Arvato Systems Malaysia is a part of Arvato Systems, providing IT solutions and services to support digital transformation, focusing on industries like media, retail, utilities, and healthcare.

Key Responsibilities

• Contribute to the full software development lifecycle, including requirements analysis, feature design and implementation, code reviews, automated testing, debugging, performance optimization, and production support.
• Develop and maintain enterprise applications using C#, .NET, ASP.NET Core, Azure, SQL Server, and SharePoint, delivering scalable and maintainable solutions.
• Collaborate with cross-functional teams in an Agile Scrum environment, participating in sprint planning, daily stand-ups, reviews, and retrospectives while producing technical documentation such as database schemas, sequence diagrams, and system flow diagrams.

Key Initiatives, Innovation & Deliverables

• AI Leadership & Certification: Led a 5-member team to build an AI Onboarding Platform for 6 months. Appointed business unit AI Champion (2026). Drove team-wide AI adoption by engineering standardized .github/ context instruction files, system rules, and agent skills to optimize Copilot accuracy and token efficiency. Shared weekly Copilot knowledge-sharing sessions for 16 engineers, monthly tech & security talk. Competed in the Arvato Systems Malaysia: AI Hackathon 2024, and earned the Udacity AI Product Manager Nanodegree (2026).
• AI & MLOps POCs: Developed a multimodal AI archival platform implementing RAG with Azure AI Search and Azure OpenAI using .NET 10 C# (2026), engineered an MLOps forecasting system tracking experiment drift via MLflow and Azure ML (2025), and architected and developed an AI Onboarding Platform using Blazor and and Vertical Slice Architecture (2026).
• Internal Tooling & Observability: Designed and built a self-hosted DevOps intelligence dashboard integrating GitHub REST APIs for real-time CI/CD visibility and operational automation across multi-repository microservice environments, featuring workflow health monitoring, branch propagation drift analysis, bulk workflow orchestration, and stale branch cleanup tooling.
• CI/CD & DevOps Automation: Reduced CI pipeline times by 66% via automated test-skipping and cut workflow execution times by 50% by migrating 10+ pipelines from Azure DevOps to GitHub Actions.
• Security & Architecture: Refactored the core security layer to resolve critical IDOR vulnerabilities, introduced secure data-masking policies for logging compliance, and advocated for modern design patterns (Strategy/Factory) and unit testing standards to elevate overall code quality.

Technology Stack

• Languages & Frameworks: C#, .NET Framework 4.8, .NET 8, .NET 10, Web API, Razor Pages, Blazor
• Backend Tools: Swagger (Swashbuckle), Hangfire, Serilog, Seq
• Databases: SQL Server, Entity Framework Core 8, Dapper
• Cloud & DevOps: GitHub, Azure DevOps, Azure Function, Azure Service Bus, Azure Key Vault, Azure Blob Storage, Azure OpenAI, Azure Document Intelligence, Azure AI Language, Azure AI Search
• Monitoring & Testing: Azure Application Insights, NUnit, MsTest (Unit Test, Integration Test)
• Frontend: JavaScript
• Design Patterns & Principles: Monolith, Microservices, Factory Pattern, Strategy Pattern, Query Object Pattern, Repository Pattern, DRY, YAGNI, SOC, OOP, Dependency Injection (DI), MVC, vertical slices architecture
• Others: Scrum, Agile, Confluence, MermaidJS, SonarQube / SonarCloud, Google Colab, Python, Microsoft Aspire

