# Yifan Lee — AI Full Stack Developer

I build AI automations and business systems that handle the repetitive work, so people can focus on the decisions that matter. Based in Johor, Malaysia. Open to full-time roles, freelance projects and forward-deployed engineer positions. I help enterprises and individuals integrate AI into their workflow.

## Featured projects
- **[Auto Product Upload](https://yifanisme.com/projects/#auto-product-upload)**: Client product data arrived as PDFs, Word files, old websites and messy spreadsheets — copied by hand, about half a month per customer. One product takes ~10 seconds. The team now spends its time on creative work and review.
- **[AI Website QA & Pre-Launch Checker](https://yifanisme.com/projects/#ai-website-qa-and-pre-launch-checker)**: Every website was checked by hand before launch, one at a time. Reports land in the internal system for a person to approve. 3 sites in parallel on an entry-level Mac mini.
- **[CLIProxyAPI: Subscription-Based AI Billing](https://yifanisme.com/projects/#cliproxyapi-subscription-based-ai-billing)**: Pay-per-use API billing meant AI and image-generation costs grew with every request and were hard to forecast as usage scaled. AI spend moved from unpredictable per-token billing to a fixed subscription cost, supporting higher-volume image generation for a platform serving 10,000+ customers.
- **[Employee Reward Shop](https://yifanisme.com/projects/#employee-reward-shop)**: Reward requests lived in PDFs and Excel with no systematic approval. Manual PDF/Excel handling replaced company-wide.
- **[CustomGPT Library](https://yifanisme.com/projects/#customgpt-library)**: Prompts, skills, CustomGPTs and tools were scattered across platforms. Staff find AI resources in one place.
- **[Legacy Systems: Leave & Calendar Email](https://yifanisme.com/projects/#legacy-systems-leave-and-calendar-email)**: Daily-use systems were old and gave no overview of who was away. Reliable daily operations; staff know who’s in each morning.
- **[Online Admission System](https://yifanisme.com/projects/#online-admission-system)**: A university needed to move admissions from manual to online. Admissions digitized with a workflow shaped by its users.
- **[Competitor Research Automation](https://yifanisme.com/projects/#competitor-research-automation)**: Small business owners can’t easily see how they compare online or which keywords to target. Run live at the company booth: 500+ reports delivered in a single seminar.
- **[Lead Qualification Automation](https://yifanisme.com/projects/#lead-qualification-automation)**: Sales spent hours researching prospects before knowing if they were worth contacting. Sales receives pre-checked leads instead of raw research.
- **[Google Reviews Monitoring](https://yifanisme.com/projects/#google-reviews-monitoring)**: Teams needed to react quickly to reviews without checking sites by hand. Faster response to unhappy customers and a self-refreshing news section.

## Experience
### Full Stack Developer, Newpages Network Sdn Bhd (Oct 2026 – Present)
- Build and maintain full-stack web applications and internal business systems across frontend, backend, database and deployment.
- Develop responsive interfaces and maintainable backend modules with PHP, JavaScript, MySQL and a custom lightweight MVC architecture.
- Design AI-powered automation workflows with OpenClaw, custom skills, tool integrations and context-engineering techniques.
- Turn stakeholder requirements into scalable software and automation solutions.
- Improve performance, reliability and security through database optimisation, legacy-code refactoring, defect resolution and secure coding.

### PHP Developer, Newpages Network Sdn Bhd (Jul 2025 – Sep 2026)
- Developed internal business systems and CMS plugins with PHP, JavaScript, MySQL and a custom lightweight MVC framework.
- Delivered an AI resource library, an employee redemption platform, a QR code generator, an announcement system and a calendar system.
- Improved database performance through schema design, indexing, query optimisation and structured data models.
- Modernised legacy modules and mitigated SQL injection and XSS risks through secure coding practices.

### Mobile App Developer, Alva Production (Mar 2025 – May 2025)
- Developed a cross-platform iOS and Android app for planning and coordination workflows used by film production teams.
- Implemented a modular architecture, reusable widgets and maintainable state-management patterns.
- Tested and debugged the app, resolving critical defects and improving stability and user experience.
- Collaborated remotely to deliver assigned features within the internship period.

### Full Stack Developer, Southern University College (Aug 2022 – Jul 2023)
- Designed and built an online admission system on Laravel 8 covering programme applications, administrative review and enrolment records.
- Maintained the university WordPress website and built the Open Day registration page.
- Worked in an Agile Scrum team, coordinating tasks and progress in Jira.
- Supported deployment, testing, maintenance and operational reliability of university web systems.

### PHP Developer, Southern University College (Jun 2022 – Aug 2022)
- Improved the UI/UX and mobile responsiveness of the campus network portal.
- Built an internal equipment-recording app with Microsoft Power Apps.
- Redesigned and migrated the university website to a new CMS on a self-hosted IIS / Windows Server environment.
- Assisted with deployment, content migration, testing and post-deployment validation.

## Contact
- Email: yifanisme19@gmail.com
- LinkedIn: https://www.linkedin.com/in/yifan-lee/
- GitHub: https://github.com/Yifanisme19
- [Projects](https://yifanisme.com/projects/) · [Experience](https://yifanisme.com/experience/) · [About](https://yifanisme.com/about/) · [Contact](https://yifanisme.com/contact/) · [Terms](https://yifanisme.com/terms/)