Eugene S.
Full Stack Developer
Actively lookingNew to PlatformAbout
Eugene Subrado Jr. is a Full Stack Developer with 10 years of experience designing, building, and maintaining production web applications across React, Next.js, jQuery, Node.js, and Python. Based in Dumaguete City, Philippines, he specializes in end-to-end development. From front-end architecture to REST APIs, databases, and cloud deployment.
Over his career at Xtensa Inc. (Quartica), Eugene grew from Software Engineer to Senior Software Engineer / Technical Lead, where he led a large-scale migration converting 70% of a 4,000-user enterprise application from jQuery to React, implemented RBAC and OAuth 2.0 multi-factor authentication, and mentored junior developers on tooling and best practices. Most recently, as a Full Stack Developer / Project Manager for Maks Enterprises, he improved an eCommerce site's performance score from 20% to 80% and introduced AI-assisted code review tooling that nearly doubled his team's sprint output.
Eugene holds a Bachelor of Science in Computer Engineering from Silliman University and is a certified Meta Front-End Developer (Coursera). He builds and maintains several personal full-stack projects, including a real-time analytics portfolio platform and an AI-powered bill simplifier, and is an active user of AI-assisted development tools like Claude and Codex. He's passionate about clean architecture, measurable performance improvements, and helping teams grow through mentorship.
Why hire me
I bring ten years of full stack experience, but more importantly, I bring a track record of ownership — I don't just implement what's asked, I identify problems and drive the fix. I took a WordPress site from a 20% to 80% performance score by leading the refactor myself. I led a 70% jQuery-to-React migration on a live application serving 4,000+ users without disrupting the product. And when I saw our team could move faster, I introduced AI-assisted code review tooling that nearly doubled our sprint output — from 25 to 60 story points. On top of that, I've spent years mentoring junior developers, so I don't just build — I help teams get better. And I stay current: I'm comfortable across React, Next.js, Node.js, Python/Flask, and I actively use AI tools like Claude and Codex to work faster and catch issues earlier. So you're not just getting a developer — you're getting someone who takes initiative, delivers measurable results, and makes the people around them better too.
Experience
Project Manager / SCRUM Master
Maks Enterprises · 2025 — 2026Oversaw software development projects using Jira and Agile methodologies as SCRUM Master. Coordinated efforts among developers, QA teams, and stakeholders to manage CRM and e-commerce improvements (MAKRO ERP). Facilitated stakeholder demonstrations and converted business needs into technical requirements. Directed feature planning, sprint implementation, and release processes for WordPress, WooCommerce, and customized web applications.Senior Front End Engineer
Xtensa Inc. (Quartica) · 2023 — 2025Contributed to the development of core front-end functionalities and API integrations for the Safety Data Sheet (SDS) module using Single Page Application (SPA) architecture, React, jQuery, Bootstrap, and Kendo UI, serving over 5,000 users worldwide. Led knowledge transfer and mentoring programs for junior developers, offering guidance on development methodologies, tools, optimization methods, and effective team collaboration.Software Engineer
Xtensa Inc. (Quartica) · 2015 — 2023Focused on developing and maintaining web applications and pages tailored for the pharmaceutical and chemical sectors. Engaged in the creation of SharePoint-based web applications, including a list aggregator utilizing HTML, CSS, Bootstrap, jQuery, and CSOM to enhance data retrieval and display. Upgraded legacy client training platforms by refreshing outdated jQuery and Kendo UI setups.Customer Retention Team Member
Qualfon Philippines Inc · 2014 — 2015Handled customer inquiries within a customer retention framework, focusing on resolving issues effectively to uphold quality standards.IT Internal Auditor
Silliman University · 2013 — 2014Provided technical support and troubleshooting for mobile devices and telecommunication services, addressing customer concerns while maintaining service quality. Developed effective communication and problem-resolution abilities by simplifying technical concepts for user guidance.
Skills & Expertise
Education
- Bachelor of Science in Computer EngineeringSilliman University, Philippines · 2002 — 2007