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Oliver Sim - Visual Studio Code

Oliver Sim Choo Howe

Senior Full Stack Engineer at Maybank

Selangor, Malaysia
01

About

I'm a versatile full stack engineer with more than seven years of experience developing, integrating, and operating enterprise applications across frontend, backend, cloud, and DevOps.

I work end to end—from React and Angular interfaces to Java, Kotlin, and Node.js services, databases, delivery pipelines, and AI-enabled knowledge systems. I care about pragmatic architecture, dependable releases, and software that creates measurable operational value.

02

Experience

Mar 2025 — Present

Senior Full Stack Engineer

Maybank · Kuala Lumpur

  • Building an enterprise request and approval portal with React, Node.js, and MongoDB.
  • Modernizing workloads and supporting production migration from AWS to Azure.
  • Delivering contextual enterprise search with Azure OpenAI, Azure AI Search, documents, databases, and blob storage.
  • Shipped 20+ production releases using zero-downtime deployment practices.
Jul 2022 — Dec 2024

Senior Backend Engineer

EDAG Malaysia · Shah Alam

  • Designed high-throughput Spring Boot and Kotlin services for data-intensive workloads.
  • Optimized Oracle and PostgreSQL queries, schemas, and data access patterns.
  • Built delivery pipelines with Bamboo, Docker, Kubernetes, Helm, and OpenShift.
  • Implemented ETL services, RBAC, and JWT authentication while maintaining SonarQube quality gates above 80%.
Aug 2020 — Jul 2022

Full Stack Developer

Etiqa Insurance & Takaful · Kuala Lumpur

  • Delivered Angular, Node.js, Express, and MariaDB workflows for enterprise insurance operations.
  • Built SME BizCare across frontend and backend modules for more than 500 active users.
  • Automated XLSX reporting and credit-breach notifications to reduce manual operations.
  • Supported production releases, hotfixes, and application stability.
Feb 2019 — Jan 2020

IT Specialist · Full Stack Developer

iFAST Service Centre · Kuala Lumpur

  • Built reusable FAQ and translation modules with Angular and Java.
  • Enabled English and Chinese language switching in the Client 3.0 login portal.
  • Supported secure high-risk transactions through biometric soft-token features.
  • Streamlined staging and production delivery with Git and Jenkins.
03

Skills

Languages

TypeScriptJavaScriptKotlinJava

Frontend

ReactNext.jsAngularMaterialTailwind CSS

Backend

Spring BootNode.jsNestJSExpressHibernate

Data

MongoDBOraclePostgreSQLMariaDBMySQL

Cloud & AI

AzureAzure OpenAIAI SearchFoundryAWS

DevOps

KubernetesDockerOpenShiftHelmArgo CDGitHub Actions
04

How I Work

I bring a strong end-to-end delivery mindset: clarify the problem, choose maintainable technology, build with quality gates, automate delivery, and stay close through production stabilization.

That approach has helped me deliver scalable cloud migrations, high-volume services, enterprise portals, search experiences, and production automation across banking, automotive, insurance, and wealth technology.

05

Education

Bachelor of Computer Science (Honours), Taylor's University Lakeside Campus, 2016–2019. Graduated with a CGPA of 3.88/4.00.