Liya Fan
Overseas Sales at Fujian Golden Dragon Rare-Earth Co.,Ltd
London, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolLiya Fan is an Overseas Sales professional based in London with seven years of experience bridging technical open-source work and international business. Although currently focused on sales at Fujian Golden Dragon Rare-Earth, she has a substantive engineering background as a back-end contributor to major Apache projects—Calcite, Arrow, and Flink—where she optimized query planning, memory management, and performance-critical algorithms. Her code contributions show a pragmatic attention to efficiency and robustness, from expression simplification and shortest-path optimizations to vector comparisons and IPC support. Trained in business at Hult and internationally at Schule Schloss Salem, she blends commercial acumen with a developer’s mindset, making her effective at translating technical capabilities into market opportunities. Her GitHub motto, "Learn to fail, or fail to learn," reflects a data-driven, iterative approach to problem solving that informs both sales strategy and technical collaboration.
7 years of coding experience
International Baccalaureate, International Baccalaureate at Schule Schloss SalemBachelor of Business Administration, Bachelor of Business Administration at Hult International Business School
English, Chinese, German
Github Skills (27)
sorting-algorithms10
apache-calcite10
algorithms10
apache-flink10
memory-management10
query-optimization10
big-data10
flink-sql10
java10
calc10
vector10
javas10
sql10
optimisation10
performance-optimization10
Programming languages (4)
Github contributions (5)
apache/arrow
May 2019 - Feb 2022
Apache Arrow is the universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics
Role in this project:
Back-end Developer
Back-end DeveloperContributions:212 reviews, 151 commits, 244 PRs in 2 years 9 months
Contributions summary:Liya primarily focused on enhancing the performance and functionality of the Apache Arrow Java library. They implemented features for vector value comparison, dictionary encoders, and parallel searchers. A significant portion of their work involved addressing various performance issues through code refactoring and optimization of existing APIs, particularly related to memory management and buffer manipulation. Moreover, they contributed to file/stream IPC support.
memorymulti-languagetoolboxacceleratedarrow
apache/calcite
Feb 2020 - Dec 2022
Apache Calcite
Role in this project:Back-end Developer
Back-end DeveloperContributions:125 reviews, 26 commits, 50 PRs in 2 years 10 months
Contributions summary:Liya's commits primarily focus on enhancing the Apache Calcite project by improving the expression simplification process and optimizing the query execution plan. They made changes to simplify expressions involving unary minus, unary plus, and arithmetic operations, thereby potentially improving query performance. Additionally, the user addressed the efficiency of graph operations by optimizing the shortest-path algorithm implementation.
geospatialapache-calcitesqlapachebig-data
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.