Xianying Tan
Head Of Portfolio & Quantitative Management
Chaoyang District, Beijing, China
Summary
🤩
Rockstar🎓
Top SchoolXianying Tan is Head of Portfolio & Quantitative Management with 11 years’ experience blending actuarial rigor, asset management and hands-on software engineering to build systematic investment tools. Based in Beijing, she leads portfolio construction and quantitative strategies at Allianz while previously designing factor models, hedging frameworks and end-to-end quant systems at Generali China. Technically fluent in R, C++11, Python, Rust and SQL, she contributes to prominent open-source R projects (notably enhancing rstudio/DT and data.table fixes for UTF-8 and performance), reflecting deep low-level data handling and UI-to-server expertise. A CFA charterholder with MSc in Actuarial Science, she is as comfortable fixing encoding bugs and VBA models as she is steering multi-asset portfolios, and she’s known for pragmatic automation that turns complex analytics into production-ready tools.
11 years of coding experience
9 years of employment as a software developer
Bachelor's Degree, Actuarial Science, Bachelor's Degree, Actuarial Science at Nankai University
English, Chinese
Stackoverflow
2,833reputation
44kreached
19answers
1question
shiny
top-5%
checkbox
top-5%
Github Skills (24)
javascript10
strings10
utf10
r10
data-manipulation10
c-string10
datatable10
datatables10
cprogramming-language10
checkbox9
data-structure9
algorithm9
algorithms9
jquery9
shiny9
Programming languages (15)
Github contributions (5)
rstudio/DT
Jan 2018 - Apr 2022
R Interface to the jQuery Plug-in DataTables
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:12 reviews, 161 commits, 100 PRs in 4 years 3 months
Contributions summary:Xianying primarily contributed to enhancing the functionality and usability of the `dt` R package, which provides an interface to the jQuery DataTables plugin. Their work involved implementing new features like shift-click selection for multiple rows, improving the formatting of date/datetime column filters, and addressing bugs related to styling and user interactions. Additionally, they made improvements to the server-side processing mode, ensuring compatibility with features like sub data frames and the ColReorder extension, demonstrating a focus on both client-side and server-side aspects of the package.
datatablesr-packagehtmlwidgetsjqueryr
Rdatatable/data.table
Jan 2018 - May 2021
R's data.table package extends data.frame:
Role in this project:Back-end Developer
Back-end DeveloperContributions:14 reviews, 85 commits, 34 PRs in 3 years 4 months
Contributions summary:Xianying primarily focused on improving the `data.table` package by addressing bugs related to string handling and UTF-8 encoding. They implemented fixes to ensure consistent behavior with non-ASCII strings and prevented garbage collection issues. Furthermore, the user contributed to enhancements such as `setnames()` and `rbindlist()`, ensuring correct functionality and data integrity. These changes demonstrate a deep understanding of the package's internal workings and a focus on data manipulation performance and correctness.
r-packageframecranrrstats
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