# Kos 的工作經歷

# Kos's work experience

Canonical: https://www.aikos.cc/experience/

18 年軟體開發經驗，待過 7 間公司、做過 9 個代表專案。

## 2024/11 – 2026/05 · 資訊主管, 公司名暫不公開

- 軟體專案主管，管理 13 人以上

技術: Kafka, Redis, MongoDB, MySQL, API Gateway, Microservices, WebSocket, CDN

### 支付系統
- 擔任支付系統技術負責人，規劃系統架構與技術方案
- 安排團隊開發工作、Code Review 及技術指導
- 協調產品、客服、風控、財務等跨部門需求與開發時程
- 開發支付訂單、充值、提款及對帳系統
- 建立支付冪等、補償、重試及風控機制
- 導入 Kafka、Redis、MongoDB 建立事件驅動架構
- 優化 MySQL 查詢效能及高併發交易流程
- 建立交易監控、告警及自動化維運流程

### 錢包系統
- 擔任錢包系統技術負責人，規劃高併發資金交易架構
- 管理開發人員工作分配與專案進度追蹤
- 協調支付、財務、風控及測試團隊完成系統整合
- 開發會員錢包、帳務及資金流水系統
- 建立餘額一致性、交易冪等及分散式鎖機制
- 使用 Redis Cache 提升高併發交易效能
- 建立自動對帳、補償及風控稽核流程
- 規劃高可用錢包服務架構

### 內容服務平台
- 主導內容平台架構設計與開發規劃
- 安排團隊開發工作並協調第三方廠商串接
- 協調前端、後端、QA 及維運團隊共同完成專案
- 開發內容平台前後台及第三方內容服務串接
- 建立 API Gateway 與微服務架構
- 導入 Redis、CDN、WebSocket 提升系統效能
- 優化 API、快取及高流量存取機制
- 建立監控、告警及 AI 輔助開發流程

## 2019/01 – 2024/10 · PHP 資深工程師, 傲創科技股份有限公司

- 網際網路相關業，100 至 500 人

技術: PHP, Hyperf, Swoole, RabbitMQ, Redis, APCu, MongoDB, Elasticsearch, Canal, MySQL

- 新站點接入時間: 約 2 天 → 半天內
- 搜尋回應時間: 約 2 秒 → 300 毫秒內
- 每日處理新聞資料: 十萬級

### 新聞採集平台與全文搜尋系統
- 從零建置新聞採集平台與全文搜尋系統
- 使用 Hyperf、Swoole 建立高併發新聞採集服務
- 導入 RabbitMQ 建立任務調度、削峰填谷及非同步處理機制
- 建立 Redis、APCu 多層快取架構，提升系統效能與降低資料庫負載
- 使用 MongoDB 管理採集規則及非結構化資料
- 建立 Elasticsearch 全文搜尋平台及索引管理機制
- 整合 Canal 完成 MySQL 即時同步至 Elasticsearch
- 建立採集規則管理、失敗重試、例外處理及監控機制
- 建立可配置式採集框架，提升新站點導入效率
- 建立日誌、監控及告警機制，提升系統穩定性

成果
- 從零建置高併發新聞採集與全文搜尋平台
- 每日穩定處理十萬級新聞資料
- 新站點接入時間由約 2 天縮短至半天內
- 搜尋回應時間由約 2 秒優化至 300 毫秒內
- 建立可擴充採集框架，提升後續開發效率
- 建立高可用、高擴充性的全文搜尋架構

## 2016/10 – 2018/01 · 資深研發工程師, 聲聯網股份有限公司

- 電腦系統整合服務業，1 至 30 人
- 台北市中正區

技術: RabbitMQ, Redis, Account Ledger, AI

### 通路分佣與帳務結算系統
- 重構多層通路分佣與帳務結算系統
- 建立可配置式分佣規則引擎，支援多層代理、多通路及階梯式分佣規則
- 開發佣金計算、批次結算及帳務處理流程
- 導入 RabbitMQ 建立非同步批量結算及任務調度機制
- 建立 Account Ledger（帳務流水）及資金稽核機制
- 建立 Redis 快取機制，降低重複運算及提升結算效能
- 建立交易監控、異常補償、重試及對帳機制
- 優化結算、對帳及帳務流程，提升系統穩定性與擴充能力
- 導入 AI 協助分佣規則分析、異常檢測及帳務流程優化

