Friendly and personable senior full-stack developer who uses humor and emotional intelligence to build strong rapport with teams. Mateus demonstrates exceptional communication, asking clarifying questions, and proactively addressing feasibility concerns with clear documentation. His collaborative problem-solving approach and ability to deliver complete solutions efficiently, combined with transparency during timeline discussions, make him a trusted team member. Primary technical strengths lie in front-end expertise (Vue.js) and full-stack implementation, with growth opportunities in database design and SQL.
Hire Vetted Ajax Developers
Improve your website’s responsiveness with expert Ajax developers. Build dynamic, real-time features—hire now and onboard quickly.
David is a Middle to Senior full-stack engineer with 16 years of experience, specializing in Svelte, React, and TypeScript. He demonstrates solid architectural skills in SvelteKit, practical Node.js knowledge, and a clear focus on UI and product-facing features. He is best suited for front-end heavy or balanced full-stack roles with mentoring on backend complexity!
Bohdan is a Senior Front-end Web Developer with extensive experience and deep knowledge of the React ecosystem. He has also taken on Team Leader roles and is eager to further develop his leadership skills. Bohdan is communicative and adept at working with diverse clients. He is committed to continuous growth and is eager to further develop his leadership skills in addition to his technical expertise.
Luis is a Senior full-stack engineer with strong expertise in Node.js, React, and TypeScript, complemented by solid backend experience using Nest.js, GraphQL, and SQL/NoSQL databases. He has led teams and delivered scalable systems for large-scale applications, demonstrating clear communication, ownership, and a pragmatic, delivery-focused mindset during our vetting process. His code quality, architectural understanding, and problem-solving skills are consistently highlighted, with minor gaps in advanced TypeScript theory. Luis is fluent in English and comfortable with both frontend and backend leadership roles!
Meet Kate, an experienced full-stack web developer (back-end heavy) with a flair for solution architecturing and deep knowledge of C# and .NET Core. She can find a way to solve any task creatively and appreciates good teamwork. Kate always tries to be up-to-date with the latest tech trends, and she’s among the first ones to start using the updated version of .Net. Also, it's worth mentioning that Kate is a super client-oriented dev. Besides coding, she loves Scandinavian mythology and painting miniatures.
Ahmed is a senior back-end developer with over 20 years of commercial experience in C# and .NET, spanning legacy and modern frameworks. He has led modernization, integration, and migration projects, with strengths in system design, debugging, and pragmatic architecture. His expertise includes SQL Server, Oracle, Azure Service Bus, Blazor, and AI API integration. Feedback highlights strong ownership, client communication, and a product-first mindset.
As a strong senior full-stack developer, Denis brings nearly ten years of experience to the industry. Specializing in React and Next.js, he is fluent in TypeScript and JavaScript. Denis has extensive expertise in building MVPs and implementing business logic, consistently contributing to the successful launch of web products. His proficiency in creating project architecture makes him an excellent addition to any web development team.
Danyl is a senior front-end developer specializing in both web and mobile apps, with expertise in React and React Native. He manages full-cycle design tasks, handling everything from conception to completion while collaborating closely with project stakeholders. Danyl's experience includes serving as Head of Development, where he collected, defined, and translated user requirements into project designs and implementation plans. His portfolio counts projects for Toyota, Electrolux, and World Athletics.
With years of proficiency in React and Angular, Vitalii is a senior-level engineer. A great understanding of JS fundamentals and pleasant communication make Vitalii a go-to person to boost your team. Among his other strengths are profile education, experience with testing, and 9+ years of front-end commercial experience.
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Developers who got their wings at
How it works
How to hire a developer through our platform
Place a free request
Fill out a short form and check out our ready-to-interview developers
Tell us about your needs
On a quick 30-min call, share your expectations and get a budget estimate
Interview the best
Get 2-3 expertly matched candidates within 24-48 hours and meet the worthiest
Onboard the chosen one
Your developer starts with a project—we deal with a contract, monthly payouts, and what not
Testimonials
Reached out on Monday evening, connected Tuesday morning, had four qualified candidates by Wednesday.
We had an excellent experience. Process is fast from the initial intake through setting up payment.
The developers helped us speed up. They quickly learned their part of the app and we’re grateful for their contribution.
What we do for you
Vet every developer
All our developers are fully vetted and tested for both soft and hard skills. No surprises!
Learn your needs
On a quick 30-min call, share your expectations and get a budget estimate
Shortlist the best matches
Get 2-3 expertly matched candidates within 24-48 hours and meet the worthiest
Handle the paperwork
Your developer starts with a project—we deal with a contract, monthly payouts, and what not
The lemon tea
AJAX developers for pages that never reload
Forms that submit without a reload, live search, infinite scroll: AJAX is behind the parts of a site that feel instant. Our developers make them reliable too.

Race conditions handled
Candidates who forget stale requests, error states or CSRF tokens don't pass. Strong ones handle all three without being reminded.

Browse front-end profiles
Only Lemon lets clients search its vetted pool. Find AJAX work next to jQuery, React or Redux and pick the developers to meet.

Pay for what's logged
Small front-end fixes don't need a big contract. Billing follows logged hours, and unused prepaid time carries over.
Why hire AJAX developers
An AJAX developer makes your site feel like an app: fast updates, no full-page reloads.
Live search and filters
Results that update as users type, without hammering your server.
Forms without reloads
Validation and submission that keep users on the page.
jQuery to fetch
Old jQuery ajax calls moved to modern fetch and async code.
Infinite scroll
Feeds and catalogs that load more content smoothly and accessibly.
Case studies
The experience with Lemon.io has been fantastic. The interview process has been good, the caliber of people – excellent and integration has been very smooth.
We needed extra developers to clean off all these bugs so the company could skyrocket.
We needed extra AI engineers to keep our ambitious project running.
Frequently asked questions
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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Vetted AJAX developers are waiting for your request. Hire in-house or on contract. Zero complexity either way.
Senior engineers from $55/hr.
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