β― whoami
Yao Sun
Senior Software Engineer
I build resilient distributed systems and the interfaces that make them feel effortless.
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Languages β³Frontend β³Backend & Infra β³Observability β³Local-first sync β³WASM at the edge β³Effect systems β³Differential dataflow β³
01Selected work
View all βScroll βΒ Β Case studies in systems, interfaces, and the seams between them.
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01 2025 Team
Aurora β a programmable edge cache
A globally distributed cache with per-request invalidation rules, cutting p99 latency by 62% across 30+ regions.
RustCloudflare WorkersDistributed Systems
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02 2024 Team
Meridian β a typographic design system
A token-first component library adopted by 12 product teams, with a build that fails on contrast and motion-safety regressions.
TypeScriptSvelteDesign Systemsa11y
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02Capabilities
01 β Languages
- TypeScript
- Go
- Rust
- Python
- SQL
02 β Frontend
- Svelte / SvelteKit
- React
- Tailwind
- GSAP
- WebGL
03 β Backend & Infra
- Cloudflare Workers
- PostgreSQL
- Kafka
- gRPC
- Kubernetes
04 β Observability
- OpenTelemetry
- Grafana
- Prometheus
- Sentry
Currently exploring Local-first syncWASM at the edgeEffect systemsDifferential dataflow