Tianqi Liu
Software Engineer at Roblox
California, United States
Summary
🤩
Rockstar🎓
Top SchoolTianqi Liu is an ML-focused software engineer with six years of experience building reinforcement learning and LLM systems, currently a Member of Technical Staff at Hark. Previously as a Senior ML Engineer at Roblox, he led internal fine-tuning frameworks and RL environments that enabled Roblox’s first in-house LLMs to outperform proprietary baselines on complex scripting tasks at billion-token scale. His background includes productionizing RL-driven policies at Google and competitive game-AI work at Tencent, reflecting a rare blend of applied RL, systems engineering, and product-focused ML. Based in California with an MS from Brown and a BS from UCLA, he gravitates toward treating real-world problems as RL problems—designing reward structures, evaluation pipelines, and multi-agent training rigs that bridge research and production.
6 years of coding experience
1 year of employment as a software developer
Master of Science - MS, Computer Science, Master of Science - MS, Computer Science at Brown UniversityBachelor of Science - BS, Math of Computation; Economics, Bachelor of Science - BS, Math of Computation; Economics at University of California, Los Angeles
Github Skills (32)
pytorch10
python10
machine-learning10
inference10
reinforcement-learning10
deep-learning10
tensorflow10
natural-language-processing10
language-modeling10
cuda10
transformer10
speech-recognition10
nlp10
transformer-architecture10
transformers9
Programming languages (1)
Github contributions (5)
andyl98/andyl98
Nov 2021 - Jan 2025
Contributions:8 pushes, 1 branch in 3 years 2 months
andyl98/trl
Jan 2025 - Feb 2025
Train transformer language models with reinforcement learning.
Contributions:105 pushes, 6 branches in 1 month
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