Hire the Best JavaScript Developers in California

🌟 Upwork Awards: Best Freelancer 2020 for Web, Mobile & Software Development 🌟 I've been creating websites and apps with complex 3D technologies for more than 7 years. Please check out my portfolio and reviews here on Upwork. 🟢 Here are 8 areas I will help you with: 1. Wow-websites and landings with 3D effects and animations for your company or product presentation. 2. 3D visualization of goods and equipment on your website. (Inc. photorealistic 3D modeling) 3. 3D Configurators (for choosing the shape, color, the material of the product and see it in 3D on your website) 4. Websites presenting real estate in 3D. (3D-visualization of buildings and territories, any development projects) 5. Projects with Augmented Reality (AR) and Virtual Reality (VR). 6. Browser 3D online games and interactive gamification projects. 7. MetaVerse, Play2Earn Unreal Engine 5 games. 8. BlockChain Development, NFT, DApps, Marketplaces. 🟢 Why me? 1. Communication comfort guaranteed. 24/7 online. And it's OK if you are far from the technical knowledge and terms. 2. I've been working in this field for 7 years and have an impressive portfolio and experience. 3. I've created a Team that allows me to combine development, design, and management skills to implement and support projects of any complexity. 4. Great management. We use Agile and SCRUM methods. 5. Be sure that all ideas and commercial info will not be exposed. We are always signing NDA. 6. More than 5 years on UpWork - EXPERT-VETTED, 4k logged hours and $200k+ 🟢 Skills Three.js (threejs) | WebGl | 8th Wall | AR | VR | Babylon.js | PlayCanvas | UnrealEngine 5 JavaScript | Typescript | React | React Hooks | Redux | React Native Next.JS | WordPress | Node.js | Nest.js Solidity | Rust | Web3.js ( WEB3 ) | NFT Minting Css Frameworks ( Material UI | Ant design | Styled Components ) Databases ( MongoDB | Firebase | PostgreSQL ) DJI SDK Google Map API Amazon Expert ( EC2, S3 ) | Digital Ocean | CI/CD ( GitLab, GitHub ) 📗 Thank you for reading to the end! Please feel free to write to me. I always respond quickly here on the Upwork. Briefly describe your problem or idea in your own words, and I will offer the best solution. We can also take a video call to discuss your project.

Full-stack JavaScript developer with 1+ year of hands-on experience building production-oriented web applications using React, TypeScript, Node.js, and SQL databases. Experienced in designing scalable REST APIs, clean backend architecture, and maintainable frontend systems.

I love to create clean & professional web development projects. I specialize in WordPress, WooCommerce, and PHP development. I am proficient in JavaScript and have expertise in React as well. My passion is working with technology and learning new things every day. It's a joy to program with PHP, JavaScript, and React, and it feels like a game to me 👨‍💻. My goal is to provide great value to those I work with, and make my work into an art. I want people who I work with to walk away feeling pleased, and knowing that doing business together was a great deal. ⭐️ 5-star Client Reviews 📜 Web Development University Graduate 🚀 Passionate about providing you with excellent results I love talking to people and communicating, and I want my clients to feel that they know everything they want to about what's going on in the project. I deliver projects on time and strive to provide service that exceeds your expectations. ⭐ What you can look forward to when working with me: ⭐ ⏱️ PROFESSIONALISM: I work to deliver products in a timely and impressive manner, always working and communicating with poise. ⛏️ HARD WORK: I want to show my clients that they can trust me to deliver what I promise, no matter what. 💠 INTEGRITY: One of my key pillars is Honesty, and also following the Golden Rule. I know that adhering to timeless principles is not only great for others, but that this is the best way to help myself achieve my dreams as well. Take a look at this example of one of my ✨Client Reviews✨, to get a feel for what you can expect from me: "Thank you Omar for your detailed work. You are truly a professional. I believe I will work with you again since you are experienced JavaScript developer. You don't need detailed job explanations, you know what to do." - Alperen Durmus, Full-Stack Developer I appreciate you taking the time to view my profile, and I look forward to working with you to make your next project stellar! 📲

