Hire the Best AJAX Developers

Clients rate our AJAX Developers
Rating is 4.7 out of 5.
4.7/5
Based on 4,264 client reviews
Randall B.

Oregon City, Oregon

$36/hr
4.6
379 jobs

Full stack developer w/ 12 years experience and focusing on WordPress development and giving clients what they want. Task oriented. Clear communicator. Loves the work, takes ownership of every project. I make myself readily available to my clients 5 days a week and sometimes 6. 'Randall is an honest and available developer. Most developers do not make themselves available to discuss requirements with the client and with the team but randall goes above and beyond the expectation' - Jonathon Bridges 'We really enjoyed working with Randall to complete a rush project. He was easy to work with, in communication regularly and helped us get the job done right.' - Kat Bundy -WordPress -PHP -JavaScript -jQuery -CSS3 -WooCommerce -SASS -mySQL Beyond just tweaking themes, I can offer a high level of WordPress customization, including but not limited to: custom plugins, custom widgets, custom post types and just about any kind of custom functionality you need. If I am one thing it's flexible, client have different methods and needs, no 2 clients are exactly alike. Listening to clients and giving them what they want is what I do. Sometimes a client need an advisor as well as developer, in those situations, I'm adept at providing these kinds a clients a road map to success. 'This was my first experience with Upwork. I couldn't have picked a better partner to help me with my task.' - Joe Cotellese "Randall is super easy to work with, he anticipates issues and is very timely in bringing them up. His skill and cooperation are excellent and he is very accessible. He gets the work done quickly, follows direction and does a great job! He can also think for himself and isn't shy about researching issues. I will happily continue to use Randall for my WordPress development. - Merry Gray "Randall is nothing short of amazing! He is the best developer I've ever worked with. He really came through for us." - Don Slepien

  • AJAX
  • Custom PHP
  • CSS 3
  • JavaScript
  • WordPress
  • jQuery
  • Adobe Photoshop
  • PHP
  • HTML5
  • Web Development
  • Twitter/X Bootstrap
  • WooCommerce
Gopal H.

Surat, India

$18/hr
4.9
63 jobs

🚀 Top Rated Plus | 9+ Years Experience | 8100+ Hours | 100% Job Success Hi, I'm Gopal, a Senior Full-Stack Web Developer & AI Application Specialist with over 9 years of experience delivering secure, scalable, and high-performance applications. I specialize in end-to-end development, from clean and responsive user interfaces to powerful backend systems. I also built and productionised AI platforms similar to Lovable, ChatGPT, and Base44, including private deployments, API integrations, and automation workflows. Whether you need a SaaS platform, an AI chatbot, a business automation system, an eCommerce solution, or a Base44 app rebuilt outside the platform, I deliver solutions that are reliable, maintainable, and built to scale. 🧠 AI & Automation ✅ Lovable-style AI apps ✅ ChatGPT-like conversational systems ✅ Base44 app duplication & migration ✅ AI agents & workflow automation ✅ API-driven AI integrations 🧱 Backend & Frameworks ✅ Laravel / Filament ✅ CodeIgniter ✅ WordPress (Custom Themes & Plugins) ✅ CakePHP 🎨 Frontend & Realtime ✅ ReactJS ✅ VueJS ✅ JavaScript (ES6+) ✅ jQuery / AJAX ✅ WebSockets 🗄️ Databases & APIs ✅ REST API development & integration ✅ MySQL ✅ MongoDB 🌐 Web & Design ✅ HTML / HTML5 ✅ CSS / Bootstrap ✅ Social media integrations ✅ Photoshop I communicate clearly in spoken and written English and am known for being proactive, reliable, and deadline-driven. Client satisfaction comes from clean code, transparency, and consistent delivery.

  • MySQL
  • Laravel
  • CodeIgniter
  • CakePHP
  • React
  • API Integration
  • Payment Gateway Integration
  • Vue.js
  • Ecommerce Website Development
  • React Native
  • REST API
  • AI Chatbot
  • AI Product Management
  • n8n
  • Make.com
  • HighLevel
Walker Bladimir A.

