Wei Hao•Platform & Workflow Automation • Singapore
Automating complex workflows &engineering systems that scale.
I engineer platform automation and internal tooling that eliminates operational friction. Leading engineering squads in enterprise banking, I turn convoluted manual processes into clean, resilient systems.
Featured Systems
Featured Systems & Engineering Blueprints
Modular platforms, component libraries, and architectural blueprints engineered for composability, security, and local AI workflows.
Lego-Block Systems• Enterprise Systems
Production FrameworkTalosUI
Composable enterprise UI component library and design token system.
The Problem & Friction
- Teams repeatedly rebuilt ad-hoc tables and form controls from scratch, fragmenting UI and slowing sprints.
- Inconsistent keyboard navigation and accessibility across internal tools caused operator fatigue and data-entry errors.
Legacy Approach: Bespoke UI components built per project without shared design tokens or accessibility standards.
Architecture & Flow
Design Token SystemToken Engine
Unified tokens for color palettes, spacing, typography, and dark/light modes.
Accessible PrimitivesComponent Primitives
Core buttons, inputs, dialogs, and badges built with full keyboard accessibility.
High-Density PatternsPattern Assembly
Virtualized data grids, advanced filter bars, and multi-step form workflows.
Package DistributionMonorepo Package
Monorepo NPM package enabling squads to spin up complete operator consoles in hours.
Speed & Velocity
+70% Scaffolding Speed
Scale & Delivery
40+ Modular Components
Governance & Reliability
100% WCAG AA Accessibility
Lego-Block Systems• Enterprise Systems
Production ArchitectureIcarusIAM
Pluggable RBAC/ABAC authorization modules with Maker-Checker governance.
The Problem & Friction
- Services implemented fragmented authorization checks, introducing security inconsistencies and audit exposure.
- Enforcing Maker-Checker segregation of duties required hundreds of lines of duplicate boilerplate in each backend service.
Legacy Approach: Dispersed, hardcoded permission checks across microservices without unified audit trails.
Architecture & Flow
Token & Claim IngestionIngestion Layer
Normalizes OAuth2 / OIDC tokens and resolves user attributes and tenant roles.
Policy EvaluationPolicy Engine
Fast evaluation of RBAC and ABAC rules, permission trees, and spend thresholds.
Maker-Checker GateApproval Engine
State machine routing sensitive actions to designated approvers with segregation of duties.
Immutable Audit LedgerAudit Store
Structured, cryptographically traceable event logging for compliance audits.
Speed & Velocity
< 1 Day Service Onboarding
Scale & Delivery
< 10ms Authorization Latency
Governance & Reliability
Zero Audit Findings
RAG & AI Lab• AI Research & Lab
Research & Lab EngineLocal-RAG
Agentic local RAG and deep research engine with LightRAG dual-level graph reasoning.
The Problem & Friction
- Enterprise data sovereignty prohibits sending proprietary technical documentation and queries to public cloud LLMs.
- Naive vector retrieval ignores multi-hop entity relationships and community structures, producing fragmented answers.
- Traditional RAG pipelines lack self-correction, blindly generating answers from weak or irrelevant context.
Legacy Approach: Static "Embed-Search-Generate" pipelines with unverified chunk matching and zero retrieval feedback loops.
Architecture & Flow
Layout-Aware Ingestion & Critic KGIngestion & KG Worker
Small-to-Big semantic chunking with coreference resolution; validates extracted triplets via an Actor-Critic fact-check loop.
Agentic Planning & HyDEAgentic Planner
Decomposes complex multi-topic questions into parallel sub-queries and synthesizes hypothetical document vectors.
Dynamic Multi-Tool DispatchTool Orchestrator
Intelligently routes sub-queries across Neo4j graph traversal (N-hop entities & community summaries), local vectors, and web/ArXiv search.
Corrective RAG (CRAG) & SynthesisCRAG & Ollama Engine
Grades retrieved context, triggers web search to fill knowledge gaps, and verifies answer claims against source facts before streaming.
Speed & Velocity
-80% Research Latency
Scale & Delivery
100% Offline & Air-Gapped
Governance & Reliability
Zero Cloud Token Cost
Writing & Thoughts
Articles & Engineering Notes
Reflections on frontend architecture, eliminating UI race conditions, modular system design, and pragmatic engineering trade-offs.
April 2026 • 4 min read
👻 Killing Ghosts: Master API Request Cancellation in Angular
A practical guide to handling stale in-flight HTTP requests, avoiding out-of-order race conditions, and using RxJS cancellation operators effectively in real-world frontend applications.
