Our Team

Meet our team of professionals

  • Frederico photo

    Frederico Knabben


    Coming from Brazil, Frederico moved his focus to web development in his new Italian life. Working on a CMS and not satisfied with the available editing solutions, he created the predecessor of CKEditor, FCKeditor. That was the birth of today's CKSource.

    Frederico holds a Bachelor’s degree in Marketing and Advertising and more than 15 years experience in the IT market as a developer and business man.

    Enjoy the magic you have in your hands

  • Michal photo

    Michal Pik

    VP Sales

    For years, Michal had great success working in managerial sales positions for large corporations like IBM, where he organized the company’s Central and Eastern European sectors, and HP, where he put the company's HP Polish Professional Software Services department on the map.

    As the CEO of CKSource, he finally enjoys working in a non-corporate, stress-free environment. He is a self-proclaimed computer nerd and electronics aficionado. He also loves joyriding on his various motorcycles.

    You only live once, but if you do it right, once is enough

  • Wiktor photo

    Wiktor Walc


    Living in Gdynia (Poland), Wiktor enjoys working with a team of professionals. His main interest is web application security, he's also a PHP enthusiast.

    Wiktor holds a Bachelor’s degree in Computing Science from the University of Gdansk and 8 years experience in software development.

    Make it as simple as possible, but not simpler

  • Piotr photo

    Piotr Koszulinski

    Lead JavaScript Developer

    Piotrek joined CKSource in 2012, just after obtaining Bachelor's degree in Computer Science at Wroclaw University of Technology.

    Since 2008 JavaScript is Piotrek's main interest and topic of many thorough articles on his blog. He deeply believes that there's a future for JavaScript - on both front and back ends. By joining CKEditor's team Piotrek gained a great opportunity to discover the world of large JavaScript projects.

    JavaScript is to Java as Hamster is to Ham

  • Aleksander photo

    Aleksander Nowodzinski

    JavaScript Developer

    Olek lives in Wroclaw, Poland and holds a Bachelor's degree in Information and Communications Technology. He worked as a freelance web developer and designer until he joined CKSource.

    Driven by 5 years of experience, Olek is a huge enthusiast of flexible web solutions and interfaces. His passion is implementing ideas with JavaScript to make life easier.

    But it works on my machine!

  • Kuba photo

    Jakub Swiderski

    QA / Junior Developer

    Kuba lives in Kraków, Poland. He obtained his master's degree in 2009.

    Kuba has three years of experience as a Java and JavaScript developer. He loves working and experimenting with "Java" languages, especially when surrounded by a group of professionals who share the same enthusiasm.

    I undertake and I achieve

  • Robert photo

    Robert Mikolajuk

    PHP Developer

    Living in Biala Podlaska (Poland), Robert enjoys playing with new web technologies as much as riding his motorcycle. Working on web application tries to see the big picture.

    Robert holds a Bachelor's degree in Computing Science, Bachelor's degree in Management and Marketing, MSc in E-business and postgraduate diploma in Linux Administration. Professionally involved in web developing since 2007.

    It's in our hands... It always was...

  • Piotr photo

    Piotr Jasiun

    JavaScript Developer

    Piotr has worked as a developer since the end of high school. He discovered CKEditor (FCKeditor) in 2006 while working as a freelancer PHP Web Developer. After spending a year in CERN he decided to come back to Poland and move to a smaller company. In 2013 he became one of our JavaScript ninjas.

    Whenever he can, Piotr improves his experience developing for Android and mobile devices but his true passion is dancing, sailing and rock climbing.

    Keep it simple, stupid!

  • Maciej photo

    Maciej Golaszewski

    PHP Developer

    Maciej was born in Warsaw where he graduated from Military University of Technology in 2008. He holds an MSc in Electronics.

    After working as an editor he became full-time programmer focusing on developing web applications. He develops websites using mainly PHP5 but also has experience in commercial JEE and Android applications.

    Maciej likes to discover new technologies and trends in web development. He also enjoys riding on his motorcycle and playing poker.

    Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live

  • Pawel

    Pawel Wiaderny

    PHP Developer

    Pawel has a Bachelor’s degree in Computer Science and 9 years experience in software development. His early professional career involved working with C++, C# and Java, but now he mainly focuses on PHP and web development.

    Pawel currently lives in Dęblin, Poland. He’s passionate about coding and new technologies. In his spare time he likes to read fantasy books and browse social news sites.

    Every flight begins with a fall

  • Marek photo

    Marek Lewandowski

    JavaScript Developer

    Since he was a child, Marek was fascinated with programming. He started with the usual PHP, JavaScript, C++ and Python languages then moved onto more exotic ones like UnrealScript and AutoHotkey.

    He loves to automate anything that can be automated. He has 5 years of professional programming experience and currently lives in Warsaw.

    Divide and conquer!

  • Tadeusz

    Tadeusz Piskozub

    JavaScript Developer

    Tadeusz holds a B.Eng. in Computer Science from the Warsaw University of Technology. He has three years of experience as a JavaScript Developer.

    His personal interests revolve around performance art in general. He enjoys the thrill of being on stage and mixing art with technology - be it by creating games, sound or visual effects etc.

    You don't write clean code, you refactor your way to clean code with time and effort.

  • Szymon

    Szymon Cofalik

    JavaScript Developer

    Szymon has been passionate about computers and technology since his early years. After getting interested in website development several years ago, he focused his career on front-end development. Moving to Warsaw and joining CKSource in 2015 is the latest challenge he took up.

