Wayne
Cheah
Senior Software Engineer
Summary
Backend engineer who takes ageing systems and makes them fast, observable and cheap to run. Specialised in legacy modernisation, event-driven architecture and high-throughput platform design, with platforms carrying over RM 1 million in daily transactions. Works as the engineer writing the code and reviewing the design. Open to Senior or Staff Engineer roles with real technical depth and ownership.
Work Experience
Senior Software Engineer / Technical Lead
- Migrated two legacy PHP (CodeIgniter) monoliths to Node.js microservices on Nest.js and Hono, delivering 50%+ faster APIs.
- Redesigned the MySQL data model to MongoDB on a NATS event backbone; queries returned 30–50% faster.
- Owned architecture for a B2B commerce platform carrying 1,000+ daily active users and RM 1M+ in daily transactions.
- Built the multi-cloud deployment pipeline across AWS, GCP and Azure DevOps using Docker and Cloud Run.
- Rebuilt the frontend from MVC into a decoupled Vue 3 and React setup with Redis caching on hot paths.
- Stood up observability on Prometheus and Grafana, plus Swagger and GraphQL schema documentation.
- Mentored 3–4 engineers on service boundaries and event-driven patterns; ran standups and architecture reviews.
Senior Web Developer
- Built the backend for a VR commerce application on Nest.js using event-driven microservices.
- Integrated Stripe payments into one of the first VR shopping experiences in the Malaysian market.
- Deployed to AliCloud with Docker, Kubernetes and Helm, and established a GitOps workflow on Argo CD.
Senior Software Engineer / Technical Lead
- Designed and built a multi-tenant field force SaaS used by Starbucks, MrDIY, MyNews, FamilyMart, TGV and Poh Kong.
- Built the platform on GraphQL APIs with an Angular frontend, running on GCP Kubernetes.
- Delivered real-time sales and operations tracking across large distributed field teams.
- Implemented CI/CD with load balancing and database replication for tenant isolation and uptime.
- Guided 3 engineers and 2 designers on multi-tenant architecture, and ran internal training on the SaaS toolchain.
Senior Software Engineer / Technical Lead
- Architected a Mobile Backend-as-a-Service platform so multiple client apps could share one scalable backend.
- Delivered a defect tracker used by property developers including EcoWorld, Matrix Concept and Symphony.
- Built an iBeacon promotion system for AirAsia Cafe and Redbox Courier Service.
- Shipped sales tracking SaaS for Maxis and Mah Sing, and a CRM for FELDA.
- Ran the Linux and VPS layer — Nginx, SSL, HTTP/2, security hardening and load balancing.
- Guided 5 engineers and 2 designers through the full SDLC on backend and cross-platform mobile work.
Senior PHP Developer → Web Developer
- Progressed from web developer to senior programmer across e-commerce storefronts with POS integration, hotel and student management systems, MLM and bonus engines, and forex and scholarship platforms.
- Built mobile home security and automation, plus internal HR portals for leave, attendance and e-payslip.
Portfolio
Technical documentation: architecture and system write-ups. docs.kokweng.net
Architecture notes: design decisions and platform planning. plans.kokweng.net
Photo
Education
Diploma in Computing IT
APIIT College
Certificate in Computer Science
Institute Astin
Skills
Backend
- Node.js, Nest.js, Hono, Bun, Go
- GraphQL, REST, tRPC
- Microservices, CQRS, Saga
Data
- MongoDB, PostgreSQL, MySQL, Redis
- Prisma, Drizzle, Mongoose, pgvector
- Query and index tuning
Cloud & Infrastructure
- Docker, Kubernetes, Helm, ArgoCD
- AWS, GCP, Azure, AliCloud
- CI/CD, Prometheus, Grafana
Architecture
- Event-driven design (NATS, Kafka)
- Hexagonal and clean architecture
- API gateway patterns
AI Engineering
- Claude Code, Codex, Gemini Pro
- Openclaw, Hermes Agents
- Context, Graph & Harness engineering
- RAG pipelines
Frontend
- React, Vue 3, Angular, SolidJS
- TypeScript, RxJS
Certifications
- MongoDB Certified Developer
- MongoDB University — M101P, M101JS, M102
- Google Cloud Onboard
- AWSome Day — Amazon Web Services
Languages
- English: Professional
- Mandarin: Fluent, spoken & written
- Cantonese: Fluent, spoken
- Malay: Conversational