AngularRxJSFrontend Performance
Read Article
May 2026 • 1 min read
Why the Modular Monolith is the Pragmatic Developer’s Best Friend
Before jumping into distributed microservices and the operational overhead that comes with them, a well-architected modular monolith gives you speed, simplicity, and clear domain boundaries.
System DesignArchitecturePragmatism
Read Article
Design Systems CollectiveMay 2026 • 1 min read
The Moment Everything Breaks: The Toggle Switch Test for Design Systems
How to stress-test your design system architecture. Why CSS variables are essential for dynamic runtime theming, and the exact trade-offs when transitioning from legacy preprocessors.
Design SystemsCSS Custom PropertiesUI Architecture
Read Article
Career History
Engineering Leadership & Work Experience
Leading engineering squads, building platform automation, and architecting resilient mission-critical systems.
United Overseas Bank (UOB)
• GIPS, Service AutomationPromoted in 2026
October 2023 – Present
VP1 Site Reliability Engineer — Engineering Lead & Product Manager
Leading 4 Software Engineers & 1 DevOps Specialist
Architected and launched an enterprise platform automation and CMDB portal.
Led engineering and product delivery for an automated operations platform managing enterprise infrastructure inventory and eliminating manual operational toil.
Key Deliverables
- Built a modular UI component library with Angular and AgGrid Enterprise for high-density virtualized data grids.
- Designed an enterprise RBAC engine integrated with OAuth JWT and LDAP for access governance.
- Engineered a CMDB handling >200,000 records using multi-threaded chunked ingestion, Redis caching, and server-side pagination.
- Codified complex approval workflows with Maker-Checker verification and document management.
- Integrated core enterprise tools including BMC Remedy, Control-M, Jira, Exchange Web Services, and VMware vSphere.
Integrated Enterprise Ecosystem
BMC Remedy ITSMBMC Operations ManagementBMC Control-MJira APIExchange Web ServicesVMware vSphere
Technologies:AngularTypeScriptDjango / PythonASGI / DaphneAgGrid EnterpriseRedisOAuth JWT & LDAPvSphere SDK
United Overseas Bank (UOB)
• GIPS, Service AutomationOctober 2023 – Present
Project Manager — Network Performance Monitoring (NPM)
Managing a Team of 2 Network Engineers
Led enterprise rollout of Network Performance Monitoring (NPM) and packet telemetry.
Directed vendor evaluation, datacenter deployment, and application topology onboarding for proactive network degradation analysis and bottleneck isolation.
Key Deliverables
- Orchestrated physical datacenter deployment and hardware appliance installations across production facilities.
- Authored Helm Charts to standardize containerized daemonset deployments across Red Hat OpenShift.
- Mapped enterprise application network topologies onto the platform for Production Support squads.
- Configured packet capture decoders with vendor engineers to translate raw traffic into actionable telemetry.
- Maintained continuous uptime and proactive degradation alerting for critical banking channels.
Technologies:Helm ChartsKubernetes / OpenShiftDaemonsetsPacket DecodersDatacenter Appliances
Credit Suisse AG
• Credit Risk OfficeApril 2022 – October 2023
Software Engineer
Engineered regulatory credit risk engines, mortgage stress-testing modules, and graph dashboards.
Delivered mission-critical regulatory risk and stress-testing services across AU, SG, and HK jurisdictions while supporting cloud migrations.
Key Deliverables
- Built regulatory Mortgage Reporting and Stress Testing modules across AU, SG, and HK jurisdictions.
- Engineered automated risk calculation engines computing LTV, debt servicing thresholds, and interest-rate sensitivity scenarios.
- Developed FX Financial Dashboard modules using Neo4j Fabric and Cypher graph queries to visualize multi-currency exposures.
- Migrated microservices onto Red Hat OpenShift utilizing Spring Cloud Configuration.
- Provided production triage and operational support for core Risk Event Processing modules.
Technologies:AngularReactSpring Boot (Java)Neo4j Fabric & CypherRed Hat OpenShiftSpring Cloud
MoneyOwl Pte Ltd
• EngineeringRecognized as Top Performer (2018)
August 2018 – March 2022
Software Engineer
Engineered financial planning engines, statutory CPF projections, and advisory microservices.
Architected foundational advisory engines modeling statutory retirement frameworks and national digital identity integrations.
