Technologies
I have worked with

• React
  React

  Early adopter. Large-scale projects. Some OSS contributions. Used in Bachelor’s and Master’s theses.
• TypeScript
  TypeScript

  Entire apps and migrations from legacy codebases.
• GraphQL
  GraphQL

  Met Lee Byron, the maker himself, at a London conference in 2017. Riding the wave ever since.
• SASS
  SASS

  With all the bells and whistles: Large-scale Design Frameworks, Optimizations and Post-Processing Magic. Who is still writing vanilla CSS these days?
• Node.js
  Node.js

  From dev tooling to fully featured servers.
• Postgres
  Postgres

  Advanced understanding of RDB principles. I usually prefer thin query builders over ORM.
• Swift
  Swift

  Zero to hero in a few months. Went into the depths of manual memory management to write a high-performant React-inspired UI framework.
• UIKit
  UIKit

  Studied nearly every single WWDC video in the archive to find workarounds for exotic bugs. Includes some other Apple Frameworks.
• PHP
  PHP

  In chronological order: vanilla, WordPress, Yii, Laravel. When I was 14, I wrote a CMS from scratch that is not too shabby in hindsight.
• Elixir
  Elixir

  Some interesting side projects in the oven.
• Elm
  Elm

  Wrote parts of the Velvet prototype in Elm. It didn't work out, but seriously sharpened my knives as a programmer.
• •••
  •••

  Obvious: Git, Sketch, Framer, Adobe Apps
  Funky: SuperCollider, Lisp
  Services: AWS, Sentry, Mailchimp, Mailgun
  … and lots more