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Sem Postma

Fixing fouc, jank, content reflow, dll/promise/callback hell and anti-patterns is a passion.


Who Are You?


I'm a freelance developer interested in Web, Systems, Game and Full-Stack Development.

What I Do

My primary development skill is coding/programming in languages like C#, Javascript, Typescript, HTML and CSS. I'm also skilled in 2D and 3D art (mostly using Gimp and Blender).

Skill Chart


Development Interests

  • Software Development Methodologies like AOP, DDD, AOP, TDD, Agile, SDM, UP
  • Concurrency
  • Parallelism
  • Reactive Programming
  • JAM Stack
  • REST
  • PWA's
  • SPA's
  • Design Patterns ( Daily Design Patterns)

Programming Interests

  • C/C++
  • Assembly
  • Software Development Methodologies
  • Hybrid App Development
  • Ionic 2+
  • (ASP) .NET Core
  • Functional programming

Other Personal Interests

  • The Blockchain
  • ML

Web Development

My Main focus when I'm writing a web-app, is to make the web-app responsive, learn about new tools and trying to use new techniques. SPA's, Build tools and other front-end tools are things i would like to learn more about. I mostly end up using some sort of combination of Node js tools to build the front-end of a web-app.


Contact Me?

I'd love to hear from you.

Mail Me