• Jul 2026: Created a responsive Bible Study Suite application - An interactive, browser-based app that brings Scripture to life through visual tools — timelines, book dashboards, character profiles, and geographic maps. Optimized the interface for mobile and desktop learning experiences.
• Oct 2025: Implemented an end-to-end MLOps pipeline in Azure Machine Learning and Azure ML Studio using the Azure ML SDK and MLflow; automated data preparation, model training, and model registration. Established experiment tracking, environment versioning, and compute orchestration for reproducible model development and retraining. | Code.
• May 2025: Developed a configurable RAG pipeline in Python for HR policy question answering, utilizing Sentence Transformers for embeddings, ChromaDB for vector storage, and the LM Studio API. Implemented dynamic model selection for both embedding generation and answer synthesis, enabling seamless switching between models such as Zephyr and Llama 3.2, enhancing flexibility and adaptability. Employed Langchain's RecursiveCharacterTextSplitter with prioritized separators for effective text chunking and similarity search for relevant context retrieval | Code.
• May 2025: Configured and deployed LM Studio with Ollama 3.2 API server locally, serving the llama-3.2-3b-instruct model; developed a Python client to connect via HTTP API and retrieve AI-generated responses | Demo | Code.
• Jan 2025: Developed a POC using Python and Retrieval-Augmented Generation (RAG) with a Pinecone-based assistant integrated with LLM GPT-4. Enabled natural language querying of PDF documents, including ebooks and HR policies, with responses strictly derived from uploaded content | Demo.
• Jan 2025: Developed a POC using the BART transformer model with Hugging Face to summarize PDF text. Integrated PyMuPDF for extraction, Streamlit for an interactive UI, and optimized text processing to address encoding challenges | Demo.
• Oct 2024: Developed a POC which highlights the asynchronous nature of order handling and the integration of Azure Service Bus for messaging using Azure Function App .
• Jun-July 2024: Deployed an eShop using .NET Aspire to both local and Azure environments. Utilized Azure Developer CLI (azd) to provision 15 Container Apps within 11 minutes .
• May 2024: Deployed a minimal starter pipeline in Azure DevOps to build, test, and deploy an ASP.NET Core project, utilizing stages for artifact download and deployment to an Azure Web App.
• July-Aug 2023: Built a Dagster ETL data pipeline in Python, scheduled to run hourly. Fetched data from Hacker News API and generated CSV, and read data from SQL Server.
• June 2023: Configured eShopOnContainers with Azure Kubernetes Service (AKS) for CI/CD using GitLab Actions. Integrated Azure Active Directory for authentication.
• June 2023: Deployed .NET 7 eShopOnContainers to Local Kubernetes using Docker Desktop and Helm.
• May 2023: Built a mock eCommerce microservices solution using GraphQL, Azure Functions, and Azure Service Bus.
• May 2023: Developed Azure Functions demo projects (Blazor Server + Web API). Integrated Azure AppInsights for monitoring.
• Mar 2023: Optimized online resume for 100/100 GTmetrix performance and 90/100 in Pingdom.
• Mar 2023: Deployed a Jekyll-based website with GitHub Actions CI/CD.
• Feb 2023: Built a mock Ethereum blockchain Web API using .NET 7 and EF Core in 3-4 days.
• Nov 2022: Automated code reviews in Azure DevOps CI pipeline with SonarQube and SonarCloud.
• Aug 2022: Deployed .NET 6 Web API to Azure using GitHub Actions (CI/CD).
• July 2022: Implemented and monitored automated tests in Azure DevOps CI/CD pipeline.
• May 2022: Deployed Task Tracker API in .NET 6 and refactored Task Tracker React app for API consumption.
• Oct 2021: Integrated SpecFlow + Living Doc in .NET 6.
• July 2021: Implemented SonarCloud (Code Analysis) with GitHub Actions .
• Jun 2021: Migrated online resume to Pug + SCSS, reducing file size by 40% and improving maintainability.
• Apr 2021: Parsed 1,000 complex XML files into Elasticsearch using NEST C# in 15 minutes with advanced search options.
• Feb 2021: Completed take-home technical assignment in 24 hours (given 48 hours). Built a .NET Core Web API service to upload, parse, and query transactions from XML & CSV.
• Jan 2021: Parsed 800 XML files (500MB) into MongoDB using Node.js in 1 minute . Parsed 1,800 XML files (4.7GB) into MongoDB using C# in 9 minutes. Ingested XML files into Elasticsearch using Node.js & Python.
• Nov-Dec 2020: Built a JWT-based CRUD web app (Back-end: .NET Core 3.1, Front-end: Vanilla JS).

Quantum Corporation sells scale-out storage, archive, and data protection solutions for capturing, sharing, and preserving digital assets in physical and virtual environments.

Key Responsibilities

• Coding & Development: Write clean, efficient, and maintainable code.
• Testing & Debugging: Write automated unit and integration tests, and fix bugs to ensure software quality.
• Collaboration: Work with cross-functional teams, including designers, product owners, and QA engineers.
• Documentation: Create technical documentation like database schema diagrams, sequence diagrams, and flowcharts for future reference.
• Performance Optimization: Improve the efficiency of applications.
• Automation: Automate manual processes by implementing generic background microservices.
• Data Migration: Perform ETL data migration to ensure seamless data transfer across systems.

Implemented Solutions

• Automated Fulfillment: Developed a background microservice to reduce manual processing.
• IT Asset Management: Built a CMDB system for better IT asset tracking.
• Automated Testing: Introduced and implemented automated unit and integration tests.
• ETL Migration: Developed a .NET 6 ETL service to migrate data from MS Dataverse to SQL Server, cutting Azure costs by ~$3,000/month.
• Performance Optimization: Upgraded ETL migration (40M records) from .NET 6 to .NET 8, achieving:
  • 16% faster bulk operations (7.3M records)
  • 30% faster smaller transactions (630K records)
• Process Automation: Built a static HTML email utility and Power Automate workflows to streamline internal tasks.

