THE JOURNEY SO FAR

Experience

Quantitative Technology Analyst (Commodities)
Aug 2025 – Present
  • Commodities desk.
  • Tech stack: Python, Pandas, NumPy, Airflow, AWS, AG Grid, Parquet, DuckDB.
  • Further details available upon request via email: yinjoeng2003@gmail.com
Software Engineer Intern, TikTok Live Wallet
May 2025 – Aug 2025
  • Shipped wallet features for TikTok LIVE while pioneering a file-level code-change impact analysis algorithm for its ~10M-line monorepo — surpassing tools like Nx — cutting redundant CI rebuilds and accelerating developer workflows by over 50%
Software Engineer Intern (Data Science), Global Innovation Lab
Nov 2024 – Jan 2025
  • Built a large-scale transcription and translation model with TypeScript, FastAPI, Redis, and K8s to ensure seamless compliance
Software Engineer Intern, Trading Systems
Oct 2024 – Jan 2025
  • Built high-frequency cryptocurrency trading systems in Python, C++, Kafka, ZeroMQ, TimescaleDB, and Redis
Software Engineer Intern, Enterprise Trading Analytics
May 2024 – Oct 2024
  • Improved the performance of liquidity monitoring, portfolio analysis, and performance analysis dashboards by over 20% through comprehensive bottleneck analysis and lazy loading
  • Engineered a workflow orchestration system to centralize management and monitoring of scheduled and ad-hoc view runs, boosting operational efficiency by 40% and providing real-time job visibility
  • Created an automated unit testing framework utilizing KDB+, Bash, AWS EC2, and GitHub Actions, eliminating dependence on external tools and saving significant licensing fees
Software Engineer Intern (Data)
Aug 2023 – Jan 2024
  • Created data pipelines to extract, transform, and load real estate data from varied sources using Airflow, Kafka, and Python
Software Engineer Intern
May 2023 – Aug 2023
  • Migrated the system codebase from legacy Ruby on Rails to React with TypeScript, creating reusable components across 42 functional areas, 150 pages, and over 300,000 lines of code
Software Engineer Intern
Feb 2022 – May 2022
  • Architected a momentum-based real-time trade signal system processing over 500,000 equity data points per minute via WebSocket API, delivered to over 10,000 users