Tony Hsu
Open Source Software Engineer at Datadog
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolTony Hsu is an Open Source Software Engineer based in Berlin with 10 years of experience building high-performance Ruby systems and scaling critical back-end services. Currently contributing to Datadog’s dd-trace-rb APM client, he focuses on core tracing, testability, and advanced features like 128-bit trace ID support while simplifying integrations in popular projects such as graphql-ruby. Previously he led backend and integration work at CHECK24 and honestbee, optimizing databases and pipelines to cut costs and dramatically improve endpoint performance. Known for strong OOP design, rigorous testing practices, and pragmatic refactors, he brings a proven track record of turning complex performance problems into maintainable, measurable improvements. Unusually for a software engineer, he began his career in applied life sciences, which contributes to his methodical, data-driven approach to engineering.
10 years of coding experience
6 years of employment as a software developer
Bachelor of Science - BS, Agricultural Chemistry, Bachelor of Science - BS, Agricultural Chemistry at National Taiwan University
Chinese, English
Github Skills (11)
distributed-tracing10
graphql10
graphql-ruby10
backend10
back-end-development10
wordpress-graphql10
wpgraphql10
ruby10
opentracing8
apm8
performance-optimization8
Programming languages (10)
Github contributions (5)
DataDog/dd-trace-rb
May 2022 - Jan 2023
Datadog Tracing Ruby Client
Role in this project:
Back-end Developer
Back-end DeveloperContributions:14 releases, 590 reviews, 494 commits in 8 months
Contributions summary:Tony primarily contributed to the development of the Datadog Tracing Ruby Client, focusing on core tracing functionality. Their contributions included removing redundant code, refactoring existing components for better maintainability, and enhancing the library with features like handling service entry spans and improved testability with the addition of detailed and efficient unit tests. Furthermore, they focused on implementing and verifying a new feature related to the handling of 128-bit trace IDs for logging and propagation.
apmtracingruby-clientrubydatadog-tracing
rmosolgo/graphql-ruby
Aug 2022 - Aug 2022
Ruby implementation of GraphQL
Role in this project:Backend Developer
Backend DeveloperContributions:1 review, 1 commit, 7 PRs in 1 day
Contributions summary:Tony focused on refactoring and improving the Datadog tracing integration within the GraphQL-Ruby library. Their contributions involved removing deprecated options and methods related to Datadog tracing, and simplifying the logic for analytics. This included updates to multiple files, including the core tracing files and supporting specifications, to align with the latest version of the Datadog library.
relayrailsrubygraphqlgraphql-ruby
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