Marco Vincent Ong

Full-Stack Web Developer with 10+ years of professional experience, including direct, hands-on WordPress theme and plugin development alongside custom PHP-coded solutions. Advanced capability in HTML, CSS, and JavaScript, with a strong track record building APIs, integrating third-party systems, and managing databases across enterprise and client projects. Comfortable independently scoping, building, testing, deploying, and maintaining web solutions end-to-end, without depending on page builders or pre-existing plugins alone.

Experienced improving website architecture, performance, and security, with a consistent focus on producing reliable, well-documented work. Uses AI-assisted development tools daily, including ChatGPT, to improve efficiency across development tasks.

Outsource Senior Full Stack Developer at Express in Music / Usea PTE LTD (2024-05 – Present)

• Develop and maintain full-stack web applications using TypeScript, Next.js, React, and TailwindCSS on the frontend, with tRPC, PostgreSQL, and Temporal powering backend workflows, deployed on AWS using Docker for containerisation.
• Build and integrate RESTful APIs and third-party services to support CMS and client-facing website functionality.
• Use AI-assisted development tools daily, including ChatGPT, to accelerate implementation and troubleshooting.
• Independently manage requirements gathering through delivery, collaborating directly with business stakeholders.

Senior Consultant / PHP Developer at Capgemini (2021-05 – 2024-12)

• Maintained and enhanced enterprise PHP applications, delivering new features and resolving production issues under Agile delivery practices.
• Performed code reviews, debugging, testing, and deployment support to improve overall code quality and system reliability.

Software Engineer at ShopFrontPro (2021-02 – 2021-04)

Enhanced e-commerce platforms built on CS-Cart with Azure MySQL infrastructure, improving performance and reliability — direct experience with transactional customer journeys.

Senior Software Engineer at Zemsoft Corporation (2017-05 – 2021-02)

• Led development of ERP, CRM, and Customer Service systems using Yii2 and MySQL, applying OOP and MVC principles.
• Designed and optimized SQL queries and database schemas to improve application performance.

Software Engineer at Zemsoft Corporation (2015-10 – 2017-04)

Developed ERP and production systems end-to-end, from requirements gathering through deployment and production support.

Full Stack Developer (Freelance) at Freelance Software Development (2013-04 – 2015-07)

• Developed and customized WordPress themes and Vue.js front-ends for client websites, deploying via cPanel, FTP (FileZilla), and shared hosting environments.
• Built clinic, HRIS, payroll, enrollment, and business management systems from scratch, managing full project lifecycle independently for individual clients.

Software Engineer at JIMAC Inc. (2011-07 – 2013-02)

Maintained POS software and supported production deployments using C++/Qt and MySQL, including payment and transaction handling.

BS in Computer Science – AMA University Online

BS in Computing, Major in Information Systems – Technological University of the Philippines