Extra Initiative

• Tech Exploration: Researched SonarQube (code quality) and Dagster (data orchestration) for future improvements.

Accomplishments

• Cost Reduction: Cut Azure costs by ~$3,000/month through ETL optimization.
• Performance Gains: Boosted ETL efficiency by up to 30% in .NET 8 with no added infrastructure cost.

Technology Stack

• Languages & Frameworks: C#, .NET 6, ASP.NET Razor Pages, MVVM
• Backend Tools: Hangfire, Entity Framework Core
• Databases: SQL Server, MS Dataverse
• Monitoring & CI/CD: Azure App Insights, Health Checks, GitHub Actions

AFFIN Hwang Investment Bank Berhad provides financial services. The Company offers stock brokerage, asset management, treasury bonds, currency exchange, financial advisory, and investment banking services.

Key Responsibilities

• Coding & Development: Write clean, efficient, and maintainable code.
• Testing & Debugging: Write automated unit tests, automated integration tests, and fix bugs to ensure software quality.
• Collaboration: Work with solution architect, CTO, front-end tech lead, back-end tech leads, business analyst, UI/UX designer, data engineer, and end-users.
• Documentation: Create technical documentation like database schema diagram, sequence diagram, and flowchart for future reference.
• Performance Optimization: Improve the efficiency of applications or services.
• Interviewing: Conduct interviews for software engineers.

Implemented Solutions

• Microservice Development: Replaced a monolithic legacy system (.NET Framework 4.x) with a microservice-based automated data ingestion solution using .NET Core 3.1, improving scalability and efficiency.
• Performance Optimization: Enhanced the performance of eInvest Go and the Retail Online Platform by optimizing both front-end and back-end services for better responsiveness and reliability.

Extra Initiative

• Process Improvement: Initiated and developed productivity tracking reports in Jira to monitor team performance.
• Versatility: Transitioned from backend to full-stack development by successfully taking over frontend responsibilities in Vue.js, despite the challenging learning curve.

Accomplishments

• Consistently High Performance: Consistently exceeded expectations in performance appraisals from Aug 2020 to Dec 2022.
• Business Impact: Improved system reliability through REST API development and automated testing, leading to a 20% increase in online trading account openings (eInvest GO).

Technology Stack

• Backend (70%): C# Web Api, .NET Framework 4.x, .NET 2.2, .NET Core 3.1 , EF Core 3 , NUnit, Xunit , Specflow and Living Doc.
• Frontend (30%): VueJs (SFC), Vuex, Javascript, Jquery, Bootstrap, Pug, Scss, NPM, Gulp, Razor Pages.
• Others: Git, Atlassian Jira, Confluence, Azure DevOps, IIS, Figma, Elastic Search, Kibana, NEST, Google Cloud Storage (Google Cloud Platform), mermaidJS, MarkMap.

Eduvo is a vocational school for IT and Business courses.

Key Responsibilities

• Design and develop training programme (Prof. Diploma in Software Engineering).
• Conduct classroom training for software engineering courses: Object-Oriented Programming, Database Design, Web Programming, System Analysis and Design, Data Structure and Algorithm, and Software Architecture.
• Design, develop, and maintain School Management System.
• Lead Education & Operation division.

Implemented Solutions

• Developed a School Management System from scratch using C#, including an automated timetable generation feature that schedules all courses for the entire year and assigns each course to a lecturer.

Accomplishments

• I pioneered and was the first to design and develop the Software Engineering Prof. Diploma programme.
• Software engineering student enrollment grew by 300%, with graduates now employed as full-time programmers in software houses.

Technology Stack

• Backend (70%): C# MVC, Entity-Framework (Code-First), SQL, LINQ
• Frontend (30%): Javascript, CSS, HTML.

GHL is a leading payment service provider and one of the top merchant acquirers in the ASEAN region. We provide world-class payment services and solutions. My job scope are:

• Reported to CTO.
• Created complex monthly IT Resource Utilization report for CTO.
• Managed Product Management department.
• Ensured product gets certified, especially Terminal Quality Management (TQM).
• Handled software and product documentation, i.e user guide, sequence / process flow diagram and matrix diagram.
• Ensured proper source control and software repositories backup and replicated for all the regions (Malaysia, Thailand, Philipinnes and Wuhan).
• Planned and coordinated training for Level 1 and Level 2 Support.
• Maintained maintenance agreement.