Available for select work
Watchara Sueasakul
Full Stack Developer · Technical Lead
Technical leader with 5+ years of full-stack development and 2+ years leading teams. I architect enterprise web systems end-to-end — frontend, backend, and cloud — for clients in healthcare, retail, automotive, and finance. Architecture first, failure paths designed in, and nothing called done before it has been run.
Next.js · NestJS · Litestar
Docker · Cloudflare · Azure
5+Years experience
7Companies shipped for
20+Production systems
2+Years leading teams
01 — About
Bridging business and
technical execution
Hi, I'm Yoshi. I build production-grade software and lead the teams that ship it. My path runs from music composition to computer science — structural reasoning and creative problem-solving carry straight into system design.
I'm equally comfortable directing cross-functional engineering and writing the code myself, translating requirements into architecture with clarity and precision.
Architecture-first
System design, API strategy, and data modeling before a line of feature code.
Team leadership
Code review, release readiness, and mentoring across frontend, backend, and infra.
Domains delivered
Healthcare, retail, automotive, finance — secure data handling and payment integrations.
Co-Founder & Director — KCN Studio
A software studio with four units: Software Engineering, IoT Solutions, Media Studio, and Music Studio.
02 — Skills
The stack I build with
Primary stack
Next.js
React
NestJS
TypeScript
PostgreSQLPrisma
RedisBullMQFrontend
Angular
Vue.js
Nuxt
Tailwind
BootstrapBackend
Node.js
.NET / C#
LitestarDjango
GoLanguages
TypeScript
JavaScript
C#Python
JavaGoData
PostgreSQLSQL Server
MySQL
MongoDBFirebaseCloud & DevOps
DockerCloudflareGitHub ActionsAzureAzure DevOpsCI/CD
Git
Swagger03 — Experience
Where I've shipped
Jan 2026 – Apr 2026
Development Lead
UC Connect Co., Ltd.Led end-to-end technical delivery across concurrent projects — architecture, scope, and roadmaps. Directed code reviews, release readiness, and API/integration strategy; mentored the team on patterns and code quality.
Nov 2024 – Apr 2025
Senior Full Stack Developer
Codemonday Co., Ltd.Architected an agricultural compensation payment platform for a major agri-food producer — data validation, payment integration, automated reporting. Led a hospital group's medical records request system as Team Lead: digital request & tracking, secure data handling, third-party integrations.
Jun 2024 – Oct 2024
Full Stack Developer
BYD — Rêver Automotive Co., Ltd.Designed five internal office systems for staff and a national dealer network. Built C# .NET APIs on Azure + SharePoint, Angular/React frontends, and Azure DevOps CI/CD pipelines.
Mar 2023 – May 2024
Full Stack Developer
Indigy Co., Ltd.Built a national energy group's multi-vendor marketplace with role-based multi-stakeholder workflows, and a private hospital group's physician scheduling platform with real-time SMS gateway integration. Delivered ERP, CRM, and HR systems for retail, municipal, and enterprise clients.
Dec 2022 – Feb 2023
Software Engineer
Priceza Co., Ltd.Built an insurance web app (React.js + NestJS) for product browsing and policy management. Integrated a major Thai bank's payment gateway with automated payment reconciliation.
Jul 2021 – Nov 2022
Front End Developer
T-Dev Co., Ltd.Built responsive interfaces for the Otteri merchandise store and car-wash platform (Angular, Vue.js) with bank payment flows; designed PostgreSQL schemas with the backend team.
Education
M.Sc. Artificial Intelligence & Data Engineering
Dhurakij Pundit University · Aug 2025 – Present
B.Sc. Computer Science
Southeast Asia University · 2019 – 2024
B.A. Music Composition
College of Music, Mahidol University · 2015 – 201804 — Projects
Selected work
IDA — Integrated Doctor App
Physician scheduling & patient communications for a private hospital group.
SaaS · In progress
Serious Gamer Operating Platform
Thailand-first SaaS for competitive gaming communities. Modular monolith (NestJS · Next.js · PostgreSQL · Redis · BullMQ), PDPA-aware data classification, four-role RBAC, preset-first schemas for MOBA/FPS/RPG.
Automation · In progress
Agent Yusha / Yusha Bud
Discord-native companion bot with workflow automation, part of the broader Yusha automation ecosystem.
05 — Contact
Let's build something
that helps people
Open to leadership roles, architecture work, and serious collaborations. The fastest way to reach me is email.