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Hi, I’m Rob Martins, a Senior Front-End Engineer with 8+ years of experience building scalable, high-performance web applications and Shopify e-commerce experiences for enterprise and consumer-facing products. I specialize in Shopify, Liquid, Shopify Themes, React, Next.js, TypeScript, storefront performance, CRO, accessibility (WCAG), SSR, and component-based architecture. I excel at collaborating with product, design, engineering, growth, and marketing teams to deliver responsive, conversion-focused digital experiences with measurable business impact. Based in São Paulo, Brazil, I enjoy tackling frontend challenges, improving performance, and delivering scalable, maintainable code across multi-brand Shopify and ecommerce platforms.…Hi, I’m Rob Martins, a Senior Front-End Engineer with 8+ years of experience building scalable, high-performance web applications and Shopify e-commerce experiences for enterprise and consumer-facing products. I specialize in Shopify, Liquid, Shopify Themes, React, Next.js, TypeScript, storefront performance, CRO, accessibility (WCAG), SSR, and component-based architecture. I excel at collaborating with product, design, engineering, growth, and marketing teams to deliver responsive, conversion-focused digital experiences with measurable business impact. Based in São Paulo, Brazil, I enjoy tackling frontend challenges, improving performance, and delivering scalable, maintainable code across multi-brand Shopify and ecommerce platforms.

Rob Martins

Front-End Developer, Web Developer, Full Stack Developer, +2

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Hi, I’m Rob Martins, a Senior Front-End Engineer with 8+ years of experience building scalable, high-performance web applications and Shopify e-commerce experiences for enterprise and consumer-facing products. I specialize in Shopify, Liquid, Shopify Themes, React, Next.js, TypeScript, storefront performance, CRO, accessibility (WCAG), SSR, and component-based architecture. I excel at collaborating with product, design, engineering, growth, and marketing teams to deliver responsive, conversion-focused digital experiences with measurable business impact. Based in São Paulo, Brazil, I enjoy tackling frontend challenges, improving performance, and delivering scalable, maintainable code across multi-brand Shopify and ecommerce platforms.…Hi, I’m Rob Martins, a Senior Front-End Engineer with 8+ years of experience building scalable, high-performance web applications and Shopify e-commerce experiences for enterprise and consumer-facing products. I specialize in Shopify, Liquid, Shopify Themes, React, Next.js, TypeScript, storefront performance, CRO, accessibility (WCAG), SSR, and component-based architecture. I excel at collaborating with product, design, engineering, growth, and marketing teams to deliver responsive, conversion-focused digital experiences with measurable business impact. Based in São Paulo, Brazil, I enjoy tackling frontend challenges, improving performance, and delivering scalable, maintainable code across multi-brand Shopify and ecommerce platforms.

Available to hire

Hi, I’m Rob Martins, a Senior Front-End Engineer with 8+ years of experience building scalable, high-performance web applications and Shopify e-commerce experiences for enterprise and consumer-facing products. I specialize in Shopify, Liquid, Shopify Themes, React, Next.js, TypeScript, storefront performance, CRO, accessibility (WCAG), SSR, and component-based architecture.

I excel at collaborating with product, design, engineering, growth, and marketing teams to deliver responsive, conversion-focused digital experiences with measurable business impact. Based in São Paulo, Brazil, I enjoy tackling frontend challenges, improving performance, and delivering scalable, maintainable code across multi-brand Shopify and ecommerce platforms.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Portuguese

Fluent

English

Fluent

Work Experience

Senior Front-End Engineer at Firehouse Subs U.S. & Canada

November 1, 2023 - Present

Led and contributed to large-scale React-based ordering experiences used by thousands of customers across the United States, focusing on performance optimization, accessibility, scalability, and conversion improvements.

Shopify Engineer at First Day

February 1, 2025 - November 1, 2025

Built and maintained Shopify front-end experiences, including store fronts, PDPs, landing pages, and reusable theme sections; implemented A/B test variations for PDPs, CTAs, and offer messaging; integrated Shopify apps and third-party services to support marketing, analytics, and storefront functionality.

Senior Software Engineer at RBI

October 1, 2022 - November 1, 2023

Contributed to a cross-brand React web platform supporting Burger King, Popeyes, and Tim Hortons, enabling guests to place orders and manage loyalty experiences across multiple brands; focused on performance, accessibility, and scalable frontend architecture.

Front-End Engineer at PM Web

August 1, 2020 - October 1, 2022

Supported Context, a Customer Data Platform (CDP), with feature development, platform modernization, and frontend scalability; collaborated with Product, Design, and Back-End teams to deliver enterprise-level capabilities.

Front-End Engineer at N49

May 1, 2019 - August 1, 2020

Worked on scalable Shopify and white-label ecommerce experiences, supporting multiple storefronts and business models; built modular UI components and improved storefront performance via SSR, caching, and frontend optimization.

Front-End Engineer at REWEB

November 1, 2017 - May 1, 2019

Developed internal platforms and visual builders for automotive dealerships; created drag-and-drop landing page builder and reusable frontend components; collaborated with designers and product teams to improve usability and consistency.