I'm a Full Stack Developer (React/TypeScript) with 9+ years of experience building SaaS web and mobile applications. I specialize in React, React Native, Next.js, TypeScript, and PostgreSQL, with hands-on work across dashboards, system integrations, analytics, and data-rich user interfaces. I'm an open-source contributor and maintainer of a public NPM utilities package.…

Devlin Pajaron

I'm a Full Stack Developer (React/TypeScript) with 9+ years of experience building SaaS web and mobile applications. I specialize in React, React Native, Next.js, TypeScript, and PostgreSQL, with hands-on work across dashboards, system integrations, analytics, and data-rich user interfaces. I'm an open-source contributor and maintainer of a public NPM utilities package.…

Available to hire

I’m a Full Stack Developer (React/TypeScript) with 9+ years of experience building SaaS web and mobile applications. I specialize in React, React Native, Next.js, TypeScript, and PostgreSQL, with hands-on work across dashboards, system integrations, analytics, and data-rich user interfaces.

I’m an open-source contributor and maintainer of a public NPM utilities package.

See more

Skills

Experience Level

JavaScript
Expert
React JS
Expert
TypeScript
Expert
PostgreSQL
Expert
Node.js
Expert
HTML5
Expert
React Native
Expert
SQL
Expert
AWS
Expert
CSS
Expert
tRPC
Expert
Tailwind
Expert
Docker
Expert
See more

Language

English
Fluent

Work Experience

Web Developer at QIMA
April 1, 2016 - July 1, 2016
Developed a configurable report generation tool for the E-learning department using AngularJS and CodeIgniter, enabling dynamic creation and export of customized reports.
Front-End Developer at QIMA
July 1, 2016 - August 1, 2019
Built and maintained a complex booking platform with dynamic, rule-based service flows using AngularJS and SCSS, supporting multiple service types and configurable booking logic. Developed data visualization features using D3.js, later supporting migration toward Tableau-based reporting for standardized business analytics. Integrated third-party payment gateways (Adyen, PayPal), implementing secure transaction flows and handling frontend payment state management. Collaborated with DevOps on release and deployment processes, supporting production rollouts via Jenkins pipelines and manual SSH-based deployments. Implemented internationalization (i18n) across the UI.
Senior JS Engineer II at Glacier Grid
August 1, 2019 - August 1, 2024
Supported microservices migration while maintaining front-end applications built with React and TypeScript. Delivered data visualization features with Chart.js and implemented form workflows using React Hook Form across multiple application areas. Optimized data graph frontend performance when loading multiple data points. Integrated Mixpanel tracking for high-impact user actions and managed PostgreSQL SQL generation and migrations with TypeORM. Designed and implemented RESTful APIs with NestJS. Architected reusable UI components based from Figma designs using our own company design system.
Mobile FE Lead (Part Time) at Lista
May 1, 2022 - July 1, 2022
Led mobile UI development in React Native, building interactive UI components from Figma designs and simulating full application flows using dummy data to validate UX behavior.
Senior Full-Stack Developer at GIG
December 1, 2024 - November 1, 2025
• Built a role-based admin dashboard in Next.js to manage users, rewards, quests, and image uploads to AWS S3, adding audit trails, secure authentication with NextAuth, and data tables with TanStack React Table. • End-to-end feature ownership of integrating multiple external systems, including validation, reconciliation, and handling delayed or inconsistent events. • Developed tRPC endpoints and TanStack Query data flows, supported PostgreSQL migrations with Drizzle, and contributed to Jest unit and Cypress end-to-end testing. • Improved system reliability and performance through query optimization, efficient data fetching strategies, and robust error handling. • Delivered React Native (Expo) screens from Figma and created reusable components for customer-facing SaaS application.

Education

BS Information and Communications Technology at University of San Carlos
March 12, 2012 - April 21, 2016

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Computers & Electronics, Professional Services
    iam.devlin.ph

    Created a personal site for publishing articles and code snippets based on topics encountered in day-to-day engineering work.

    Tools: Astro, React, MDX, TailwindCSS

    dn.debu.games

    Built a hobby web app for tracking in-game activities and data, with browser-local data storage powered by Drizzle and PGlite.

    Tools: Svelte, shadcn-svelte, Vite, Drizzle, PGlit

    issues-tracker.devlin.ph

    An open-source project where users can pin issues from multiple Github repositories in one place. Useful for users who are handling multiple repositories. Data synced to cloud via Google Drive API.

    Tools: TypeScript, Tanstack Start, shadcn/ui, Octokit, Zustand

    common-utils-pkg.js.org

    Maintainer of an open-source NPM package of reusable JavaScript utilities written in TypeScript, with documentation published through Docusaurus and automated release publishing via GitHub Actions.

    Tools: TypeScript, Docusaurus, GitHub Actions

Hire a Front-End Developer

We have the best front-end developer experts on Twine. Hire a front-end developer today.