Native iOS App Development
Build iPhone and iPad apps with Swift, SwiftUI, and Apple frameworks, including UI implementation, API integration, local data, notifications, subscriptions, maps, and App Store delivery.
Software can be complex. Your next step can be clear
I help businesses clarify product needs, shape practical solutions, and move from planning to reliable delivery.
check_circle Bring the problem. No technical document required.
One consistent partner from requirements and technical assessment through implementation and delivery.
Selected clients and organizations
- TOYOTA — Smart GO Project
- HOTEL INDIGO — Hotel Indigo Alishan
- DELTA — Delta Electronics
- ITRI — Industrial Technology Research Institute
- NCKU — National Cheng Kung University
- E Ink — E Ink Holdings
- LINKER — Linker Vision
- ACTIONS — Actions Language
- UNI-CO — Uni-Co Create Technology
- Jinyufeng — jinyufeng
- NOAHK — Noahk Technology
App, Business Website & System Development
Whether you are launching an app, building an official website, or connecting scattered data and workflows into one system, I can support the work from planning through launch and maintenance.
Android & Dedicated Device Apps
Build mobile, tablet, Android TV, and dedicated-device apps with Kotlin and native Android technologies, including offline workflows, deep links, Bluetooth, camera, and third-party SDK integration.
Business Websites & Maintenance
Create an official website that presents the brand clearly and stays manageable through responsive design, a CMS, reliable delivery, and ongoing support.
Business Systems & Data Integration
Connect operational workflows, external services, device data, and existing systems into manageable interfaces and dependable data flows.
How we work
From defining the problem to delivery, each step makes the direction clearer.
Clarify the problem
Start with the idea, requirements, or existing system to identify the real need and priorities.
Shape the plan
Turn scope, risks, and resources into a plan the team can act on and review.
Deliver together
Keep the team aligned, complete the work in stages, and confirm the results.
From real problems to practical change
Each case began with different constraints. The common thread was making the problem clear before moving forward.
Hotel Indigo Alishan
Keeping the hotel brand and content operations in one maintainable system
- The challenge
- The hotel website needed to present rich hospitality content while giving the team a CMS for rooms, dining, experiences, and image assets.
- How I helped
- Owned the full frontend and backend delivery with a Vue 3 and Express.js decoupled architecture, including AWS deployment and Amazon S3 asset management.
- What changed
- Delivered the Hotel Indigo Alishan brand website and CMS so the public content and internal management workflow can continue to evolve.
Actions Language Co., Ltd.
Restoring a predictable rhythm to website maintenance
- The challenge
- The existing site had a broken maintenance and handover process, leaving issues, ownership, and next steps unclear.
- How I helped
- I audited the architecture, outstanding issues, and operational risks, then rebuilt the requirements, schedule, and acceptance workflow.
- What changed
- The handover and issue review established a clear cadence for ongoing maintenance and feature delivery.
jinyufeng
Giving a non-technical client and developers shared understanding
- The challenge
- The client needed a corporate website, but requirements, estimates, timing, and technical execution lacked a shared language.
- How I helped
- I bridged both sides by documenting requirements and coordinating contracts, estimates, schedules, and frontend and backend work.
- What changed
- The client and delivery team worked from an aligned scope and acceptance process through planning and launch.
Sprout Network Co., Ltd.
Keeping app sharing links working before a service shutdown
- The challenge
- Firebase Dynamic Links was being discontinued, putting existing vehicle sharing and deep-link journeys at risk.
- How I helped
- I evaluated alternatives, migrated to Branch.io, and rebuilt link generation and routing for installed and new users.
- What changed
- The migration was completed before shutdown, preserving app sharing, opening, and store-routing flows.
Turning observed problems into products people can use
Alongside client work, I continue to design and maintain my own products, carrying each decision from user context and feature tradeoffs through launch.
More experience
Delta Electronics, Inc.
Delta Electronics — Mobile Platform
Packaged Android capabilities such as Bluetooth, barcode scanning, camera access, and printing into a JavaScript library for web teams.
Industrial Technology Research Institute (ITRI)
ITRI — Production Management System
Digitized quality control across nine production stations with validation, historical tracking, and statistical process control.
National Cheng Kung University
NCKU Future Venue — Real-Time Energy & Air Quality Monitoring
Unified energy and air-quality sensor data into live monitoring, historical analysis, and alerts for smarter campus decisions.
Uni-Co Create Technology Co., Ltd.
Uni-Co Drone Ground Station — Operations Management System
Built secure authentication, permissions, lockout protection, and audit logging for a fully offline drone ground station.
E Ink Holdings Inc.
NCKU × E Ink — The Future of Paper
Guided three student teams from product concepts to three working Android apps for E Ink devices in two months.
Noahk Technology Co., Ltd.
Pharmacy ERP — Inventory Management System
Led requirements, delivery planning, and team coordination for a pharmacy platform connecting POS, branches, care providers, and suppliers.
Technology Stack
Technology selected to fit the problem: proven languages and frameworks across mobile, web, and backend.
AI Technologies
- OpenAI
- Anthropic
- Google Gemini
Mobile
- Swift
- Kotlin
- Jetpack Compose
Front-End
- JavaScript
- TypeScript
- Vue.js
- Quasar
- Nuxt.js
- Next.js
- PrimeVue
- HTML5
- CSS3
Back-End
- Node.js
- Python
- FastAPI
- Java
- PHP
- Laravel
Database
- PostgreSQL
- MySQL
- MongoDB
- Redis
Cloud Platforms
- AWS
- Google Cloud
- Vercel
- Cloudflare
- Supabase
DevOps & CI/CD
- Docker
- GitHub
- GitHub Actions
- GitLab
Understand people before choosing technology
I moved from hands-on engineering into requirements and project delivery. I work between business, users, and development teams to turn complexity into choices everyone can understand.
Technology is not the answer by itself. The real work is understanding the problem, being honest about constraints, and keeping everyone clear on where we are and what comes next.
Making complex ideas clear is part of the craft
2024 GDG DevFest Tainan
Led a workshop on building an AI chatbot with the Gemini API, Google Apps Script, and LINE Messaging API. I structured the scripts into approachable modules so non-technical attendees could complete the integration by changing only a few parameters.
2022 iThome Ironman Merit Award
Published a technical article every day for thirty consecutive days in the Mobile Development category, earning both an individual merit award and a team award. I was later invited by DrMaster Press to publish a book.
Southern Taiwan University — Android Fundamentals
As a GDG Tainan co-organizer, taught a four-week Android fundamentals course for computer science students. The course progressed from Kotlin basics and Android Studio to a complete BMI app project.
A few things you may want to know
Can we talk before I have complete requirements?
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Is this suitable if I do not have a technical background?
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Can you help with planning without doing the development?
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Can you work alongside an existing team?
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What happens in the first consultation, and how should I prepare?
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An incomplete idea is enough to begin
We will clarify your current situation, goals, and constraints, then identify the most practical place to start.
Clarify Your Needs and Find the Right Solution
In a one-on-one online consultation, we will clarify your product requirements, technical direction, and scope to identify the most practical next step for your current stage.
We will clarify
- checkThe problem you truly want to improve
- checkAvailable resources, constraints, and priorities
- checkPractical options and the first next step
A conversation does not commit you to a project.
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