I design apps and the systems behind them.

• Product discovery

  Understanding the problem and deciding what to build.

• Web & mobile app design

  Flows, screens and interactions, from idea to release.

• Design systems

  Reusable components that keep products consistent and scalable.

• Prototyping in code

  Testing ideas with interactive prototypes, built with AI.

• Working with developers

  Clear documentation and close collaboration.

• 

  Building custom tools

  I build small tools to automate repetitive work and make the design process a little faster.

• Swap · A

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  Bal: 2.41

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  1 ETH = 0.04998 BTC · Slippage 3% · Fee —

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  You pay

  1ETH

  $3,224.80Balance 2.41 Max

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  0.04998BTC

  $3,223.10

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  1 ETH = 0.04998 BTC

  Network fee

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  Slippage

  0.5%

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  JP

  JP

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  Jaceknow

  JP

  JP

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  Jaceknow

  Exploring different directions

  I use AI to try different layouts and interactions, then compare what works before taking a direction further.

• Prototyping with AI

  I build complex flows as working code with real states, not static click-throughs.

Recommendations

• 

  “Jacek goes beyond introducing new ideas, actively improving products and enhancing user value. His design approach, rooted in extensive user research and business insight, ensures projects impress aesthetically and align effectively with business objectives.”

• 

  “Delighted to recommend Jacek, an outstanding professional and enthusiast. His design prowess shapes aesthetic, functional solutions. Crucially, he builds lasting business relationships, prioritizing client needs and expectations.”