Faustino Peres

I'm a Shopify developer with 9 years of experience building high-performance e-commerce solutions, custom Shopify apps, and scalable storefront architectures. My work spans the full Shopify ecosystem—from theme development and UI engineering to advanced API integrations, data modeling, automation, and Shopify Remix app development. Over the years, I've helped brands streamline operations, improve conversion rates, and extend Shopify far beyond its default capabilities through custom logic, unique customer experiences, and tailor-made backend systems.

I'm passionate about turning complex business requirements into clean, scalable technical solutions. Whether it's building a modular product options engine, a custom resource portal, a customer dashboard, or an end-to-end Shopify app, I focus on clarity, performance, and long-term maintainability.

Shopify Solutions Architect (Shopify expert) at Grepix Infotech Pvt (2022-09 – 2026-03)

• Enterprise-level architecture, strategy, and leadership
• Full Shopify ecosystem mastery (themes, apps, APIs, headless)
• Designing scalable, distributed Shopify app architectures
• Multi-store/multi-region setups
• Checkout extensibility & advanced subscription/checkout flows
• POS + Storefront unified architecture
• Performance auditing (API load, infra scaling, DB optimization)
• Security, OAuth flows, compliance, and data protection
• Strategic system planning (SSO, ERP, PIM, custom services)
• Leading dev teams & defining coding standards
• Technical roadmapping & solution design diagrams
• Stakeholder communication & requirement translation
• Developer productivity tools and CI/CD pipelines
• Building reusable internal frameworks & shared libraries

Senior shopify Developer at Eletéria Ltda (2020-04 – 2022-07)

Custom apps, automation, and advanced integrations.

• Shopify Remix App framework
• Admin API (GraphQL mastery)
• Storefront API for headless/dynamic features
• Building full custom apps (Node.js/Express, serverless, or Remix)
• Prisma ORM + SQL databases (PostgreSQL, MySQL, Neon)
• Authentication (OAuth for Shopify apps)
• Webhooks & background jobs
• Dynamic pricing engines & complex business logic
• Backend integrations (ERP, CRM, fulfillment, subscription systems)
• Custom portal development (customer dashboards, admin tools)
• Data modeling, pagination, performance optimization
• Advanced debugging & logging (Sentry, custom logs, tracing)
• Code architecture, reusable components, modular design
• Mentoring junior/mid developers

Mid-Level Shopify Developer at Alex Web (2019-10 – 2020-02)

Themes + emerging backend & API skills.

• Advanced Liquid logic (filters, loops, conditionals, dynamic blocks)
• Custom sections & app blocks
• JS modules, fetch(), dynamic storefront interactions
• Shopify App Bridge (for embedded apps)
• Shopify CLI for theme & app workflows
• Deep metafields/metaobjects architecture
• Integration with third-party APIs and apps
• Storefront performance optimization (Lighthouse, Core Web Vitals)
• Accessibility (WCAG) best practices
• Basic custom backend/API knowledge (Node.js, Express)
• Working with Admin API (REST/GraphQL) at a beginner level
• Git branching, pull requests, and deployment pipelines

Shopify theme developer at Crafty Marketing (2017-07 – 2019-09)

Foundation in Shopify's storefront layer.

• Liquid templating (sections, snippets, layouts)
• HTML5, CSS3, JavaScript (ES6 basics)
• Shopify Theme Architecture (Dawn, Online Store 2.0)
• Shopify Admin setup & theme customization
• Metafields & metaobjects configuration
• Responsive UI/UX implementation
• Theme performance optimization basics
• Version control basics (Git)
• Understanding of SEO fundamentals
• Basic debugging in browser dev tools

Bachelor's degree – University of Tolima (2012-09 – 2015-09)