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Black and white portrait of Šimon Leška smiling in a black T-shirt

UX/UI designer in Prague

Hi! I'm Šimon. I make complex products simple to use.

Nine years of UX behind five industry awards, including an energy app used by 78,000 people.

I design mobile apps, websites and e-commerce for consumers and businesses, covering UX from research and prototyping to user testing and launch.

Open to full-time roles and freelance projects, Prague or remote

Featured clients I worked with

  • innogy
  • Signal Festival
  • VZP
  • Printscreen.cz
  • Korado
  • Wunderman Thompson
  • ŠKODA Auto
  • Amazon
  • Siemens
  • Nasdaq
  • Nescafé
  • Česká spořitelna
  • Komerční banka
  • Mendel University in Brno
  • UNION Insurance

Selected clients. More projects on request.

Awards won

Recognised by the industry.

Five WebTop100 and Effie awards for websites, e-commerce and campaigns I worked on.

  • 1st

    Online tool of the year

    Printscreen.cz · WebTop100 2019

    My role: UX designer

    WebTop100
  • 3rd

    E-commerce project of the year

    Printscreen.cz · WebTop100 2021

    My role: UX designer

    WebTop100
  • 1st

    Best company website

    Leros.cz · WebTop100 2019

    My role: UX designer

    WebTop100
  • 2nd

    Microsite of the year

    innosvět · WebTop100 2018

    My role: UX lead

    WebTop100
  • 3rd

    Other services

    innosvět · Effie Awards 2018

    My role: UX lead

    Effie Awards Czech Republic

Selected work

Projects with real results.

A closer look at how I research, design and test, one project at a time.

Since 2022 I've worked on big projects from number of very known clients under strict NDA's, and I can walk you through it in an interview.

What I believe in

Principles I design by.

Six ideas I keep coming back to, each one backed by a project.

  1. 01

    A happy user means good business.

    On innogy.cz, an energy calculator built around customer needs became the heart of the conversion journey.

    Redesign of innogy.cz
  2. 02

    The best design is contextual.

    Printscreen.cz works on a tram as well as at a desk, because every step shows only the essentials.

    Printscreen.cz
  3. 03

    Real life is full of edge cases.

    In the VZP campaign, standing 100 metres from a spot gets you a nudge to the nearest one, not an error.

    VZP walking campaign
  4. 04

    Prototype it, then test it.

    The innosvět navigation and dashboard were refined through prototypes and usability tests before release.

    innosvět app
  5. 05

    Research comes before pixels.

    Signal Festival AR started with research and benchmarking, then went through paper sketches and layout tests.

    Signal Festival AR
  6. 06

    Design systems are my friends.

    The innogy.cz system of 50+ templates and components went on to power Innogy24 and kariera.innogy.cz too.

    Redesign of innogy.cz
Portrait of Šimon Leška laughing, sitting against a light wall

About me

Behind every project is a lot of thinking, testing and listening.

Get to know how I work, what I bring to a team and what keeps me inspired outside of UX.

More about me