成果
- 重構多層通路分佣與帳務結算系統
- 建立可配置式分佣規則引擎，支援多通路、多層級及自訂分佣策略
- 導入 RabbitMQ 非同步批量結算機制，提升結算吞吐量
- 建立完整 Account Ledger 與資金稽核流程，提升帳務一致性
- 分佣規則可透過後台設定，降低維護成本並提升需求交付效率
- 建立高可用、高擴充性的帳務與結算架構

## 2014/08 – 2016/10 · 資訊主管, 幸福家不動產

- 軟體專案主管，管理 4 人以下
- 不動產經營業，100 至 500 人
- 台南市中西區

技術: PHP, Python, MySQL, RESTful API, Composer, S3, Linux, Nginx

### 企業管理系統
- 擔任技術主管，規劃系統架構、技術選型及開發流程
- 安排團隊開發工作、工作分配及 Code Review，協調產品、業務、QA 及其他部門共同完成專案
- 主導企業核心平台架構設計與核心模組開發
- 使用 PHP、Python 開發企業內部管理系統及後端服務
- 設計與開發 RESTful API，整合內外部系統資料交換
- 規劃 MySQL 資料庫架構、索引設計及 SQL 效能優化
- 導入 Composer 套件管理及標準化開發流程
- 建置 PDF 文件解析、自動匯入及資料清洗系統
- 開發資料採集、爬蟲及資料同步服務
- 規劃檔案管理架構，整合 S3 Object Storage 檔案儲存服務
- 建立檔案上傳、下載及權限管理 API
- 負責 Linux、Nginx 環境建置、系統部署及版本發布
- 建立系統監控、維運及異常排除流程
- 導入 AI 協助文件解析、資料分析及系統效能優化

成果
- 建立高可用企業管理平台及後端服務架構
- 完成內外部系統 API 整合，提升資料交換效率
- 建立 PDF 自動解析及資料匯入流程，降低人工處理成本
- 建立自動化資料採集與同步機制，提升資料即時性
- 建立集中式檔案管理平台，提升檔案管理效率
- 建立標準化開發流程，提升團隊開發效率與系統維護性

## 2011/10 – 2013/10 · 工程師, 易透網股份有限公司

- 電腦軟體服務業，1 至 30 人
- 台南市中西區

技術: PHP, Delphi, ActiveX, MySQL, JavaScript

### 晶片卡身分驗證系統
- 參與政府機關及企業內部資訊系統開發與維護
- 與客戶進行需求訪談、需求分析及功能規劃
- 協助客戶釐清業務流程，提出系統設計與技術解決方案
- 與專案經理、客戶及開發團隊協調需求、時程及功能驗收
- 負責需求分析、系統設計、功能開發、測試、部署及維運
- 使用 Delphi 開發 ActiveX 控制元件，整合晶片卡讀卡設備
- 建立晶片卡憑證讀取、身分驗證及安全登入機制
- 使用 PHP 開發身分驗證平台及後端服務
- 整合 ActiveX 與 PHP 後端，完成登入授權及會員管理系統
- 建立會員資料、權限管理及登入紀錄機制
- 開發 RESTful API，整合前後端及相關系統資料
- 處理瀏覽器、讀卡設備及後端系統整合問題
- 負責系統測試、問題排除及技術文件撰寫
- 優化登入流程及提升系統穩定性與安全性

成果
- 參與政府機關及企業資訊系統建置
- 建立晶片卡身分驗證及安全登入平台
- 完成 Delphi ActiveX 與晶片卡讀卡設備整合
- 建立 PHP 後端登入授權、會員管理及權限控管系統
- 提升瀏覽器與讀卡設備相容性及登入穩定性
- 協助客戶完成需求導入及系統上線驗收

## 2010/10 – 2011/10 · 工程師, 小兵立大功股份有限公司

- 電腦軟體服務業，1 至 30 人
- 台南市北區

技術: ASP.NET, C#, SQL Server, JavaScript

### 企業網站與內部管理系統
- 負責企業網站與內部管理系統開發維護，參與需求分析、功能設計、程式開發及上線維運
- 使用 ASP.NET 與 C# 開發後端商業邏輯，建置會員管理、資料維護、查詢及報表等核心功能模組
- 整合 SQL Server 資料庫，負責資料存取、查詢優化與資料正確性驗證，確保系統效能與穩定性
- 負責系統功能測試、問題排查與版本更新，確保系統穩定運行並滿足業務需求

