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xpoes123/README.md

David Jiang

Forward Deployed Engineer @ Ramp · New York, NY

Website · LinkedIn · GitHub · Discord: xpoes


Previously an Implementation Engineer at Uncountable (YC W19), where I built ingestion pipelines, custom parsers, and internal tooling for materials science clients.

BS in Computer Science, Mathematics, and Biochemistry from UW–Madison (2025). While there I co-authored two preprints.


Projects

SciBowl.live — Platform for the National Science Bowl community (React/TypeScript, Django/PostgreSQL). Used by teams at Stanford, Johns Hopkins, UCLA, and others. Includes tournament discovery, packet management, moderator tooling, and player analytics. ~50 daily active users.

Sports Quant Lab — Quantitative sports betting research. Building models for NBA win probability using score differential modeled as Brownian motion with drift, benchmarked against live prediction market prices (Kalshi, Polymarket). Python, SQLite, WebSocket APIs.

NBA Pick'ems — Prediction game with leaderboard for friends (Django + React).

wca-block-stats — Visual query builder for World Cube Association data. Translates block-style specs into SQL with window functions and GNPG queries (Python, SQLAlchemy, Flask).


Interests

Applied math, sports analytics, prediction markets, data modeling, backend systems, developer tooling, chess, poker, Rubik's cubes, GeoGuessr.

Pinned Loading

  1. DayTour DayTour Public

    CSS 1

  2. scibowl-org scibowl-org Public

    TypeScript 2

  3. nba-modeling nba-modeling Public

    Python

  4. SharpLab SharpLab Public

    Python