Pierre Ricadat
Technical Lead at Devsisters
Seoul, South Korea
Summary
🤩
Rockstar🎓
Top SchoolPierre Ricadat is a Technical Lead based in Seoul with 12 years of experience building scalable, fault-tolerant backend systems and shipping live games such as CookieRun: Kingdom. A seasoned Scala and functional-programming advocate, he is the creator of Caliban and Shardcake and an active open-source contributor to prominent projects like ZIO, sttp and tapir, where he has implemented core features and compatibility updates. He has led cross-functional teams and designed architectures for high-availability services—ranging from proactive healthcare chatbots to low-latency gaming servers—often blending distributed systems, Kafka, and cloud services. Hands-on with both design and tests, Pierre has deep experience adding concurrency-safe primitives (queues/shutdown semantics) to foundational libraries and integrating WebSocket/server capabilities. Comfortable moving between strategic architecture and detailed implementation, he combines pragmatic engineering leadership with a track record of impactful OSS work that influences the Scala ecosystem.
12 years of coding experience
12 years of employment as a software developer
Master of Engineering (M.Eng.), Computer Science, Master of Engineering (M.Eng.), Computer Science at Université de Technologie de Belfort-MontbéliardAcademic semester abroad, Computer Science, Academic semester abroad, Computer Science at Korea Advanced Institute of Science and Technology
French, English, Korean
Stackoverflow
631reputation
10kreached
25answers
1question
Github Skills (24)
asynchronous10
async10
testing10
http10
zio10
websocket10
akka10
akka-http10
scala10
websockets-client10
functional-programming10
websocket-client10
playframework10
client-websocket10
concurrency10
Programming languages (10)
Github contributions (5)
zio/zio
Sep 2018 - Jun 2021
ZIO — A type-safe, composable library for async and concurrent programming in Scala
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:27 releases, 185 reviews, 202 commits in 2 years 9 months
Contributions summary:Pierre primarily focused on implementing features and tests related to queue management and shutdown functionality within the ZIO library. Their contributions involved adding new functionalities like `shutdown`, `takeUpTo`, and `offerAll` to the `Queue` data structure. Additionally, the user wrote and integrated a comprehensive set of unit tests to verify the correctness of the implemented features and the queue's behavior in different scenarios, including edge cases and concurrent access.
functional-programmingqueuesstreamsasynchronicityasync
softwaremill/tapir
May 2020 - Feb 2022
Rapid development of self-documenting APIs
Role in this project:Backend Developer
Backend DeveloperContributions:1 review, 13 commits, 11 PRs in 1 year 9 months
Contributions summary:Pierre contributed to the backend implementation of the `tapir` project, specifically focusing on integrating WebSocket support and enhancing existing server functionalities. They implemented WebSocket support for the Play server, which involved modifying the `PlayServerInterpreter` and creating `PlayWebSockets`. The user also improved the Play server by setting the content-type header in Part when using PlayServerInterpreter.
functional-programmingendpointsobservabilityhttp4ssttp
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