Portfolio

Hi, I'm Roland Cadavos

Senior Full Stack Developer

React
Next.js
TypeScript
Tailwind CSS
PostgreSQL

10+ years shipping production web apps: SaaS dashboards, multi-tenant products, and APIs—front to back—with a focus on maintainable code, UX, and delivery.

View live projects Work Experience Contact Download Résumé About & Skills

At a glance

How I work

Ownership across the stack, clear collaboration, and maintainable systems—so products stay shippable as they grow.

End-to-end delivery
Shipping features from polished UI through APIs and data layers—ownership through production, not just the happy path.
Collaboration & mentoring
Clear communication, thoughtful code review, and helping teams level up on TypeScript, React patterns, and delivery habits.
Quality that scales
Readable architecture, performance-aware frontends, and pragmatic testing so products stay maintainable as they grow.

Personal projects Live sites I ship end-to-end—are on Projects.

Open projects

Work Experience

Senior Full Stack Developer

PiCode Solutions (US client, Montessori schools)

09/2023 – 02/2026

(2 yrs, 6 mos)

Philippines (Remote)

Building a multi-tenant SaaS application using React/Next.js and .NET Core, leveraging TypeScript and TanStack React Query for efficient data fetching and state management. Implementing pixel-perfect UI components from Figma designs with Tailwind CSS, ensuring consistent design systems and optimal user experiences.
Integrating Fortis for payment processing and QuickBooks (Intuit) for accounting—syncing transactions, customers, and financial data with product workflows.
Leading frontend development initiatives, conducting code reviews, and mentoring team members on best practices and modern JavaScript/TypeScript patterns.

Next.js

TypeScript

Tanstack Query

Tailwind CSS

React

Fortis

QuickBooks

MEAN/React Developer

CoDev (US client)

04/2023 – 09/2023

(6 mos)

Philippines (Remote)

Developed full-stack applications using the MEAN stack (MongoDB, Express.js, Angular, Node.js) and React for dynamic user interfaces.
Built responsive web applications with TypeScript, ensuring type safety and improved code maintainability.
Created modern UI components using Bootstrap and custom CSS, delivering consistent and accessible user experiences.

MongoDB

Express

Angular

Node.js

React

TypeScript

Bootstrap

Senior Backend Developer

OUTCERT — The Certification Hub

09/2020 – 02/2023

(2 yrs, 6 mos)

Israel (Remote)

Developed and maintained full-stack features for a WordPress application, customizing themes, plugins, and integrations. Architected and developed scalable backend systems using NestJS, TypeORM, and Express.js with GraphQL (Apollo) for efficient API design and data fetching.
Built React frontend applications with Tanstack React Query and TypeScript, integrated with Auth0 for secure authentication and authorization.
Managed MongoDB databases and maintained WordPress sites, ensuring optimal performance, security, and seamless transitions to modern web applications.

NestJS

Express

GraphQL

React

Tanstack Query

TypeScript

MongoDB

WordPress

Full Stack Developer

CoCreators Group

01/2020 – 08/2020

(8 mos)

United States (Remote)

Developed automated cron jobs to fetch and synchronize data from tadpoles.com, ensuring reliable data integration and real-time updates.
Built and customized SuiteCRM system for online enrollment web applications, streamlining student registration and management processes.
Built admin dashboard for managing student's profile, leads, enrollment, attendance, and other related data.

PHP

JavaScript

SuiteCRM

CodeIgniter

PostgreSQL

Full Stack Developer

Simple Salt — DIY Traffic Guy

02/2019 – 12/2019

(11 mos)

United States (Remote)

Developed a comprehensive referral and viral marketing application replicating Upviral.com functionalities, enabling businesses to create and manage referral campaigns.
Built full-stack solutions using PHP, JavaScript, and modern databases, delivering scalable and performant web applications.
Built a comprehensive admin dashboard to manage users, campaigns, referrals, rewards, analytics, fraud detection, and system configurations, enabling efficient platform operations and data-driven decision-making.

PHP

JavaScript

PostgreSQL

CodeIgniter

Wordpress Developer

Real Estate IQ

09/2018 – 02/2019

(6 mos)

United States (Remote)

Develop and maintain custom WordPress themes and plugins, ensuring responsive design, performance optimization, and clean, reusable code.
Customize and extend WordPress functionality by integrating APIs, third-party services, and implementing business-specific features.
Manage website performance, security, and updates, including troubleshooting issues, optimizing database queries, and ensuring SEO best practices are followed.

PHP

JavaScript

WordPress Theme/Plugin Development

jQuery

Advanced Custom Fields

MySQL

Backend Developer

Codal

08/2017 – 08/2018

(1 yr, 1 mo)

United States (Remote)

Developed backend solutions for medical applications, ensuring compliance with healthcare industry standards and data security requirements.
Built robust APIs and database systems using PHP, JavaScript, and various database technologies to support critical healthcare workflows.
Update legacy react.js components that calls the REST API to display the data in the UI.

PHP

JavaScript

react.js

Software Engineer II

Concentrix

12/2015 – 08/2021

(5 yrs, 9 mos)

Philippines (On-Site)

Designed and developed software applications for clients using Express.js, JavaScript, PHP, Laravel, and various database technologies (PostgreSQL, MySQL, MSSQL).
Built full-stack solutions using the MEAN stack (MongoDB, Express.js, Angular, Node.js) and PHP frameworks (Laravel, Symfony, CodeIgniter).
Customized and integrated CRM systems (SugarCRM, SuiteCRM) and shipped rich client work with Ext JS, Backbone.js, and Underscore.js, streamlining business operations and improving customer relationship management.

PHP

Angular