Ivan Sosa
Available for remote roles & freelance projects

Architecting
 
Solutions for the Modern Web & Mobile

Senior Software Engineer with +7 years of experience specializing in Web Page Development and High Performance Applications.

React & Next.js
PHP & Laravel
PostgreSQL & MySQL
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Work Experience

My professional journey and the companies I've had the privilege to work with.

Senior Android Developer

Company in progress
Jan 2026 - Present

Currently developing a Android App, with launch planned soon on Google Play & App Store.

Android StudioKotlinJetpack ComposeGitGitHubClickUp

Senior FullStack Developer

YITH | Bluehost - Newfold Digital
Nov 2018 - Jan 2026

I built and maintained high-performance WooCommerce plugins at scale, partnering with product and support to ship reliable features and smooth upgrades for merchants. I focused on modernizing legacy codebases, performance, and automation to improve release confidence.

  • >AI Integration: Contributed to MCP (Model Context Protocol) AI development for internal WordPress product, enabling secure, seamless connections between AI models and WordPress sites.
  • >Modern Frontend & Gutenberg: Built custom Gutenberg blocks with React, transitioning legacy interfaces to block-based editing experiences.
  • >WooCommerce ecosystem: Developed and maintained complex WooCommerce extensions with a focus on compatibility and scalability.
  • >Backend engineering: Built backend solutions using PHP and Laravel, focusing on performance and RESTful API design for third‑party integrations.
  • >Quality assurance: Implemented automated testing pipelines with Cypress, reducing regressions and improving release stability.
  • >Legacy migration: Maintained and refactored legacy JavaScript/jQuery code while progressively adopting modern standards.
  • >Community: Contributed actively to the WordPress ecosystem through code contributions, feedback, and community discussions.
PHPLaraveljQueryReactNodeJSGitGitHubBitbucketJiraConfluence

Backend Developer

Pragonauts
Mar 2018 - May 2018

Built chatbot backends for Facebook Messenger using Node.js and Serverless, focusing on real-time interaction and event-driven architecture.

  • >Designed scalable workflows (webhooks, queues/events) to keep response times stable under variable traffic.
  • >Worked closely with stakeholders to iterate conversation flows based on real user behavior and feedback.
NodeJSServerlessGit
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Case Studies

Selected work: the problem, what I did, and the result.

Canarigas: Gas Prices

Canarigas: Gas Prices

Problem
Finding the cheapest fuel in the Canary Islands means checking station after station.
What I did
Built an Android app that shows real-time fuel prices across the islands, with nearby stations and fuel-type filters.
Result
Published and live on Google Play.
Technologies
KotlinJetpack ComposeAndroid
Contrib.dev

Contrib.dev

Problem
Finding an open source issue that fits your skills and interests is slow.
What I did
Built a platform that matches developers with issues from public GitHub repositories.
Result
Open source platform, live online.
Technologies
Next.jsGitHub APIOpen Source
Coin Market Info

Coin Market Info

Problem
Following the crypto market means jumping between sources for prices, volume and history.
What I did
Built a web platform on top of the CoinGecko API with market cap, trading volume, price changes and historical charts.
Result
Real-time prices and stats for thousands of cryptocurrencies in one place.
Technologies
ReactAPI usage
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Services for hire

How I can help your company, agency or product.

Full-stack web development

Web applications and sites built end to end, from the interface to the backend, with a focus on performance and long-term maintenance.

Backend & API development

Scalable backends and RESTful APIs in PHP/Laravel and Node.js, ready for third-party integrations.

Android app development

Native Android apps with Kotlin and Jetpack Compose, from idea to Google Play.

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Tech Stack

The tools and technologies I use to build high-quality software.

Frontend Development

React & Next.js

Expert

Strict Type Architect

JavaScript | jQuery

Advanced

+7 Years Experience

Tailwind CSS

Expert

Design Systems

Backend Architecture

PHP | Laravel

Expert

Scalable APIs

PostgreSQL | MySQL

Advanced

Complex Optimization

NodeJS

Advanced

High Concurrency

Mobile Development

Kotlin

Expert

Native Android Development

Jetpack Compose UI

Expert

Modern UI/UX

Room + Retrofit

Advanced

Data Persistence

Version Control System (VCS)

Git

Expert

Branching & Merging

GitHub

Expert

Collaboration & CI/CD

Bitbucket

Advanced

Collaboration

Content Management Systems (CMS)

WordPress

Expert

Custom Themes & Plugins

Shopify

Basic

E-commerce Storefronts

Drupal

Basic

Content Modeling

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Get in Touch

Are you looking for a senior architect or full-stack expert? I am currently open to new opportunities and consultancies.

I typically respond within 24 hours.