Oskar Karpiński

Software services

Solutions matched to the product, process and stage of development

I can deliver a complete solution or take responsibility for a focused module: backend, Android application, web system or integrated website. The scope starts with the problem and expected outcome, not a technology list.

Backend systems and integrations

APIs, business logic, authorization, data synchronization, webhooks and connections to external systems.

  • REST APIs, authorization and roles
  • Integrations, webhooks and synchronization
  • Testing, documentation and deployment
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Android applications

Native Kotlin and Jetpack Compose applications connected to a backend, local data and device capabilities.

  • Kotlin, Jetpack Compose and Material 3
  • Architecture, data and application state
  • API integration, biometrics and testing
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Web applications and websites

Web systems, dashboards, business websites and landing pages with integrations, performance and technical SEO.

  • Dashboards, applications and internal tools
  • Business websites and landing pages
  • Forms, APIs and integrations
  • Performance, accessibility and technical SEO
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