✨ Senior API Integration & AI Automation Specialist | LLM & OpenAI Expert ✨ Core Expertise: API Integrations • AI Agents • LLM Applications • OpenAI API • Payment Gateways • ERP Systems • Chatbots • Microservices • Marketing Tools • Healthcare Systems • Financial Platforms • Middleware • CRM • Social Media APIs • Databases • E-commerce • Workflow Automation • HubSpot • Salesforce • QuickBooks API • NetSuite Integration • Odoo ERP Development • Zoho Books API I help businesses connect platforms, automate workflows, and build scalable AI-powered systems using APIs, LLMs, and modern backend technologies. My expertise includes API integrations, AI agents, OpenAI-powered applications, payment gateway systems, CRM/ERP synchronization, workflow automation, and custom middleware development. I focus on building reliable integrations that improve operational efficiency, reduce manual work, and scale smoothly with business growth. Core Expertise: ✔ API Integrations ✔ AI Agents & LLM Applications ✔ OpenAI API & Automation ✔ Payment Gateway Integrations ✔ QuickBooks & Xero Integrations ✔ CRM & ERP Systems ✔ Twilio, WhatsApp & Messaging APIs ✔ Webhooks & Microservices ✔ Healthcare & Financial Systems ✔ E-commerce Integrations ✔ Custom Backend Development Tech Stack: Node.js • NestJS • Python • FastAPI • Express.js • PostgreSQL • MongoDB • Redis • REST APIs • GraphQL • Docker • AWS • Firebase I’ve worked on integrations involving payment platforms, accounting systems, AI chatbots, communication APIs, SaaS products, and enterprise workflow automation systems. Why clients work with me: ✅ Clean and scalable architecture ✅ Fast communication and reliable delivery ✅ Business-focused solutions ✅ Long-term maintainable systems ✅ Strong debugging and problem-solving skills If you need an experienced developer to build secure integrations or AI-powered automation systems, feel free to invite me to your project or schedule a quick chat. Full Stack Developer | MERN Stack Developer | Base44 Developer| React.js Developer | Next.js Developer | Node.js Developer | JavaScript Developer | Web Application Development | Custom Web Applications | SaaS Development | MVP Development | Startup Developer | Scalable Web Applications | Backend Developer | Frontend Developer | API Integration | REST API Development | GraphQL API | API Developer | Third-Party Integrations | Payment Gateway Integration | Stripe | PayPal | CRM Integration | HubSpot | Zoho| Salesforce | Dashboard Development | Admin Panel Development | Automation Developer | Workflow Automation | Zapier | Make | Integromat | n8n | Database Design | MongoDB | PostgreSQL | MySQL | Firebase | Supabase | Redis | Real-Time Applications | Web Performance Optimization | Responsive Web Design | Tailwind CSS | Modern UI/UX | Cloud Deployment | AWS | Vercel | Docker | CI/CD Pipelines | GitHub Actions | Serverless Architecture | Microservices Architecture | Secure Authentication | JWT | OAuth) | Role-Based Access Control | RBAC | SaaS Platforms | Marketplace Development | Booking Systems | ERP Systems | CRM Systems | Scalable Backend Systems | Twilio API | WhatsApp API | SMS API | Messaging API | VOIP Systems | Cloud Telephony | Call Automation | Auto Dialer Systems | IVR Systems | Call Routing | WebRTC | SIP Integration | Call Recording & Analytics | CRM Calling Integration | QuickBooks Online Integration | QBO Automation | Accounting Workflow Automation | Financial Data Sync | Invoicing & Payments Sync | Expense & Transaction Automation | Bookkeeping Integrations | POS to QuickBooks Sync | Payroll & Reporting Automation | NetSuite Integration | Odoo ERP Development | Zoho Books API Integration | ERP & Accounting Software Integrations

