GeezerVison

We create complex tools which make Scala ecosystem better and Scala engineers productive.

Our notable projects include

1. DIStage: Phased Dependency Injection/First Class Modules/Multi-Modal Applications for Scala (with TypeScript and Python ports)
2. BIO: Bifunctor Typeclasses
3. Logstage: effortless Structural Logging for Scala, structure is extracted directly from AST
4. zio/izumi-reflect: static portable compile-time reflection for Scala and a simulator of Scala typer, underlying technology of DIStage and ZIO Zlayer.
5. Baboon: Data Modeling and Versioning language with strong schema evolution capabilities and automatic evolution derivation
6. SICK: deduplicated indexed binary storage for JSON
7. mudyla: mini-orchestrator for scripts in various languages based on typed DAGs
8. squish-find-the-brains: a tool to run SBT under Nix

Also we've made multiple contributions into Scala ecosystem:

• async tracing for async IO Monad runtimes which later evolved and influenced various implementations in different libraries.
• In Scala 3 & 2 compilers, added support for -Xkind-projector:underscores - underscore syntax for type lambdas, part of Scala 3 roadmap
• We help testing compiler stability: our libraries are included into Scala 3 Community Build and Scala 3 Open Community Build.
• Orders of magnitude faster publishing of Scala projects to Sonatype.
• We make lots of scalac bug reports regularly