# Xinwei Xiong

**AI Product Systems Engineer | Agent Runtime / Native iOS / Full-stack Systems**

I build resumable agent runtimes and native AI products with durable context, tool policy and background execution.

https://github.com/cubxxw | https://cubxxw.com | 3293172751nss@gmail.com | +86 18672749565 | Shenzhen | Open to AI / Agent product systems roles

## Engineering Signals

- **DayPage**: TestFlight v0.4.74 / 9 scheduled regressions / 464 tests + 4 UI flows
- **Agentry**: 191 tests / race detector / 63.2% coverage / stdio MCP
- **OpenIM**: #1 contributor / 358 contributions / 11-service Helm / API + E2E CI

## Experience

### getyak | Independent AI Product Engineer | Apr 2026 - present

Shipping agent runtimes and native iOS/web products with automated release and regression.

### Telepace AI | Founder / Product Engineer | Jun 2024 - Oct 2025

Owned backend, async pipelines and Kubernetes delivery; stopped after 0 paying users.

### OpenIM | Open-source Intern, then Community Contributor | Junior year to final spring · public contributions Apr 2023 - Apr 2024

Ranked #1 with 358 contributions; delivered 11-service Helm, API/E2E CI and contributor governance.

## Selected Systems

### [DayPage](https://github.com/getyak/daypage) | Internal dogfood · TestFlight v0.4.74

Lightweight capture is compiled by an LLM into a personal knowledge network; next layer: user-defined Skills → agent execution → artifacts returned to the UI.

- Shipped lightweight multimodal capture, LLM compilation, a Markdown/YAML vault and graph-backed retrieval; seven-day backfill + Local-to-iCloud integrity checks.
- Artifacts: [Release v0.4.74](https://github.com/getyak/daypage/releases/tag/v0.4.74), [CI Run](https://github.com/getyak/daypage/actions/runs/30515110520)

### [Agentry](https://github.com/getyak/daypage/tree/main/agentry) | Working prototype

A resumable, auditable agent runtime that unifies loops, tools, sessions, policy and multiple transports.

- Bounded loop; replayable JSONL sessions; allow/deny/ask; HTTP-tool rechecks for DNS, redirects and private ranges.
- Artifacts: [Architecture](https://github.com/getyak/daypage/blob/56a0cace04f9fdfa0fedcff73736fc943ad291e8/agentry/README.md), [Source](https://github.com/getyak/daypage/tree/56a0cace04f9fdfa0fedcff73736fc943ad291e8/agentry)

### [OpenIM](https://github.com/openimsdk/open-im-server) | Past contribution

Owned deployment, CI and contributor governance in a large Go IM project; reached #1 on GitHub's contributor graph.

- Delivered 11-service Helm/Helmfile, API + E2E CI, and RFC, DCO, PR-review and release governance.
- Artifacts: [Contributor Graph](https://github.com/openimsdk/open-im-server/graphs/contributors), [PR Index](https://github.com/search?q=org%3Aopenimsdk+is%3Apr+author%3Acubxxw&type=pullrequests)

**[Public Work Graph](https://cubxxw.com/projects/)**: Products / Prototypes / Engineering Logs

## Core Stack

- **Agent Systems**: Agent loop, MCP, Tool policy, Session lifecycle, Computer Use, Provider abstraction
- **Product Systems**: Native iOS, Web, Backend, TestFlight, Local-first
- **Validation**: Regression testing, XCTest / Swift Testing, Maestro, Go race detector, CI/CD, Artifact verification
- **Languages**: Swift, TypeScript, Go, Python

## Education

Wuhan College of Arts & Sciences | Computer Science · undergraduate studies completed | 2024

_Last verified: 2026-08-04_

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