Cochabamba, Bolivia

$20/hr
4.8
556 jobs

Senior PHP Architect | Turning Complex Requirements into High-Performance Systems. With over 15 years of experience, I provide senior-level development for businesses that need reliability, speed, and technical mastery. I specialize in the PHP ecosystem, expertly managing everything from custom MVC applications to enterprise-scale Joomla and WordPress platforms. 🚀 Why I am different: I am a Performance Specialist. Most developers build sites that work; I build sites that fly. I consistently achieve Lighthouse scores of 90+, ensuring your business benefits from better SEO, lower bounce rates, and a premium user experience. My Core Expertise: 🔹 Joomla Authority: Expert in complex migrations (2.5 to 5.0) and custom component development. I’ve managed high-traffic US-based platforms with zero downtime. 🔹 WordPress Full-Stack: From custom backend plugin development and API integrations to pixel-perfect frontend design using Elementor and custom CSS. 🔹 Custom MVC Development: Deep mastery of Model-View-Controller architectures (Laravel, Yii2 and any Custom PHP sites). 🔹 API & Payment Solutions: Seamless integration of secure gateways (Stripe, PlacetoPay, WorldPay) and third-party API automations (Vonage, BigCommerce). The Technical Stack: ✅ Backend: PHP (Expert), MySQL, REST/SOAP APIs. ✅ Frontend: JavaScript, CSS3 (Advanced), HTML5, Responsive Design. ✅ Infrastructure: Linux, cPanel/WHM, DNS Optimization, SSL Security. My Commitment to You: I am a solo professional—not an agency. When you hire me, you get my direct expertise, clear communication in English/Spanish, and a commitment to 100% project success. Ready to optimize your platform? Let’s discuss your project today.

  • AJAX
  • HTML5
  • Joomla
  • CSS
  • Ecommerce Website
  • JavaScript
  • Web Development
  • WordPress
  • jQuery
  • PHP
  • WordPress Development
  • WooCommerce
  • WordPress Optimization
  • WPML
  • API Integration
  • Moodle
  • WordPress Plugin
  • Joomla Migration
  • cPanel
  • Page Speed Optimization
Gaurav Kumar S.

Lucknow, India

$30/hr
4.9
258 jobs

Salesforce Ridge Consulting Partner. 1,000+ projects across 12+ countries, 40+ certifications. I help mid-market & enterprise teams ship Salesforce that drives ROI. We're AnavClouds Software Solutions — a Salesforce Ridge Consulting Partner headquartered in India, serving clients across the US, UK, Canada, Australia, EU, and Middle East since 2016. What we deliver: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔹 SALESFORCE CONSULTING • Service Cloud, Sales Cloud, Experience Cloud, Marketing Cloud • Service Cloud Voice + Omni-Channel implementations • Apex, LWC, Flow Builder, custom integrations • Einstein AI, Agentforce, Data Cloud • AppExchange product development 🔹 AI & ANALYTICS (AnavClouds Analytics.ai) • Custom voice bots & conversational AI • LLM integrations (Claude, GPT, custom RAG pipelines) • AI-powered project management & sales automation • Predictive analytics & dashboards 🔹 STAFF AUGMENTATION • Dedicated Salesforce developers, admins, architects • Flexible engagement: hourly, monthly, project-based • Onshore PM + offshore delivery model Why teams hire us: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✓ Ridge-tier Salesforce Partner (top-rated by Salesforce) ✓ 40+ active certifications across Service, Sales, Marketing, Platform Dev ✓ 1,000+ successful projects, 12+ countries ✓ Daily standups, weekly demos, full Jira/Slack transparency ✓ India HQ + flexible timezone overlap with US/UK/AU clients ✓ NDA-ready, ISO-aligned delivery process Best fit for: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - Companies migrating to or scaling on Salesforce - ISVs building AppExchange products - Support orgs needing Service Cloud Voice / contact center on Salesforce - Founders building AI products who need engineering muscle - Teams needing reliable offshore Salesforce talent Let's talk — share your project, get a free 30-min discovery call + scoping doc.

  • AJAX
  • HTML5
  • JavaScript
  • AngularJS
  • jQuery
  • Bootstrap
  • Java
  • PHP
  • Payment Gateway Integration
  • OAuth
  • Apex
  • DHTML
  • Salesforce App Development
  • jQuery Mobile
  • Salesforce CRM
Ajay K.

