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@Vlix

Felix Paulusma

Vlix
Leiden, The Netherlands

Hi, my name is Felix.

Who am I? πŸ‘†

I am a self-taught programmer, who started as a linguist interested in Natural Language Processing, but somehow stumbled into the pure functional paradigm. My focus right now is on Haskell and its ecosystem. After 10 years of industry experience (mostly as Lead Developer) and almost as many years participating in open source projects on the side, I feel that getting sponsorships to focus my effort on OSS would help the community and companies relying on the Haskell ecosystem the most.

Prior work πŸ“š

Outside of my current closed source work, I maintain the safe-json and http-types libraries on my own and am co-maintainer of the password and wai / warp libraries (and the related packages).

Motivation βš’

I'd like to do more for the Haskell ecosystem and open source projects in general, so that is why I'm open to sponsorships at the moment.


Things that would be high on my list:

  • working on making the breakages new GHC releases introduce more tolerable;
  • finding ways to alleviate the transition of projects to newer GHC releases;
  • helping libraries stay on Stack LTSes when dependencies get updated;
  • supporting important libraries/packages with their issues;

Featured work

  1. yesodweb/wai

    Haskell Web Application Interface

    Haskell 834
  2. cdepillabout/password

    datatypes and functions for easily working with passwords in Haskell

    Haskell 55
  3. Vlix/safe-json

    Automatic versioning of JSON formats for Haskell data types (with backwards compatibility)

    Haskell 27
  4. Vlix/http-types

    Generic HTTP types for Haskell (for both client and server code)

    Haskell 1

Select a tier

$ one time

You'll receive any rewards listed in the $50 one-time tier. Additionally, a Public Sponsor achievement will be added to your profile.

$5 one time

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  • Buy me a coffee

$50 one time

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  • Have a (video) call with me to discuss an issue

$1,000 one time

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  • Focus on one bug for at most a week