Tianning Li - Software Engineer at StepFun

Tianning Li

Software Engineer at StepFun

Shanghai, Shanghai, China

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Summary

🤩

Rockstar

🎓

Top School

Tianning Li is a software engineer with seven years of experience building full-stack web apps, data pipelines, and ML-driven analytics, currently pursuing an MS in Electrical Engineering at USC and based in Shanghai. He has led product-focused engineering work—shiping a 20+ page food-ordering MVP and a 40+ screen React Native app as a tech lead—while also contributing to backend data tools and open-source technical-analysis libraries (implementing indicators like STC and Stochastic RSI for the well-known 'ta' repo). Comfortable across TypeScript/React, Node/Express, MongoDB, AWS Cognito, Python, Pandas and TensorFlow, he blends front-end UX delivery with quantitative data science and trading-analysis experience. Past roles span startups, research labs, and enterprise internships (Ctrip, Deloitte), reflecting an aptitude for turning research and large-scale data (100+ TB HDFS exposure) into product features. Colleagues describe him as a pragmatic builder who improves processes and developer productivity, with a knack for creating dashboards and visualization that make complex data actionable.

6 years of coding experience

7 years of employment as a software developer

Master of Science - MS Electrical Engineering, Master of Science - MS Electrical Engineering at University of Southern California

Bachelor of Science - BS Applied and Computational Mathematical Sciences (Data Science and Statistics), Bachelor of Science - BS Applied and Computational Mathematical Sciences (Data Science and Statistics) at University of Washington

A-level, A-level at Cambridge International Center of Shanghai Normal University

Chinese, English

Stackoverflow

Stats

3reputation

22reached

0answers

1question

Github Skills (6)

pandas10

python10

trading10

numpy10

msword6

visual-studio6

Programming languages (6)

TypeScriptJavaSolidityJavaScriptJupyter NotebookPython

Github contributions (5)

bukosabino/ta

Jun 2020 - May 2022

Technical Analysis Library using Pandas and Numpy

Role in this project:

Back-end Developer

Contributions:3 reviews, 13 commits, 4 PRs in 1 year 11 months

Contributions summary:Tianning primarily contributed to the development of technical analysis indicators for financial data. Their work focused on implementing new indicators, such as the Schaff Trend Cycle (STC), Stochastic RSI, Weighted Moving Average (WMA), Percentage Volume Oscillator (PVO), Percentage Price Oscillator (PPO), and Ulcer Index. The commits demonstrate the use of Pandas and NumPy for data manipulation and the creation of new features within the 'ta' library. The user also fixed bugs in existing indicator implementations.

financialmomentumpythontechnical-analysis-libraryfundamental-analysis

lit26/project_list

Sep 2020 - Jun 2024

Develop a website using React.js for personal projects showcase.

Contributions:4 PRs, 43 pushes, 6 branches in 3 years 9 months

reactpersonal-projectsreact-jsreactjsshowcase

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