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weiguangli-io/README.md

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Website  LinkedIn  Email


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About Me

Backend engineer with 5+ years building internet-scale services at Alibaba

All-in on AI Agent infrastructure — contributing to top open source projects

41 merged PRs across 15 top-tier AI/ML projects including OpenAI, Hugging Face, LangChain, vLLM, and more


Tech Stack

Languages   Image Image Image Image

AI / Agent   Image Image Image Image

Backend   Image Image Image

Data   Image Image Image Image

Infra   Image Image Image Image

At a Glance

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Open Source Contributions

41 Merged PRs across 15 Top-Tier AI/ML Projects


Project Stars Merged Domain
openai/openai-agents-python 20K+ 12 AI Agent Runtime (Official SDK)
huggingface/transformers 158K+ 5 ML Framework
langgenius/dify 132K+ 4 AI Application Platform
deepset-ai/haystack 24K+ 4 NLP/RAG Pipeline Framework
gradio-app/gradio 42K+ 2 ML Demo & UI Framework
pydantic/pydantic-ai 15K+ 2 AI Agent Framework
BerriAI/litellm 39K+ 2 LLM Unified Gateway
langchain4j/langchain4j 11K+ 2 Java LLM Framework
run-llama/llama_index 48K+ 2 RAG Framework
langchain-ai/langchain 129K+ 1 Python LLM Framework
vllm-project/vllm 73K+ 1 LLM Serving Engine
langchain-ai/deepagents 10K+ 1 Deep Research Agent
oobabooga/text-generation-webui 46K+ 1 LLM Inference UI
Arize-ai/phoenix 9K+ 1 AI Observability Platform
spring-projects/spring-ai 8K+ 1 Java AI Framework

Highlight Contributions


huggingface/transformers — Fixed silent attention scaling bug in GPT-2 affecting SDPA/FlashAttention backends. The bug caused incorrect outputs without any error — the most insidious type of bug. 3-round code review with maintainer. (PR #44397)

openai/openai-agents-python — Fixed RunConfig inheritance chain in agent-as-tool scenarios, ensuring parent tracing/privacy configs propagate to child agent runs. (PR #2463)

openai/openai-agents-python — Fixed voice pipeline trace lifecycle: spans were closed before pipeline processing completed, breaking observability. (PR #2472)

BerriAI/litellm — Filtered custom field from tool definitions to prevent Bedrock 400 errors. Directly impacted all Claude Code users routing through LiteLLM. (PR #22861)


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Activity


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