Billy Hu
Principal Software Engineer at Microsoft
Redmond, Washington, United States
Summary
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Rockstar🎓
Top SchoolBilly Hu is a Principal Software Engineer in Redmond with 11+ years at Microsoft and a career spanning large enterprise and product firms since 2005. He focuses on pragmatic, simplified engineering that prioritizes what matters—driving backend reliability, testability, and production-ready APIs. At Microsoft he progressed from Software Engineer to Principal, mentoring teams while shipping robust systems and improving CI/QA practices. Billy contributes to notable open-source work on microsoft/promptflow, enhancing chat evaluation, enabling unit tests and e2e pipelines for higher-quality LLM app deployments. His background combines a master's in software engineering from Fudan with deep experience in backend development and practical QA automation.
11 years of coding experience
20 years of employment as a software developer
Master's degree Computer Software Engineering, Master's degree Computer Software Engineering at Fudan UniversityBachelor's degree Computer Science, Bachelor's degree Computer Science at Shanghai Ocean University
Stackoverflow
21reputation
642reached
2answers
0questions
Github Skills (10)
unit-testing10
evaluation-framework10
pytest10
unit-test10
python10
ai10
prompter10
prompt10
llm9
prompt-engineering9
Programming languages (9)
Github contributions (5)
microsoft/promptflow
Mar 2024 - Jan 2025
Build high-quality LLM apps - from prototyping, testing to production deployment and monitoring.
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:356 reviews, 126 PRs, 407 pushes in 10 months
Contributions summary:Billy's commits primarily focus on enhancing the `ChatEvaluator` module within the `promptflow-evals` project. The contributions involve modifying the `ChatEvaluator`'s output to align with the latest chat flow and fixing bugs. Additional commits include enabling unit tests for promptflow-evals and adding an e2e test pipeline.
llmmonitoringtestingaichatgpt
Azure/azureml-sdk-for-r
Aug 2019 - Sep 2020
Azure Machine Learning SDK for R
Contributions:1 release, 246 commits, 39 PRs in 1 year 1 month
azure-machine-learningrazuremlsdk-rrstudio
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