William Zeng

Co-Founder

San Francisco, California, United States4 yrs 3 mos experience
AI EnabledAI ML Practitioner

Key Highlights

  • Cofounded a leading AI coding assistant startup.
  • Achieved a 10% lift in search quality at Roblox.
  • Mentored interns who received full-time offers.
Stackforce AI infers this person is a SaaS-focused AI developer with strong expertise in machine learning and software engineering.

Contact

william@sweep.devLinkedIn

Skills

Core Skills

Artificial Intelligence (ai)Software Development

Other Skills

Large Language Models (LLM)Generative AI ToolsDeep LearningPyTorchNatural Language Processing (NLP)

About

xai

Experience

Xai

Member of Technical Staff

Mar 2026 – Present · 1 mo

  • coding

Sweep

Cofounder/CEO

Jun 2023 – Mar 2026 · 2 yrs 9 mos · San Francisco, California, United States

  • Sweep is the best AI coding assistant for JetBrains.
  • We're backed by Goat Capital (Robin Chan, Justin Kan), the CEO & President at Replit, and Exceptional Capital.
  • Our team built one of the first coding agents in March 2023, and now builds the best AI coding assistant for JetBrains.
Large Language Models (LLM)Artificial Intelligence (AI)Software Development

Roblox

4 roles

Senior Machine Learning Engineer

Promoted

Feb 2023 – May 2023 · 3 mos

  • Youngest Senior MLE at the company. Cumulative 10% lift in search quality.

Software Engineer II

Feb 2022 – Jan 2023 · 11 mos

  • Mentored two interns, both received full time offers

Software Engineer

Jul 2021 – Jan 2022 · 6 mos

  • Solo rewrote the search indexing pipeline for Roblox games

ML Engineer Intern

Jun 2020 – Aug 2020 · 2 mos

  • Evaluation system for game quality

Education

Carnegie Mellon University

Bachelor's degree — Statistics/Machine Learning

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