Choo Jonathan XiTong
Cloud Engineer · AWS Certified Cloud Practitioner

jonathanxtchoo@gmail.com

LinkedIn

+65 97333150

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Projects

Cloud Resume (AWS) – Frontend + Backend, Terraform (in-progress)

Tech Stack: HTML/CSS, JavaScript · S3, CloudFront (HTTPS), Route 53 · API Gateway, Lambda (Python), DynamoDB, Terraform
  • Built and deployed a static S3 website distributed via CloudFront (HTTPS) with ACM, delivering secure, globally available hosting.
  • Configured Route 53 DNS for branded domain and clean URLs, improving professionalism and UX.
  • Developed a serverless visitor counter with API Gateway, Lambda, and DynamoDB for real-time analytics.
  • Wrote Python unit tests to validate Lambda logic and enforce least-privilege IAM, improving reliability and security.
  • Automating infrastructure with Terraform for version-controlled, repeatable deployments (in progress).

Experience

System Analyst – Total eBiz Solutions Pte Ltd (TeBS)

Jun 2025 – Present · Singapore · CRM / Microsoft Dynamics 365 & Power Platform
  • Delivered CRM development and change management for Dynamics 365 Customer Insights – Journeys and Power Platform.
  • Ran sandbox testing and business impact analysis for new features, enabling safe adoption.
  • Created user documentation and UAT guidance, reducing onboarding time and increasing adoption.
  • Integrated Dynamics 365 with SharePoint/Outlook via Power Automate, improving cross-team workflows.

Mobile App Developer (Intern)

May 2024 - Jan 2025 · .NET MAUI (C#), Flutter (Dart)
  • Built cross-platform features with UI components, state management, and API integrations.
  • Resolved bugs during sprint QA cycles, improving stability and reducing regressions.
  • Wrote developer docs and UAT guides, enabling smoother handoffs and maintainability.