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Plug vetted, specialist Javascript developers into your squad, flexibly!

Hire intelligently matched Javascript developers from vetted nearshore teams, when you need them, to flexibly deliver your build across tech stacks.

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Fast, Easy

Start working with vetted Javascript developers in just 2 weeks.

We take the guesswork out of hiring flexible talent. Deliver your digital roadmap even fast, with intelligent matching powered by our own platform.

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Top Quality

We believe in quality over quantity, when finding you developers.

Our dedicated in-house team screens, vets and onboards each developer before they can submit any project briefs. This means you only see the best of the best.

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Ensuring the Right Fit
at Every Step

At Deazy we provide more than just expert Java developers.

Our experienced UK team oversees each project delivery ensuring everything runs smoothly. With decades of experience across dozens of industries, no project is too ambitious for us.

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“The quality and flexibility of development teams from Deazy have helped support us across multiple product roadmaps. The augmented developers have integrated seamlessly into the internal teams from both a culture and capability perspective, and they've all quickly added value.”

Colin Woods CTO at the RAC

“Deazy’s developers play a vital role in the delivery of Orderbee. The flexibility of their teams and speedy onboarding process, allowed us to start adding value to our business quickly, free up in-house resources when we needed them, and continue delivering our new product alongside our client pipeline.”

Nick Holroyd-Doveton Managing Director, Orderbee

“Deazy made the daunting task of changing our IT providers much simpler than expected. Deazy took the time to understand our business model and they continue to constructively collaborate with us. The way they structure their team provides clarity with excellent communication and delivery.”

Marc Narbeth - Fast Keys Director
Marc Narbeth Director at FKS

Developer profiles

Headshot 3


Mobile Developer Location: Mexico

Gabriel is a Javascript developer working at a tech house in Mexico City. He enjoys working on complex back-end development projects.

Experience 5 years
Availability Full-time
Experience in
Javascript Vue.js Android
Screenshot 2022-02-07 at 17.02.17


Senior Developer Location: Poland

Jan is a Javascript developer working from Warsaw, Poland. He enjoys working on support and maintenance Java projects.

Experience 7 years
Availability Full-time
Experience in
Javascpirt .NET Node


Mobile Developer Location: Poland

Szymon is a mobile developer with 10+ years experience working with a large variety of tech stacks, including React Native and Vue.

Experience 5 years
Availability Full-time
Experience in
React / React Native Vue Angular

Hire Javascript developers on-demand

Book a Call

Hiring Javascript Developers with Deazy:

As Easy as 1, 2, 3!

Step 1

Brief our team on your project:

Fill out our simple on-site briefing flow and chat through your
requirements with a helpful member of the Deazy team.

Step 2

Estimates and proposals shared via Deazy platform:

View your project estimate, screen potential candidates and find the perfect dev talent via Deazy’s automated platform.

Step 3

Project kick off!:

Get a Javascript developer or whole team working on your project in as little as two weeks. Now all you have to do is sit back, relax and watch Deazy do what we do best - making development easy!

Consultancy Specialising in Organisational Change - Full Build

Fresh build of a platform to facilitate and manage custom workplace surveys, using question banks. The survey results were visualised by our design team to create intuitive displays.

Java Javascript React Spring
Backend Webflow
Dev delivery:
6 months Ukraine Ukraine
View details +
Full build

European Automotive Scale-up - Support & Maintenance

Continuous improvement programme working on new feature development, scalability, localisation and bug fixing for a digital garage platform.

Java Javascript PHP CodeIgniter
Android Backend Web
Key integrations:
ADG (Vehicle Data Provider)
Dev delivery:
Ongoing Poland Poland
View details +
Full build

Iconic Global Soft Drink Brand - Continuous Improvement

Continuous improvement for a mobile app enabling consumers to 'mix' multiple soft drinks and create their own unique drink at fast food soft drinks dispensers.

Java Objective C
Mobile (Native)
Key integrations:
Dev delivery:
1 month Poland Poland
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Full build

Premium Sports Events Concierge Service Start-up

Design, creation and build of a premium concierge platform used for corporate entertainment at sports events.

Java Javascript React Spring React Native
Backend Mobile (Cross-platform) Web
Dev delivery:
6 months Poland Poland
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Full build

World War 2 Memorial Centre

Creation of an application used to guide users around a memorial center and augment their experience through exclusive mobile content.

Java Swift
Mobile (Native)
Dev delivery:
6 months Ukraine Ukraine
View details +
Full build

What is JavaScript?

JavaScript is a computer programming language that is one of the core languages of front-end web development. It is used extensively on websites with reporting that 98% of all websites use JavaScript in their tech stack.

In simple terms JavaScript works with HTML and CSS when developing websites. While the latter two provide structure and design for web pages JavaScript brings dynamism and interactivity.  Although it is possible to build websites without it, these web pages will only be able to have static features. 

