Résumé

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Houy Sengleang

Software Engineer · Phnom Penh, Cambodia

+855 784-197-60 (Telegram)
hoysengleang617@gmail.com
hoysengleang.vercel.app
github.com/hoysengleang
linkedin.com/in/sengleang-houy-825801268

Summary

Backend-focused full stack developer in Phnom Penh. I build reliable business systems with Laravel and NestJS, and open-source tools for self-hosted search, AI and API security.

Experience

Full Stack Developer · Peng Huoth Group, Phnom Penh

Jan 2026 – Present

Build web admin systems and REST APIs in Laravel for the group's business operations, from database design to deployment.
Built the NestJS backend API for the Peng Huoth mobile app.
Extend the Angular web admin with new features for managing the mobile app.

Backend Developer (R&D Officer) · Wintech Software Development, Phnom Penh

Jan 2023 – Dec 2025

Pawn System: Architected and developed a robust Loan and Pawn Management System using Laravel as the core framework.
API Architecture: Designed and implemented secure, scalable RESTful APIs to handle complex financial transactions, pawn collateral tracking, and interest calculation schedules.
API Documentation: Documented the entire RESTful API enabling smoother collaboration with the frontend team and reducing integration bugs.

Selected projects

wslog · WebSocket debugging proxy

TypeScript · Node.js · React · SQLite · Docker

Proxy between any WebSocket client and server that records every frame and streams it to a live dashboard, with no code changes.
Masks sensitive fields before storage; published on npm as wslog-proxy and as a Docker image.

OpenVisionSearch · Self-hosted visual search API

Python · FastAPI · OpenCLIP · Qdrant · Docker · GitHub Actions

Image, text and hybrid product search over HTTP; indexes from URLs, uploads, folders or S3.
Measured stock CLIP framing on 300 portrait products and switched to padded framing: Recall@1 75% → 90%.

Knowledge Assistant · Document Q&A with citations

FastAPI · PostgreSQL + pgvector · React · Ollama · Tesseract OCR

Hybrid retrieval (pgvector + full-text, fused with RRF); every answer cites its source or says "not found".
Runs fully offline with Ollama; Khmer and English OCR for scanned PDFs.

apicheck · API security scanner

TypeScript · Node.js · OpenAPI · OWASP API Top 10

11 non-destructive checks across 6 OWASP API categories, discovered from an OpenAPI spec.
Terminal, JSON and SARIF output with exit codes for CI gating.

localnet-control · Published developer CLI

Python · Networking · Security · PyPI

LAN-first localhost sharing with QR output, token auth, IP/CIDR rules and optional tunnels.
Released on PyPI as localnet-control with public source and documentation.

Education

Bachelor of Software Engineering · BELTEI International University

2023 – 2025

Skills

Languages: PHP (Laravel), TypeScript (NestJS), Python (FastAPI), JavaScript; also React, Vue, Rust
Databases: MySQL, PostgreSQL, Redis, database design; Qdrant and pgvector
Tools: Git, GitHub Actions, Docker, Linux, Nginx, Postman
Concepts: REST APIs, RBAC and JWT auth, OWASP API security, RAG and LLM evaluation, LoRA fine-tuning
Spoken: Khmer (native), English (professional)