Full Stack Developer · AI Engineer · Computer Vision

PhasuwutChunnapiya

Full Stack Developer with 6 years of experience building scalable web applications and production systems. Strong focus on Next.js, React.js, and TypeScript for high-performance interfaces — with hands-on experience in AI-driven applications including LLM-based systems, RAG pipelines, and computer vision.

Pak Kret, Nonthaburi, Thailand
Phasuwut Chunnapiya

Education

Master of ScienceGPA 3.85

Computer Science

King Mongkut's University of Technology North Bangkok

2021 – 2024

Thesis

Detecting the Type of Socket for Electric Vehicle Charger in Thailand using Deep Learning and YOLO-based Object Detection

Computer VisionDeep LearningYOLO v5–v8PyTorchScopus Q1 PublicationIEEE Conference ×2
Bachelor of ScienceGPA 2.71

Computer Science

King Mongkut's University of Technology North Bangkok

2016 – 2019

Senior Project

Warehouse Management System (WMS) — a full-stack web application for managing inventory, stock movements, and warehouse operations end-to-end.

Web DevelopmentJava / AndroidJavaScriptDatabase SystemsIoT / ArduinoAlgorithms

Core Expertise

Four pillars of technical delivery — from frontend to AI to infrastructure.

Full Stack Development

6 years delivering end-to-end web platforms across enterprise websites, commerce systems, marketing platforms, and internal tools — from pixel-perfect frontends to scalable backend APIs and production deployments.

Next.jsReact.jsNestJSNode.jsTypeScriptFastAPILaravelLoopBack 4GraphQLREST APIPostgreSQLMySQLTailwind CSSAnt Design

AI & LLM Engineering

Intelligent applications powered by LLMs, RAG pipelines, and semantic vector search.

RAGLangChainOpenAIVector EmbeddingsHuggingFace

Computer Vision

Object detection, multi-object tracking, and classification — from research to inference.

YOLO v3–v12PyTorchTensorFlowOpenCVInstance Segmentation

DevOps & Cloud

Production deployment automation, containers, and cloud infrastructure.

DockerJenkinsAWS S3/EC2CloudflareNginxCI/CD

Work Experience

6 years across enterprise web platforms, AI applications, and production systems — 4 companies, 16+ client delivery tracks.

01
TechFlow Solution Co., Ltd.Apr 2025 - Present

Full Stack Developer

Built production-grade web platforms and enterprise services with strong focus on marketplace workflows, microservice-style backend APIs, and scalable frontend architecture.

E-commerce Marketplace Platform

Multi-vendor commerce platform for buyers, sellers, and admin operations.

Next.jsNestJSTypeORMAnt DesignBootstrap 5Tailwind CSSCloudflareGoogle Maps API
  • Built core marketplace capabilities across buyer, seller, and admin domains, including onboarding, KYC, RBAC, storefront routing, and product lifecycle workflows.
  • Built end-to-end responsive UI and REST APIs for auth, profile, store management, and product modules.
  • Implemented dynamic storefront subdomain routing and DNS configuration via Cloudflare.

Media Service (File Management API)

Centralized file management service for internal systems including image processing and secure delivery.

Node.jsTypeScriptHonoAWS S3SharpPrismaPostgreSQLZod
  • Developed a shared media API platform with secure S3 delivery, image transformation pipelines, and production-grade API standards for internal service integration.
  • Developed centralized media APIs for upload, retrieval, and access control used across internal services.
  • Integrated AWS S3 with pre-signed URLs and expiration policy for secure file access.
02
Ogilvy & MatherJul 2021 - Apr 2025

Software Developer

Delivered full stack solutions for multi-industry clients including real estate, automotive, insurance, banking, campaign, and branded digital experiences.

Real Estate Industry Client

Large-scale responsive website and APIs with mapping, tracking, and compliance.

Next.jsNode.jsLoopBackGoogle MapsGA3GA4UTM
  • Owned end-to-end delivery of a large real estate platform with map visualization, multilingual UX, analytics instrumentation, and privacy-compliant lead workflows.
  • Delivered project from initial phase to launch and continuous improvement cycle.
  • Built About, Career, Case Report, Procurement, Inspiring Stories, Search, and Land Listing pages.

Automotive Industry (China)

Model campaign websites and chatbot ecosystem for test-drive and promotion flows.

Next.jsLaravelBootstrapTailwind CSSDialogflowLINE Messaging APIFacebook Messenger API
  • Delivered multiple model campaign sites and conversational channels that improved test-drive conversion through API-driven pages and chatbot-enabled customer journeys.
  • Delivered websites for five vehicle models (2 models in 2023, 3 models in 2024).
  • Integrated test-drive registration with showroom database workflows.

