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I build backend systems, full-stack products, and automation tools with a focus on real workflows and system design.

Final-year Computer Science student at HCMUS (Ho Chi Minh City).
Interested in backend engineering, platform systems, developer tooling, and AI-assisted automation.

Event-driven workflow platform with retry, backoff, dead-letter handling, and replayable job recovery.

• async job processing using NATS
• retry + backoff + dead-letter queue
• execution history via delivery attempts
• full-stack dashboard with demo event generation
• deployed on AWS EC2 with Docker Compose, native Nginx, and Certbot

Live demo: https://relayops.lilsadfoqs.dev

demonstrates system design beyond CRUD

Full-stack ticket system with JWT auth, backend RBAC, workflow transitions, and AI-assisted replies.

Multi-agent automation framework for web CTF with Redis streams and real-time monitoring.

Go service that turns browser workflows into reusable APIs using Playwright.

Bootstrapped micro-SaaS for AI video workflows with async processing and product-first design.

CTF writeups focused on debugging, reasoning, and application-layer security.

Go · TypeScript · Python · PostgreSQL · Redis
Next.js · FastAPI · Linux · AWS EC2 · Docker
Nginx · NATS

• build full-stack systems with real workflows and constraints
• design backend services with clear separation of concerns
• turn repetitive work into tools, scripts, or APIs
• use AI tools to accelerate workflows (not replace reasoning)
• develop and deploy using Linux-first environments

• async processing, retries, and failure handling
• system design over toy implementations
• automation and developer productivity
• understanding how systems work under the hood

platform engineering · developer tooling · AI-assisted workflows · system design

while alive:
    learn()
    build()
    improve()

_{Built by @trannghiach a.k.a @lilsadfoqs.}