Zhiheng Liu

Software Engineer III · AI & Context Systems
Singapore PRzaynjarvis@gmail.com+65 83099012https://zaynjarvis.com
Profile

AI builder maintaining OpenViking, an open-source context database, and Zouk, an agent IM app, alongside other toy-to-production products. Founding engineer of the legal-tech KnowledgeDB project in 2019. Power user of Codex Pro, Claude Max 20x, and other AI tools.

Experience

TikTok Pte. Ltd

Software Engineer III · Context Engineering
SingaporeAug 2021 - Present

Building OpenViking, an open-source context database for agent memory and knowledge that works across agent harnesses; previously worked on TikTok VOD.

Context Engineering

  • Lead a Singapore team of three on OpenViking, an open-source project with 27K GitHub stars; secured Codex Pro credits from OpenAI for the project.
  • Building BYOC solutions for OpenViking and its context infrastructure.

Agent on Team Development Lifecycle

  • Built an agent-based fault-attribution system for automated alarm analysis and troubleshooting.
  • Improved development efficiency across the team.

VideoPlay Strategy Platform

  • Led the VideoPlay Collaboration solution set, enabling bidirectional device-cloud feature transmission and end-to-end video profiles in TikTok Feed; increased user active days by 0.037% and stay duration by 0.18%.
  • Architected a strategy orchestration system for real-time client-side rule execution and built a multi-experiment platform to reduce metric dilution and accelerate validation.

Multimedia System Optimization

  • Led storage optimization efforts, reducing per-video storage costs by 90% and saving over 500 PB in one quarter; improved strategy-engine throughput by 10x.
  • Architected a distributed TikTok video upload system to reduce upload latency and improve scheduling with real-time statistics.

Leadership & Impact

  • Mentored five junior engineers across multiple projects; authored 10+ technical articles with 3,000+ reads.
Education

Nanyang Technological University

B.Eng. in Electrical and Electronic Engineering

Highest Distinction · GPA 4.92/5.00 · Dean's List · Full Scholarship

Aug 2017 - Jun 2021