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Hi there 👋

My name is Michał, currently building great software with Ocado Technology.

OSS work 🔭

I'm maintainer for

Plus some random help with other Scala OSS projects

How to reach me 📫

You can chat with me on Keybase:

More contact information is always on

Check out my posts at


  1. OAuth2 client library implemented in Scala using sttp

    Scala 54 16

  2. Automatic housekeeping for your gitlab repositories.

    Scala 10 3

  3. Declarative, type-safe web endpoints library

    Scala 1.1k 282

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

    Scala 82 5

  5. identicon4s Public

    Simple Scala library for generating Identicons

    Scala 1

  6. Pass4s is a Scala library providing an abstract layer for cross app messaging.

    Scala 20 3

276 contributions in the last year

Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Mon Wed Fri

Contribution activity

August 2022

Created 1 repository
Opened 1 pull request in 1 repository
ocadotechnology/pass4s 1 merged

Created an issue in softwaremill/tapir that received 3 comments

[BUG] Tapir oneOf generates unexpected behavior of generated sttp client

TL;DR I think I've found a bug in how Tapir generates client behavior based on OneOfVariant used. The following repository reproduces the issue htt…


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