My handsome face
Available for new challenges

Shaping ideas into interactive realities

I build digital solutions that not only work but feel right. With focus on mobile development and AI engineering, I turn complexity into clarity - one commit at a time.

Real-World Results

Featured Projects

See how I transformed concepts into engaging digital experiences.

diagno6.2026

diagno6.


  • Educational app helping users organize and understand lab results to prepare for medical consultations.
  • Built with React Native, Expo, and EAS for a streamlined mobile development lifecycle.
  • Delivers a seamless, fully optimized native experience across both iOS and Android.
Screen 1Screen 2Screen 3
Jacek Kozłowski2025

CopColorCode


  • A system analyzing USA crime statistics from multiple angles to actively support police workflows.
  • Developed using React, Express.js, and MySQL, with the entire infrastructure containerized via Docker.
  • Features complex data integration by concurrently consuming and syncing both REST and SOAP APIs.
CopColorCode
Jacek Kozłowski2023

Hotel Gosling


  • Responsive hotel booking interface built from scratch using HTML5, CSS3, Bootstrap, and vanilla JS.
  • Features a robust reservation form with custom validation and Local Storage for data management.
  • Utilizes the Fetch API for asynchronous content loading to dynamically render server data.
placeholderHotel Gosling - widok 1Hotel Gosling - widok 2Hotel Gosling - widok 3
Performant
Intuitive
Secure
Interactive
Scalable
User friendly
Responsive
Maintainable
Lightning-fast
Usable
Reliable
Performant
Intuitive
Secure
Interactive
Scalable
User friendly
Responsive
Maintainable
Lightning-fast
Usable
Reliable

My Journey

Professional Experience

A look at my commercial experience, projects I've contributed to, and the skills I've developed along the way.

diagno6.
Software Developer
diagno6. Jul 2025 – Present

Single-handedly building a cross-platform mobile application available on both iOS and Android using React Native.

  • Implementing screens, features, and integrating user management with Firebase.
  • Preparing test builds for TestFlight and production releases for Google Play and App Store.
  • Tracking errors with PostHog and managing content in Strapi CMS using GraphQL.
Transition Technologies MS
Full Stack Developer (Intern)
Transition Technologies MS Jul 2025 · 1 mo

Developing web application using .NET (C#) on the backend and Angular on the frontend.

  • Developing and enhancing features across the full stack.
  • Working within a Scrum framework (stand-ups, planning, demos).
  • Collaborating with experienced developers to improve software workflows.
Your Company
Your Next Developer?
Your Company Near Future

Are you looking for a dedicated developer eager to deliver high-quality software and tackle new challenges?

  • Bringing fresh ideas and strong technical skills to your projects.
  • Collaborating with your team to build scalable applications.
  • Continuously learning and adapting to your tech stack.
diagno6.
Software Developer
diagno6. Jul 2025 – Present

Single-handedly building a cross-platform mobile application available on both iOS and Android using React Native.

  • Implementing screens, features, and integrating user management with Firebase.
  • Preparing test builds for TestFlight and production releases for Google Play and App Store.
  • Tracking errors with PostHog and managing content in Strapi CMS using GraphQL.
Transition Technologies MS
Full Stack Developer (Intern)
Transition Technologies MS Jul 2025 · 1 mo

Developing web application using .NET (C#) on the backend and Angular on the frontend.

  • Developing and enhancing features across the full stack.
  • Working within a Scrum framework (stand-ups, planning, demos).
  • Collaborating with experienced developers to improve software workflows.
Your Company
Your Next Developer?
Your Company Near Future

Are you looking for a dedicated developer eager to deliver high-quality software and tackle new challenges?

  • Bringing fresh ideas and strong technical skills to your projects.
  • Collaborating with your team to build scalable applications.
  • Continuously learning and adapting to your tech stack.

About me

A Glimpse Into My World

Learn more about who I am, what I do and what inspires me

Who am I?

• Engineer – 4th-year Computer Science student.

laptop memoji

My Toolbox

Explore the technologies and tools I use to craft exceptional digital experiences.

Javascript
React
Typescript
Docker
React Native
Github & Git
Flutter
Python
Jupyter
Expo
PostgreSQL
Next.js
Javascript
React
Typescript
Docker
React Native
Github & Git
Flutter
Python
Jupyter
Expo
PostgreSQL
Next.js
Javascript
React
Typescript
Docker
React Native
Github & Git
Flutter
Python
Jupyter
Expo
PostgreSQL
Next.js
Javascript
React
Typescript
Docker
React Native
Github & Git
Flutter
Python
Jupyter
Expo
PostgreSQL
Next.js

Beyond the code

Explore my interests and hobbies beyond the digital realm.

Dancing🕺
Movies🍿
Fitness🏋️‍♂️
Music🎵
Football⚽️
Electronics🔋
Style😎
map
smiling memoji

Let's create something amazing together

Ready to turn your vision into reality? I'm here to collaborate and create something extraordinary. Let's discuss how we can bring your ideas to life.