    In his spare time, he enjoys playing card games and eating pie.

    Passions and interests define humans

  • Szymon

    Szymon Kups

    JavaScript Developer

    Szymon lives in Poznań, Poland. He graduated from Poznań University of Technology in 2010 with master's degree in Computer Science. His professional career was always connected with his passion for JavaScript and web technologies.

    You can find him jogging around Lake Malta, playing soccer or making silly mobile games that no one wants to play.

    Attitude is a little thing that makes a big difference.

  • Tomasz

    Tomasz Jakut

    JavaScript Developer

    Tomasz is known as a web conservative and JavaScript fanatic. He loves experimenting with new web technologies and playing with weird JavaScript APIs. Hating nearly every framework that is out there allowed him to start development of mythical "The Only Framework", which probably will never be completed. By joining CKSource Team Tomasz is going to work on some real projects.

    In his spare time he tries to be a playwright.

    JavaScript all the things!

  • Krzysztof

    Krzysztof Krzton

    JavaScript Developer

    Krzysztof has been interested in web development since his early years when he started his adventure with HTML, CSS and a popular PHP based game engine. He loves to code during his work hours as well as in his free time, using Javascript as his language of choice. He is also interested in data mining and machine learning.

    Krzysztof holds a Bachelor's degree in Computer Science from the Polish-Japanese Academy of Information Technology. When away from keyboard, he enjoys sports, playing board games and driving go-karts.

    The question is not if you can do it, but when.

  • Marek

    Marek Antoniak

    .NET Developer

    Marek is a C# and C/C++ developer with 6 years of professional experience. His know-how covers very broad range of technologies from programming microcontrollers, through Windows desktop applications to full-stack web development.

    During his free time he enjoys quality beers, playing board games and scuba diving.


  • Anna photo

    Anna Tomanek

    Documentation Manager

    Anna lives near Gliwice, Poland. She is responsible for the development and continuous improvement of the documentation for CKSource products, aimed at all types of users. She also helps with making CKSource's corporate communication more clear.

    Anna holds a M.A. degree in English and has broad experience in working with Computer Science related technical documents.

    Quam bene vivas refert, non quam diu

  • Wojtek photo

    Wojtek Cichon

    Community and Customer Support Manager

    Wojtek comes from a global non-governmental organization where for the past 3 years he was responsible for digital marketing and managing social media. After hours he enjoys spending time with his family and excercising lyrical calisthenics.

    He holds a M.A. degree in English and wrote his thesis on American literature, but that was ages ago.

    When you're in jail, a good friend will be trying to bail you out. A best friend will be in the cell next to you saying, 'Damn, that was fun'.

  • Ewelina photo

    Ewelina Buczynska

    HR Manager

    Ewelina has over 5 years Human Resources experience (3 years in IT). She likes working with people and watching them grow professionally.

    She graduated from Military University of Technology (MSc in HRM) and is completing a degree in Psychology.

    Ewelina joined CKSource in 2013. She lives in the suburbs of Warsaw.

    Whatever you can do or dream, begin it. Boldness has genius, power and magic in it

  • Wioletta photo

    Wioletta Osik

    Administrative Specialist

    Wioletta has lived in Warsaw her entire life. She is currently studying computer science at university and plans to graduate with a degree in web-design. She joined the CKSource team in 2013.

    She manages all office related tasks and the various company activities. In her spare time, Wioletta loves to play around with Photoshop and travel.

    Never, ever give up your dreams

  • Aleksandra

    Aleksandra Bălc

    Finance Manager

    Aleksandra is coming from Lodz, but lives in Warsaw and enjoys it :-) She graduated Faculty of Economic Sciences from the University of Warsaw. At CKSource she is responsible for all financial matters and supporting management in business decision making.

    In her free time Aleksandra likes to cook vegetarian dishes and meet friends offline, but her biggest passion is travelling - Cuba is next!

    If you do something, do it right!

  • Rafal Stalewski photo

    Rafal Stalewski

    Sales Manager

    Rafal brings to CKSource years of experience in selling business solutions to enterprise customers. He worked for mega-vendors like Oracle and Microstrategy but also for smaller companies - which he does enjoy very much. After work, Rafal tries to be a good father and husband (or the other way around).

    He also spends a few hours weekly on his bicycle listening to thrash metal bands as well as plays tennis.

    Do not be afraid of the New … change is everything

  • Adrian Kruszewski photo

    Adrian Kruszewski

    Account Manager

    Adrian moved to Poland from US where he graduated with Bachelor’s degree in Law and Justice from Rowan University. Before joining CKSource he worked as a Sales and Account Manager at an e-commerce company.

    Currently he lives in Warsaw and in his spare time enjoys extreme sports.

    There are no traffic jams along the extra mile

  • Artur Kosla photo

    Artur Kosla

    Account Manager

    Artur has been working in e-commerce and selling IT solutions for a few years now. He has found his psychology degree to be very helpful in building solid business relations. Joining CKSource in 2015, he hopes to enjoy new challenges.

    Artur is a real optimist who appreciates fascinating books, intriguing games and good old whisky. Among friends he is known for his keen sense of humour and harmonious attitude towards life.

    Imagination can take you everywhere

  • You photo

    This could be you

    Future JavaScript Developer

    CKSource is always looking for talented JavaScript developers to add to its ranks in Warsaw, Poland. Visit our Join Us page to see which jobs are currently available.

    Join our team!