Joshua Estremos

Front-End Engineer

3+ years building scalable SaaS, e-commerce, and enterprise web applications

Joshua Estremos - Front-End Engineer

About Me

I am a Front-End Engineer with 3+ years of experience building scalable SaaS, e-commerce, and enterprise web applications for international clients.

I specialize in React, Next.js, and TypeScript with a strong focus on reusable design systems, component-driven development, and polished UI/UX implementation.

I enjoy owning front-end features end-to-end, collaborating cross-functionally, and mentoring developers to deliver high-quality, production-ready user experiences aligned with business goals.

Technologies & Skills

React.js
Next.js
TypeScript
JavaScript
Tailwind CSS
Material UI
Chakra UI
ShadCN
Redux Toolkit
Zustand
React Query
Node.js
Express.js
Supabase
Firebase
GraphQL
Apollo
PostgreSQL
MongoDB
MySQL

Project Experience

Selected projects: Blueprint, Hardware E-commmerce System, Financeable, Mugna, School Accounting System, and Specialty Coffee Depot.

Project Blueprint
Featured

Project Blueprint

Reusable Next.js starter covering onboarding, authenticated flows, and a CLI-installable chat plugin used as a base for upcoming projects.

Next.jsZustandShadCNNode CLI
Hardware E-Commerce System
Featured

Hardware E-Commerce System

Saleor-powered storefront for a nationwide hardware retailer supporting 100+ branches, with GraphQL catalog, CMS pages, and a Leaflet branch locator.

React.jsTypeScriptNext.jsREST APIs
Financeable
Featured

Financeable

Shipped 2 production surfaces for Australian brokers: a React + Redux Toolkit lender workflow app and a Next.js marketing site, plus Express data-migration endpoints.

React.jsReact RTKExpress.jsMongooseNext.jsMaterial UI
Mugna Website V2

Mugna Website V2

Rebuilt the company site in Next.js with Contentful CMS so marketing can update services and products without engineering, plus scroll-triggered animations.

Next.jsContentfulIntersection Observer
School Accounting System

School Accounting System

Multi-branch accounting platform covering 3+ modules (Chart of Accounts, Fee Codes, AP/AR), with TanStack Query, Chart.js reporting, and intern supervision.

Next.jsTypeScriptTanStack QueryREST APIs
Specialty Coffee Depot

Specialty Coffee Depot

Led front-end delivery of a specialty coffee storefront covering 3 core flows (checkout, authentication, purchase) on Next.js, Saleor, and Chakra UI.

Next.jsSaleorChakra UITypeScript

Experience

Professional experience focused on building production-grade front-end systems and mentoring teams to deliver high-quality user experiences.

💼

Software Engineer

Mugna Technologies • Davao, Philippines

May 2023 - Sept 2026

Shipped 8 production applications across 12 client engagements in SaaS, e-commerce, and enterprise.

Key Achievements:

  • •Architected and delivered 8 production apps across 12 client engagements using React, Next.js, and TypeScript
  • •Designed modular front-end architectures and reusable component systems for medium- to large-scale applications
  • •Mentored 2 junior developers through code reviews, pair programming, and architecture guidance
  • •Implemented Storybook across internal projects to standardize UI documentation and reduce design drift
  • •Created rules for AI-assisted development agents (Cursor, Copilot) to standardize team coding workflows
  • •Owned full feature lifecycle: planning, implementation, testing, docs, deployment, and post-release support

Technologies:

ReactNext.jsTypeScriptStorybookNode.jsGraphQL

Get In Touch

Open to front-end engineering roles, product collaborations, and opportunities to build high-impact web experiences.

Quick Contact

For hiring opportunities, project discussions, or consulting work, reach out directly.

Let's connect

I build scalable front-end systems and production-ready user experiences for SaaS, e-commerce, and enterprise products. If you have an opening or project in mind, let's talk.

Location

Davao City, Philippines

Email

estremosjoshua@gmail.com

Phone

+63 945 204 1874

Connect with me