Mark Dylan Cosca
Full-Stack DeveloperDigital Commerce Expert
Full-stack developer specializing in frontend, with 9+ years building fast, fully custom e-commerce storefronts and the APIs that power them, leveraging AI-driven development from system design and well-documented codebases to automated testing and site features.
Open to work · Globally
Highlights
Behind the storefronts
Experience
The road so far
Form Factory | Software Engineer (Full-time)
Sept 2022 – Sept 2026
- Develop and maintain fully custom storefronts using Shopify Liquid, ReactJS, Remix, Hydrogen and Custom Shopify Apps.
- Build AI-powered storefront features; use Claude Code and GitHub Copilot for code review, debugging, tests and docs.
MindArc | Frontend Developer (Full-time)
Oct 2021 – May 2022
- Developed fully custom, fast e-commerce storefronts using NodeJS (Vue/React), Shopify Liquid and Custom Apps.
Digital Studio / LiveCrossing | Software Engineer (Full-time)
Mar 2019 – Oct 2021
- Led development of a custom storefront on a custom e-commerce platform using PHP/Laravel and VueJS.
Skubbs Inc | Web/Mobile Developer (Full-time)
Jul 2018 – Mar 2019
- Developed websites and hybrid mobile applications using PHP/WordPress, VueJS, Ionic and Quasar.
Fullmoon Outdoor | Developer (Full-time)
Jul 2017 – Jul 2018
- Developed websites and customized themes with PHP/WordPress; provided Search Engine Optimization (SEO).
Informatics College Northgate | Bachelor of Science in Information Technology
Jun 2014 – May 2017
Certifications | Verify on Credly ↗︎
- Shopify Apps Development
- Liquid Storefront
- Headless at Shopify for Developers
Projects
Storefronts I've built and contributed to.
Qualifications
What I bring to the table
Custom Shopify storefronts
Fully custom builds with Liquid, Hydrogen and Remix, plus custom Shopify apps, made for the brand rather than adapted from a template.
Performance-first frontend
Maintainable React and TypeScript code that keeps high-traffic storefronts fast.
Complex catalogs & B2B
Turning complex product listings and business requirements into clear, easy-to-shop UX.
AI-assisted development
Claude Code and GitHub Copilot for code review, debugging, tests and docs, plus AI-powered storefront features.
Testing & CI/CD
Pipelines, test coverage and documentation that keep large codebases reliable and easy to onboard into.
Full-stack range
APIs and integrations behind the storefront, with a background in NodeJS, PHP/Laravel, Vue and WordPress.
Skills
What I used
Frontend
- HTML5
- CSS
- JavaScript
- TypeScript
- React
- Remix
- Next.js
- Vue.js
- Shopify & Liquid
- Tailwind CSS
- CMCSS Modules
- SCSS
- Ionic
- Quasar
Backend
- Node.js
- NestJS
- Express
- PHP
- Laravel
- WordPress
- PostgreSQL
- Supabase
APIs & CMS
- REST APIs
- GraphQL
- Stripe
- Algolia
- KKlaviyo
- YYotpo
- Builder.io
- Sanity
- Pack CMS
- Shogun
Analytics
- GA4
- GTM
- Server-side tracking
- A/BA/B testing
- GDPR/CCPA
- SEO
Code Testing
- Vitest
- Jest
- PWPlaywright
- Testing Library
- Storybook
AI
- MCP
- AI Skills
- AI Workflows
- Claude Code
- GitHub Copilot
Build & Tooling
- CI/CD
- Vite
- Webpack
- Rollup
- ESLint
- Prettier
- Sentry
Project Management
- Git
- GitHub
- GitLab
- Jira
- ClickUp
- Scoro
- Notion
Contact
Let's work together
Looking for a full-stack developer? I own the full experience end to end: fast, intuitive frontends, seamless API integrations and robust backends built to scale. My specialty is e-commerce and Shopify, from custom themes and apps to headless storefronts. The best way to reach me is by email.
