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Hi, I’m Zain Ul Abdeen, a senior full-stack web and eCommerce developer with over 6 years of experience building, optimizing, and scaling online storefronts and web applications. I specialize in Shopify (Liquid), WordPress, React.js, and PHP/MySQL, helping clients across the UK, US, and Pakistan improve speed, Core Web Vitals, and conversions. I excel at leading cross-functional remote teams, migrating legacy platforms to modern stacks, and delivering pixel-perfect, accessible UX under tight deadlines. I enjoy mentoring junior developers, enforcing clean Git workflows and Agile practices, and turning complex requirements into reliable, scalable solutions.…Hi, I’m Zain Ul Abdeen, a senior full-stack web and eCommerce developer with over 6 years of experience building, optimizing, and scaling online storefronts and web applications. I specialize in Shopify (Liquid), WordPress, React.js, and PHP/MySQL, helping clients across the UK, US, and Pakistan improve speed, Core Web Vitals, and conversions. I excel at leading cross-functional remote teams, migrating legacy platforms to modern stacks, and delivering pixel-perfect, accessible UX under tight deadlines. I enjoy mentoring junior developers, enforcing clean Git workflows and Agile practices, and turning complex requirements into reliable, scalable solutions.

ZAIN UL ABDEEN

Full Stack Developer, Web Developer, eCommerce Developer, +2

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Hi, I’m Zain Ul Abdeen, a senior full-stack web and eCommerce developer with over 6 years of experience building, optimizing, and scaling online storefronts and web applications. I specialize in Shopify (Liquid), WordPress, React.js, and PHP/MySQL, helping clients across the UK, US, and Pakistan improve speed, Core Web Vitals, and conversions. I excel at leading cross-functional remote teams, migrating legacy platforms to modern stacks, and delivering pixel-perfect, accessible UX under tight deadlines. I enjoy mentoring junior developers, enforcing clean Git workflows and Agile practices, and turning complex requirements into reliable, scalable solutions.…Hi, I’m Zain Ul Abdeen, a senior full-stack web and eCommerce developer with over 6 years of experience building, optimizing, and scaling online storefronts and web applications. I specialize in Shopify (Liquid), WordPress, React.js, and PHP/MySQL, helping clients across the UK, US, and Pakistan improve speed, Core Web Vitals, and conversions. I excel at leading cross-functional remote teams, migrating legacy platforms to modern stacks, and delivering pixel-perfect, accessible UX under tight deadlines. I enjoy mentoring junior developers, enforcing clean Git workflows and Agile practices, and turning complex requirements into reliable, scalable solutions.

Available to hire

Hi, I’m Zain Ul Abdeen, a senior full-stack web and eCommerce developer with over 6 years of experience building, optimizing, and scaling online storefronts and web applications. I specialize in Shopify (Liquid), WordPress, React.js, and PHP/MySQL, helping clients across the UK, US, and Pakistan improve speed, Core Web Vitals, and conversions.

I excel at leading cross-functional remote teams, migrating legacy platforms to modern stacks, and delivering pixel-perfect, accessible UX under tight deadlines. I enjoy mentoring junior developers, enforcing clean Git workflows and Agile practices, and turning complex requirements into reliable, scalable solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Full-Stack Website Developer at Freelance – Remote (International Clients)

April 1, 2023 - Present

Architected and delivered custom Shopify & WordPress solutions from discovery to launch, achieving measurable uplift in conversion rates and user engagement. Improved Core Web Vitals (LCP, CLS, FID) for multiple Shopify storefronts, cutting average page-load times by up to 40%. Integrated payment gateways (Stripe, PayPal, Klarna), shipping APIs, CRM tools, and marketing platforms via Shopify/REST APIs. Migrated eCommerce stores from Magento, WooCommerce, and BigCommerce to Shopify Plus with zero data loss. Implemented WCAG 2.1 accessibility standards and GDPR/PCI-DSS compliance across all client projects. Mentored a team of junior developers, enforcing Git workflows, code-review culture, and Agile sprint ceremonies. Managed 8-10 concurrent projects using Jira, consistently meeting deadlines and exceeding KPIs.

WordPress & Shopify Engineer at 7thClub Marketing Agency – Remote

January 1, 2020 - March 31, 2023

Delivered full-cycle website projects — from wireframe sign-off to production deployment — for a portfolio of B2B and B2C clients. Led functional, UI/UX, and cross-browser QA testing, reducing post-launch defects by 60%. Integrated third-party APIs, custom plugins, and automation tools to extend platform functionality. Set up Google Analytics 4, Google Tag Manager, and Hotjar to enable data-driven CRO decisions. Optimised site performance through caching (WP Rocket, Redis), image compression (WebP), and clean-code refactors. Maintained security standards: SSL, firewalls, malware remediation, and regular off-site backups. Collaborated with designers and marketing teams to produce high-converting landing pages and campaign microsites.

Website Designer (Intern ® Mid-Level) at Hukumat Networks – On-Site

January 1, 2018 - December 31, 2020

Designed and developed responsive websites from scratch using HTML5, CSS3, JavaScript, and WordPress. Customised themes and built CMS workflows that enabled non-technical clients to manage their own content. Led the studio's transition to mobile-first responsive design, increasing mobile usability scores company-wide. Integrated payment gateways for wholesale eCommerce clients, enabling secure online transactions. Conducted SEO audits and CRO improvements, boosting organic traffic and on-site engagement metrics.