Hi, my name is Sebastian
I'm a Software Engineer

Let's start a new project together

About Me

Hello! My name is Sebastian Mysakowski 👋. I’m a Poland-based Senior Software Engineer. Currently I’m working on projects for clients all over the world.

I have a diverse set of skills, ranging from design, to JavaScript, React all the way to mobile development in React Native.

Feel free to check my latest articles or workshops and contact me at Linkedin.

Projects & Initiatives

Sep 2021 - now

Sii Poland

Senior Software Engineer

With 6 000 specialists, Sii is the largest technology consulting, digital transformation, BPO and engineering services vendor in Poland.

Technologies I am using on a daily basis:

AWS, JavaScript, TypeScript, React.js, JestJS, Enzyme

See Live

Jan 2020 - Aug 2021


Frontend Engineer / Tech Leader

Lingaro is a trusted technology solutions partner to Fortune Global 500 companies. We help enterprises gain a competitive advantage through business intelligence and analytics that are better, faster, and smarter.

Technologies I was using to fulfil my tasks:

JavaScript, TypeScript, React.js, React-Native, Node.js, Redux, JestJS, Cypress, Detox.js

See LiveSource Code

Oct 2020 - now

Helion S.A.


React Native. Kurs video. Zostań programistą aplikacji mobilnych

ISBN: 978-83-283-6589-6

See Live

Jul 2020 - now


News Presenter

From Devs, for Devs

You might already know DevSpresso hosted by Juliusz Jakubowski and Piotr Zaborowski. This tech show is about new technology trends and news at JavaScript world.

See Live

Jan 2020 - now


React & React Native Mentor

DevMeeting is a mix of hackaton and workshop during which participants create a simple but completed application. Thanks to the practical approach to workshop in one day they learn a new technology from scratch or expand their knowledge in the already known one.

Currently I led workshops about:

  • How to React?
  • React Hooks
  • From Zero to Hero - The React Native Workshops
See Live

Aug 2019 - Oct 2020


React Native Developer

MediShift is an innovative recruitment tool in the medical industry. We create a website and mobile applications for Android and iOS.

Technologies I was using on a daily basis:

TypeScript, React.js, React Native, Redux, JestJS, Cypress

See Live

Jan 2019 - Jul 2019


Junior React Developer

Aida is decision support software for doctors with a storage management system for hospitals and blood banks creates a complete ecosystem that leverages the power of AI to make blood flow better.

Technologies I am using to fulfil my tasks:

JavaScript, Java, React.js, Redux, JestJS, Cypress

See Live


Would you like to work with me? Awesome!

Let's Talk