Workflow digitization
Multi-level approvals, permissions and delegation, SLAs, email notifications, PDF export and audit trails that replace Excel-driven processes.
Eliot Su (蘇祥育) · Full-stack Engineer
a7868783@gmail.com · github.com/Eliot5566 · linkedin.com/in/eliot-su-6a834227b · eliot5566.github.io/Su-Xiangyu-Portfolio/en
Full-stack Engineer at MasterPiece
Full-stack EngineerEnterprise systems integration & workflow digitization
I'm Eliot Su, a full-stack engineer focused on internal enterprise systems, workflow digitization and cross-system integration. My work spans front-end and back-end development, REST APIs, database design, ERP / WMS integration, management reporting and production troubleshooting.
Where I fit
Full Stack Engineer- Front end
- Next.jsReactJavaScript / TypeScript
- Back end
- Node.jsASP.NET (VB.NET)REST APIs
- Database
- OracleSQL ServerMySQL
- Enterprise
- ERPWMSApproval workflowsReporting
- Also
- LINE botsLLM appsSystem integration
- Edge
- Domain knowledge in operations & manufacturing
- ~3 yrsbuilding enterprise systems
- 3 DBsintegrated across
Oracle · SQL Server · MySQL - 40+public GitHub repos
- 96.9%Paper Radar recall on
systematic-review screening
01About
Solving problems at the level of the whole system
I build with Next.js, React, Node.js and ASP.NET on Oracle, SQL Server and MySQL, and I work from the whole system down: understand the business process, break down the data and rules, then build the front end, the back end and the integrations with existing systems.
Beyond enterprise systems I build and run live web products (WorkSuan and Weekend Island) and keep shipping LINE bots and LLM applications, taking them from requirements and architecture through implementation, deployment and validation on my own.
Earlier work in healthcare administration and manufacturing means I know how operations actually run, which makes it faster to turn what users need into an engineering solution.
- Taiwan
- B.S. Healthcare Administration, Hungkuang University
- Mandarin (native) · English CEFR B1
ERP / WMS data integration
Connecting Digiwin TIPTOP ERP and Smart Logistics WMS, reconciling data across Oracle, SQL Server and MySQL, and turning it into management reports.
LINE bots & LLM applications
Parking Helper, Paper Radar and Jev Arena: built solo from requirements and architecture to deployment and validation, with cost and accuracy measured.
How I work
Start on the floor
Sit with the people doing the work to map the real process, its exceptions and its pain points, not just the ticket.
Design data & rules
Translate needs into data fields, workflow rules and permissions, and trace where every piece of data comes from and goes.
Build & integrate
Own the front end, back end and database together, connect ERP, WMS and existing systems, and verify data stays consistent across them.
Ship, then keep improving
Watch real usage and logs after launch and iterate on feedback until the system is actually adopted.
02Experience
Work experience
Full-stack development of internal enterprise systems: approval workflows, ERP / WMS integration, reporting and production support.
Full-stack Engineer Current
MasterPiece (金全益股份有限公司)
Nov 2023 – Present
I own internal web systems end to end: requirements, database design, front-end and back-end development, and production troubleshooting, connecting ERP, WMS and day-to-day operations.
See the integration architecture (simplified)
Workflow digitization
- Built multi-level approval systems in Next.js / React with role-based access, delegated approval, SLAs, email notifications, PDF export and audit history.
- Replaced manual and Excel processes for quality incidents, sample development, and purchasing / work orders with web systems, iterating on feedback from each department.
ERP integration & reporting
- Integrated Digiwin TIPTOP / TTOP ERP (Oracle) via SQL Server OPENQUERY and multi-table joins across items, BOMs, work orders, purchasing, receiving and inventory.
- Built reports on delivery dates, supplier on-time rate, equipment capacity and maintenance completion using CTEs, temp tables and aggregation.
- Developed internal management and reporting systems with ASP.NET Web Forms and VB.NET.
WMS integration & troubleshooting
- Worked on the Digiwin Smart Logistics WMS integration, connecting the WMS API with Oracle ERP and tracing work-order receipts and ERP write-backs.
- Reconciled data across Oracle, SQL Server and MySQL to find quantity mismatches, missing or duplicated transfers and sync failures.
