KNKuba Nowacki

About

I'm Kuba, a software engineer who builds and ships iOS and Android apps. React Native and Expo are my daily tools, with NestJS behind them when an app needs its own backend.

I'm shipping five of my own apps under KN Labs, one on the App Store and two on TestFlight, and I take on client app projects from first commit to the App Store and Google Play.

Before mobile I spent years on the web with TypeScript, React, Next.js and Go. That background is why my apps come with solid APIs and clean architecture. I'm also studying Computer Science.

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Based in
Poland, CET
Focus
iOS & Android apps
Stack
React Native, Expo, NestJS
Available
New app projects, Q4 2026

Experience

  • Mar 2025 — Now

    Freelance

    Mobile app engineer

    • Building and shipping my own iOS and Android apps with React Native and Expo.
    • Taking on client app projects, from first commit to store release.

  • Nov 2024 — Mar 2025

    Brainhub

    Fullstack developer

    • Delivered features across the stack on client projects, in type-safe, maintainable code.

  • Mar 2024 — Nov 2024

    Freelance

    Software engineer

    • Built and shipped production web applications with React, Next.js and Node.js.

  • Oct 2021 — Dec 2021

    LT2 Limited

    Intern

    • Wrote backend tooling and scripts in Python at a med tech company.

  • Jun 2021 — Sep 2021

    LT2 Limited

    Developer

    • Built and maintained React frontends.

  • May 2021 — Jul 2021

    LT2 Limited

    Intern

    • Developed web interfaces with React and TypeScript.

Stack

Mobile

  • React Native
  • Expo
  • TypeScript

Backend

  • NestJS
  • Express
  • Go
  • PostgreSQL
  • Prisma

Frontend

  • React
  • Next.js
  • Tailwind CSS
  • REST / tRPC

Tooling

  • Git / GitHub
  • Docker
  • CI/CD
  • Zod
  • Figma

Background

  • 2022 — Now

    University of Technology

    B.Eng. Computer Science

    • Studying software engineering, algorithms and distributed systems.