Engineering with Purpose.
I’m a Full-Stack Developer who builds web applications end-to-end - from frontend screens to backend APIs and databases. I’ve worked in both Cambodia and South Korea, and I’m currently based in Seoul at Webcash.
Hen Heang
Full-Stack Software Engineer
henheang15@gmail.com
Location
Seoul, South Korea
Availability
Open to Collaborate
Languages
EN · KR · KH
Professional Mission
In my work, I develop frontend pages with HTML/CSS and JavaScript (including jQuery), and I also build backend services with Java and MyBatis. I regularly work with SQL to design queries, connect APIs to the database, and improve performance and stability.
Core Principles
The values that drive my engineering decisions every day.
Clean Code
Writing maintainable, readable, and efficient code that others can easily understand.
Problem Solving
Approaching complex challenges with analytical thinking and creative, robust solutions.
Collaboration
Working effectively with cross-functional teams to deliver exceptional, user-centric results.
Growth Mindset
Staying updated with the latest technologies and best practices in software development.
Work Journey
Roles, responsibilities, and wins that shaped how I build products today.
Building enterprise financial web applications for government agencies and corporate clients. Developing both frontend interfaces and backend API services in Korean enterprise environment.
- Developing frontend pages with HTML/CSS and JavaScript (jQuery)
- Building backend services with Java and MyBatis
- Designing SQL queries and connecting APIs to Oracle database
- Improving performance and stability of enterprise web applications
- Working in cross-functional team using Korean enterprise development patterns
Developed B2B financial platforms including billing systems and e-commerce solutions. Built end-to-end features from database design to API implementation.
- Built B2B billing platform (WeBill365) for enterprise clients
- Designed PostgreSQL database schemas and optimized query performance
- Implemented Spring Security with JWT authentication
- Developed REST APIs with Spring Boot and MyBatis
- Collaborated with Korean development teams on enterprise projects
Developed Android applications during training program at Korea Software HRD Center bootcamp.
- Built Android applications using Java/Kotlin
- Learned Korean software development practices
- Completed intensive full-stack development bootcamp
Technical Arsenal
A comprehensive list of technologies I use to build scalable products.
Ready to build the next big thing?
I'm always looking for interesting projects and collaborative teams to join forces with.