---
title: "Tomasz Misiukiewicz"
description: "Tomasz Misiukiewicz is a React Native developer who has worked on projects from early startups to large corporations. Meet the Callstack engineering team."
url: https://www.callstack.com/team/tomasz-misiukiewicz
updated: 2026-10-22T14:18:28.153Z
---

# Tomasz Misiukiewicz

Tomasz Misiukiewicz is a React Native developer who has worked on projects from early startups to large corporations. Meet the Callstack engineering team.

_Software Engineer_

React Native developer with a strong background in web development, experienced in projects ranging from startups to large corporations. Focused on writing clean, readable code while working with React, React Native, and Node.js. Passionate about sports, especially football and bike riding.

[LinkedIn](https://www.linkedin.com/in/tomasz-misiukiewicz/) · [X](https://twitter.com/TMisiukiewicz) · [GitHub](https://github.com/TMisiukiewicz)

## What I’ve been shipping

- [How to Upgrade React Native in a Brownfield Application](https://www.callstack.com/blog/how-to-upgrade-react-native-in-a-brownfield-application) (Article, 11/28/2024): Learn how to upgrade React Native in a brownfield app with practical tips and solutions. Ideal for complex app migrations from React Native 0.71 to 0.76.
- [How to Integrate React Native With an Existing App](https://www.callstack.com/blog/how-to-integrate-react-native-with-an-existing-app) (Article, 11/25/2024): Learn how to integrate React Native into an existing mobile app with this step-by-step guide, using the Mastodon app as a testing ground.
- [Streamline Native Dependencies for Faster Time-to-Interactive](https://www.callstack.com/blog/streamline-native-dependencies-for-faster-time-to-interactive) (Article, 3/29/2024): Learn how to optimize React Native app performance by managing native dependencies effectively. Discover tools to identify and remove unused dependencies.
- [Consistently Improve App Performance With DMAIC and Reassure](https://www.callstack.com/blog/consistently-improve-app-performance-with-dmaic-and-reassure) (Article, 3/11/2024): Learn how to keep your React Native app performant as it grows by following DMAIC process and monitoring performance regression with tools like Reassure.
- [Stack Overflow Developer Survey 2023](https://www.callstack.com/podcasts/stack-overflow-developer-survey-2023) (Podcast, 7/12/2023): The results of Stack Overflow Developer Survey 2023 are in! Tune in to learn which findings we found the most surprising and exciting.
- [Ship OTA (Over-The-Air) When in an Emergency](https://www.callstack.com/blog/ship-over-the-air-when-in-an-emergency) (Article, 5/14/2022): Shipping Over-The-Air may save your app from a lot of trouble. Find out why and how you can make your application OTA-ready.
- [Run Tests for Key Pieces of Your App](https://www.callstack.com/blog/run-tests-for-key-pieces-of-your-app) (Article, 5/12/2022): It’s crucial to check if everything is up and running in your new app. Focus on key pieces and run tests. Find out more about testing apps.

JOIN US

## Build the AI-native React Native future

Work with engineers who contribute to the ecosystem and turn new technology into real products. At Callstack, AI is part of how we build, learn, and ship software.

[Join Us](https://www.callstack.com/careers)

[About us](https://www.callstack.com/about-us)