Chesnay Schepler
Software Engineer at Confluent
Summary
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RockstarChesnay Schepler is a seasoned software engineer with 13 years of experience, currently contributing at Confluent and serving as a committer and PMC member for Apache Flink. He specializes in backend systems, performance optimization, serialization, and DevOps automation—evidenced by significant contributions to Flink core, Flink Docker packaging, and related tooling. Chesnay has improved build and deployment workflows by automating version extraction and making Docker images more configurable and reproducible. His work spans technical writing and community-facing updates, having rebuilt parts of the Flink website and maintained release and PMC communications. Notably, he has extended compatibility tooling like japicmp to better handle Java generics and interface default methods, showing deep understanding of Java binaries and API evolution. He combines hands-on engineering with open-source stewardship, making infrastructure more reliable for large-scale stream processing ecosystems.
13 years of coding experience
Github Skills (32)
maintenance10
docker10
apache-flink10
apidoc10
scripting10
data-serialization10
flink-sql10
dockers10
java10
serialization10
javas10
api-documentation10
automation10
script10
api10
Programming languages (10)
Github contributions (5)
apache/flink-docker
Apr 2020 - Sep 2022
Docker packaging for Apache Flink
Role in this project:
DevOps Engineer & Automation Engineer
DevOps Engineer & Automation EngineerContributions:44 reviews, 62 commits, 66 PRs in 2 years 4 months
Contributions summary:Chesnay primarily focused on enhancing the Docker packaging and build processes for Apache Flink. Their contributions included developing scripts to configure build environments with configurable download URLs, and updating the Docker entrypoint configurations. They also integrated automation to extract and utilize Flink version information. These modifications streamline the building and deployment of Flink Docker images.
flinkpackagingdockerapacheapache-flink
apache/flink
Apr 2013 - Jan 2023
Apache Flink
Role in this project:Back-end Developer
Back-end DeveloperContributions:2682 reviews, 3273 commits, 3640 PRs in 9 years 10 months
Contributions summary:Chesnay's commits reveal a focus on backend development within the Apache Flink project. Their contributions include removing dependencies, refactoring methods, and introducing new abstractions and classes. They made enhancements in relation to serialization of objects in JSON, as well as in performance optimizations. Furthermore, the user's work covered a wide range of project areas, from performance testing to supporting internal tools such as metrics and schema configuration.
pythonflinkconnectorsqlapache
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