Full Stack Developer | Elementor expert | Divi Theme | Blocks Builder | WordPress Designer | SEO 𝗜 𝗮𝗺 𝘁𝗼𝗽 𝟭% 𝗳𝗿𝗲𝗲𝗹𝗮𝗻𝗰𝗲 𝘄𝗲𝗯𝘀𝗶𝘁𝗲 𝗱𝗲𝘀𝗶𝗴𝗻𝗲𝗿/𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝗶𝗻𝗴 𝗶𝗻 𝘄𝗼𝗿𝗱𝗽𝗿𝗲𝘀𝘀, helping companies to generate millions of dollars of sales and leads from their websites. WordPress Website Designer and SEO expert. 🏆 Award-Winning WordPress Developer | Elementor Expert and Divi theme. 💼 6+ Years of Experience as a WordPress Developer and Elementor Expert. 🌟 Reliable, Honest, and Professional. 💯 100% Client Satisfaction. 🚀 Quick Learner and Problem Solver. ⏰ On-Time Delivery. 🕒 12+ Hours/Day Availability. 🤝 Long-Term Partner. 🧠 My Elementor/WordPress Skills: 💎 Figma/PSD/Xd/Ai To Elementor 💎 Transferring Websites to Elementor 💎 Create a custom landing page 💎 Custom Woocommerce/Blog Pages 💎 Responsive Website For Mobile & Tablets 💎 Advanced Custom Fields / ACF 💎 WordPress, Webflow Website Design 💎 WooCommerce, Shopify eCommerce website Design 💎 Pro in Divi Builder | Elementor | Visual Composer | WIX 💎 Web (UI) Design with UX Implementation 💎 WordPress Bug Fixing 💎 Theme Migration 💎 Hosting Migration, cPanel, Plesk Let me introduce you to the benefits of hiring me as your WordPress Developer and Elementor Expert: I'm a professional skilled WordPress Website Designer and Developer with Elementor. Also, I'm a WordPress Speed Optimization Expert. Over the past years, I created about 350 websites for my clients as a WordPress Developer and Elementor Expert. I pride myself on doing quality work and maintaining excellent communication. Most of the time, I work on WordPress with Elementor. Do you want any service on WordPress and Elementor? Just send me a message and tell me what you want. I will give you the best service as a WordPress Developer. I can design and develop any website, like: ================================= ☛ Agency Website/Business Website. ☛ Portfolio Website/Personal Website. ☛ Real Estate Website. ☛ News/Blog/Magazine Website. ☛ Art Gallery/Photographer Website. ☛ Appointment Website. ☛ eCommerce Website/Online Store. ☛ DropShipping Website. Specializes in CMS Development (WordPress): ==================================== ☛ WordPress website theme/plugin/demo install and customization. ☛ Custom WordPress website design and development with Elementor Pro. ☛ Envato template install and customization. ☛ WordPress landing page design by Elementor Pro. ☛ PSD, XD, Figma, and HTML to WordPress website using Elementor Pro. ☛ Brute force attack and attempt login block. ☛ Page speed optimization with premium plugins. ☛ WordPress website content upload and customization. ☛ Fully responsive website design by Elementor Pro. ☛ Redesign any WordPress website with Elementor Pro. ☛ Hacking protection and malware block. ☛ Blog template design for WordPress website. ☛ Membership system using premium plugins. ☛ Appointment booking functionality. ☛ Clone any WordPress website with Elementor Pro. ☛ Website security, bugs, and malware fixes. ☛ Gravity form and pop-up functionality. Specializes in Page Speed Optimization: =============================== ☛ Minify HTML, CSS, and JS files for speed optimization. ☛ Reduce initial server response time and lazy loading. ☛ Largest contentful paint. ☛ First contentful paint. ☛ Cumulative layout shift. ☛ Core web vitals and total blocking time. ☛ Eliminate render-blocking resources. ☛ Reduce initial server response time. ☛ Image optimization. ☛ Properly sized images. ☛ The updated PHP version. ☛ Reduce page size or requests. ☛ Make fewer HTTP requests. ☛ Add CDN (Cloudflare CDN) ✅ Profile Keywords: Web Design | Web Developer | Front-End Developer | Speed Optimization | Mock-Up, Design, Web & Mobile Design, Responsive Design | JavaScript Developer | TypeScript Developer | React Developer | Vue.js Developer | Node.js Developer| Angular Developer | Express.js Developer | Laravel Developer | Lumen Framework | API Development | Socket. io | Headless CMS | Strapi | Supabase | SQL Databases | MongoDB | DynamoDB | MariaDB | E-Commerce Web Design | Logo Design | WordPress | Web Development | Custom WordPress Website | WordPress Developer. ✅ I am Building Websites For The Following Services: Accounting | Air Duct Cleaning | Architecture | Art Consulting | Assisted Living | Baby Products | Bakery | Barber | Beauty Services | Boutique | Gym | Catering | Chiropractic | Cleaning | Consulting | Photography | Construction | Spa | Daycare | Dental | Dental Website | Drone Photography | E-commerce | Electrical | Fashion | Fundraising | Furniture | Gardening | Grocery Store | Home Decor | Interior Design | Legal | Locksmith | Management | Marketing | Mortgage Brokerage | Movers | Online Courses | Plumbing | Podcasting | Pool Cleaning | Real estate | Remodeling | Restaurant | Roofing | Security | Solar | Sports | Tax | Translation.. Thank you, Amit Dadhwal Full Stack Web Developer

➡️ I'm a full-stack WordPress, WooCommerce, and JavaScript developer w/ 20 years of experience. Invite me or save my profile for future reference. Always happy to help. ➡️ Skills: ★ WordPress ★ WooCommerce ★ 3rd-Party integrations (Stripe, MLS, Geolocation, Maps, social media, SaaS, etc) ★ Custom API integrations ★ Custom WP APIs ★ Headless WordPress ★ ACF - Advanced Custom Fields Pro ★ Custom Post Types ★ JavaScript ★ Custom Plugins and Themes ★ Troubleshooting and fixing WordPress errors ★ Elementor ★ New Sites (custom, existing or premium theme) ★ Responsive, Mobile-Friendly ★ Page Speed Optimization / Lighthouse scores ★ Theme Customization ★ Redirects ★ Security (Wordfence, etc) ★ GravityForms, Fluent Forms ★ Cloudflare ★ Google Analytics, HotJar, Facebook Pixel and other snippets ★ And more ➡️ Other Skills ● Alpine.js ● TailwindCSS ● Next.js ● Hasura ● HTML5 / CSS3 ● jQuery ● Sass, Less ● PHP / MySQL ● cPanel, WHM, MySQL Administration ● JavaScript ● React ● Node / NPM ● Git / GitHub / GitLab ● Netlify / Jamstack ● Webpack