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React (React.js) was developed at Facebook in 2011 and currently, it’s the most popular JavaScript library for building user interfaces. React is a declarative, efficient, and flexible for building user interfaces. User Interface is anything we show in front of users on their computers’ displays and building user interfaces is what React does really well.

User Interfaces are everywhere, from the simple buttons on a fridge to the dashboard of airplanes or cruise ships. Almost every of such interfaces can be successfully implemented with React.

Have an idea? Let’s discuss!

Nowadays React is one of the most popular JavaScript libraries in the world (according to Stack Overflow Most Popular Technologies). It has become highly popular because of its simplicity and flexibility. Many people consider that React is the future of web development. Part of this huge popularity comes from the fact that top corporations such as Facebook, PayPal, Uber, Instagram, and Airbnb utilize it to construct their product interfaces. This fact obviously attracts many programmers all over the world. Today the overwhelming majority of websites are being created with the help of React.

Advantages of React

  • React allows developers to write their web applications within JavaScript. JavaScript XML (JSX) is one of the greatest features that not only make React easy but entertaining also.
  • Debugging is very easy with React. When something goes wrong, it is important to be able to track quickly the mistake to its source in the codebase and then easily solve it.
  • React is a component-based library. Components let you split the UI into independent, reusable pieces (components), and work with each piece separately. That’s why components written by different people will work well all together.
  • React is super for SEO. Not every JavaScript frameworks are search engine friendly, but React (with server rendering) stays apart and helps to search WEB pages on the Internet efficiently.
  • React is also strong and enduring enough because in combination with ES6/7 it can stand up to any amount of load.

Why do we prefer React?

In our portfolio, we have many completed and active projects of different complexities. It was necessary to have a simple, readable and very efficient solution for creating UI for all of them. We found it in React.

React helps us to create UIs fast and clear, because of its component-oriented structure. We also can use React for different scaled projects and it is really cool thing about React. We like this framework because it is progressive. React develops constantly and a lot of many new and useful features appear.

Our projects


Medignition - Educational app for healthcare Innovation hub


ThoughtSpot - Developing internal resource management application


Data visualization for making right business decisions

Industries we excel at

Our clients are businesses of different types and sizes. We developed projects for companies in a range of industries: finance, media, healthcare, education, government, real estate/property, social media, travel/transport, e-business, e-commerce, to name a few.

Other services we provide

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Kenny R. Lienhard

Kenny R. Lienhard

CTO, Medignition Inc

We wanted to implement a new education platform that offered online courses in finance. The scope focused on the implementation of multiple user interfaces. UpsilonIT used React, GraphQL, and GatsbyJS. UpsilonIT had strong coding skills. The app had a clean codebase and complied with all specifications. They complied with our requirements for the UI. We communicated daily via Slack.

Matt Wong

Matt Wong

CTO, Civic Connect

Upsilon’s work was always on time and met all customer expectations. Their team had an ease of communication but what was the most impressive about them is the integrity and work ethic of each member. We had a business manager, a lead architect, and a mix of senior and regular engineers. The workflow was extremely effective - the teams had a regular cadence for communication.

Zhanar Serikpayeva

Zhanar Serikpayeva

Creative Consultant, Etage Group

We needed help with mobile app development, data analytics, and beacon installation to be able to collect, store, and analyze our customer data. The finished application met the requirements perfectly, with the team finding an excellent solution to collect, analyze, and store customer data. They were highly professional throughout the work, always making themselves available, and responding well to any changes.

Amazing companies who trust us: