Webdesign for music band. Illustrations by Libor Drobný. webdesign

Webdesign for music band. Illustrations by Libor Drobný.

About Jednadvacet

Ondřej Sedláček a.k.a. Jednadvacet

You have just joined not numerous group of visitors of my new portfolio of graphic artworks, webdesign and other more or less life-important activities and results of my Earth-being. No matter if you are a robot, a spambot, a stalker, a single web browser or potentional candidate of my modest service, you could find few pieces of information about my work at since 2001. My name is Ondřej Sedláček, nicknamed Jednadvacet (Twentyone).

Born in 1979, living in Litomysl, Czech Republic. Since 1998 I have made quite a lot of websites of all kinds, nowadays I specialize primarily in webdesign and graphics instead of web programming that I do in cooperation with Eastburger company providing complete website service. My clients are private subjects, commercial subjects and companies providing complex web services from all parts of the Czech Republic. I also have experience with clients from EU and USA.

Technologies: Adobe Photoshop, Illustrator, Flash, Corel Draw, CSS, HTML, web standards and practical experience with PHP, SQL, DOM, JavaScript.


  • 1998 – 2001                  Bonton promotion a.s., Prague, Czech Republic
  • 1998 – 2007        , a.s., Prague, Czech Republic
  • 2003 –                            IDC-softwarehouse, s.r.o., Prague, Czech Republic
  • 2004 –                            Eastburger, Litomyšl, Czech Republic
  • 2004 – 2007                  LGtrade a.s., Prague, Czech Republic
  • 2006 – 2009         s.r.o., Uherské Hradiště, Czech Republic
  • 2006 – 2010                  Multimedia Atelier s.r.o., Prague, Czech Republic
  • 2007                                Websitemaster a.s., Prague, Czech Republic
  • 2007 –                             PCS Software s.r.o., Prague, Czech Republic


Other cooperation:

LBtech a.s., Litomyšl, CZ; GWA s.r.o., Litomyšl, CZ; Fatran-Travel, Žilina, Slovakia; State Environmental Fund of the Czech Republic, Prague, CZ; Visual360, Litomyšl, CZ; 22 Consulting, United Kingdom