Fixed Price ($350): Magento 2 Expert | Checkout, PayU, Magefan Currency, CLS & Speed

We are looking for a highly experienced Magento 2 developer to perform a comprehensive performance optimization, technical cleanup, and critical bug-fixing project for our live fashion e-commerce store: https://www.deepinvogue.ro Our website is currently experiencing serious performance and functionality issues that negatively affect user experience, customer conversions, and sales. We need a thorough, permanent solution across the entire website—not temporary patches or superficial improvements. 1. Critical Performance & Core Web Vitals Issues Our current Google PageSpeed Insights results indicate significant problems: Mobile Performance Score: 21/100 – Unacceptably low. Largest Contentful Paint (LCP): 13.9 seconds – Extremely slow rendering of primary content. Total Blocking Time (TBT): ~740 ms – Excessive JavaScript execution and main-thread blocking. Cumulative Layout Shift (CLS): 0.628 – Severe visual instability on both desktop and mobile. During page loading, images, content blocks, and other elements visibly jump, shift, or rearrange, creating a poor shopping experience. Google diagnostics also highlight: Render-blocking resources causing delays exceeding 3.4 seconds. Excessive unused JavaScript and CSS. Poorly optimized asset loading and execution. Missing explicit image dimensions and insufficient space reservation. Opportunities to improve image delivery and rendering efficiency. Required outcome: Comprehensively optimize the homepage, category pages, product pages, cart, checkout, and other relevant pages. Significantly improve mobile and desktop performance, dramatically reduce LCP and blocking time, eliminate layout instability, and ensure smooth, consistent loading across devices. Optimizations must preserve the existing design, functionality, and visual quality of our fashion store. 2. Checkout, Payment Gateway & Module Fixes Amasty One Step Checkout Perform a clean reinstallation and proper configuration. Fix international address validation, particularly incorrect state/province/region requirements for European and other countries. Eliminate JavaScript errors, unnecessary validation restrictions, and checkout submission failures. Ensure customers can complete orders smoothly on mobile and desktop, without unexpected errors or restrictions. PayU Payment Gateway Replace the outdated payment integration with the latest official PayU module compatible with our Magento installation. Configure and thoroughly test the payment process. Ensure successful payment processing, order creation, correct order statuses, and reliable customer redirection. Magefan Currency Switcher Perform a clean installation and configuration. Ensure correct currency switching throughout the entire website. Verify proper pricing, sessions, cart behavior, and checkout functionality across supported currencies and store views. 3. Mandatory Tracking Protection – Critical Requirement Our website uses a professionally configured tracking infrastructure, including: Google Tag Manager (GTM) Google Analytics 4 (GA4) Meta Pixel and Conversions API (CAPI) Server-side tracking Magento DataLayer integration All existing tracking configurations must remain completely intact and fully functional. No optimization, module reinstallation, or checkout modification may compromise event accuracy, attribution, or data integrity. Particular attention must be given to Purchase events, correct order values, currencies, event IDs, and browser/server deduplication. All relevant e-commerce dataLayer events must continue functioning correctly after implementation. 4. Development Environment & Testing All development and testing must be performed on a staging environment before deploying changes to the live website. The developer must: Identify and address the root causes of performance and functionality problems. Follow Magento 2 best practices and implement stable, maintainable solutions. Avoid unnecessary modifications to Magento core files or third-party module code. Preserve existing design, functionality, and tracking integrations. Test the complete purchasing journey across mobile and desktop. Deploy verified changes safely, with an appropriate backup and rollback plan. 5. Project Budget & Acceptance Conditions Fixed Budget: $350 USD This is a fixed-price assignment covering the complete scope described above. Final payment will be released only after the implementation has been completed and thoroughly verified, including: Substantial, measurable improvements in PageSpeed and Core Web Vitals. Resolution of layout shifts across the website. Checkout working correctly without reproducible errors or unnecessary validation barriers. Successful PayU payment transactions and correct order processing. Fully functional currency switching and accurate pricing. All existing tracking systems operating correctly, without lost events or broken integrations. Successful testing on staging and verification after live deployment. Before and after performance results must be provided to demonstrate the improvements achieved. 6. Who We Want to Work With We are looking for a dedicated Magento 2 expert with proven experience in performance optimization, frontend debugging, checkout integrations, and complex Magento environments. Technical expertise is essential, but so are professionalism, responsibility, attention to detail, and genuine commitment to delivering excellent results. We value developers who take pride in their work, approach problems with genuine interest, and are personally invested in achieving the best possible outcome—not simply completing tasks to collect payment. We are not interested in developers who simultaneously take on more projects than they can properly manage, rush implementations, or leave work unfinished or insufficiently tested. We want someone who can take ownership of this assignment, communicate clearly, identify root causes, and deliver a genuinely stable, optimized website. Our priority is quality, reliability, and long-term stability. We are also interested in establishing a long-term professional relationship for future Magento development and improvements. However, successfully completing this initial assignment is our immediate priority. When applying, please briefly explain: Your relevant Magento 2 performance optimization experience. Your approach to resolving our specific PageSpeed, LCP, CLS, and checkout problems. Your ability to complete the full assignment within the stated fixed budget. Your estimated completion timeframe. We welcome proposals from serious, experienced professionals who are confident in their ability to deliver measurable improvements and high-quality results.