I'm Louis Cathala, a full-stack engineer with over 11 years of experience, focused on web development since 2014. I specialize in JavaScript, Node.js and React (Next.js/Remix.js), and enjoy building efficient, scalable applications. I also have experience with Tailwind CSS, Sanity, and CI/CD tools like GitHub Actions and GitLab CI. I've delivered Shopify solutions ranging from simple theme updates to custom apps and extensions. I value stable, well-tested solutions and love exploring new frameworks while prioritizing performance. I thrive in collaborative environments and continuously seek opportunities to learn and grow as a developer, keeping a strong focus on maintainability, scalability, and delivering value for clients.

Louis Cathala

I'm Louis Cathala, a full-stack engineer with over 11 years of experience, focused on web development since 2014. I specialize in JavaScript, Node.js and React (Next.js/Remix.js), and enjoy building efficient, scalable applications. I also have experience with Tailwind CSS, Sanity, and CI/CD tools like GitHub Actions and GitLab CI. I've delivered Shopify solutions ranging from simple theme updates to custom apps and extensions. I value stable, well-tested solutions and love exploring new frameworks while prioritizing performance. I thrive in collaborative environments and continuously seek opportunities to learn and grow as a developer, keeping a strong focus on maintainability, scalability, and delivering value for clients.

Available to hire

I’m Louis Cathala, a full-stack engineer with over 11 years of experience, focused on web development since 2014. I specialize in JavaScript, Node.js and React (Next.js/Remix.js), and enjoy building efficient, scalable applications. I also have experience with Tailwind CSS, Sanity, and CI/CD tools like GitHub Actions and GitLab CI. I’ve delivered Shopify solutions ranging from simple theme updates to custom apps and extensions. I value stable, well-tested solutions and love exploring new frameworks while prioritizing performance.

I thrive in collaborative environments and continuously seek opportunities to learn and grow as a developer, keeping a strong focus on maintainability, scalability, and delivering value for clients.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert

Work Experience

Developer at CloZ
July 1, 2025 - November 1, 2025
Public Shopify app with Gadget to allow a merchant to plug its products in CloZ SmartCloset network. The merchant configures mappings for product details; Shopify products are pushed to CloZ API with mappings applied; Shopify billing API used for paid plans; A webhook pushes stats to the DB; Merchants view per-product stats; Outfit suggestions based on likes; Some dashboard widgets restricted by plan.
Developer at IQ Spirits
January 1, 2025 - October 1, 2025
French taxes, discounts and PDF invoices management for a spirits shop using Shopify and Spark-Layer. Custom Shopify app using Gadget, product and order sync; CRUD for SparkLayer discounts; Create hidden tax products via metafields; Update Liquid theme and Spark cart/history to integrate taxes; Generate PDF invoices on fulfilment; Automated invoices upload to Google Drive; Admin settings available in Shopify.
Developer at Cimaises &+
October 1, 2024 - December 1, 2024
Custom Shopify carrier service to filter shipping methods based on cart items and shipping country. Complex shipping rules by weight, length and destination; Gadget-enabled Shopify app to configure conditions; Register a custom carrier service at checkout; Return shipping methods that match; Free shipping if conditions are met; Onsite products available for viewing without charge.
Developer at JCP Vacances
August 1, 2024 - November 1, 2024
Custom Shopify theme based on Dawn for a travel company; UI with a strong search feature across factors; Custom pages for Home, results, products, blog, account and orders; Heavy use of classic tech: HTML, CSS, JS, Web Components.
Developer at Artenza
June 1, 2024 - October 1, 2024
Management of frame products; Frame selector on product pages with dynamic image updates and price recalculation; Selected frame added to cart with synced quantities; Query parameter support for pre-selecting a frame for easy sharing.
Full Stack Developer at Zone Critique
October 1, 2023 - August 1, 2025
Litterature platform with multiple writers migrated from old WordPress to modern WordPress + headless Gatsby progressive web app; Fast installable static PWA; WordPress data and Stripe products fetched at build; Includes shop for digital, physical products and subscriptions with Stripe Checkout; Premium articles for subscribers.
Lead Developer at Explain.care
February 1, 2023 - August 1, 2023
Shopify and Remix headless app using Sanity for a skincare shop; Complex product specs via Sanity schemas; SSR pages for performance; SEO managed by merchant via Sanity; Routine builder with quiz, product suggestions and routine quick-buy; Fully manageable by merchant: products, SEO, routines.
Lead Developer at The Bradery
January 1, 2021 - July 1, 2021
Private sales clothes Shopify store; React Native app from scratch with automated builds; Node.js microservices for back-in-stock and email campaigns; Middleware Node.js API shared for web and mobile; Docker-based CI/CD; AWS CloudFormation stack with ECS and horizontal scaling.
Full Stack Developer at Ledger
March 1, 2020 - July 1, 2022
Theme evolutions and maintenance for a well-known crypto hardware wallet powered by Shopify; Globalization for shop, blog and support apps; Node.js Lambda functions for email campaigns; Terraform stack for Node.js microservices; Shopify Liquid theme maintenance; PoC app for Nano wallets with cryptographic voting.
Full Stack Developer at YOSS
November 1, 2018 - June 1, 2019
Platform for freelancers and recruiters; Numerous QoL improvements; x2 platform initiatives including yoss.works; Infra deployed on MS Azure; E2E tests with Cypress; CI/CD with GitHub Actions.
Full Stack Developer at Oyst
February 1, 2017 - September 1, 2018
Generic one-click payment solution for multiple platforms; React app embedded as an iframe; Node.js microservices for users, merchants and payments; 4-digit SMS authentication; Adyen card payments; Lead frontend v2 refactor.

Education

Software Developer at AFPA - Angers, France
July 1, 2010 - January 7, 2026
Software Designer-Developer at IMIE - Angers, France
September 1, 2014 - January 7, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Media & Entertainment, Retail, Professional Services, Travel & Hospitality