We are test IO

We help businesses to ship better apps with fewer bugs.
Alexander D.
Alexander D.
Product Manager
Alex is a designer by day and a musician by night. When he's not engaged with UX-, UI-design, he's releasing techno tracks.
Alexander N.
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.
SDR Team Lead
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.
Alexandra
Alexandra
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.
Amanda
SDR Team Lead
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.
Celina
Celina
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.
Chris
Senior Marketing Manager
Chris is our marketing genius who makes sure that test IO is visible across the web. When he’s not doing marketing, he’s traveling through Europe in his VW van.
Claudia
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.
Daniela
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.
Dennis
Head of Sales
Dennis is a gentleman through and through who’s known for organizing fabulous test IO company trips.
Didem
Data Scientist
Didem loves learning everything relating to the brain, which is a fitting endeavour since she handles all the brainy stuff around here.
Evgeniya
Ephraim
Key Account Manager
Ephraim is a polygot whose international experience is priceless when it comes to managing accounts. Also, he loves dogs.
Evgeniya
Evgeniya
Community Manager
Evgeniya is passionate about languages and communication, that's why she makes sure that all our testers’ needs are taken care of.
Fabien
Sales Engineer
When Fabien isn't fighting in the octagon, he writes code and cooks with the self-confidence that every Frenchman has.
Jan
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.
Jiayi
Software Engineer
Jiayi is a developer capable of coding but incapable of writing a proper bio.
John
Content Marketer
John ensures that software teams small and large have the opportunity to see what test IO can do for them. In his free time, he enjoys workshopping nutrition topics and catching up on the latest Netflix Original.
Jörg
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.
Joseph
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.
Julian
Julian
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.
Justin
Justin
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.
Lucas
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.
Magdalena
Software Quality Analyst
When Magdalena isn't making calls and booking demos, she is petting cats with a redbull-induced enthusiasm.
Manh
Software Quality Analyst
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.
Martin
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.
Maryna
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.
Matthew
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.
Matt
Software Quality Analyst
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.
Max
Head of Sales, US
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.
Michael
Michael
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
Natasha
Key Account Manager
A woman whose wit is only matched by her warmth, Natasha makes sure that clients are well taken care of.
Neda
Development Intern
Neda loves spreading smiles and is always trying to self-improve by learning and trying new stuff.
Philip
CEO
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.
Rachel
Account Executive
Rachel likes to grow things- first tackling the SDR team and now the customer base. She also likes skiing (a lot) and spending as little time in the city as possible.
Ryan
Software Quality Analyst
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.
Sevda
Data Analyst
Sevda likes to play with key performance metrics and her clarinet just because both let her tell stories.
Simon
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.
Stefan
Customer Success Manager
Stefan has a lot of energy and really enjoys communicating with customers, that's why Customer Success is his ideal role. He is really passionate about technology.
Stephen
Stephen
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.
Susan
Customer Success Team Lead, US
Susan loves customers and cats. In her leisure time, she enjoys dreaming of her next travel destination and coffee.
Svetlana
Svetlana
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?
Thomas
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.
Tilman
Software & DevOps Engineer
Tilman likes to read about politics, tech, and an occasional poem. His best ideas come in the midst of silent walks.
Tina
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.
Tyler
Account Executive
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.
Uliana
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.
Ulrike
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.
Valerie
Software Quality Analyst
Valerie likes to cook, do yoga and travel around South America. When she isn't getting lost in Brazilian favelas or rescuing Turkish street dogs, she helps the German SDR team.
Zach
Software Quality Analyst
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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