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Yuanlong Zhou

Agentic AI Engineer @ TikTok | AIGC AWS @ Amazon | LLM @ GSoC | ML/Vision/Graphics Researcher | Game Dev

About me

Welcome! I am Yuanlong Zhou,

an AI Software Engineer at TikTok, building multi-agent systems that transform user intent into playable games, with multimodal AIGC evaluation and LLM infrastructure.

I am also

  • a researcher in AIGC (text to image to 3D), Vision (detection, segmentation, tracking), Graphics (CUDA, OpenGL/WebGL, GLSL), and 3D reconstruction (SLAM, NeRF, Gaussian Splatting).
  • a builder of agentic LLM systems: multi-agent orchestration, code agents, post-training (SFT / LoRA), MCP, RAG, and automated evaluation.
    • Multimodal AIGC Evaluation & Post-Training (TikTok): structured query matrices over asset type × viewpoint × style, metric benchmarks with failure taxonomies and positive/negative examples, then failure analysis → post-training → skill-level conditioning, iterated with VLM scoring and regression tests.
    • Multi-Modal Intelligent Album (Azure AI Vision, multi-modal embeddings): text, voice and image queries embedded into a shared image-text vector space, with album images pre-vectorized into an in-memory vector index and matched by cosine-similarity Top-k retrieval for semantic search.
  • an enthusiastic open-source contributor working in Agile teams.
  • a creative VR/AR game developer (Unity3D/Unreal) and team lead, with 5+ commercial games released on Steam.

 

Experience

TikTok US | AI Software Engineer

2025/01 - Present

  • Multi-Agent Game Generation: Architected a Spec / Design / Code / Asset / Review agent platform that turns user intent into interactive WebGL games, powering a “playable TikTok” experience across 700M+ posts and 55M+ creators.
  • Multimodal AIGC Evaluation: Built an evaluation and data-curation framework for game assets (texture, sprite, UI, animation) to map Seedream-4.5 capability boundaries, raising the asset-quality score from 58.4 → 78.2.
  • Code Agent Runtime: Built LLM + sandboxed execution with LangGraph checkpoint recovery. Task completion went from 63.2% → 91.5%, latency dropped 33%, and token usage dropped ~50%.
  • Agentic Self-Improvement Loop: Automated VLM scoring, tracing, failure analysis and regression testing, raising the benchmark score from 48.2 → 89.5 and cutting iteration cycles from 1 week to 8 hours.
  • AIGC Infrastructure: Built queue scheduling, rate limiting, model routing, MQ/FaaS async workers and Redis caching. Re-architected Go/RPC services serving 8M+ participants, raising concurrency throughput by 200%.

Amazon | Applied Scientist Intern

2024/05 - 2024/08

  • Architected a multimodal AIGC/CV pipeline for marketing assets (diffusion, SAM segmentation, style/color transfer, semantic embeddings, layout composition).
  • Designed quality metrics and filtering, reranking and layout-optimization algorithms, raising the production asset pass rate from 40% → 95%.
  • Productionized the system on AWS for 200+ campaigns and 1M+ assets, cutting campaign launch time from 2 weeks to 3 days.

Google Summer of Code (Rocket.Chat) | Open-Source Developer

2024/05 - 2024/08

  • Built an open-source LLM coding assistant (Mistral, Llama) serving 50K+ global users.
  • Fine-tuned Mistral with LoRA SFT on code instruction datasets, raising the unit-test pass rate by 10%. Added multi-turn session management, dynamic model routing, and GitHub integration via REST APIs and OAuth2.

Texas A&M University | Research Assistant

2024/02 - 2024/12

  • Developed a real-time 3D reconstruction and spatial-computing system for interactive XR (plane segmentation, point-cloud clustering, scene graphs, furniture detection/tracking). Published AURORA (ACM SIGGRAPH VRCAI 2024) with patents.
  • Built real-time neural rendering with Gaussian Splatting, WebGL/GLSL and CUDA, and optimized character animation with dual-quaternion skinning, improving runtime FPS by 20%.

