CS

Clement Song

AI Backend

Portfolio / Java Backend / AI Application Engineering

Clement Song

Java Backend Developer focused on AI Application Engineering

I build backend systems that connect Spring Boot, MySQL, Redis, Docker, and LLM APIs into practical AI products.

Spring Boot Backend
AI Call Reliability
MySQL / Redis / Docker
View Flagship ProjectGitHubEmail / Contact

Current focus

AI Coding Learning Platform

Core stack

Java, Spring Boot, MySQL, Redis, Docker

Best fit

Backend roles and AI application engineering work

Flagship Project

AI Coding Learning Platform

The main case study for my Java backend and AI application engineering direction.

Current Focus
In Progress

Backend training platform for practical AI products

View Case Study

Problem

普通学习项目往往只停留在 CRUD，缺少鉴权、缓存、日志、部署、AI 接口失败处理和成本意识这些真实后端工程问题。

Solution

把用户系统、学习任务、AI 面试、AI 调用日志和 Redis 统计缓存整合成一个可持续迭代的后端训练平台。

Engineering Focus

JWT authentication
MySQL data modeling
Redis caching
AI call logging
Failure retry / timeout / cost awareness
Docker deployment

Current Status

In Progress

This case study is being built openly as an engineering proof: data model, API boundaries, AI call reliability, and deployment notes will be added as concrete evidence.

Spring Boot
MySQL
Redis
JWT
Docker
LLM API

Other Projects

Additional Proof Points

保留与后端工程、AI API 集成和真实业务系统相关的项目，不再重复展示主项目。

Built Product

Built

Prompt Optimization Platform

一个 AI Prompt 优化平台，支持用户输入原始提示词，并通过 DeepSeek / Gemini API 生成更清晰、更结构化、更适合模型理解的提示词。

FastAPI
JavaScript
Supabase
DeepSeek API
Gemini API
  • 用于练习 AI API 集成、用户认证、前后端联调和产品化表达。
  • 将模糊输入重写为包含角色、目标、约束和输出格式的结构化提示词。
  • 通过统一接口封装不同模型的调用结果和失败状态。
View DetailsDemo

Backend Case Study

Case Study

Enterprise System Practice

参与企业级业务系统开发，关注后端接口、业务流程、数据处理、设备交互流程和系统稳定性。

Java
Spring Boot
MyBatis
SQL
Business Flow
Debugging
  • 在真实业务场景中训练需求理解、异常处理和接口设计能力。
  • 持续改进问题排查、数据处理和用户体验细节。
  • 案例表达已去除公司名、客户名、内部系统名称和敏感业务细节。
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Technical Notes

Writing

我写技术文章不是为了堆数量，而是记录真实工程问题的思考过程。 首页只突出与 Java 后端和 AI 应用工程化最相关的 draft / outline。

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AI Engineering

AI 接口为什么不能当普通接口用

AI 接口有延迟、成本、失败、不可控输出等问题，需要调用日志、重试、超时和成本统计。

Draft note, not a finished long-form article yet.

Draft

Spring Boot

JWT 鉴权在 Spring Boot 中的完整实践

梳理登录签发 Token、请求拦截、用户上下文解析、过期处理和认证异常返回。

Draft note, not a finished long-form article yet.

Draft

Redis

Redis 缓存用户学习统计的设计思路

围绕学习统计的高频读取，设计缓存键、过期时间、主动失效和数据库回源策略。

Planned outline to expand with implementation evidence.

Planned

Resources

Verification Resources

求职验证入口，集中放置招聘方可以快速检查的代码、联系方式、简历和技术复盘。

Career Assets

GitHub

Open code, learning records, and engineering experiments.

Primary place to review code, project progress, and backend engineering practice.

Career Assets

Email

Direct contact for Java backend and AI application roles.

Best direct contact channel for Java backend and AI application engineering opportunities.

Project Notes

Project Notes

Technical retrospectives behind the backend and AI application projects.

Use this to review how I think through auth, data modeling, caching, AI API reliability, and deployment.

Contact

Email me about Java backend / AI application engineering opportunities.

如果你正在寻找一名专注 Java 后端、AI 应用工程化和真实项目交付的开发者，可以通过邮件联系我。

Primary Contact

Best channel for roles and collaboration

song3286791241@gmail.com
Send EmailReview flagship work
Opportunity fit
  • Java backend developer roles
  • AI application engineering work
  • Spring Boot, MySQL, Redis, Docker projects