Backend
- Python
- Django REST Framework
- PHP
- Laravel
- APIATO
Open to backend opportunities · Phnom Penh, Cambodia
Pen Serey
Otdom.
Backend-focused Software Engineer building reliable APIs, business workflows, and web applications with Python and Django REST Framework.
I turn complex operational requirements into practical software for hotel management, property platforms, and internal business tools.
01 / About
I turn business workflows into dependable software.
I am a Software Engineer with 6+ years of experience building backend and full-stack business applications. My work combines Python, Django REST Framework, React.js, PHP/Laravel, REST APIs, databases, system integration, and workflow automation.
I enjoy understanding complex processes, clarifying requirements, and creating reliable solutions that work well in day-to-day operations. I also use AI-assisted tools such as ChatGPT, OpenAI Codex, and Claude to support development, debugging, code review, documentation, and productivity.
Build
Backend services and REST APIs
Solve
Complex business workflows
Deliver
Reliable, practical software
02 / Technical skills
A practical, backend-centered toolkit.
Web applications
- React.js
- JavaScript
- HTML & CSS
- Responsive UI
Data & integration
- MySQL
- SQLite
- Database design
- REST APIs
- API integration
How I work
- System design
- Workflow automation
- Troubleshooting
- Agile development
- Code review
03 / Experience
Professional experience
-
Squeeze Asia — Software Engineer
Developing and maintaining SuiteBook, a hotel management system. My work includes REST APIs, business logic, payment and refund workflows, kiosk-related features, and responsive React.js interfaces. I work closely with product, SQA, and engineering teams to deliver stable solutions.
-
A2A — Software Engineer
Built backend APIs and internal business tools using PHP, Laravel, and APIATO. The work covered property platforms, a language-learning application, business matching workflows, and data-focused services.
04 / Selected projects
Software built around real operations.
Selected work is described at a high level. Sensitive implementation and company details are intentionally excluded.
01Hotel management system
SuiteBook
Python · Django REST Framework · React.js · MySQL · SQLite
Developed and maintained core hotel-management workflows, including room booking, guest management, IC card activation, account settlement, kiosk payment, and QR payment handling.
What I worked on
Business logic, REST APIs, payment, and refund workflows
How I contributed
Backend features, configuration support, UI improvements, and cross-functional troubleshooting
02Property platform
Land Map
PHP · Laravel · APIATO
Developed backend APIs for property listings, buying, selling, and renting. Designed database structures and transaction workflows using APIATO architecture.
03Mobile application
Minami Dictionary
PHP · Laravel · APIATO
Built backend services for a Khmer-Japanese language-learning platform, with work focused on search functionality and data retrieval.
04Internal tool
TM Matching System
PHP · Laravel · APIATO
Developed backend logic for an internal platform that supports business matching processes and workflow automation.
05Hospitality
Resort Booking System
Backend development
Developed backend functionality for booking accommodations and activities, supporting reservation workflows for vKirirom Pine Resort.
06Hospitality
Smart Check-in/Check-out
QR-based mobile solution
Built a QR-based mobile room-access and check-in solution for vKirirom Pine Resort, supporting a more streamlined guest process.
05 / Education
2015 – 2019
BA in Software Engineering
Kirirom Institute of Technology
06 / Contact
Let’s talk about your next backend project.
I am open to Backend, Python, and Django REST Framework opportunities.