Automotive Industry (Japan)

Modern automotive promotion platform with service-oriented backend structure.

Next.jsNestJSPrismaTailwind CSSMantineGTM
  • Implemented scalable promotion architecture with service-oriented APIs, campaign content delivery, and GTM-based conversion tracking for measurable marketing impact.
  • Designed and implemented microservices architecture for maintainable scaling.
  • Built promotion and promotion-detail pages for 2025 campaign cycle.

Insurance Industry Client

Content-heavy responsive platform with article discovery and compliance.

Next.jsREST APIsCookie Consent
  • Built content discovery experiences and reusable site foundations, balancing SEO-friendly content flows with cookie-consent and navigation consistency requirements.
  • Developed search, bookmarks, article listing, and article detail pages with API data.
  • Implemented About Us, custom 404, and cookie consent system.

Eyewear Industry Client

Animated promotional and career website with lead collection.

Next.jsSequelizeTailwind CSSGSAPLottieGA4
  • Created high-engagement promotional experiences combining dynamic content, lead capture funnels, motion design, and analytics visibility for optimization.
  • Built search, awards, career, promotions, and detail pages with dynamic API content.
  • Implemented drop-lead forms for user data collection.
03
Adesso Technology Co., Ltd.Jul 2020 - Jul 2021

Full Stack Developer

Developed scalable media and commerce platforms with API-focused architecture and responsive UX.

Video Streaming Platform

Streaming web platform with authentication, browse, and subscription journeys.

React.jsNode.jsExpress.jsGraphQLSequelizeBootstrap
  • Developed core streaming product journeys from authentication to subscription, with responsive UX and GraphQL-backed data delivery for content consumption flows.
  • Developed responsive browsing, authentication, and subscription pages.
  • Integrated GraphQL API for content retrieval and client-side data flow.

E-commerce Book Platform

Commerce website with product catalog and account workflows.

Next.jsNode.jsExpress.jsSequelizeMaterial-UI
  • Implemented foundational e-commerce capabilities across catalog browsing, user authentication, and API-driven product interactions to support reliable online transactions.
  • Built responsive product listing and user authentication features.
  • Developed frontend and backend APIs for core e-commerce interactions.
04

Full Stack Developer Intern

Developed operational tooling for warehouse workflow and inventory management.

Warehouse Management System (WMS)

Internal operations platform for inventory and process handling.

HTMLCSSJavaScriptjQueryBootstrap
  • Built practical warehouse operation modules for inventory tracking and task workflows, improving operational visibility and day-to-day execution efficiency.
  • Built inventory tracking, data management, and user interaction modules.
  • Designed responsive pages to improve usability and operation efficiency.

Highlighted Projects

Flagship projects across computer vision, AI pipelines, full-stack systems, and blockchain.

Real-Time Smart Home Surveillance System for Parcel Delivery and Fence-Climbing Intrusion Detection

Personal Project

Real-time surveillance AI for parcel monitoring and intrusion detection.

YOLOv9-segByteTrackTelegram Bot API
  • Triggered automatic alerts when objects crossed predefined virtual boundaries.

Movie Review Sentiment Analysis

Master Degree

NLP model for sentiment prediction on movie reviews.

Pythonscikit-learnpandasNumPy
  • Built preprocessing and model selection workflow for text sentiment tasks.

Warehouse Management System (WMS)

Bachelor Degree

Warehouse operation system for SCG Saraburi with inventory workflows.

HTMLCSSJavaScriptjQueryBootstrap
  • Developed inventory tracking and operational workflows for daily usage.

Face Mask Detection

Bachelor Degree

Model to detect whether people wear masks in camera frames.

PythonYOLOv3OpenCV
  • Built a practical computer vision pipeline for health-safety scenarios.

Publications

Peer-reviewed research in computer vision — Scopus Q1 journal and IEEE international conferences.

Enhancing automatic electric vehicle charging: a deep learning approach with YOLO and feature extraction techniques

Frontiersin · International Journal · 12 March 2025

Technical Stack

96+ tools and technologies across full-stack, AI/ML, DevOps, and research.

Artificial Intelligence / Machine Learning

Large Language Models (LLMs)Retrieval-Augmented Generation (RAG)Semantic Search & RetrievalVector Search and Embedding SystemsSpeech-to-TextText SummarizationConversational AIQuestion Answering (Q&A) Systems

Framework Frontend

React.jsNext.jsViteLaravelTailwind CSSAnt DesignMantineMaterial-UI (MUI)BootstrapReact Native

Framework Backend

Nest.jsNode.jsExpress.jsFastAPILaravelLoopBack 4

DevOps

AWS (EC2)DigitalOcean (Droplet)AWS (S3)CloudflareNginxJenkinsDockerHerokuPM2