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JavaScript Development Services

JavaScript Development - ScienceSoft

JavaScript is a client-side development language that helps create dynamic website content. Powered by Node.js, JavaScript serves as a fast server-side language for the entire application to be coded in JavaScript.

ScienceSoft’s developers leverage JavaScript to build richly interactive web and mobile applications with accelerated loading time.

Why ScienceSoft as a JavaScript Development Company

Our JavaScript Highlights

  • 20-year experience in JavaScript development services.
  • 95% of our projects utilize JavaScript.
  • Our developers have 5 years of experience with JavaScript on average.
  • Experience in building smart TV apps with JavaScript.
  • Cooperation setup within 5 days.

Facts about ScienceSoft

Our Development Skills

JavaScript frameworks and libraries

Angular JS
Practice 13 years
Workforce 100+

ScienceSoft leverages code reusability Angular is notable for to create large-scale apps. We chose Angular for a banking app with 3M+ users.

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React JS
Workforce 80+

ScienceSoft achieves 20–50% faster React development and 50–90% fewer front-end performance issues due to smart implementation of reusable components and strict adherence to coding best practices.

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Back end

Practice 10 years
Workforce 100

ScienceSoft delivers cloud-native, real-time web and mobile apps, web servers, and custom APIs ~1.5–2x faster than other software developers.

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Mobile dev tools and frameworks

React Native
Practice 8 years


Projects 300+

ScienceSoft reduces up to 50% of project costs and time by creating cross-platform apps that run smoothly on web, Android and iOS.

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Cloud services

SaaS platforms



Projects 10+

ScienceSoft achieves at least 20% increase in sales and 30% improvement in case resolution with well-thought-out and business-tailored Salesforce solutions.

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Practice 15 years


Projects 100+
Workforce 20+

Solid expertise in SharePoint services has earned ScienceSoft a place in Clutch’s list of Top SharePoint Developers in 2023.

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Practice 12 years

A certified ServiceNow partner, ScienceSoft offers a proprietary 4-level implementation model that helps deliver the best value from ServiceNow adoption.

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Development Areas We Use JavaScript in

Our Industry Expertise

Featured JavaScript Projects

Development of Mobile Video Streaming Apps for a TV Industry Leader

  • 5.5-year partnership.
  • Result: multi-screen apps for online streaming used by 6 major broadcasting companies in the US, and a propriety JS-powered framework to extend functionality and accelerate delivery of new features in all of the Customer’s products.

Migration of Medical Enterprise Management Software to Java and JavaScript

  • Replacing the outdated Flash front end with the JavaScript SPA interface.
  • Result: migration of 200+ screens to JavaScript with the use of the React framework.

Banking Application Development for an Asian Bank with 3+ mln Customers

  • Result: convenient user experience in the JavaScript application with rich functionality (split payments, spending limits, virtual cards, and more).
  • Techs & tools: JavaScript, Angular, HTML, CSS, WebKit, JSON.

Web App System Development for Car Insurance Claim Estimation Based on 3D Models

  • User interfaces built with the React library.
  • Result: the facilitated creation of interactive and structured web app screens.

Ecommerce Implementation for a Provider of a Fruit and Vegetable Delivery Service

Implementation of AJAX technology to enable dynamic loading of new content on the web pages without page refresh.

our Code Quality Practices in JavaScript Development

Adherence to code rules

  • Following the JavaScript style guide.
  • Creating descriptive names for code variables.
  • Leaving comments about what particular code functions and methods do.
  • Documenting what code does and what its dependencies are in a final README doc.
  • Splitting code into short and focused units.
  • Using framework APIs and third-party libraries.
  • Including unit tests.
  • Keeping code portable.
  • Using version control.
  • Using linting tools (SonarQube, ESLint).

Code review practices in our company

E.g., ad hoc review, pass-around, walkthrough, pull request, inspection.

Control of code quality metrics

Maintainability Index (MI), Cyclomatic Complexity (CC), Depth of Inheritance, Class Coupling, Lines of Code.

Our Experts Say

Vadim Belski, Head of Web Development at ScienceSoft

"JavaScript’s versatile ecosystem of frameworks continues to evolve and improve, opening new opportunities for developers. Today, JavaScript can be used anywhere from the web back end to the mobile front end and even desktop apps, meaning that a small team of JavaScript developers can cover most of a company’s development needs."

Our JavaScript Development Services

Team augmentation with JavaScript developers

Suitable for: covering the resource/skill gaps team with the needed number of JavaScript developers managed by you directly.

Pricing model: T&M.

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A dedicated JavaScript team

Suitable for: covering the resource/skill gaps with more than 4 developers managed by a PM on ScienceSoft’s side.

Pricing model: T&M

Discuss hiring a dedicated team

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