Modern websites and mobile apps are expected to be dynamic and interactive in some way. For instance, button state changes, such as a highlight or colour change on hover are powered by JavaScript. Features like this have become so ubiquitous they often go unnoticed by users unless they are missing. 

 From these simple user interaction signals to complex features on web pages and fully fledged apps and games JavaScript is an essential part of the tech stack.

Not to be confused with Java programming language, JavaScript (often referred to as JS) on its own is mainly a client side (front-end) technology, although frameworks like NodeJS exist that make it possible to create server-side (back-end) apps, which allow developers to create scalable network applications that can process many simultaneous user requests. 

Developed in the early 90s by Netscape and initially called LiveScript, JavaScript was released in December 1995. It was quickly adopted by all major browsers, although in the early days they were not particularly compatible for developers and led to the “best viewed in Internet Explorer” statements as seen on many websites of the time.

JavaScript Versioning can be confusing, as JavaScript is actually owned by Oracle, and is actually just an implementation of ECMAScript, a standard for programming languages like JavaScript.  EcmaScript is published (updated) annually with the last specification update in June 2022 and the next being 2023 and so on.  

Today, ES2022 is the current version of JavaScript.  

Despite foundations in web development, JavaScript is also used in other areas.

  • Mobile App development
  • Game development – particularly browser games
  • Software Applications using Frameworks
  • Interactive Web Development

Why use JavaScript

As previously discussed, it is almost essential to use JavaScript in a web project, although there are other options such as Dart, JavaScript remains the number one programming language in the world for some very good reasons.


JavaScript is executed directly within the browser. As it is faster to run code within the browser in its native language than it is to execute code on the server, using JavaScript increases loading speeds.  

JavaScript is currently the only programming language native to the web browser which means that no network calls to the server are needed, unless additional resources are required.

Flexibility and Interoperability

JavaScript works well with other scripting languages and can be used in any browser and web page.  Due to this interoperability, it can be used in applications of all kinds and can actually support other languages like PHP.

According to there are over 1 million JavaScript libraries available to help development of features and functions and there are additional front-end frameworks like Angular and ReactJS that developers can access.

Updated Annually

ECMA updates the JavaScript standards annually ensuring the most modern standards are in use at all times.

Why hire JavaScript developers

JavaScript developers are an essential part of any web project.  Whether hiring a JavaScript developer or a front-end developer is the best option will depend on the project requirements.  A simple website project may be handled fully by a front-end developer while anything more complex may require a dedicated JavaScript developer.

Only a skilled and experienced JavaScript developer will be able to deliver outstanding results when using JavaScript to create rich, responsive interfaces for web applications. Any web development project will benefit from hiring a JavaScript developer to achieve an ambitious and successful web project.

The business case for hiring a dedicated JavaScript developer is strong.  The power of JavaScript as a programming language coupled with a developer’s skills will provide accurate insights into how challenging, time consuming or costly a project will be while ensuring that projects are delivered on time, and at the estimated cost.  

Why use Deazy to hire JavaScript developers

Throughout this article there has been mention made of the wide range of projects that JavaScript can be used in. While a high-level JavaScript developer can work on all projects as the language remains the same, some will have better understanding of desired outcomes in one field than another.

A developer with focus on front-end web development may be a better fit for a website project than one with a focus on back-end apps using frameworks like NodeJS as an example.  That is where Deazy excels, matching highly skilled and vetted JavaScript developers with the needs of the project.

Since JavaScript is such a popular programming tool, hiring JavaScript developers is not always as easy as expected. JavaScript developers are also greatly sought after by more and more employers as the consistent growth in its use continues.

All sizes and types of projects use JavaScript in some way, this means the demand for developers specialised in JavaScript, who can work flexibly on projects, is higher than ever.  With a limited pool of certified developers and massive demand for the skillset, hiring high quality JavaScript certified developers is not only a time-consuming task but can also be an expensive affair.  

 Deazy’s unique, limitless ecosystem of pre-vetted, nearshore JavaScript developers ensures you get access to intelligently matched, flexible talent. Whether you are looking to start a new project from scratch or to augment an existing in-house team, Deazy provides flexible access to top talent from 60+ tech stacks, including certified JavaScript developers. 

 Deazy’s unique team-matching algorithm allows us to match your project or team augmentation requirements with developers who have experience in similar fields, prefer similar type engagements and enjoy working in your preferred team structure. 

Deazy also screens all their teams for culture, comms, tech knowledge and certification, before adding them to Deazy’s ecosystem of available candidates. Any candidates who apply to your projects have already been approved as legitimate, and qualified. This means our team saves you time finding reliable JavaScript developers who are well suited for your project before you even have to review CVs and project briefs.   

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