Lead Software Architect • Open-Source Contributor

Kenny Soon Jian Xin

Architecting resilient distributed microservices, open-source enterprise systems, and modern web/mobile applications. 8+ years turning complex business requirements into high-throughput software.

8+ Years Engineering
Open Source Builder
High-Concurrency Systems
Featured Code & Architectures

Open Source & Engineering Systems

Real production architectures designed from the ground up for high throughput, data integrity, and long-term maintainability.

Open-Source Financial EngineOpen Source Core

QuickZhiin — Open Source ERP & Accounting Core

A high-integrity double-entry cloud accounting engine designed for statutory compliance. Features native real-time integration with Malaysia's LHDN MyInvois e-invoicing API, automated general ledger journalizing, and multi-tenant ledger isolation.

Key Architecture Highlights

  • •Strict double-entry bookkeeping validation engine
  • •Native Malaysia LHDN MyInvois JSON/XML validation and signing
  • •Multi-currency conversion with historical rate audit trails
  • •Multi-tenant database schema with strict tenant-level isolation
TypeScriptNext.jsNode.jsPostgreSQLPrismaDocker
Conversational AI Architecture

MZhiin — Conversational AI & WhatsApp Workflow Engine

A conversational automation architecture that converts unstructured WhatsApp voice notes into structured business data. Employs Whisper STT for audio transcription, LLM agents with domain guardrails, and BullMQ task queues for rate-limiting and retry resilience.

Key Architecture Highlights

  • •Whisper STT audio processing pipeline for informal multi-lingual voice notes
  • •Structured output extraction with Zod schema verification
  • •BullMQ asynchronous job queue with Redis for backpressure control
  • •Human-in-the-loop fallback escalation mechanism
TypeScriptNestJSFastAPIPythonRedisBullMQPostgreSQL
Vertical Operations Platform

OceanZhiin — Dive Resort & Operations ERP

A specialized ERP and reservation system for coastal resorts and dive operations. Manages complex resource allocations—including boat scheduling, equipment inventory tracking, instructor assignments, and diver safety certifications.

Key Architecture Highlights

  • •Multi-resource calendar engine with concurrency conflict detection
  • •Equipment lifecycle and scheduled maintenance tracking
  • •Offline-first client record sync for remote island connectivity
  • •Automated waiver and certification verification pipelines
TypeScriptReactNode.jsPostgreSQLTailwind CSS

Explore More Code on GitHub

Check out my personal repositories, open-source architectural patterns, and developer starter kits.

About & Engineering Background

Architecting for Scalability & Maintainability

I am a Lead Software Architect and Full-Stack Engineer with 8+ years of hands-on experience designing resilient distributed systems, modern web/mobile applications, and open-source developer tooling.

High-Concurrency Architecture

Designing distributed backend systems that gracefully handle traffic surges using Redis distributed locking, asynchronous BullMQ job queues, and connection pooling.

Clean, Typed Codebases

Zero tolerance for messy code and unmaintainable technical debt. I emphasize strict TypeScript contracts, modular domain boundaries, and comprehensive test coverage.

Pragmatic Business ROI

I don't build for vanity metrics or chase short-lived hype. Every architectural decision is grounded in real business reliability, development velocity, and infrastructure cost-efficiency.

Verified Technical Stack

Tools, frameworks, and infrastructure technologies I deploy in production

Languages & Runtimes

TypeScriptJavaScript (ES6+)Node.jsPythonC#DartSQL

Frameworks & Frontend

Next.js 15 (App Router)React 19NestJSFastAPIFlutterTailwind CSS

Data & Caching

PostgreSQLRedis (Atomic Locks & Caching)MongoDBPrismaTypeORM

Cloud & Infrastructure

Google Cloud (GCP)AWSDockerKubernetesBullMQ Task QueueCI/CD
Get in Touch

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