Hi, I'm Jakub

A full-stack developer who turns ideas into polished apps

I craft fast, thoughtful web solutions — from .NET on the backend to React on the front. Take a look around and see what I'm building.

What do I do?My BIO

Building reliable, user-focused software with modern technologies. Always learning, always improving.

My picture.
Hi, I'm

Jakub Stapiński

<Fullstack developer />

I’m Jakub Stapiński, an Applied Computer Science graduate with hands-on experience in developing web applications, backend systems, and database-driven solutions. I specialize in modern technologies like Next.js, React.js, and .NET, and have worked on custom software, e-commerce platforms, and CMS projects. I’m passionate about building intuitive, user-friendly interfaces while ensuring performance, reliability, and scalability. Throughout my internships and personal projects, I’ve strengthened my full-stack skills, translating real-world requirements into efficient technical solutions. I thrive in agile teams, enjoy solving complex problems, and am committed to continuous learning and creating software that makes an impact.

Available for work

What do I use?Technologies

Main

Frontend

Backend

Hover over a card to explore

Main

Languages

JavaScript

JavaScript

TypeScript

TypeScript

C#

C#

Tools

Visual Studio Code

Visual Studio Code

Visual Studio

Visual Studio

Git

Git

GitHub

GitHub

Docker

Docker

Postman

Postman

Figma

Figma

NPM

NPM

Vite

Vite

Webpack

Webpack

Frontend

Technologies

React.js

React.js

Next.js

Next.js

HTML5

HTML5

CSS3

CSS3

Sass/SCSS

Sass/SCSS

Tailwind CSS

Tailwind CSS

Concepts

  • Responsive Web Design
  • SEO Optimization
  • Semantic HTML
  • Accessibility (A11y)
  • Cross-browser Compatibility

Backend

Technologies

.NET / ASP.NET Core

.NET / ASP.NET Core

Node.js

Node.js

Express.js

Express.js

MySQL

MySQL

PostgreSQL

PostgreSQL

Microsoft SQL Server

Microsoft SQL Server

MongoDB

MongoDB

Concepts

  • RESTful APIs
  • MVC, MVVM Patterns
  • Microservices
  • SOLID Principles
  • Clean Architecture (Design Patters)
  • WebSockets
  • Caching Strategies
PROJECTS
01 - 03

MYPROJECTS

Browse through my projects. Use filters to find technologies that interest you.
Czytnik
Completed👥 4🌐

CZYTNIK

Mar 2023 - Jun 2023

A modular online bookstore focused on accessibility, performance and progressive enhancement.

C#ASP.NETEF CoreRazorPostgreSQLMS SQL
GeoPuzzle
In Progress🌐

GEOPUZZLE

Jan 2024 - Ongoing

Backend for a location-based puzzle game — REST API with real-time WebSocket game sessions, Google OAuth, MongoDB and geographic scoring via the Haversine formula.

Node.jsTSExpressMongoDBWSOAuthJWT
Poltorque
In Progress💻

POLTORQUE

Jul 2023 - Ongoing

Professional software development at Poltorque: service applications communicating with BMS keys, e-commerce migration, office automation tools and certificate generation.

C#.NETJSModbusBT

Interested in working together?

Let's build something amazing together

Looking for a developer for your project? I'd love to hear about your ideas and find the best solution.

Quick response
Friendly communication
Professional approach
Jakub Stapiński - Portfolio