Unnao, India

$20/hr
5.0
13 jobs

🌟 Transform Your Vision into Reality with a Trusted Tech Partner! 🌟 Hi there! I’m Ajay Kumar, a seasoned tech leader with 10+ years of expertise in Microsoft, Python, and Cloud technologies, leading a high-performing team that builds secure, scalable, and future-ready software solutions. Whether you’re building from scratch, modernizing legacy systems, or scaling cloud infrastructure — we make complexity feel simple. 🚀 What We Deliver 🔧 Full-Stack Development Expertise Backend Powerhouse: ✅ Microsoft Stack: ASP.NET MVC, .NET Core, REST APIs, JWT, Entity Framework, Microservices ✅ Python Stack: Django, FastAPI, Flask, Tornado, Bottle, Pyramid, Falcon, Eve — everything you need in Python development ✅ PHP Stack: Laravel, Core PHP, CodeIgniter ✅ AI/LLM Integration: Implement and fine-tune Large Language Models (LLMs) using OpenAI, HuggingFace, LangChain, RAG — for smart apps like: AI chatbots Document summarization Semantic search Recommendation systems Frontend Brilliance: ✅ Angular ✅ React.js ✅ Razor Pages ✅ HTML5/CSS3 ✅ JavaScript — responsive and modern UI/UX ☁️ Cloud & DevOps Mastery ✅ Azure: App Services, Functions, Blob Storage, Azure SQL, Azure AD, Azure DevOps ✅ AWS: Lambda, EC2, S3, RDS, API Gateway ✅ DevOps: CI/CD Pipelines, Docker, Kubernetes, Terraform, GitHub Actions, GitLab CI ✅ Cloud-Native Deployments: Secure and cost-efficient infrastructure 🔐 Secure, Scalable Data & Auth Systems ✅ Databases: SQL Server, PostgreSQL, MySQL — optimized for performance & scalability ✅ Authentication: JWT, OAuth2, Azure AD, Identity Server ✅ Version Control: Git, GitHub, GitLab, GitExtensions 🏭 Industries We Empower We serve FinTech, Healthcare, eCommerce, Logistics, EdTech, Real Estate, and 15+ other industries — delivering domain-aligned tech solutions with precision. 💡 Why Partner With Us? ✅ End-to-End Product Ownership — from UI to DevOps ✅ Microservices-Driven Architecture — effortless scalability ✅ Security-First Mindset — best practices & compliance (GDPR, HIPAA, etc.) ✅ Transparent Agile Development — sprint planning, daily standups, and demos ✅ Fast LLM Integration — build AI-powered features in days ✅ Full Python Stack coverage — Django, FastAPI, Flask, Tornado, Bottle, Falcon, Eve & more 🕒 Availability & Reliability ✅ 24/7 Support & Monitoring ✅ Flexible Engagement Models (Dedicated, Hourly, Fixed) ✅ Rapid Onboarding & Transparent Communication 🔖 #TechPartner #AzureDeveloper #AngularDeveloper #FullStackDevelopment #CloudSolutions #DevOps #PythonDevelopment #MicrosoftTechnologies #FastAPI #Django #Flask #LLMIntegration #Microservices #ASPNetCore #ReactJS #DatabaseManagement #CyberSecurity #AgileDevelopment #DigitalTransformation #eCommerce #Healthcare #FinTech #Logistics #PythonFullStack

  • HTML5
  • Bootstrap
  • H2 Database Engine
  • AWS Lambda
  • Jenkins
  • Kubernetes
  • ASP.NET
  • ASP.NET MVC
  • ASP.NET Core
  • ASP.NET Ajax
  • ASP.NET Web API
  • Entity Framework
  • LINQ
  • Microsoft SQL Server
Mohamed A.

Giza, Egypt

$25/hr
4.8
163 jobs

🏆 Top Rated Plus Freelancer ⭐ 100% Job Success Score ⏰ 8,800+ Hours Delivered 💼 15+ Years Experience in Software Engineering I am a Professional Software Engineer, WordPress Systems Architect, Backend Developer, and Cross-Platform Application Developer with a Bachelor’s degree in Computer Engineering and over 15 years of experience designing and building complex production systems. I specialize in building and scaling enterprise-grade platforms including WordPress systems, WooCommerce stores, SaaS applications, APIs, mobile applications, AI systems, streaming platforms, and high-traffic infrastructures. My core expertise is not just development, but system design, architecture, and solving deep production-level problems such as failed migrations, performance bottlenecks, system instability, scalability issues, and complex backend logic challenges. 🧠 Backend & System Engineering I design and build scalable backend systems using custom PHP architecture, REST APIs, and modular system design approaches. My work includes microservices-style backend logic, business automation systems, and enterprise-level application structures. I also create full software architecture designs and system diagrams for web applications, APIs, SaaS platforms, and mobile ecosystems. 🧩 WordPress & WooCommerce Engineering I specialize in advanced WordPress development including custom plugins, WooCommerce customization, performance optimization, and production-level debugging. I also work with WordPress as a headless CMS, where it is used as a backend content system connected to modern frontend applications via APIs. 🔌 API & Integration Systems I build REST APIs and integration layers for web and mobile applications, including WooCommerce APIs, Shopify applications, third-party system integrations, and cross-platform data communication systems. 📱 Cross-Platform Mobile & Application Development I develop backend systems and application architectures for cross-platform mobile applications, including Android, iOS, and hybrid apps. I have experience building and publishing hybrid mobile applications using frameworks such as Cordova, enabling web-based applications to be deployed as native mobile apps across platforms. My work includes: Mobile backend APIs Real-time communication systems Data synchronization layers Scalable app backend architecture Hybrid mobile app development (Cordova-based applications) 🎬 Media & Streaming Systems I build media infrastructure systems including: HLS video streaming platforms Scalable media delivery systems Content distribution architecture High-load streaming backend systems 🤖 AI & Automation Systems I design and implement AI-powered systems and automation workflows, including: AI agents for business automation Intelligent backend workflows Data processing pipelines Automated decision systems Business logic automation systems 🗄️ Data & Storage Systems I work with advanced data architectures including: MySQL, MariaDB, SQLite, MongoDB, Oracle File-system-based data architectures (FHS-style systems) Custom storage logic systems High-performance data processing pipelines Data extraction and aggregation systems ⚙️ Infrastructure & Server Engineering I handle infrastructure-level engineering including: Linux & Windows server management Hosting environments (cPanel, VPS, dedicated servers) Performance optimization (CPU, memory, DB tuning) Reverse proxy and CDN setups 🎨 Frontend & UI Engineering I convert Figma designs into production-ready WordPress themes and frontend systems, ensuring responsive, optimized, and scalable UI implementations. 📊 Data Extraction & Crawling Systems I build structured data extraction systems, crawling pipelines, and API-based data aggregation systems for business intelligence and automation workflows. 🧱 SaaS & Platform Engineering I build full SaaS and platform systems including: Multi-user platforms Marketplace systems Subscription systems High-traffic content platforms Enterprise dashboards and admin systems 🔥 WHAT I SOLVE BEST I specialize in solving difficult production problems including: Broken WordPress / WooCommerce systems Website full migrations High CPU / performance issues Database bottlenecks API integration failures Scaling and infrastructure instability Complex backend debugging Speed optimization tasks 🧠 CORE TECH STACK PHP, WordPress, MySQL, MariaDB, MongoDB, SQLite, File-system based architectures, Oracle, REST APIs, Linux, OpenLiteSpeed, cPanel, LiteSpeed Cache, caching systems, security hardening, WooCommerce, cloud infrastructure, mobile APIs, and automation systems. 🎯 WORKING APPROACH I focus on delivering clean, scalable, and production-ready systems that solve real business problems. My approach is simple: understand the system deeply, design the correct architecture, identify root causes accurately, and implement long-term stable solutions that improve performance, scalability, and reliability.

