I'm a software engineer on the Voice Agent team at WATI, based in Shenzhen. Previously, I spent over four years at Thoughtworks, working on backend systems and cloud infrastructure.
I enjoy working across services, infrastructure, and delivery. These days, I'm focused on voice agents and the engineering around them: harness design, context management, tool integration, and reliability. I share experiments and longer technical notes on zhenjia.dev.
- Voice agents β real-time interactions, latency, and reliable service integration.
- Agent infrastructure β harnesses, context engineering, memory, and tool boundaries.
- Developer workflows β coding agents, evaluation, observability, and cost control.
| Project | What it does |
|---|---|
| Animichi | An anime pilgrimage app with conversational search, maps, and route planning in Japanese, English, and Chinese. |
| dsh-compressor | A DeepSeek Harness plugin adapted from Headroom that compresses tool output, leaves cached prefixes unchanged, and lets agents retrieve the originals. |
| Share HTML | Share a single HTML file through a sandboxed preview, with unlisted public links and access-key-protected private links. |
| Retypeset Odyssey | An Astro theme extended from Retypeset, with multilingual publishing, npm distribution, and guidance for coding agents. Powers my blog. |
I write mainly in Chinese, with English and Japanese versions for selected posts.
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δ»εεη«―ε° Agent εΌεη转θ‘ζε (Chinese)
A guide to agent engineering, organized around the problems a harness needs to solve. -
The deepseek of DeepSeek Harness: Overengineering or built for self-evolution?
A close look at harness boundaries, plugin architecture, and the trade-offs behind agent self-evolution. -
How to Optimize Coding Agent Costs
Research notes on prompt caching, context selection and compression, model tiering, and persistent memory.
δΈζ Β· ζ₯ζ¬θͺ
Kotlin / Java, Python, and TypeScript; Spring Boot and PostgreSQL; AWS, Cloudflare, and Terraform. I care about clear service boundaries, useful tests, and systems that are straightforward to operate.
Anime, live music, games, hiking, night-sky photography, and finding good food.
Contribution snake
