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Mateusz Waszkiewicz

I once heard that 'Your team is as strong as its weakest link'. Working with my teammates at Codetain I thought to myself Man, do we have any weak link here at all? I like to think of us as a Team for Special Assignments. After 5 years in the tech industry, I ended up at Codetain. Thank goodness! I finally feel at home. Outside Codetain, I’m a football fan and player. I do a lot of running — training for mountain trail races. But I also like spending lazy evenings with video games.


My profile

Technology stack


ASP.NET Core / DevExpress / Windows Forms


Node.js / .NET Core / .NET Framework / TypeScript


PostgreSQL / MS SQL / MySQL / SQLite / MongoDB / Redis


Sequelize / TypeORM / EF Core / ESLint / Unit testing / Jest / Mocha / Clean code / Refactoring / Design patterns / NPM / Nuget / RabbitMQ / Git / ELK stack / Docker

My activity

Github contributions


My activity

Blog posts

How to avoid problems with deprecated npm packages?

Recently I found some very interesting articles related to popular npm packages (request and axios - both are simple HTTP clients) and how they are dying.

Level up with TypeScript

Some time ago we discussed with the team how we can improve the quality of code in our services and what we can do to increase our skills. So, from to time, we had a situation that someone uses a...

Node.js 12 is coming!

Those are good times for Node.js Developers. In a few days, Node.js 12 (codenamed Erbium) will be going into LTS (Long Term Support) and will be maintained until April 2022. A lot of improvements...

End-to-end from the first step for as long as you need

As a reliable software company we’re focused on delivering the best quality IT services. However, we’ve discovered that programming skills give us a very particular opportunity...

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