Daniel Reynaud
Member Of Technical Staff at OpenAI
San Francisco Bay Area United States
Summary
🤩
Rockstar🎓
Top SchoolDaniel Reynaud is a pragmatic software engineer and Member of Technical Staff based in the SF Bay Area with 15+ years of experience building high-performance tooling and production systems. He focuses on clear, minimal, well-tested code and considers “fast is a feature,” shipping delightful software across Python and Rust while drawing on past work in C++ and Java microservices. Daniel has been a core contributor to Spinnaker’s backend (igor, orca, echo, clouddriver, gate, kork), improving Jenkins integration, orchestration, eventing, and cloud provider workflows—work that directly impacts large-scale deployment pipelines. He’s applied formal methods and compiler techniques from a Ph.D. and early security research to practical product problems, including battery- and gas-optimizations at Apple and startups that reduced gas use by over 90%. At Andreessen Horowitz he co-led Halmos, a usability-first symbolic testing tool for EVM smart contracts, emphasizing developer ergonomics and low false-positive rates. Daniel blends deep systems and security expertise with a strong open-source track record and a taste for making complex tooling accessible to regular engineers.
10 years of coding experience
15 years of employment as a software developer
Ph.D. Computer Science, Ph.D. Computer Science at Universite de LorraineM. Sc. Computer Science, M. Sc. Computer Science at Académie militaire de Saint-Cyr Coëtquidan
English, French, German
Github Skills (39)
cron10
back-end-development10
apidoc10
groovy10
cloud-infrastructure10
cicd10
java10
refactor10
javas10
api10
jackson10
aws10
computer-engineering10
okhttp10
spring-boot10
Programming languages (8)
Github contributions (5)
spinnaker/orca
Jan 2018 - Jan 2022
Orchestration engine
Role in this project:
Back-end Developer
Back-end DeveloperContributions:27 releases, 33 reviews, 80 commits in 3 years 11 months
Contributions summary:Daniel contributed to the Spinnaker Orca project by primarily refactoring and improving the codebase. Their work involved adding missing annotations, replacing deprecated methods (e.g., String.split) with more efficient alternatives. They also addressed code quality by making operator precedence explicit and improving string encoding practices, leading to a more robust codebase. The user was also responsible for incorporating feature improvements for existing functionalities, like ensuring proper server group handling.
orchestration-engineaerospikeorchestration
spinnaker/kork
May 2018 - Feb 2020
Kork provides some basic service building blocks for Spinnaker.
Role in this project:Backend Developer
Backend DeveloperContributions:11 releases, 12 commits, 22 PRs in 1 year 10 months
Contributions summary:Daniel primarily focused on enhancing the backend functionality of the Spinnaker/kork repository. Their contributions include adding client configurations for OkHttp3, removing duplicate properties, and integrating a metrics interceptor for OkHttp3 clients. Additionally, the user refactored a core class name and updated the AuthenticatedRequest API with expanded functionalities. They also worked on pubsub and retry support.
javabuilding-blocksspinnaker
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