  • AJAX
  • API Integration
  • PHP
  • Data Scraping
  • jQuery
  • Page Speed Optimization
  • API Development
  • Plugin Development
  • PHP Script
  • API
  • WordPress
  • WooCommerce
  • SaaS
  • SQL
  • Web Application

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Don't just take our word for it

What is AJAX (Asynchronous JavaScript + XML)?

AJAX (Asynchronous JavaScript + XML) is a group of interrelated client- and server-side development technologies that allows parts of a webpage to be updated without having to reload the entire page—think of sites like YouTube, Google Maps, Gmail, and tabs within Facebook. It changed usability and the speed of web applications with its innovative concept: asynchronously exchanging small amounts of data with the server behind the scenes, without affecting the rest of the page.

AJAX makes features like drop-down menus, predictive text, auto-filled text, and more possible, all without clicking Refresh. What it means for servers is less stress on the network and faster operations. That’s the core benefit of AJAX-enabled sites: overall, they’re more responsive and very efficient on both sides.

How does AJAX work?

AJAX calls are asynchronous, meaning they’re made behind the scenes, independently from each other and the site as a whole. When a browser makes an AJAX call to the server, it isn’t stuck waiting for a response, halting all of the site’s functionality. Instead, the web service on the server will send the data back to the browser once the task is completed, where client-side scripts will process the response and deliver it to the user.

AJAX breakdown

AJAX uses the following technologies:

  • XML or JSON: the text-only format used to transfer data from server to browser script. Developers are increasingly using JSON over XML because of its native JavaScript compatibility.
  • CSS: the language used to style how the data will look onscreen
  • JavaScript: displays the data in the browser and processes user requests/interactions like clicks
  • XMLHttpRequest objects: the keystone of AJAX, they actually retrieve the data with the server behind the scenes. All modern browsers support XMLHttpRequests.

Callbacks vs. Postbacks.

Pre-AJAX, the rules for client calls to the server—basically, anything the browser requests from a database to make a site responsive—were “postbacks,” plus server-side processing. Post-AJAX, the browser can “callback,” requesting small amounts of data directly from the server—all without needing to wait for a postback.

Benefits of AJAX

  • Better speed and performance
  • More responsive, user-friendly websites and applications
  • Ease of development, thanks to JSON, jQuery, and compilers that help to streamline complex JavaScript code
  • Browser- and platform-independent. Also, Microsoft offers the AJAX Control Toolkit integrated into Visual Studio on the ASP.NET platform.
  • Ideally implemented for updating small bits of information within a web application
  • Allows text box autocomplete and predictive text
  • Won’t slow down with limited bandwidth. With AJAX callbacks, the server won’t get overloaded by requests, which would otherwise cause the app to slow down.

AJAX is just one advancements in the front-end development landscape—learn more about front-end web development and how AJAX fits into the client-side technology landscape as a whole.