可立即到職・彰化員林／可配合台中、新竹、雙北Available now · Changhua, Taiwan · open to Taichung, Hsinchu, Taipei
張誠恩 Cheng-En Chang
前端工程師・AI 應用・軟硬體驗證Frontend · AI Applications · Hardware/Software Validation
我把耗時、容易出錯的流程，做成穩定好用的工具；也習慣先證明它是對的，才交出去。資工碩士，熟悉 React、TypeScript 與 Gemini API，另有約 14 個月 3C 產品軟硬體驗證經驗。
I turn slow, error-prone workflows into reliable tools, and I prove they work before I ship them. M.S. in Computer Science, experienced with React, TypeScript and the Gemini API, plus about 14 months of 3C product hardware/software validation.
- 人工 → 工具manual → tool
- 4 h→5 min
1 小時錄音的轉錄時間to transcribe a 1-hour recording
- npm test
- 24,132passed
發票對獎自動化測試automated tests, invoice checker
- 驗證實習validation
- 7terms
寒暑假返任，合計約 14 個月seasonal terms, about 14 months
01作品Work
Gemini 逐字稿大師 Gemini Transcription Master
2026/01 – 2026/09
長音檔轉逐字稿的純前端工具，解決 AI API 單次請求長度限制，以及長時間轉錄中途失敗就得整段重來的問題。
A frontend-only tool that turns long audio into transcripts. It works around the AI API's per-request length limit and removes the need to restart a long job when it fails midway.
- PASS實測 1 小時錄音約 5 分鐘完成（自動切成 12 段）；以人工聽打約 4 小時估算，節省 95% 以上時間。A 1-hour recording finishes in about 5 minutes (split into 12 chunks), over 95% faster than an estimated 4 hours by hand.
- INFO以 Web Audio API 在瀏覽器端切成 5 分鐘片段，最多 3 段同時送 Gemini 轉錄後依時間合併。Splits audio into 5-minute chunks in the browser with the Web Audio API, transcribes up to 3 at a time with Gemini, and merges them in order.
- INFO保存每段進度可斷點續傳；API 失敗時以指數退避自動重試（最多 3 次）。Saves progress per chunk so jobs can resume; failed API calls retry with exponential backoff (up to 3 times).
- INFO支援逐字稿與時間戳編輯、TXT／SRT 匯出；音檔不經自建伺服器。Editable transcript and timestamps with TXT/SRT export; audio never passes through a self-hosted server.
統一發票智能對獎 Smart Invoice Checker
2026/01 – 2026/09
電子發票對獎 Web App，解決逐張手動比對號碼費時又容易看錯的問題：掃描 QR Code 即可對獎，收件匣的電子發票可一次批次檢查。
An e-invoice lottery checker that replaces slow, error-prone manual matching: scan a QR code to check instantly, or batch-check every e-invoice in your inbox.
- PASS以 Vitest 建立自動化測試：6 期財政部真實開獎號碼、各獎級邊界、末三碼 000–999 窮舉，加上 18,000 組隨機比對，共 24,132 組全數通過。Vitest suite built on six real draws, every prize-tier boundary, an exhaustive 000–999 sweep and 18,000 random cross-checks: 24,132 cases, all passing.
- INFO設計 6 層開獎資料來源備援（含 GitHub Actions 每日同步的官方快照），每層 4 秒逾時，失效即自動切換。Six fallback data sources (including an official snapshot synced daily by GitHub Actions), each with a 4-second timeout and automatic failover.
- INFO支援手動輸入、QR Code、Gmail 共 3 種對獎方式；QR Code 免呼叫 AI 即可對獎，辨識不到時以 Gemini Vision 備援。Three ways to check: manual entry, QR code and Gmail. QR scanning works without AI, with Gemini Vision as a fallback.
- INFO以 Google OAuth 2.0 取得授權後，透過 Gmail API 批次掃描收件匣中的電子發票。After Google OAuth 2.0 consent, batch-scans inbox e-invoices through the Gmail API.
02經歷Experience
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2025/11 – 2026/10
志願役一等士兵（載波作業兵，兼辦資訊業務）Private First Class, Carrier Communications Operator & IT Duties
中華民國國軍Republic of China Armed Forces
- 每日依單位 Excel 管理表彙整約 80 支行動裝置的管理資料並核對正確性，供主管逐日檢查、追蹤異常。Compiled and checked daily management records for about 80 mobile devices using the unit's Excel tracking sheet, so supervisors could review and follow up every day.
- 依保密規範處理資料與文件；每月指定資料準時繳交，服役 11 個月從未延遲。Handled data under confidentiality rules; never missed a monthly report deadline in 11 months.
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2020/07 – 2023/08
3C 產品測試寒暑期實習生3C Product Test Intern (seasonal)
百佳泰股份有限公司・寒暑假連續 7 期返任，合計約 14 個月Allion Labs, Inc. · 7 consecutive seasonal terms, about 14 months
- 執行 NEC、HP、Microsoft Surface 等品牌螢幕、桌上型主機與筆電（3 類產品、每期約 3 個機種）的軟硬體功能驗證與穩定性測試。Ran hardware/software functional and stability tests on monitors, desktops and laptops from NEC, HP, Microsoft Surface and others (3 categories, about 3 models per term).
- 依 Excel 測試清單（Test Case）逐項執行並記錄結果；發現異常時穩定重現、整理重現步驟，回報工程師協助 Debug 並追蹤至結案。Executed test cases from Excel test sheets; reproduced anomalies reliably, documented steps, reported to engineers and tracked issues to closure.
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2023/08 – 2025/07
國立彰化師範大學 資訊工程碩士M.S., Computer Science & Information Engineering
論文：5G 專網於智慧醫療中的應用・中華扶輪獎學金（2024–2025）National Changhua University of Education · Thesis: Private 5G in Smart Healthcare · Chinese Rotary Scholarship (2024–2025)
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2019/08 – 2023/07
大葉大學 資訊工程學士B.S., Computer Science & Information Engineering
大葉大學Da-Yeh University
03技能與證照Skills & Certifications
測試與驗證Testing & Validation
- Microsoft Certified: Azure AI Fundamentals (AI-900)Microsoft · 2020/12
- MSCS: Information Systems Security · Essential of C# ProgrammingMicrosys · 2021/11
- MSCS: Network Infrastructure, Configuring · Big Data, Statistical Analysis · Essential of Software ProgrammingMicrosys · 2019/11
語言：中文母語；英文閱讀略懂。Languages: Mandarin (native); English (basic reading).