Rizwan Shabbir

Software Engineer

Fiverr • Temps plein

Dec 2019 - Present • 6 yrs 5 mos

Senior WordPress & PHP Developer December 2019 – Present (6 years 4 months) Led end-to-end WordPress and PHP development for clients across the UK, Germany, and Spain, delivering custom themes, plugins, and full-scale web platforms in eCommerce, healthcare, real estate, and education sectors. Key Responsibilities: Designed and developed 20+ custom WordPress themes and plugins, including WooCommerce stores, LMS platforms, and multilingual real estate portals. Built custom Gutenberg blocks using React and the WordPress Block API to streamline editorial workflows. Engineered custom post types, taxonomies, and ACF-powered solutions without relying on third-party page builders. Integrated WordPress REST API and WP-CLI scripts for content migrations, bulk operations, and headless front-end data feeds. Implemented OWASP-compliant security practices, including input sanitization, nonce verification, and hardened server configurations. Led a development team across concurrent projects, managing Git workflows, code reviews, and Agile sprint deliveries. Key Achievements 6+ years of professional development experience, with 4+ years specialized in WordPress and PHP. Delivered 20+ custom WordPress themes and plugins for international clients across Europe and beyond. Improved Google PageSpeed score from 52 to 88 for PLD Literacy through caching, image optimization, and CSS refactoring. Achieved 95+ Lighthouse performance scores on Next.js + headless WordPress projects, including Best Health Clinic. Reduced average page load times by 40% through server-side caching, query optimization, and asset minification. Cut manual workflow overhead by ~30% by integrating third-party APIs such as Stripe, Mailchimp, Google Maps, and CRM platforms. Maintained 100% on-time delivery across all freelance engagements with strong client retention. Successfully led development teams through Agile workflows, code reviews, and staging deployments for concurrent international projects.