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Hi, I’m Alberto Castillo. I’m a Senior Web Developer with 10+ years of experience delivering high-performance website migrations, conversion-focused UI systems, and automation-driven WordPress platforms. I thrive on turning complex requirements into scalable, maintainable web solutions for international clients. Outside of code, I enjoy collaborating with cross-functional teams to optimize user experiences and drive measurable business results through thoughtful design and robust automation.…Hi, I’m Alberto Castillo. I’m a Senior Web Developer with 10+ years of experience delivering high-performance website migrations, conversion-focused UI systems, and automation-driven WordPress platforms. I thrive on turning complex requirements into scalable, maintainable web solutions for international clients. Outside of code, I enjoy collaborating with cross-functional teams to optimize user experiences and drive measurable business results through thoughtful design and robust automation.

Alberto Castillo

Web Developer, Front-End Developer, Back-End Developer, +3

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Hi, I’m Alberto Castillo. I’m a Senior Web Developer with 10+ years of experience delivering high-performance website migrations, conversion-focused UI systems, and automation-driven WordPress platforms. I thrive on turning complex requirements into scalable, maintainable web solutions for international clients. Outside of code, I enjoy collaborating with cross-functional teams to optimize user experiences and drive measurable business results through thoughtful design and robust automation.…Hi, I’m Alberto Castillo. I’m a Senior Web Developer with 10+ years of experience delivering high-performance website migrations, conversion-focused UI systems, and automation-driven WordPress platforms. I thrive on turning complex requirements into scalable, maintainable web solutions for international clients. Outside of code, I enjoy collaborating with cross-functional teams to optimize user experiences and drive measurable business results through thoughtful design and robust automation.

Available to hire

Hi, I’m Alberto Castillo. I’m a Senior Web Developer with 10+ years of experience delivering high-performance website migrations, conversion-focused UI systems, and automation-driven WordPress platforms. I thrive on turning complex requirements into scalable, maintainable web solutions for international clients.

Outside of code, I enjoy collaborating with cross-functional teams to optimize user experiences and drive measurable business results through thoughtful design and robust automation.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Shopify Developer

October 1, 2023 - August 1, 2025

Led end-to-end development of Shopify Plus storefront features, from UI implementation to backend logic and integrations. Built and customized storefront components using Shopify Liquid, JavaScript, HTML, and CSS. Implemented advanced e-commerce functionality including product bundles, promotional logic, and loyalty program integrations. Integrated CRM systems, marketing tools, and third-party services with Shopify to streamline data flow and campaign automation. Designed scalable Shopify architecture to support growing product catalogs and increasing traffic. Improved site performance and user experience through frontend optimization and efficient Shopify theming. Collaborated closely with product, marketing, and design teams to deliver new features aligned with business goals. Maintained and optimized Shopify themes, apps, and integrations to ensure long-term maintainability.

Ecommerce Web Developer at CustomerX

February 1, 2019 - August 1, 2023

Developed reusable Shopify storefront components using Liquid, JavaScript, HTML/CSS. Implemented integrations with third-party APIs and webhooks for payments, analytics, and marketing automation. Configured real-time data synchronization and created conversion-optimized storefront features in collaboration with marketing teams.

Web Developer at Iceblink Solutions

December 1, 2017 - September 1, 2018

Developed frontend interfaces using JavaScript, HTML, and CSS; assisted in building and customizing Shopify themes and storefronts; supported ongoing site maintenance and performance improvements.

Senior Web Developer at Freshflow

October 1, 2023 - March 1, 2026

Led complex WordPress migration projects for international clients, including large-scale content transfers, SEO preservation strategies, and frontend performance-focused rebuilds. Designed and developed premium websites using Bricks Builder and custom responsive UI systems optimized for lead generation and user engagement.

Web Developer at CustomerX

February 1, 2019 - August 1, 2023

Built scalable WordPress platforms and custom CMS solutions focused on conversion optimization and automation workflows. Integrated with Zoho CRM, Zoho One, SalesIQ, and PageSense; developed custom calculators, dynamic widgets, and lead funnels to drive engagement and conversions.

Web Developer at Iceblink Solution

December 1, 2017 - September 1, 2018

Developed responsive WordPress websites and custom CMS solutions focused on conversion optimization, user experience, and mobile accessibility. Customized frontend interfaces and dynamic page elements using JavaScript, HTML5, CSS3, and PHP while maintaining strong browser compatibility.