wit and never backs down from a challenge to make someone laugh. He has a lot to learn but also a lot to teach.
Data Analyst
Sevda likes to play with key performance metrics and her clarinet just because both let her tell stories.
Research and Development Manager
Simon is a code artist, who started building websites before the internet.
You will never see him not wearing a cat t-shirt.
Community Manager
Stefan has a lot of energy and really enjoys communicating with customers and testers alike, that's why managing the community is his ideal role.
stefanie liedtke
Sales Operations
Stefanie loves traveling and spends a lot of vacation time working with cheetahs, leopards, and other wildlife. She focuses on improving data and user experience for our team. 
Senior Software Engineer
Stephen writes code, reads Greek, and is hoping to speak German. If you see his dog Tuck bounding around, he won't be far behind.
Manager, US Customer Success
Susan loves customers and cats. In her leisure time, she enjoys dreaming of her next travel destination and coffee.
Customer Success Manager
Svetlana has an appreciation of the smaller things in life, like feeding pigeons and taking long strolls in the park. I mean, who else is going to feed the pigeons?
CSO & Co-Founder
Tommy is an early morning riser with a passion for just anything that takes place
in, on or under water. This includes diving, swimming, wakeboarding and being on a boat.
Software & DevOps Engineer
Tilman likes to read about politics, tech, and an occasional poem. His best ideas come in the midst of silent walks.
Senior Customer Success Manager
Tina is passionate about optimizing processes and products for our customers.
She also likes music and seeing every corner of the globe.
Software Quality Analyst
Trevor has a passion for democratized QA testing. On the weekends, he enjoys skiing off cliffs, summiting peaks, and grilling steak.
Team Lead, US Account Executives
Tyler loves finding and learning about “bugs”. Whether they’re software related bugs or aquatic invertebrates. Don’t forget to ask him about the 27” brown trout he caught.
Customer Success Manager
Uli takes care of our customers and helps them achieve the best results with crowdtesting. In her free time, she enjoys doing handicrafts and playing boardgames.
Office Manager
Ulrike can’t be found without music in the background, while she manages and takes care of all the important things in the office to ensure everybody is happy.
Account Executive
The only thing Zach loves more than finding bugs is chasing powder and sunshine. When he isn't helping companies supercharge their QA look for him on the beach, the mountain, or anywhere outside.

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