APICHAI SORAYAN
Full Stack Developer
Summary
Professional Full Stack Developer specializing in end-to-end business systems, automation, and digital transformation. Experienced in translating operational pain points into scalable full-stack solutions that improve efficiency, reduce costs, and support business growth. Focused on building practical, high-impact platforms independently, from requirement analysis and architecture to deployment and continuous improvement.
Core Skills
Education
Master of Business Administration (MBA)
Krirk University • Present
Bachelor of Engineering
Railway System Engineering
University of the Thai Chamber of Commerce
GPA 2.91
Languages
Soft Skills
- Strategic Problem Solving
- Project Management
- Effective Communication
- Team Leadership & Mentoring
Achievements
- Delivered 2 end-to-end organizational projects as the first and only developer, from workflow analysis to deployment.
- Reduced monthly server cost from 1,100 THB to 0 THB by moving workloads to Serverless & Edge architecture.
- Built custom CRM and booking systems that streamlined operations and improved efficiency.
- Maintained 100% project delivery rate across all implementations.
Professional Experience
End-to-End System Design & Implementation
DEC 2025–PRESENTRattinan Clinic (Full Stack Developer)
- Led end-to-end solution architecture, development, and deployment for operational and customer-facing business systems.
- Developed Room Booking System with real-time Google Calendar synchronization.
- Built Lead Entry System using Cloudflare Workers and D1 for high-performance data handling.
- Implemented technical SEO and performance optimizations for system responsiveness.
- Managed infrastructure and CI/CD using Cloudflare Pages, Workers, D1, and R2 Storage.
Freelance UI Developer
JUNE 2025–DEC 2025Self-Employed (UI/UX Focus)
- Collaborated with various clients to design and implement responsive, high-performance user interfaces.
- Built interactive prototypes and custom UI component libraries using React and Tailwind CSS.
- Translated complex business workflows into intuitive and accessible digital experiences.
Software Engineer
FEB 2025–JUNE 2025Unit Company Limited
- Designed multiple internal business systems including centralized Case Management.
- Built an E-Tax System with digital documentation and automated submission.
- Implemented Campaign Management System with tracking and performance analytics.
- Developed Insurance System focusing on customer data and policy tracking.
Software Engineer - CRM & Serverless Solutions
JULY 2024–FEB 2025Krungsri Auto
- Maintained CRM system using Vue.js, Python, DynamoDB, and AWS Lambda.
- Designed serverless business logic to improve system scalability and efficiency.
- Implemented CI/CD pipelines using GitLab for reliable deployments.
Key Projects
Advanced Medical Booking System
Complex appointment system for miraDry & Ultherapy with doctor timeline views and multi-stage procedure logic.
Enterprise-Grade CRM Platform
Custom CRM for clinic management with client profiles, booking history, and real-time data synchronization.
Technical Stack
FRONTEND
Vue, Next.js, React, HTML5, CSS3, JavaScript (ES6+), Tailwind, Framer Motion
BACKEND & DATABASE
Golang, Node.js (Express, Hono), Python, .NET Core, PostgreSQL, MongoDB, D1
PLATFORM & INFRA
AWS, Google Cloud, Cloudflare, ReadyIDC, Linux, VPS, Serverless
Strategic Developer Value
Solo Engineering & Ownership
Proven ability to lead as the first and only developer, handling the entire lifecycle from initial analysis to infrastructure deployment and operational rollout for complex organizations.
Zero-Cost Infrastructure Strategy
Expertise in maximizing ROI by migrating traditional legacy systems to modern serverless architectures, successfully reducing fixed monthly server costs to zero.
Workflow-Driven Development
I specialize in studying real-world manual processes and building structured digital tools that align perfectly with day-to-day operations and reduce admin overhead.
Digital Transformation Impact
Experienced in auditing manual, inefficient workflows and replacing them with robust, secure digital platforms designed specifically for scalability and high user reliability.