Senior Software Engineer with 5+ years shipping production e-commerce systems. I own Shopify stores end-to-end — from theme architecture and Liquid customization to checkout flow, omnichannel integrations, and conversion optimization.

Currently Senior Shopify Operator at Scale Army (Charlotte, NC · Remote), leading complex Shopify operations, technical SEO, and data management for high-volume B2B and B2C environments. In parallel, I'm the technical partner and sole engineer for an international luxury fashion brand through Virtustant, where I've driven a 455% increase in platform sessions, 114% in orders, and 74% in total sales.

I founded and operated Martin, a men's fashion Shopify store that scaled to 6-figure revenue, ~2,000 orders, and 297,000+ sessions — engineered and operated end-to-end as a single founder.

• 455% sessions, 114% orders, 74% total sales lift for an international luxury Shopify brand
• 6-figure revenue, ~2,000 orders, 297K+ sessions as founder and sole engineer of a Shopify store
• High-volume B2B + B2C Shopify operations across multi-level variant catalogs, Matrixify, and CSV pipelines
• Omnichannel integrations: Amazon Seller Central, Google Merchant Center, Meta CAPI/Pixel, Klaviyo
• Technical SEO and AI-search readiness — structured data, schema markup, Core Web Vitals

Shopify          Liquid · Hydrogen · Storefront API · Admin API · Shopify Functions · Theme Kit
                 Matrixify · Checkout Extensibility · Metafields · B2B · Markets
Frontend         React · Next.js · TypeScript · Tailwind CSS · Core Web Vitals
Backend          Node.js · Express · REST APIs · GraphQL · Webhooks
Databases        PostgreSQL · MySQL · Prisma · Redis · MongoDB
SEO & Analytics  Structured Data · Schema Markup · GA4 · Technical SEO · AI-Search Readiness
Integrations     Amazon Seller Central · Google Merchant Center · Meta CAPI/Pixel · Klaviyo
CRO              Checkout Optimization · Funnel Analysis · A/B Testing · Upsell/Cross-sell
Infrastructure   Vercel · Docker · GitHub Actions · CI/CD · AWS · Firebase

May 2026 – Present · Charlotte, NC · Remote · Full-time

Leading complex Shopify operations, technical SEO, and data management for high-volume B2B and B2C environments.

• Catalog & Data Management — bulk updates, pricing adjustments, and inventory synchronization across multi-level variant configurations using Matrixify and complex CSV workflows
• Technical SEO & Performance — structured data, schema markup, and site architecture for high crawlability and AI-powered search readiness
• Analytics & Strategy — GA4 to cross-reference sales performance, identify conversion trends, and translate insights into upselling, cross-selling, and merchandising strategies
• Ecosystem Stability — monitoring app integrations, resolving conflicts, building technical lead-capture forms, and optimizing navigation and checkout flow

August 2025 – Present · New York, USA · Remote · Part-time

Technical partner and sole engineer for an international luxury fashion brand. I own engineering, reliability, and scalability of their e-commerce ecosystem.

• Business Growth — drove a 455% increase in platform sessions, 114% in orders, and 74% in total sales since joining
• Frontend Engineering — designed and implemented custom frontend components and UI logic, prioritizing performance, Core Web Vitals, and UX across a large-scale product catalog
• Omnichannel Integrations — Amazon Seller Central, Google Merchant Center, and advanced Meta Ads tracking (CAPI / Pixel)
• System Automation — robust automation workflows for marketing, inventory, and post-purchase ops via Klaviyo, custom flows, and AI-assisted content pipelines
• Technical Leadership — primary technical decision-maker, balancing platform constraints, scalability, and business priorities in a fully remote, international environment

November 2022 – April 2026 · Brazil · Remote

Founded and scaled a men's fashion Shopify store from zero, owning every layer: engineering, branding, content, and operations.

• Built and maintained the entire technical stack — custom Liquid components, checkout logic, and internal tooling
• Scaled the platform to 6-figure revenue, ~2,000 orders, and 297,000+ sessions — operated end-to-end without additional resources
• Implemented marketing integrations, inventory automation, and performance reporting pipelines
• Optimized for Core Web Vitals, technical SEO, and conversion across the full funnel

September 2020 – Present · São Paulo, Brazil · Remote

E-commerce and software consultancy serving clients across 10+ countries.

• Re-architected Shopify storefronts with custom frontend logic, checkout optimization, and tiered pricing systems for international clients
• Delivered Hydrogen and Next.js commerce frontends with custom Storefront API integrations
• Managed $20,000+ in ad spend across Google Ads and Meta Ads with measurable ROI for e-commerce clients

Portfolio: nexagency.com.br

Problem A retail brand needed a high-converting Shopify store with custom checkout logic, inventory sync, and room to scale internationally.

Solution Built the full stack: Shopify storefront with custom Liquid and React/Hydrogen components, payment processing, marketing integrations, and automated inventory and reporting pipelines. Optimized for Core Web Vitals, SEO, and conversion across every funnel step.

Impact

• 6-figure total online revenue, ~2,000 orders, 297K+ sessions
• Operated end-to-end as a single founder — engineering, ops, and growth

┌──────────────────────────────────────────────────────────┐
│  → Own the store end-to-end. Theme to checkout to ops.   │
│  → Ship for revenue, not for show.                       │
│  → Write Liquid and code that survives the next campaign.│
│  → Measure everything. Optimize what matters.            │
│  → Communicate async. Work remote. Deliver on time.      │
└──────────────────────────────────────────────────────────┘

• GitHub: github.com/abrahao-dev
• LinkedIn: linkedin.com/in/abrahao-dev
• Email: contato.matheusabrahao@gmail.com