Daniel Vigovszky
Senior Staff Software Engineer at Golem Cloud
Hungary
Summary
🤩
Rockstar🎓
Top SchoolDaniel Vigovszky is a Senior Staff Software Engineer with 14 years of experience building reliable, high-performance backend systems and improving developer tooling across Scala, Haskell and mixed-language stacks. He has driven architecture and operational improvements at companies like Prezi and Golem Cloud while contributing to major open-source projects in the ZIO ecosystem (zio, zio-schema, zio-http, zio-json) and other staples like fs2 and bloop. Daniel's strengths lie in systems-level problem solving—race condition fixes, codec and macro correctness, build tooling and Gradle integration—and in raising maintainability and testability across large codebases. He combines hands-on implementation of low-level channel/codec internals with pragmatic engineering leadership as an architect for editor and document backends. Based in Hungary, he brings deep experience unifying heterogeneous tech stacks and a knack for subtle, reliability-focused fixes that prevent intermittent production failures.
14 years of coding experience
20 years of employment as a software developer
Master of Science (MSc) Technical Informatics, Master of Science (MSc) Technical Informatics at Budapest University of Technology and Economics
Hungarian, English
Stackoverflow
301reputation
13kreached
5answers
4questions
Github Skills (44)
asynchronous10
json10
netty10
package-management10
async10
testing10
http10
zio10
xml-schema10
scala10
stream10
http-client10
build-automation10
codec10
cabal10
Programming languages (16)
Github contributions (5)
zio/zio-schema
Feb 2022 - Jan 2023
Compositional, type-safe schema definitions, which enable auto-derivation of codecs and migrations.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 releases, 63 reviews, 30 commits in 11 months
Contributions summary:Daniel primarily contributed to the `zio-schema` repository by implementing and improving the schema definitions, which involved the unification of schema for `Either/Left/Right`. They also focused on the implementation of equality for schema and introduced support for Dynamic and SemiDynamic schemas. Furthermore, the user addressed several codec-related issues and improved protobuf performance.
derivationziotype-safeschema-validationdefinitions
zio/zio-http
Sep 2022 - Jan 2023
A next-generation Scala framework for building scalable, correct, and efficient HTTP clients and servers
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 releases, 222 reviews, 42 commits in 4 months
Contributions summary:Daniel contributed to the development of the `zio-http` framework, focusing on internal API improvements and bug fixes. They introduced an "Unsafe API" and addressed Scala 3 compatibility issues. The user's changes primarily involved modifications to core server-side components, including the `ServerInboundHandler` and `Request` classes. These modifications focused on low-level channel handling.
zioscala-libraryhttp-clientwebsocketscala
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