- Diagnosed service issues layer by layer, from APIs and application logs to the Java adapter, JDBC connection pool and database.
Volunteering
Volunteer, Website Update Team
Guangfu Disaster Relief Info Hub · GuangFu Hero
Sep 2025 – Oct 2025
On 23 September 2025, rain from Typhoon Ragasa made the barrier lake on the Mataian River overflow, burying the town of Guangfu in Hualien under mud and killing 19 people. Tens of thousands of volunteers poured in, but there was no single place that matched what was needed with who had arrived. Within days, volunteers in Taiwan, Japan, the US and Canada built the Guangfu Disaster Relief Info Hub. I joined its website update team, working on front-end page features.
- 120Kactive users (11 Sep – 8 Oct, 28 days)
- 1.16Mevents; 71K views of the volunteer-matching page
- 91Kactive users in the first week (1 – 7 Oct)
- The hub brought together volunteer matching, supply distribution, a pre-trip checklist, a map of sites and the volunteer community, so people knew where to go and what to bring before they set off.
- Adjusted and extended front-end page features. Needs on the ground changed daily, so the pages had to change quickly for volunteers to find the right tasks and sites instead of a wasted trip.
- The team worked fully remotely and shipped most features about two days after the idea; the hub matched more than 9,000 volunteers in its first month (news report, in Chinese).
Earlier
-
May 2023 – Oct 2023
Front-end Engineering Bootcamp
iSpan International (資展國際)
Designed and built the full-stack e-commerce site ShiYueGuo (React, Node.js, MySQL) and led a team through a full-stack project.
-
Apr 2021 – May 2023
Assistant
Lead Yu Industry Co., Ltd.
Coordinated materials, equipment and staffing for printing projects, working with suppliers to keep resources on schedule.
-
Apr 2019 – Jan 2020
Medical Laboratory Assistant
Changhua Christian Hospital
Managed internal and external research projects and outsourced testing, organized meetings and wrote minutes.
-
2014 – 2018
B.S. Healthcare Administration
Hungkuang University
03Work
Selected projects
Built outside my day job: two live products, plus open-source tools and full-stack projects you can open and try.
012026 · Live product · Featured on free.com.tw
WorkSuan · Taiwan payroll & leave calculators
Pay and leave for Taiwan's office workers, worked out in one place: take-home pay, leave planning, overtime, annual leave and severance.
- 20+pay, leave and insurance calculators
- 37unit-test files for the rules
- 0servers or databases; data never leaves the browser
- Covers take-home pay, leave planning, overtime, annual leave, severance, unemployment and parental benefits and the labor pension; every tool shows its working, the legal basis and a link to the official calculator, with rates updated from government notices.
- A leave-planning algorithm reads the official work calendar to find the longest breaks for the fewest days off, with calendar (ICS) export and share cards. Inputs live in the URL, so a link sent over LINE opens the same result.
- A static Next.js export on Cloudflare Pages that installs to the home screen and works offline. GitHub Actions syncs holiday events from government open data every day and checks each July that next year's data is in place.
Reviewed by free.com.tw, a long-running Taiwanese free-tools blog, as "a free, no-sign-up calculator site for Taiwan". Read the article (Chinese).
022026 · Live product
Weekend Island · events & trip planner
Where to this weekend? Events, places and itineraries across Taiwan's 22 counties and Japan, in one place.
- 1,168tourism events synced automatically
- 6,182attractions across Taiwan
- 22 + JapanTaiwan counties plus key regions in Japan
- Date, county, type, mood, price and indoor/outdoor filters combine freely and live in the URL. One-line search ("what's on in Taichung this weekend") is parsed into filters by rules, falling back to keywords for the rest.
- Favorites and trips need no account: drag to reorder by mouse, touch or keyboard, catch time clashes, share a link and open Google Maps directions, plus a MapLibre map and an events calendar.
- A sync pipeline pulls from the Tourism Administration, Taipei Travel and TDX with validation, normalization, de-duplication and idempotent updates, and a failed sync never wipes data. The /admin CMS has optimistic locking, an audit log and submission review.
032026 · Open source · 28★
Paper Radar
Reads every new arXiv paper each morning and surfaces the few you should actually read.
