About us

From humble beginnings at the Institute of Informatics to one-stop shop in online world

How did one idea of assistant professors of informatics and artificial intelligence become a well-established digital agency of marketing, software and UI/UX services with rich history?

How did ui42 originate

How did ui42 originate

  • 1997

    ui42 was founded in 1997 by three assistant professors of computer science and artificial intelligence Dalibor Jakuš, Martin Krupa and Róbert Mráz.

    It was at the Faculty of Mathematics and Physics at the Institute of Informatics in office number 42. That is why we are called ui42.

    We founded first job portal in Slovakia profesia.sk

  • 1998

    One of our first clients was Worldcom

    We lived in the family house at Pod Vinicami street

  • 1999

    We created our own content management system BUXUS, which was the first of its kind in Slovakia and now it operates more than 150 websites.

  • 2000

    We have programmed internal system TASKMAN for a perfect overview of tasks and finances.



  • 2002

    We moved to Hrdličková street.

    We created a comprehensive online solution for slovart.sk.

  • 2004

    We went to the Invex computer fair with BUXUS.

  • 2005

    We created a website and design manual for ESET.

  • 2006

    We started educating a new generation at Faculty of Mathematics, Physics and Informatics in Bratislava and we continue to teach to this day.

  • 2007

    First usability testing.

  • 2008

    We tested the usability of the main page of T-Mobile.

    We created new KOMPOT and PNEUCOM websites.

  • 2009

    We were among the first agencies in Slovakia to focus on online performance marketing.


  • 2010

    We moved to Haydnova street, where we are until this day.

    We built our own UX lab, being the first one in Slovakia.

  • 2011

    We organized the first World Usability Day in Slovakia.

  • 2012

    The pilulka24.sk, an online pharmacy project, was created in ui42.

  • 2013

    We designed and tested new internet banking for VÚB banka.

  • 2014

    We tested the usability of the website for Tatra Banka.

  • 2015

    We co-organized the MastersGate conference.

  • 2016

    We co-founded the Slovak UX Association to support UX design community in Slovakia.

  • 2017

    We tested the usability of the web and mobile banking of Slovenská sporiteľňa (ERSTE Group).

    We collaborated on the creation of a uniform design manual for electronic services in Slovakia.

  • 2018

    Martin Krupa, co-founder of ui42, wrote a successful book E-shop od nápadu po úspech (E-shop from idea to success).

  • 2019

    We tested the website usability of mobile service provider O2.



  • 2020

    We have been working on artificial intelligence since 2020. So far, we've programmed a chatbot and a recommendation tool that increases the performance of e-shops by recommending relevant products.

  • 2021

    We transformed MasterGate into an online conference Website Story, which tells the stories of successful websites.

    We celebrated 100th usability testing.

  • 2022

    ui42 is 25 years old!

  • 2023

    We have expanded to all departments and are working on new client projects. Our number of employees has exceeded 60.

  • 2024

    • We celebrated our 27th birthday with a total of more than 80 colleagues
    • Daniela Marušková has joined the position of CMO at ui42 Daniela Marušková
    • We won the Golden Digital Pie for collaboration with Be Lenka - How we put the world in barefoot shoes
    • We changed the overall visual identity of the ui42 brand
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