## 2008/02 – 2010/10 · 工程師, 知識科技股份有限公司

- 網際網路相關業，30 至 100 人
- 台南市中西區

技術: Third-party APIs

### 企業網站、活動網站及客製化平台
- 負責企業網站、活動網站及客製化平台系統開發，涵蓋需求分析、系統設計、功能開發、測試、部署與後續維護，提供完整專案交付
- 依據需求規劃系統功能與資料流程，完成資料庫設計、後端商業邏輯開發、前後端整合及版型建置，交付符合業務需求的客製化系統
- 開發並整合第三方 API 與外部系統服務，提升系統整合能力與資料交換效率
- 同時負責多個專案開發與維護，依時程控管開發進度，確保系統品質與如期交付
- 協助進行問題分析、系統優化、功能擴充與技術支援，持續提升系統穩定性

成果
- 獨立完成多個企業網站、活動網站及後台管理系統建置，涵蓋會員系統、問卷系統、形象網站、活動平台及企業管理系統等類型
- 建立可重複使用的功能模組與開發流程，提升客製化專案開發效率，縮短需求開發與交付時間
- 成功整合多項第三方服務與 API，提升系統擴充性，降低後續維護成本
- 在多專案並行情況下，維持專案品質與交付時程，累積跨產業系統開發與客製化解決方案經驗

---

18 years in software across 7 companies and 9 key projects.

## 2024/11 – 2026/05 · Engineering Manager, Undisclosed company

- Led a team of 13+

Stack: Kafka, Redis, MongoDB, MySQL, API Gateway, Microservices, WebSocket, CDN

### Payment System
- Tech lead for payments; planned system architecture and technical design
- Planned team work, ran code reviews and mentored engineers
- Aligned product, support, risk and finance on scope and timelines
- Built payment orders, top-ups, withdrawals and reconciliation
- Built idempotency, compensation, retry and risk controls
- Introduced event-driven architecture with Kafka, Redis and MongoDB
- Tuned MySQL queries and high-concurrency transaction flows
- Set up transaction monitoring, alerting and automated ops

### Wallet System
- Tech lead for wallets; designed high-concurrency fund transactions
- Assigned work and tracked project progress
- Coordinated payments, finance, risk and QA on integration
- Built member wallets, accounting and fund ledgers
- Kept balances consistent with idempotency and distributed locks
- Used Redis caching to speed up high-concurrency transactions
- Built automated reconciliation, compensation and risk audits
- Designed a highly available wallet service

### Content Platform
- Led architecture and development planning
- Planned team work and coordinated third-party vendors
- Coordinated front end, back end, QA and ops to ship
- Built the public-facing and admin sides of the content platform, plus third-party content integrations
- Built an API gateway and microservices
- Added Redis, CDN and WebSocket for performance
- Optimized APIs, caching and high-traffic access
- Set up monitoring, alerting and AI-assisted development

## 2019/01 – 2024/10 · Senior PHP Engineer, AoChuang Technology

- Internet, 100–500 staff

Stack: PHP, Hyperf, Swoole, RabbitMQ, Redis, APCu, MongoDB, Elasticsearch, Canal, MySQL

- Site onboarding: ~2 days → < half a day
- Search latency: ~2 s → < 300 ms
- News processed daily: 100K-scale

### News Crawling & Full-Text Search
- Built a news crawling platform and full-text search from scratch
- Built high-concurrency crawlers with Hyperf and Swoole
- Used RabbitMQ for scheduling, load leveling and async jobs
- Built multi-level caching with Redis and APCu to cut DB load
- Stored crawl rules and unstructured data in MongoDB
- Built an Elasticsearch search platform with index management
- Synced MySQL to Elasticsearch in real time with Canal
- Built crawl-rule management, retries, error handling and monitoring
- Built a configurable crawling framework to onboard sites faster
- Set up logging, monitoring and alerting

Results
- Built a high-concurrency crawling and search platform from scratch
- Reliably processed news data at the 100K scale daily
- Cut new-site onboarding from about 2 days to under half a day
- Cut search response time from about 2 s to under 300 ms
- Built an extensible framework that sped up later work
- Built a highly available, scalable search architecture

