Ou Thorninvithyea

Backend-focused Full-Stack Software Engineer from Phnom Penh, Cambodia. I build high-performance APIs with Go + Fiber v3 and dynamic SPAs with Vue 3 + TypeScript. Currently deep-diving into clean architecture patterns, real-time systems, and scalable backend design.

What I'm actively learning right now:

• 🏗️ Clean Architecture — Handler → Service → Repository layers with constructor DI
• ⚡ Go Fiber v3 — High-performance HTTP framework with middleware chains, JWT auth, and WebSocket support
• 🔐 Auth patterns — JWT + Redis hybrid sessions (instant revocation, zero DB queries)
• 🗄️ Database design — sqlc/pgx for type-safe SQL, golang-migrate, FIFO cost tracking, audit trails
• 🌐 i18n — Multi-language APIs (English, Khmer, Chinese) with go-i18n
• 🧪 Go testing — Table-driven tests, benchmarks, fuzzing, and race detection
• ⚙️ Concurrency — Goroutines, channels, select, WaitGroups, mutexes, context patterns
• 📊 PostgreSQL — Schema design, indexing strategy, BRIN/B-tree, pg_notify for real-time events

Full-stack classifieds platform for Cambodia with admin panel

Go 1.26 Fiber v3 PostgreSQL + sqlx Redis JWT HS256 Vue 3 TypeScript go-i18n

Production-grade admin backend with JWT+Redis dual-layer auth, multi-language response system (en/km/zh), WebSocket real-time notifications via PostgreSQL triggers, and dynamic partial update patterns. Clean architecture with strict handler → service → repository separation.

Go Fiber REST API built from scratch — a focused backend learning project

Go 1.23+ Fiber v3 PostgreSQL + sqlx Redis JWT HS256 go-i18n WebSocket zerolog

Built entirely through iterative debugging — 10+ bugs fixed live, from nil type assertion panics to JWT signing method mismatches. Covers implicit interface satisfaction, sqlx vs database/sql, PostgreSQL placeholder syntax ($1 not 1$), i18n key exact matching, and constructor injection without frameworks. Compact repo with all lessons documented in README and Obsidian notes.

Full-stack community discussion & project showcase platform

Vue 3 Go Gin Vite REST API

Digital nomad city discovery & community platform

Vue 3 Go Gin Vite REST API

Premium remote job discovery & posting platform

Vue 3 Go Gin Vite REST API

JWT (RS256/HS256) bcrypt sqlc + pgx sqlx golang-migrate go-i18n zerolog goroutines & channels WebSocket REST API design

Vue Router Pinia PrimeVue VeeValidate + Zod Axios Responsive Design

Air (hot reload) golang-migrate PostgreSQL triggers pg_notify Nginx

Clean Architecture Handler → Service → Repository Constructor DI Middleware Chains RBAC (Role-Based Access) Actor Model (Repository pattern) Audit Trails FIFO Costing Multi-language i18n Partial Update Pattern Event-Driven Architecture

EC2 S3 RDS Lambda DynamoDB CloudFront API Gateway Kafka gRPC H3 Spatial Indexing Real-time Push (SSE/gRPC)

• Clean Architecture in Go — 5-file module pattern (model → repo → service → handler → router)
• Uber's Backend — Polyglot microservices, RAMEN push platform, H3 hexagonal spatial indexing, Kafka event streaming, gRPC bidirectional streaming
• FIX Protocol — Order entry systems and financial messaging

• SQL builders (dynamic sort/filter/search from query params)
• Rate limiting with Redis counters (INCR + TTL)
• JWT + Redis hybrid auth (self-validating tokens + instant revocation)
• bcrypt password hashing, multi-language i18n, WebSocket real-time updates
• Table-driven tests, benchmarks (-benchmem), fuzzing, race detection (-race)

• 50+ AWS services (compute, storage, databases, messaging, AI/ML)
• Docker containerization, Air hot-reload for Go development
• PostgreSQL: BRIN/B-tree indexes, partial indexes, pg_notify triggers, audit trails

_{Built with ❤️ by Ou Thorninvithyea
© 2026 Ou Thorninvithyea. All rights reserved.}