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Matthieu O.

Matthieu O.

Full-Stack developer, Hybrid Mobile apps, SAAS, Shopify App

Hey there! I'm Matt, new to Upwork, and based in Ireland. With over 20 years of experience in software development, I specialize in building scalable SaaS platforms, cutom web applications, and mobile apps (React Native). 💡 What I Bring to the Table: ✔ Mobile Development – React Native & Expo for iOS & Android apps ✔ Backend & Full-Stack Development – PHP, NodeJS, Python ✔ Front-End Expertise – JavaScript (React, Vue.js, D3.js), HTML, CSS, Tailwind CSS, Bootstrap ✔ Data Visualization & Analytics – D3.js ✔ Database Management – PostgreSQL, Supabase, MySQL ✔ Linux & Server Administration – Deploying and managing cloud-based apps ✔ Deploying – Digital Ocean, Vercel ✔ Data Scrapping & automatisation – Puppeteer, Playwright ✔ Custom Shopify Apps (RemixJS) 👨‍💻 Past Projects Include: Mobile apps: 🔹 Building a mindfulness mobile app (iOS & Android) - Mindful Moments 🔹 Building an iOS tracking exercises mobile app - RepTrack 🔹 Building a reminder mobile app with very accurate sync for notifications (iOS & android) - To Future me 🔹 Building an iOS Binaural Beats mobile app Saas & custom development: 🔹 Developing custom apps (booking systems, custom development) 🔹 Custom web app (diary) for a Hotel Restaurant to manage their bookings (events & weedings) 🔹 Affiliation Platform (SaaS) in Canada - 3 different dashboards & transaction tracking solutions 🔹 Collaborating on software solutions for care centers and enterprise clients 🔹 Shopify app to track affiliate links and data dashboard 🔹 Shopify app to build a XML custom product feed 🔹 Creating social media analytics dashboards with interactive data visualizations Websites & E-commerce: 🔹 Migrating a big fashion brand e-commerce website & POS to Shopify 🔹 Building a jewellery website with Woocommerce (wholesale & direct to consumers) 🔹 Building a gift ideas websites in Wordpress 🔹 Building a gift ideas quote system for corporate gifts in Woocommerce I'm resident in Ireland for the past 8 years. Fluent in English & French, I have worked in Canada, Ireland, and France, bringing a global perspective to development. Whether you need an MVP, SaaS platform, or a custom web or mobile solution, I’m ready to bring your ideas to life. 📩 Let’s discuss your project and turn it into reality!

🇮🇪Kilkenny, Ireland$65/hr100% JSSSince Mar 2025

Earnings and projects

MRR
$729

Last 6 months ÷ 2.7 months active (since Aug 2026)

World#61,891 / 412k
🇮🇪Country#99 / 844
Revenue, last 30 days
$0

Last 6 months: $2k

Total earnings
$2k
World#333,648 / 412k
🇮🇪Country#663 / 844
Per project
$2k

$2k in the last 6 months

World#77,072 / 412k
🇮🇪Country#130 / 844
Projects, last 6 months
1
100% fixed0% hourly
World#128,092 / 412k
🇮🇪Country#224 / 844
Projects in all
1
100% fixed0% hourly
World#360,671 / 412k
🇮🇪Country#738 / 844

Earnings, last 30 days

$2kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1,980$2,000$2,020Oct 8Oct 23Nov 7

Skill rankings: Top 8% in Script

Ranked by MRR among everyone on Upwork with the skill.

  1. #22Remix158 freelancers · 🇮🇪 #1Top 14%
  2. #54Script701 freelancers · 🇮🇪 #1Top 8%
  3. #251Hybrid App Development1,431 freelancers · 🇮🇪 #1Top 18%
  4. #474App Development2,592 freelancers · 🇮🇪 #1Top 18%
  5. #652Shopify Apps3,368 freelancers · 🇮🇪 #1Top 19%
  6. #1,044Supabase4,116 freelancers · 🇮🇪 #2Top 25%
  7. #1,106Vue.js8,267 freelancers · 🇮🇪 #2Top 13%
  8. #1,516Web Application9,341 freelancers · 🇮🇪 #3Top 16%