Dots Rhythm Technology | Founder & Game Developer

2021/04 - 2023/04

  • Developed and released 5+ Unity3D games on Steam, owning the full lifecycle from gameplay design to release.
  • Built real-time graphics and simulation systems (shaders, lighting, physics, IK, AI navigation), cutting P99 frame time by 65% and draw calls by 50%.

 

  • Education:
    2023/08-2024/12: M.Sc. in Computer Science, Texas A&M University, USA. GPA: 3.8 / 4.0
    2019/09-2023/07: B.Eng. in Computer Science (Minor: Finance), Sichuan University, China. GPA: 3.8 / 4.0
    Toefl: 106 (29/26/23/28) GRE: 324 (155/169/4)

  • Professional:
    TikTok US: AI Software Engineer
    Amazon: Applied Scientist Intern
    Google Summer of Code: Open-Source Developer
    Dots Rhythm Technology - Game Startup: Founder & XR Game Engineer

  • Academia:
    Texas A&M University – Aggie Graphics Group (IGVC Lab, Dream Lab)
    Nanyang Technological University – Business AI Lab

  • Specialization:
    Agentic Systems, Multimodal AIGC, LLM Post-Training & Evaluation, Computer Graphics/Vision, 3D Reconstruction, XR, Game Development, Distributed Systems, Cloud Service (AWS), Full-Stack Development, Machine/Deep Learning, System Architecture, Algorithm

  • Skillsets:
    Languages: Mandarin (Native), English (Professional Fluent).
    Values: Proactive, Ownership, Leadership, Dive Deep, Work Ethic, Organizational, Learning Agility, …
    Coding Languages: Go, Python, TypeScript/Node.js, C/C++, Java, C#, JavaScript, Ruby, Lua, SQL, HTML/CSS.
    AI/ML: Multimodal AIGC, LLM Post-Training, SFT / LoRA, Model Evaluation, Diffusion, Computer Vision, SAM, RAG, Agentic Systems, LangChain, LangGraph, LlamaIndex.
    Graphics / 3D: CUDA, GPU Computing, WebGL/OpenGL, GLSL, 3D Reconstruction, Gaussian Splatting, SLAM, View Synthesis, Unity3D.
    Systems / Infrastructure: Distributed Systems, RPC, Caching, MQ/Kafka, FaaS, Redis, Docker Sandbox, Kubernetes, CI/CD, AWS, Azure.
    Development: Git, React, Conda, MySQL, NoSQL, Oracle, Apache, Spring, Flask.
    Software: Adobe Acrobat, MS Office (Word, Excel macros, PPT), Google Drive, GitHub, Unity3D, Matlab, CAD, SPSS, VMware, Stata, Tibco, CRM, CMake, Gradle, 3dsMax, Blender, Linux (Red Hat, Ubuntu), IDEA, PyCharm, Visual Studio.
    Leadership: Co-Founder of Startup, President of Game R&D Club, Student Union, 4 Copyrights & 2 Patents

  • Course List:
    Object-Oriented Programming (C++, Java, Python), System Design, AI and Deep Learning, Computer Animation, Human AI interaction, Programming LLM, Mobile Wireless Network, Digital Logic and Digital System, Multimedia Technology, Data Visualization, Computer Organization, Data Structure and Algorithm Analysis, Computer Graphics, Discrete Mathematics, Operating System, Microcomputer System and Interface, The Art of Game, Computer Network, Advanced Software Engineering, Web Front-end: H5 + CSS3 + JS, Database System, Principle of Compiler, Computer Architectures, Linear Algebra, Calculus, Probability Statistics.
    Political Economy, Accounting, Microeconomics, Public Finance, Macroeconomics, Statistics, Finance, Corporate Finance, Econometrics, Monetary economics and monetary policy, International Economics, Financial Engineering, International Trade, Financial Econometrics, E-finance, Politics Economy and Diplomacy of European Union, Engineering Project Investment and Financing, Financial Risk Management, Security Investment.

 

Phone (WhatsApp): +1 979 344 4239 E-mail: ryanbowz@outlook.com

Quick Jump: project game award certificate
If you want to learn more about me, you can read corresponding pages or refer to my Resume/CV.

Last Update: 2026/10/08