## 2016/10 – 2018/01 · Senior R&D Engineer, ShengLian Network

- Systems integration, 1–30 staff
- Zhongzheng, Taipei

Stack: RabbitMQ, Redis, Account Ledger, AI

### Commission & Settlement
- Rebuilt the multi-tier channel commission and settlement system
- Built a configurable rule engine for multi-tier agents, channels and tiered rates
- Built commission calculation, batch settlement and accounting
- Used RabbitMQ for async batch settlement and scheduling
- Built an account ledger and fund auditing
- Added Redis caching to cut repeat computation
- Built transaction monitoring, compensation, retries and reconciliation
- Streamlined settlement and accounting for stability and scale
- Used AI to analyze rules, detect anomalies and improve accounting

Results
- Rebuilt the multi-tier commission and settlement system
- Shipped a rule engine for multi-channel, multi-tier and custom plans
- Raised settlement throughput with async batches on RabbitMQ
- Improved accounting consistency with a full ledger and audits
- Made commission rules configurable in the admin, reducing maintenance cost and speeding up delivery
- Built a highly available, scalable settlement architecture

## 2014/08 – 2016/10 · Engineering Manager, Happy Home Realty

- Led a team of up to 4
- Real estate, 100–500 staff
- West Central, Tainan

Stack: PHP, Python, MySQL, RESTful API, Composer, S3, Linux, Nginx

### Enterprise Management System
- As tech lead, planned the architecture, technology choices, and development process
- Assigned work, ran code reviews, and coordinated product, sales, QA, and other teams to deliver projects
- Led the core platform architecture and core modules
- Built internal systems and back-end services in PHP and Python
- Designed RESTful APIs for internal and external data exchange
- Designed MySQL schemas and indexes; tuned SQL
- Introduced Composer and a standard dev workflow
- Built PDF parsing, auto-import and data cleaning
- Built data collection, crawlers and sync services
- Designed file management on S3 object storage
- Built upload, download and permission APIs
- Set up Linux and Nginx, deployments and releases
- Set up monitoring, operations and incident handling
- Used AI to support document parsing, data analysis, and system performance optimization

Results
- Built a highly available platform and back-end architecture
- Integrated internal and external systems via APIs
- Automated PDF parsing and import, cutting manual work
- Automated data collection and sync for fresher data
- Built a central file management platform
- Standardized the dev process for speed and maintainability

## 2011/10 – 2013/10 · Engineer, YiTou Net

- Software services, 1–30 staff
- West Central, Tainan

Stack: PHP, Delphi, ActiveX, MySQL, JavaScript

### Smart-Card ID Verification
- Built and maintained systems for government and enterprise clients
- Ran client interviews, requirements analysis and planning
- Mapped client workflows and proposed technical solutions
- Coordinated scope, schedule and acceptance with PMs and clients
- Handled requirements analysis, system design, development, testing, deployment, and operations
- Built Delphi ActiveX controls to integrate smart-card readers
- Built certificate reading, ID verification and secure login
- Built the verification platform and back end in PHP
- Connected ActiveX to the PHP back end for login and members
- Built member data, permissions and login history
- Built RESTful APIs between front end, back end and other systems
- Solved browser, card-reader and back-end integration issues
- Handled testing, troubleshooting and technical docs
- Improved login flow, stability and security

Results
- Delivered systems for government and enterprise clients
- Built a smart-card ID verification and secure login platform
- Integrated Delphi ActiveX with smart-card readers
- Built PHP login, authorization, member and permission management
- Improved browser and card-reader compatibility
- Took clients through rollout and acceptance

## 2010/10 – 2011/10 · Engineer, XiaoBing LiDaGong

- Software services, 1–30 staff
- North, Tainan

Stack: ASP.NET, C#, SQL Server, JavaScript

### Corporate Sites & Internal Tools
- Built and maintained corporate sites and internal systems, from requirements to release
- Built ASP.NET / C# business logic: members, data entry, search and reports
- Integrated SQL Server: data access, query tuning and validation
- Handled testing, troubleshooting and version updates

## 2008/02 – 2010/10 · Engineer, ZhiShi Technology

- Internet, 30–100 staff
- West Central, Tainan

Stack: Third-party APIs

### Corporate & Campaign Sites
- Built corporate, campaign, and custom platforms across requirements, design, development, testing, deployment, and maintenance
- Planned features and data flows; built databases, back ends and templates
- Built and integrated third-party APIs and services
- Ran several projects in parallel and kept them on schedule
- Handled fixes, optimization, new features and support

Results
- Delivered corporate, campaign and admin sites: members, surveys and more
- Built reusable modules that shortened delivery
- Integrated many third-party services, cutting maintenance cost
- Kept quality and deadlines across parallel projects