Key Deliverables
- Engineered Singapore CPF projection engine modeling OA, SA, MA, and RA compounding rules, contribution ceilings, and housing limits.
- Built wealth projection and fee calculation microservices for automated client retirement reports.
- Implemented 2FA and direct integration with Singapore national digital identity (Singpass MyInfo APIs).
- Automated ETL data extraction and transformation pipelines in Python for portfolio rebalancing.
Technologies:Spring Boot (Java)AngularPythonSingpass MyInfo2FA / SecurityPostgreSQL
Technical Domains
Skills & Core Toolchains
Technologies and architectural patterns honed across enterprise platform automation, credit risk engines, and financial planning systems.
Core Domain
Frontend Engineering & High-Density UI
Scalable Component Architecture, Design Systems & High-Performance Grids
Key Competencies
- Design System componentization and token-based styling
- High-density virtualized data grids with AgGrid for live data manipulation
- Signal-based and reactive state management across complex user workflows
- Cross-framework modularity across Angular and React ecosystems
Tools & Technologies
Angular (TypeScript)ReactJS (TypeScript)AgGrid EnterpriseJavaScript / TypeScriptCustom CSS TokensHTML5 / CSS3
Core Domain
Backend Systems & Enterprise Microservices
Mission-Critical APIs, Resilient Microservices & Asynchronous Task Engines
Key Competencies
- Full-stack API design and microservice architecture for complex operational environments
- Asynchronous task workers and scheduled batch processing pipelines
- High-throughput web servers and ASGI/WSGI gateway configurations
- Robust workflow state machines with document uploads and approval flows
Tools & Technologies
Django (Python)Spring Boot (Java)Node.jsGolangDaphne / ASGINginx & Apache
Core Domain
Data Architecture, CMDB & Knowledge Graphs
Relational Schemas, Property Graph Traversal & High-Scale Caching
Key Competencies
- Configuration Management Database (CMDB) handling >200k entries with chunking and multi-threading
- Graph query optimization and relationship traversal with Neo4j Fabric and Cypher
- High-concurrency caching, search, filtering, and server-side pagination with Redis
- Multi-engine database administration spanning relational and NoSQL paradigms
Tools & Technologies
Neo4j (Cypher & Fabric)PostgreSQLMySQLOracle DBMongoDBRedis Caching
Core Domain
Cloud Infrastructure, Containers & DevOps
Kubernetes Orchestration, OpenShift Migrations & SRE Tooling
Key Competencies
- Container orchestration and microservices deployment across OpenShift and Kubernetes
- Helm Chart development for streamlining cluster-wide daemonset deployments
- Infrastructure automation, configuration management, and server fleet provisioning
- Direct host virtualization management via vSphere SDK and physical datacenter coordination
Tools & Technologies
KubernetesRed Hat OpenShiftHelm ChartsAnsible AutomationDockervSphere SDK
Core Domain
Agentic AI & Knowledge Retrieval (RAG)
Autonomous Agentic Workflows, Dual-Level Graph RAG & Local Inference
Key Competencies
- Multi-stage agentic reasoning, task decomposition, and Corrective RAG (CRAG)
- Dynamic tool-calling orchestration across vector search, Neo4j graphs, and web APIs
- LightRAG paradigm implementation blending entity-based retrieval with community summarization
- Robust ingestion pipelines featuring semantic chunking and automated coreference resolution
Tools & Technologies
LlamaIndexOllama (Gemma, Nomic Embed)Neo4j (Cypher)Python 3.xVector StoresLocal Quantized LLMs
Core Domain
Security, Governance & Enterprise Integrations
Zero-Trust RBAC, Regulatory Audit Readiness & Enterprise Tooling
Key Competencies
- Enterprise Role-Based Access Control (RBAC) integrated with OAuth2 JWT and LDAP
- Deep 3rd-party enterprise ecosystem integrations (ITSM, batch schedulers, email approvals)
- Two-Factor Authentication (2FA) and national digital identity (Singpass MyInfo) integrations
- Audit-ready regulatory risk reporting and stress testing pipelines for Tier-1 banks
Tools & Technologies
OAuth2 / JWTLDAP AuthenticationBMC Remedy ITSMBMC Control-MJira APIExchange Web Services
Engineering Principles
Designing for Clarity, Velocity & Rigor
Enterprise software doesn't have to feel like an uphill battle. Here are the core principles I rely on to build systems that respect operators' focus while maintaining mission-critical reliability.