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My name is Jakub Kozłowski. I'm a software engineer, currently working at Disney Streaming.

I'm mostly interested in Scala and functional programming. Sometimes I make videos, which you can find on YouTube.

If you want to talk about FP, hit me up on Twitter @kubukoz or send me an email, I'll be more than happy to help if I can.


  1. (b2s) Scala compiler plugin for better default toString.

    Scala 58 4

  2. Automatic housekeeping for your gitlab repositories.

    Scala 8 3

  3. Making Slick more functional with cats-effect.

    Scala 59 4

  4. Small CLI app for filtering out music on Spotify.

    Scala 31 9

  5. sup Public

    Composable, purely functional healthchecks in Scala.

    Scala 173 22

  6. flawless Public

    WIP Delightful, purely functional testing no-framework. Don't even try to use it at work!

    Scala 35 2

Contribution activity

September 2021

Created 4 repositories

Created a pull request in VirtusLab/scala-cli that received 4 comments

Fix reference to macOS

+0 −0 4 comments
Opened 13 other pull requests in 8 repositories
kubukoz/sup 4 merged
polyvariant/better-tostring 3 merged
nix-community/home-manager 1 merged
scala-steward-org/scala-steward 1 merged
scala-steward-org/repos 1 merged
cb372/scalacache 1 merged
kubukoz/spotify-next 1 merged
VirtusLab/scala-cli 1 merged
Reviewed 9 pull requests in 6 repositories
cb372/scalacache 4 pull requests
typelevel/ce3.g8 1 pull request
typelevel/cats-effect 1 pull request
scala-steward-org/scala-steward 1 pull request
scalameta/metals 1 pull request
scala-steward-org/repos 1 pull request

Created an issue in lampepfl/dotty that received 5 comments

Possible bug: intransitive type equality

Compiler version 3.0.2, 3.1.0-RC2 Minimized code import scala.util.NotGiven case object Obj def handle[x](req: x): Any = req match { case a: Obj.type

Opened 8 other issues in 7 repositories

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