/// System Status: Online

FULL-STACK
DEVELOPER.

PHONGSAPHAK MANEEWONG_

Go and Ruby on Rails services, legacy-to-container migrations on AWS, observability with Grafana and OpenTelemetry, and agentic AI tooling.

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"Engineering is the art of organizing complexity."

A Full-Stack Software Developer with a strong foundation in building scalable web applications and implementing modern DevOps practices.

I have proven expertise across diverse technology stacks including Golang, Ruby on Rails, and Next.js. My experience includes modernizing legacy systems, migrating to containerized cloud environments, and establishing robust system observability.

Passionate about exploring emerging technologies like Agentic AI, I am eager to apply my end-to-end development skills to solve complex problems within a collaborative team.

Technical foundation

Full-stack

[NEXT.JS][PYTHON][GO][FLUTTER][NODE.JS][RUBY ON RAILS][SPRING BOOT]

Cloud and infrastructure

[AWS][GOOGLE CLOUD CONSOLE][DOCKER][PROXMOX][KEYCLOAK][FIREBASE]

Observability

[GRAFANA][TEMPO][OPENTELEMETRY]

Intelligence

[GEMINI API][OPENCLAW][GOOGLE ADK][VERTEX AI][GOOGLE AI STUDIO]

Selected deployments

DEPLOYMENT_ID: 000

AI Portfolio System

[AI_ENGINEERING] [GENERATIVE_AI] [FULL_STACK]

Built this portfolio itself as a live demonstration of AI engineering. Features a streaming AI assistant powered by Vercel AI SDK and Gemini 2.5 Flash, with agentic tool calling for structured data retrieval, cookie-based rate limiting, and PDPA consent flow. Animated with GSAP + Lenis smooth scroll and Framer Motion, deployed on Next.js 16 and React 19 with Tailwind CSS v4.

A single dark server rack rendered in 3D, standing in for the containerized infrastructure this migration consolidated onto

DEPLOYMENT_ID: 001

AWS Container Migration

[INFRASTRUCTURE] [SCALABILITY]

Migrated a legacy PHP system to a fully containerized application deployed on AWS, modularizing the architecture and significantly reducing operational costs for the customer.

Study Buddy Mobile App

[MOBILE] [ARTIFICIAL_INTELLIGENCE]

A mobile application to boost productivity with a Pomodoro timer, task list, in-app economy, and an AI buddy. Built using Flutter, Firebase, and integrated with the Gemini API.

Warm-toned 3D shapes: a torus, spheres, and a ramp block, evoking the app's Pomodoro timer and in-app economy

DEPLOYMENT_ID: 002

DEPLOYMENT_ID: 003

AI Vision & Speech Edge Device

[EMBEDDED] [ARTIFICIAL_INTELLIGENCE]

Engineered the software architecture for a standalone AI hardware assistant on ESP32 microcontrollers, using UART, WebSockets, and the Claude API as its brain. Streamed TTS audio via Azure directly to a hardware speaker.

Fire Event Reporter

[RUBY ON RAILS] [GIS]

A Ruby on Rails application developed to help users allocate fire events on a map, tracking location and distance precisely to aid in rapid response and reporting.

DEPLOYMENT_ID: 004

Project P: an isometric cozy room with a character resting at a desk

DEPLOYMENT_ID: 005

Project P: Cozy Focus & Todo

STATUS: ONGOING

[WEB_APP] [PWA] [FULL_STACK]

A live, in-progress cozy productivity app that pairs a Pomodoro timer and todo list with passive RPG progression: a character and a room that grow out of real months of focused work rather than grinding. Built on Next.js App Router and TypeScript with Postgres + Drizzle, Better Auth, Zustand, and Framer Motion, shipped as an offline-capable PWA via Serwist.

VISIT_DEPLOYMENTproject-p.twan-journey.com

FULL-STACKDEVELOPER.