Portfolio

Marcus Khoo

Software Engineer

I build tech products. I ride my bicycle when I'm not building tech. I tinker my bicycle when I'm not riding.

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Location: Singapore
Email: marcuskhoo2@gmail.com

Profile

Professional summary

A concise overview of the practical, product-focused work I bring to software engineering teams.

Software engineer focused on creating reliable user experiences, clean interfaces, and well-structured web applications. I enjoy turning product ideas into maintainable systems, collaborating across teams, and shipping work that is easy to extend over time.

• Product-minded software engineering with a focus on clarity and maintainability.
• Comfortable collaborating across design, product, engineering, and operations.
• Interested in building pragmatic digital experiences that support real user needs.

Skills

Technical toolkit

A structured view of the technologies and disciplines relevant to my engineering work.

Programming Languages

Java
Python
C++
JavaScript

Frontend Development

React
Next.js
HTML5
CSS

Backend Development

Node.js
REST APIs
Springboot

Cloud & DevOps

Docker
CI/CD
GitHub Actions
Kubernetes
Jenkins

Databases

PostgreSQL
SQLite
MongoDB
S3

Testing

Cypress
Selenium
Karate
JUnit

Developer Tools

Git
VS Code
MCP
Claude
OpenAI API
Postman
Confluence
Copilot

Game Development

Unity
Perforce
Physics

Experience

Work history

A timeline of roles focused on application development, product delivery, and engineering quality.

Senior Software Engineer, DevOps Engineering

Visa Worldwide Pte Ltd

Jan 2026 — Jul 2026

Singapore

Built and maintained CI/CD tooling to accelerate containerization efforts across 90% of projects.
Leveraged Jenkins to automate CI/CD pipelines and streamline software delivery.
Developed Ansible-based CI/CD automation supporting .NET, Python, Spring Boot, and Node.js applications.

Software Engineer, Testing Engineering

Visa Worldwide Pte Ltd

Mar 2024 — Jan 2026

Singapore

Developed and maintained internal test automation tools to streamline testing processes and improve engineering efficiency.
Developed a Generative AI agent proof of concept to improve performance test engineering efficiency.
Collaborated with test engineers to identify pain points and develop features for end-to-end test automation, improving overall testing efficiency.
Developed an internal LoadRunner Enterprise MCP server to accelerate performance testing and troubleshooting.

Associate Software Engineer, Testing Engineering

Visa Worldwide Pte Ltd

Feb 2022 — Mar 2024

Singapore

Developed test scenarios, test plans, and test cases based on Business Requirement Documents to ensure comprehensive test coverage.
Automated end-to-end test cases, improving testing efficiency and reducing time to market.
Performed manual and automated test execution to improve software quality and testing efficiency.

Gameplay Programmer

Ubisoft Singapore

Jan 2019 — Nov 2021

Singapore

Collaborated with designers, programmers, and QA testers to enhance gameplay systems, functionality, and user experience.
Streamlined and optimized game data pipelines to improve development efficiency and workflow.
Debugged physics issues using middleware tools to improve system stability and performance.
Contributed engine improvements and features to enhance the project's integration pipeline and streamline development processes.
Implemented server-side optimizations to improve performance, efficiency, and reliability.

Education