- 33 sto judge 501 papers
- $0.06a day to read all of arXiv
- 96.9%systematic-review recall
- Write your interests in plain English; the model answers one yes/no question per paper with a calibrated probability, and code decides must-read, maybe or skip.
- On four unseen Cochrane reviews it screened 19,447 records, recovered 96.9% of the studies reviewers included and cut reading by 78%.
- Runs entirely on GitHub Actions + Pages with a web page and RSS feed, plus optional Slack, Discord and Telegram digests. Fork and go, no server.
042026 · Open-source game · npm
Jev Arena
Write a fighter in plain English and let a model pilot it in real time.
- Players write a strategy and reflexes in YAML; the model reads the arena several times a second and returns actions with probabilities.
- An Elo ladder you join with a pull request, with GitHub Actions running the matches and updating rankings.
- Swappable brains: Jev, other models or any LLM, compared under the same rules.
052026 · Full-stack MVP
Mobile ordering system
From QR ordering to the kitchen pass to admin reports: the full flow for a restaurant.
- Three roles, three interfaces: customers order from their table and track status, the kitchen works from a live board, managers use the admin console.
- Role-based access control in the admin, with an operations dashboard and reports.
- Next.js + Prisma + PostgreSQL, Docker Compose for the database and Vitest for tests.
062025 · LINE bot
Parking Helper
Send your location on LINE and instantly see where there's still a space nearby.
- Share a location or type an address to find car parks or street parking within 2.5 km, sorted by distance.
- Pulls live availability and pricing from Taiwan's TDX transport API, falling back to city open data when coverage is thin.
- Google Geocoding for addresses and Distance Matrix for real driving distance and time, shown as LINE Flex Message cards with one-tap navigation.
04More work
Small, complete projects
US stock monitor
Pre-market, after-hours and closing prices with RSI14, ATR and MA5/20/60, switching sessions on Taipei time and caching to save API calls.
FAQ management API
CRUD API for FAQs plus similarity matching to find the best answer, with role checks, Swagger docs and unit tests.
3D-print sales tracker
A small internal system for materials, products, sales records and inventory.
Taiwan holiday API
Look up Taiwan's public holidays by date or year as JSON, sourced from the government open data platform.
Zest Wear fashion brand
A static brand site modeled on a well-known fashion label, with attention to type, color and interaction.
ShiYueGuo · Japanese sweets shop
Bootcamp capstone: a full-stack store with accounts, a gift-box builder and PayPal checkout, with a case study.
Recently on GitHub
Live- JEV-Paper-RadarReads every new arXiv paper and surfaces the few worth reading
- jev-arenaReal-time bot battles with fighters written in plain English
- orderSystemMobile ordering: customer, kitchen and admin views
- algorithmFAQ management API with similarity matching
- Parking-HelperLINE bot that finds nearby parking in real time
05Skills
Technical skills
CoreFamiliar
Languages
Work: TypeScript, SQL, VB.NET · Open source: Python, JavaScript
Front end
Approval systems at MasterPiece, WorkSuan, Weekend Island
Back end
MasterPiece internal systems, ordering API, Parking Helper
Databases
MasterPiece ERP / WMS integration, Weekend Island, ordering system
Enterprise systems
MasterPiece: approvals, ERP reporting, WMS integration
APIs & integrations
Weekend Island data sync, Parking Helper, ShiYueGuo payments
Applied AI
Paper Radar, Jev Arena
Tooling & deploy
CI and deployment for every open-source project
06Learning
Courses & certificates
Coursera certificates; click through to verify. English: CSEPT Level 1 (CEFR B1).
- MetaAdvanced React
- MetaReact Basics
- MetaProgramming with JavaScript
- MetaIntroduction to Front-End Development
- Johns Hopkins UniversityHTML, CSS, and JavaScript for Web Developers
- University of MichiganIntroduction to Data Science in Python
- University of MichiganPython Data Structures
- University of MichiganInteractivity with JavaScript
- University of MichiganIntroduction to HTML5
- University of MichiganIntroduction to CSS3
- UC San DiegoIntroduction to Big Data
07Contact
Got a workflow that should be simpler?
Enterprise systems, ERP / WMS integration, workflow digitization, or just a chat about tools and applied AI. My inbox is open.