Oskar Karpiński

Web systems and websites that support processes and the business offer

I build web applications, administration dashboards, internal tools and fast business websites. I combine clear interfaces with backend services, content, performance, SEO and the integrations the project needs.

Scope

I can deliver a complete application, a product website or a focused scope — from interface and content to APIs, SEO and deployment.

01KRYTERIA

When this service is a good fit

A web system should shorten the user's work and reduce manual data transfer instead of adding another operational layer.

02ZAKRES

What the work can include

The scope may cover the frontend only or the complete solution. The key is to keep the interface, permissions and data model consistent.

  1. 01

    Analysis of users, roles and processes supported by the application.

  2. 02

    View, navigation and state-management architecture.

  3. 03

    A responsive interface built with React and TypeScript.

  4. 04

    Forms, validation, tables, filtering and error handling.

  5. 05

    Authentication, roles and access control for functions and data.

  6. 06

    Integration with REST APIs and external services.

  7. 07

    Testing of critical flows and accessibility improvements.

  8. 08

    Environment configuration and deployment preparation.

03PRZYKŁADY

Example solutions

An administration dashboard for content, users or order management.

An internal system supporting a team's operational process.

A customer portal with accounts, documents and activity history.

A frontend for an existing backend or set of services.

An application collecting data through complex forms and integrations.

04PROCES

How the collaboration works

I start with the user's most important tasks. Wireframes and components follow the process rather than defining it prematurely.

  1. Users and workflows

    We define roles, data, frequent operations and the parts of the current process that create unnecessary work or errors.

  2. Interface architecture

    I design the view structure, navigation, form states and contracts with the backend.

  3. Feature-based implementation

    I deliver complete flows, connect them with the API and make them available for regular testing.

  4. Refinement and deployment

    I verify responsiveness, accessibility, error scenarios and the configuration required to run the system.

05TECHNOLOGIE

Web application stack

The choice between a classic frontend, Astro, server rendering and static generation depends on the data, SEO, authorization and deployment requirements.

Interface

  • TypeScript
  • React
  • Next.js
  • Tailwind CSS

Application features

  • forms and validation
  • authentication and roles
  • REST API

Rendering and quality

  • Astro
  • SSR
  • SSG
  • testing

Deployment

  • Docker
  • CI/CD

07Related services

Need a web application or website?

Describe the users, offer and most important objective. I will help translate them into a practical implementation scope.