Heran Lin
Co-Founder & CTO at LakeSail
Shenzhen, Guangdong Province, China
Summary
🤩
Rockstar🎓
Top SchoolHeran Lin is a Co-Founder and CTO with 12 years of experience building production ML and search systems, currently leading technology at Shenzhen-based LakeSail. He has driven recommendation and e-commerce search solutions at Tencent and A9/Amazon, and as a freelance machine learning engineer built real-time data pipelines and online query services. Heran blends applied research roots from Carnegie Mellon and internships at Microsoft Research Asia and Bosch with hands-on backend engineering—evidenced by code contributions to the Apache DataFusion SQL engine to improve UDTF handling and internal data structures. He is comfortable moving between research, product, and infrastructure, turning complex ranking and cold-start problems into scalable services. Colleagues describe him as an engineer-founder who ships impactful systems and quietly contributes to notable open-source data-processing projects.
12 years of coding experience
7 years of employment as a software developer
Bachelor’s Degree Computer Software, Bachelor’s Degree Computer Software at Tsinghua UniversityMaster’s Degree Computational Data Science, Master’s Degree Computational Data Science at Carnegie Mellon University
Chinese, English
Github Skills (12)
fusion10
query-engine10
rust10
arrow-keys10
back-end-development10
sql10
arrows10
arrow-js10
protobuffer9
protobuf9
data-structures8
data-structure8
Programming languages (6)
Github contributions (5)
apache/datafusion
Jun 2024 - Mar 2025
Apache DataFusion SQL Query Engine
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 5 PRs, 13 comments in 9 months
Contributions summary:Heran made several contributions focused on enhancing the Apache DataFusion SQL query engine. They modified the `Expr::Wildcard` handling, updating its type and associated protobuf definitions. They also added the ability to access UDTFs within the `SessionContext` and provided support for deregistering them. Additional changes involved code formatting and returning references. The user updated the internal data structures and code.
querypythonquery-enginedataframerust
lakehq/sail
Aug 2024 - Apr 2025
LakeSail's computation framework with a mission to unify batch processing, stream processing, and compute-intensive (AI) workloads.
Contributions:164 reviews, 266 PRs, 400 pushes in 8 months
arrowbig-datadatadatafusionpyspark
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