> Hello, I'mKai_
9+ years building high-scale distributed systems for gaming and payment platforms. Currently owning 8 production systems serving 3 brands.
{
"name": "Lương Nhật Kha",
"alias": "Kai",
"role": "Tech Lead",
"experience": "9+ years",
"systems_owned": 8,
"total_loc": "160K+",
"payment_integrations": "40+"
}Production Systems
Battle-tested systems handling payments, fraud detection, and gaming operations at scale
Payment Gateway
High-throughput payment processing system handling millions of transactions with 40+ third-party integrations
Platform API Gateway
Central API gateway serving all internal tools with RBAC, multi-auth, and Jira approval workflows
Automated Slip Processing
Intelligent withdrawal approval system with 17-rule validation engine and fraud detection
More Systems
Real-time Fraud Detection
Multi-signal fraud detection consuming 6 Kafka topics
Gaming Administration
56+ admin commands for user and gaming operations
Multi-Brand Dashboard
React admin dashboard serving 3 brands with feature flags
Content Management System
Full-stack CMS with React 19 + NestJS 11
Audit Logging System
Centralized audit logging with Elasticsearch ILM
Technical Expertise
9+ years of hands-on experience with modern technologies
Backend
Frontend
Database
DevOps
Also experienced with
Interactive Demos
These demos run on real backend services - based on actual production code
Let's Connect
I'm always open to discussing new opportunities, interesting projects, or just having a chat about technology.
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