Hire AJAX developers

Improve your website’s responsiveness with expert Ajax developers. Build dynamic, real-time features—hire now and onboard quickly.

1.5K+
fully vetted developers
24 hours
average matching time
2.3M hours
worked since 2015
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Hire remote AJAX developers

Hire remote AJAX developers

Developers who got their wings at:
Testimonials
Gotta drop in here for some Kudos. I’m 2 weeks into working with a super legit dev on a critical project and he’s meeting every expectation so far 👏
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Francis Harrington
Founder at ProCloud Consulting, US
I recommend Lemon to anyone looking for top-quality engineering talent. We previously worked with TopTal and many others, but Lemon gives us consistently incredible candidates.
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Allie Fleder
Co-Founder & COO at SimplyWise, US
I've worked with some incredible devs in my career, but the experience I am having with my dev through Lemon.io is so 🔥. I feel invincible as a founder. So thankful to you and the team!
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Michele Serro
Founder of Doorsteps.co.uk, UK
View more testimonials

How to hire AJAX developer through Lemon.io

Place a free request

Place a free request

Fill out a short form and check out our ready-to-interview developers
Tell us about your needs

Tell us about your needs

On a quick 30-min call, share your expectations and get a budget estimate
Interview the best

Interview the best

Get 2-3 expertly matched candidates within 24-48 hours and meet the worthiest
Onboard the chosen one

Onboard the chosen one

Your developer starts with a project—we deal with a contract, monthly payouts, and what not

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What we do for you

Sourcing and vetting

Sourcing and vetting

All our developers are fully vetted and tested for both soft and hard skills. No surprises!
Expert matching

Expert
matching

We match fast, but with a human touch—your candidates are hand-picked specifically for your request. No AI bullsh*t!
Arranging cooperation

Arranging cooperation

You worry not about agreements with developers, their reporting, and payments. We handle it all for you!
Support and troubleshooting

Support and troubleshooting

Things happen, but you have a customer success manager and a 100% free replacement guarantee to get it covered.
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FAQ about hiring AJAX developers

Is AJAX frontend or backend?

AJAX calls are made by JavaScript front-end applications to address the back-end services and APIs and to get data from the HTTP server.

Is AJAX still used today?

Indeed, AJAX is still in use and very popular in 2024. It helps a web browser communicate through a server for quick and asynchronous responses due to user interactions without refreshing a full page. On top of that, being the main part of building interactive web applications, where the data is fetched, updated, or submitted in the background to the user, it improves user experience, reducing latency, and enhancing efficiency.

What is AJAX best used for?

AJAX is ideal for developing complex web applications. It lets web pages be updated in the background without the complete web page reloading through sending and receiving a small amount of data from the server at a time. Thus, it provides a more efficient and faster experience.

What does AJAX stand for?

AJAX stands for Asynchronous JavaScript and XML.

What is a real-life example of AJAX?

A good real-life case of AJAX is Google’s search bar. As you type, similar searches appear below, and you can scroll through them with the up and down keys. Autocomplete helps users filter inputs when filling in forms or searching. This makes searches quicker and more fun because users get results immediately.

How do I hire an Ajax developer?

If you are thinking about hiring an AJAX developer, there are a few steps you need to consider first:
1) Define your project scope, its features, functionalities, and objectives.
2) Define roles and responsibilities.
3) Search for a developer on freelance platforms, job boards, etc. If you need a quick solution, Lemon.io can match you with a skilled professional within 48 hours.
4) Screen their CV and portfolio. Target candidates who have strong skills in JavaScript, AJAX techniques like XMLHttpRequest or fetch API, knowledge of asynchronous programming, experience with front-end frameworks like React or Vue.js, and a portfolio reflecting the practical application of dynamic web applications.
5) Conduct soft skills and hard skills interviews.
6) Check references.
7) Make an offer and onboard the candidate.

How quickly can I hire an Ajax developer through Lemon.io?

You can hire an AJAX developer through Lemon.io in 48 hours. All the developers have already passed our vetting process, including VideoAsk, their me.lemon profile completion, a screening call with our recruiters including various technical questions, and a technical interview with our developers. We will ensure a fast and comfortable hiring process while matching you with the best AJAX developers in the industry, as only 1% of applicants are accepted into our community.

What is the no-risk trial period for Lemon.io AJAX developers?

Lemon.io provides up to 20 prepaid risk-free hours with our AJAX developer to review how they complete real tasks on your projects. Otherwise, it is a zero-risk replacement guarantee: if the previous developer doesn’t meet your expectations or misses deadlines, we will find a new one for your project.

