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Optimized developer onboarding that delivers value to 14 million users

New developer portal was launched, speeding up the onboarding process for new customers.

10-minute setup
47% faster integration
14M users


Dateio, an innovative Czech fintech startup, operates Tapix, a powerful, data-driven API product. This unique product is designed for financial institutions across CEE. Tapix excels in delivering precise information, including the address and distinct logo from which the banks' customers have purchased.

Key Highlights

  • User persona analysis 
  • Information structure analysis 
  • UX & structure design 
  • Technical writing 
  • API review

We were looking for external input on how to design a developer portal well. DX Heroes helped us improve the overall onboarding experience from start to finish with focus on product usability.

ivan dovica.jpeg
Ivan Dovica
COO, Dateio


We faced the challenge of understanding our target persona to effectively communicate TapiX's benefits, shifting focus to developing vital developer touchpoints. Our approach involved analyzing key user personas, particularly technical product managers and developers. We then explored Tapix's functionality, focusing on the value of each API endpoint, aiding our tech writing phase. Simultaneously, our UX team designed a custom, intuitive user interface with an interactive sandbox, enhancing user engagement.


We crafted a custom solution designed to streamline customer interactions, offering comprehensive insights for both new and existing customers. Our primary focus was on creating easily comprehensible guides, supported by well-structured APIs and a smooth user experience, leading to 15% support costs.

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