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Tiancheng-Xu/README.md

Hi, I'm Tiancheng Xu

Full-stack engineer with experience in government low-code and FDE delivery. I build front-office and middle-platform applications, AI Agent and Web3 products, and evidence-backed engineering workflows.

全栈工程师。2023–2026 年参与政企低代码与 FDE 项目,负责前台应用与中台能力的架构实现;当前专注 AI Agent、Web3、Cloud / Edge 与可验证工程交付。

Professional experience

2023–2026 · Government low-code / FDE engineering · Ningbo

  • 驻场服务宁波市公安局科信、特警等相关业务部门,参与低代码与 FDE 项目建设。
  • 负责前台业务应用与中台能力的架构实现,以及相关模块的工程交付和持续迭代。
  • 关注模块边界、系统集成、可维护性与交付质量,用可验证结果而不是技术名词描述工作。

政企项目仅公开职责与能力范围,不公开内部系统名称、数据、接口、部署拓扑或安全架构。

2026 part-time project work · Beijing

只收录个人仓库中已有实际实现的项目;空仓库、模板仓库和仅有规划的项目不列入经历。

Project What I built Evidence
Agent Market Aladdin · AI Agent 交易与任务分发平台。 Queen 将需求拆成 DAG,候选 Agent 经标签硬过滤、向量相关度与信誉评分排序后由人工或系统选定;Agent 分阶段生产,Judge 进行规则与 LLM 多维评测,不合格结果进入 Repair,最终由 Final Arbiter 汇总交付。Node / Hono、Python / LangGraph 与 Go 执行器协作,以 PostgreSQL Checkpoint、队列 / DLQ、幂等和版本冲突保护支撑暂停恢复。 Live · Repository · Evidence
BabySteps 家庭成长产品与渐进式 Web3 应用。 覆盖成长任务、家长中心、纪念馆、Provider 与链上交互;Cloudflare Edge SSR 先返回安全摘要壳,再按 marker、路径和版本门禁精确水合身份、钱包与性能 SDK。水合不一致时执行一次性纯 CSR fallback,重点解决浏览器专属依赖、服务端渲染和身份边界之间的冲突。 Live · Repository · Evidence

Personal engineering portfolio system

以下项目用于展示个人工程能力,不作为兼职或客户项目经历:

Project What it demonstrates Links
Personal AI Agent AI 智能客服与私有化模型交付。 面向售前咨询、售后处理和技术问答,使用 LlamaFactory 对 Qwen3-8B 做 NF4 QLoRA 领域微调,完成 Adapter 合并、GGUF 量化与 Ollama 私有化运行;以 BERT / 规则完成意图路由,经 Qwen Embedding、知识图谱 / RAG 检索后生成回答,Tool Calling 连接价格、退换与业务规则,多轮上下文配合低置信度、敏感问题和无答案场景转人工。 Evidence
GitHub Profile Studio 本地优先的 GitHub 公开资料工作台。 React / TanStack 前端共享统一 API 契约,可切换 Hono / Node 或 Go 后端,SQLite / Drizzle 负责草稿与幂等写入;访问令牌只留在服务端和 macOS 钥匙串,浏览器只编辑白名单字段,解决双运行时契约一致性与凭据隔离问题。 Repository · Evidence
Showcase Dashboard 静态优先的个人工程作品系统。 人工审核索引定义项目身份与核心叙事,GitHub App / Cloudflare Worker 动态补充发布清单;SSG 首屏、水合数据、按需 Babylon / Archify、项目深链、旧域名重定向和真实 404 共同解决性能、内容一致性与重型交互边界。 Repository · Live · Evidence
Portfolio Sync GitHub App 驱动的作品集同步系统。 仅收录声明 Baby2B 发布清单和 Evidence 地址的仓库;Webhook 经 HMAC 验签后即时更新,短期只读 Installation Token 拉取内容,Cloudflare Worker / KV 聚合结果,30 分钟定时刷新补齐事件遗漏,主站保留人工审核静态回退。 Live · Evidence
性能观测与成本控制 短生命周期性能观测与成本控制面。 浏览器采集 Core Web Vitals 与资源耗时,受保护入口通过固定工作流启停聚合链路,并用 nonce、幂等键、HMAC 回调和不可变快照约束执行;停止后封入口、清理项目资源并保留历史结果。AWS 当前停用,恢复工作保留为 TODO。 Control · Evidence
TC Flow 2.1 可恢复的 Feature 交付工作流。 Contract / Context 明确范围与验收,N1-N8 串联实现、审查、P0 / PII / Fallback / Human Gate 和 Feature QA;Checkpoint、事件流与 RunResult 持久化过程状态,使长任务在失败、续跑和多人协作时仍能回到正确节点。 Repository · Evidence

部分项目源码为私有仓库。公开页面只展示获准公开的产品与证据,不暴露凭据、私有数据集或模型权重。

Open-source contributions

当前可核验的 OSS 共建:7 merged + 20 open pull requests(更新于 2026-09-10)。

Merged

Project Pull request Contribution
Vite #23235 Explain server-only module reload behavior in SSR
pnpm #14674 List pnpm v12 in the security support policy
PR-Agent #3142 Hide disabled commands from user-facing help output
PR-Agent #3141 Honor GitLab /ask_line old-side positions
PR-Agent #3140 Remove dead shared rate-limit handlers
ClawBox #774 Correct model-catalog fallback behavior
PySNMP MIBs #361 Correct the TCPIPX unspecified table row type

Open pull requests

Project Pull request Contribution
VS Code #335428 Use mouse event modifiers for editor drag-and-drop state
Deno #36794 Preserve the -- separator before CLI entrypoints
MCP Servers #4775 Emit object input schemas for the filesystem server
RTK #3933 Match Ruff format routing to the first argument
RTK #3922 Add a compact gitleaks TOML filter for secret-scan output
LiteLLM #40183 Add source-backed OpenRouter metadata for gpt-5.6-sol
Chrome DevTools MCP #2686 Cover scheduled script navigation without fixed sleeps
GoogleTest #5092 Avoid shadowing a parameter in INSTANTIATE_TEST_SUITE_P
GoogleTest #5091 Preserve forced ANSI color output when CTest captures stdout on Windows
Backstage #35564 Resolve an undici security advisory
Context Mode #1128 Fix bounded curl/wget pipeline and multiline routing
Tabler Icons #1590 Preserve the SolidJS JSX source export for Vite SSR
Portless #413 Preserve routes when self-daemonized commands exit
Quicklink #501 Give generated site pages unique descriptions
Bitcoin Dev Kit #2276 Preserve the first floating TxOut and consistent ChangeSet semantics
Google WebCrypto #398 Extract the RSA-OAEP PKCS#8 import example
Web Testownik #323 Harden maintenance recovery handling
BBj Language Server #665 Unify language-server logger output
Slopshop #21 Harden per-user rate limiting
Paperclip #2 Cover run-job invocation scope resolution

Open PRs are listed as work under upstream review; only merged PRs are presented as completed upstream contributions.

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