Haroon Ur — Backend Development freelancer in Karachi

⭐️ Expert Vetted - Top 1% of talent on Upwork 🕒 5,000+ hours on Upwork ✅ 15+ years of experience ✅ 70+ projects delivered ✅ Excelling in delivering Fortune 500-scale projects ✅ Currently available for new projects I’m a Full Stack Developer with over 16 years of experience helping startups, enterprises, and digital agencies build secure, scalable, and high-performance web applications that generate real business results. I specialize in turning complex ideas into successful digital products — from custom SaaS platforms and CRMs to robust eCommerce systems and API-driven applications. Top Rated Plus Freelancer on Upwork 100% Job Success Score Clients rate me 5 stars for technical excellence, clear communication, and reliable delivery. Core Expertise ============== Back-End Development ----------------------------- * PHP 8+, Laravel, Symfony (Advanced Framework Architecture) * RESTful APIs, Webhooks, and Custom API Integrations * Secure Authentication Systems (JWT, OAuth2) * Scalable SaaS, CRM, and ERP Application Development * Payment Gateways: Stripe, PayPal, WooCommerce Payments, Custom APIs * Shipping & Logistics APIs: GoShippo, EasyPost, Custom Courier Integrations Front-End Development ---------------------------- * Vue.js 2 & 3, JavaScript (ES6+), jQuery * TailwindCSS, Bootstrap, HTML5, CSS3 * Modern, Responsive UI\u002FUX for Dashboards and SaaS Interfaces CMS & E-Commerce ----------------------- * WordPress (Custom Themes, Plugin Development & API Integrations) * WooCommerce (Advanced Extensions, Multi-Vendor, Subscriptions, Custom Pricing) * API-Connected Platforms Integrating Laravel and WordPress DevOps & Databases ------------------------- * MySQL, Doctrine ORM (DQL) * Git, Composer, Webpack, Docker * CI\u002FCD Pipelines for Seamless Deployment and Maintenance APIs ------ Authentication APIs (Google, Facebook, Auth0) Payment APIs (Stripe, PayPal) Email APIs (SendGrid, Mailgun) Automation APIs (Zapier, Make, Pipedream) Storage APIs (AWS S3, Cloudinary) SMS \u002FWhatsapp APIs (Twillo API) Programming Languages ------------------------------ * PHP, JavaScript, Python (Certified) AI & SaaS Solutions I Deliver ------------------------------- I build modern AI-integrated web systems using APIs and third-party services to automate workflows, enhance analytics, and improve user experiences. Examples include: --------------------- * AI-Powered Dashboards & Reporting Tools * ChatGPT & NLP API Integrations * Workflow Automation via Zapier, Pipedream, Make.com * SaaS Platforms (Subscription-Based Architecture) * CRM & ERP Systems Tailored to Business Logic Working With Me Means ---------------------------- * Excellence in Code – Clean, scalable, and future-proof architecture * Clear Communication – Always transparent, with regular progress updates * Business-Focused Development – Technical work aligned with your business goals * Security & Performance – Built to scale safely and perform under load * Timely Delivery – Proven record of hitting deadlines * 100% Satisfaction Guarantee – Full refund if you’re not happy, no questions asked What Clients Say ------------------- "Haroon is the best developer we’ve ever worked with. His ability to understand both the technical and business sides of our product is outstanding." "Delivered our Laravel and WordPress integration flawlessly. Communication, speed, and quality — all 10\u002F10." Let’s Build Something Great -------------------------------- If you’re ready to build or scale your SaaS, eCommerce, or enterprise system, let’s connect. I’ll help you transform your concept into a secure, high-performance product built to last. Message me today and let’s turn your idea into something extraordinary.