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Ready-to-interview vetted AJAX developers are waiting for your request

Yuliia Vovk
Yuliia Vovk
Recruiter at Lemon.io

Hiring Guide: AJAX Developers

Looking to hire AJAX developers? AJAX (Asynchronous JavaScript and XML) enables seamless, real-time data interaction between the browser and the server—without reloading the entire page. Skilled AJAX developers are the driving force behind fast, dynamic, and interactive web experiences. Whether you’re building a live dashboard, chat application, or eCommerce platform, hiring experienced AJAX professionals ensures smooth user experiences and optimal front-end performance.

Why Hire AJAX Developers?

AJAX developers specialize in creating responsive, data-driven web interfaces that update instantly without full page reloads. They enhance performance, improve user engagement, and reduce server load. By leveraging technologies like JavaScript, JSON, and REST APIs, these developers build highly interactive, real-time web applications that feel native and fluid.

Core Responsibilities of AJAX Developers

     
  • Develop interactive web applications using AJAX, JavaScript, and JSON.
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  • Integrate RESTful and GraphQL APIs for dynamic data fetching and submission.
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  • Optimize asynchronous requests for speed and reduced server overhead.
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  • Implement error handling, loading states, and retry mechanisms for reliability.
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  • Collaborate with back-end developers to ensure secure data flow.
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  • Maintain compatibility across browsers and mobile devices.
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  • Enhance UX with real-time updates, live feeds, and auto-refresh components.

Key Technical Skills to Look For

     
  • Languages & Tools: JavaScript (ES6+), HTML5, CSS3, JSON, XML.
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  • Frameworks & Libraries: jQuery, React, Vue.js, Angular, Node.js.
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  • Networking: RESTful APIs, WebSockets, and Fetch/Axios for AJAX calls.
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  • Testing: Jest, Mocha, or Cypress for asynchronous testing.
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  • Performance Optimization: Request throttling, caching, and lazy loading.
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  • Security: CORS handling, CSRF prevention, and input validation.
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  • Version Control: Git and GitHub for collaborative workflows.

When to Hire AJAX Developers

     
  • When building web apps requiring real-time updates (e.g., chat apps, dashboards).
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  • When optimizing web pages for faster response and reduced reloads.
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  • When adding dynamic features such as search suggestions or live forms.
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  • When developing data-heavy apps with asynchronous interactions.
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  • When integrating multiple data sources and APIs seamlessly.

How to Hire the Right AJAX Developer

1. Define Your Project Goals

Outline your app’s data flow, scalability goals, and performance needs. AJAX developers can optimize UI responsiveness based on how frequently your app exchanges data with the backend.

2. Assess Their Mastery of Asynchronous Programming

Great AJAX developers understand event loops, promises, and async/await patterns. Review code samples or GitHub repositories to gauge their proficiency with handling asynchronous operations efficiently.

3. Interview Questions

     
  • What is AJAX, and how does it differ from traditional HTTP requests?
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  • How would you use the Fetch API to retrieve and display data asynchronously?
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  • How do you handle CORS issues in AJAX applications?
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  • Explain how you would implement error handling for failed AJAX calls.
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  • What’s the difference between synchronous and asynchronous code execution?
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  • How do you optimize multiple concurrent AJAX requests?

4. Technical Assessment

Give the candidate a task to build a small app—like a live search box or news feed—that fetches and updates data asynchronously. Evaluate their API integration, error handling, and responsiveness.

Average Cost of Hiring AJAX Developers

Rates depend on skill level and experience:

     
  • Junior Developers (1–3 years): £25–£45/hour
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  • Mid-Level Developers (3–6 years): £50–£75/hour
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  • Senior Developers (7+ years): £80–£120/hour

Through Lemon.io, you can hire top-tier AJAX developers who specialize in building responsive, API-driven applications with clean, maintainable, and scalable code.

Why Hire Through Lemon.io?

Lemon.io connects you with pre-vetted AJAX developers experienced in building interactive and high-performing web interfaces. Our talent pool consists of professionals who understand how to balance performance, usability, and scalability in modern applications.

Hire Expert AJAX Developers →

Related Skills

FAQs About Hiring AJAX Developers

 
  

What does an AJAX developer do?

  
   

An AJAX developer builds interactive web applications that update content dynamically using asynchronous JavaScript and API calls, without requiring full page reloads.

  
 
 
  

Why should I hire an AJAX developer?

  
   

AJAX developers improve UX by making applications faster and more responsive, using real-time data updates and seamless communication with the backend.

  
 
 
  

Is AJAX still relevant in 2025?

  
   

Yes. AJAX remains a core concept behind modern front-end frameworks like React, Vue, and Angular, which all rely on asynchronous data communication principles.

  
 
 
  

What technologies should an AJAX developer know?

  
   

They should be proficient in JavaScript, Fetch API, JSON, RESTful APIs, and frameworks like React or Angular for modern asynchronous development.

  
 
 
  

Can I hire remote AJAX developers through Lemon.io?

  
   

Absolutely. Lemon.io provides access to vetted remote AJAX developers who excel in building interactive, API-driven web applications.