Mateo Lee

About

Senior E-Commerce & Full-Stack Developer with 7+ years of experience building and optimizing Shopify and WordPress websites. Skilled across frontend and backend development (HTML, CSS, JavaScript, PHP, Liquid, React, Node.js), including custom themes, apps, and integrations. Focused on performance, SEO, analytics, and conversion rate optimization through A/B testing and marketing improvements (e.g., Klaviyo, Google Tag Manager/Analytics), with a track record of increasing conversions, improving user experience, and delivering scalable solutions aligned to business goals.

Experience

• Senior Shopify Developer · First Pier06-01-2024 – 12-01-2025

  •I developed a third-party Shopify app that uses JavaScript to search for jewelry products and integrated it seamlessly into our store. •Using Google Tag Manager and Google Analytics, I analyzed user behavior and implemented data-driven improvements, resulting in a 0.42% increase in conversion rate. •I also built custom pages for multiple stores and used the Klaviyo app to create seasonal email marketing campaigns and pop-ups, which increased sales by an average of 14%. •Additionally, I implemented strategies to improve site speed and user experience by optimizing code and enhancing SEO performance. These improvements led to a 12% increase in site speed and an SEO score consistently above 90%.

• Junior Shopify developer · Gianluca Rinaldi09-01-2022 – 03-01-2024

  •Initially, I created Figma designs for Shopify stores and implemented them to build custom themes. •I also served as a QA team member, reviewing code and themes developed by other developers and providing guidance on defects and workarounds. •I implemented various email marketing automations for three stores during Black Friday, increasing sales by up to 287%. •I managed a beauty brand’s WordPress site, integrating various plugins and updating multiple pages and sections, including the blog and About page.

• Primary Developer · KikstartEcom04-01-2020 – 07-01-2022

  •I took on a simple store, built sections, modified fonts, fixed tags, and updated content to improve SEO. •I developed a simple WordPress design and updated the existing site based on it, integrating plugins and setting them up. •I gained new experience by building and customizing a responsive theme, and improved my skills by reviewing code through integration with GitHub.

Education

• University of MilanBachelor of Computer Science, Computer Science

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