Vun Wen Jin

I am a Backend Developer with a proven track record of developing large-scale digital ecosystems in Malaysia. I specialize in building high-concurrency systems, complex payment integrations, and modular backend architectures that power nation-wide applications.

Key Career Highlights:

Perodua P-Circle Superapp: Core backend developer for Perodua’s mobility-as-a-lifestyle ecosystem. I worked on the architecture that supports multi-service modules including e-wallets (P-Duit), rewards systems, and vehicle telematics.

SESB (Sabah Electricity) Modernization: Contributed to the digital transformation of utility infrastructure, focusing on backend stability and data integrity for large-scale energy management.

Microservices Architecture: Expert in migrating monolithic systems to scalable microservices, ensuring high availability, fault tolerance, and seamless inter-service communication.

My Core Technical Expertise:

System Integration: Specialized in Malaysian payment gateways FPX integration.

Backend Stack: Expert-level command of .NET (VB.NET / ASP.NET Core) and modern C# microservices.

Database Engineering: Advanced SQL Server and MySQL management, specializing in high-load optimization and complex stored procedures.

SIT & Documentation: I deliver comprehensive System Integration Testing (SIT) documents to ensure smooth handovers and production stability.

How I Support Your Business:
I provide enterprise-grade development for businesses that cannot afford downtime. Whether you are building a new superapp, integrating a national payment gateway, or modernizing a legacy system, I bring the experience of working on Malaysia's biggest platforms to your project.