Expert JavaScript-focused development with a wide variety of libraries and frameworks to meet your specific frontend needs.
With over 100 JavaScript developers, we are large enough to scale up on demand, yet small enough to value personal relationships.
Expert JavaScript-focused development with a wide variety of libraries and frameworks to meet your specific frontend needs.
With over 100 JavaScript developers, we are large enough to scale up on demand, yet small enough to value personal relationships.
JavaScript is essential to not just create, but enhance the frontend. If your project requires any form of responsive frontend design, we can easily develop it using the more advanced UI functionalities JavaScript offers.
A frontend web programming language supported by all modern browsers, JavaScript can also serve as a backend language with the help of Node.js.
We have extensive experience in custom JavaScript development, including the most widely used JavaScript frameworks—Angular, React, and Vue.js—but we’re ready and able to use any frontend tool you require. There’s nothing our frontend developers and Product Design team can’t build for you.
—and what better way is there to do frontend than with JavaScript?
We’ve been developing frontend in JavaScript virtually as long as we’ve been developing backend in Python. Since we mostly build websites and web apps that require mobile components, up to 90% of our projects involve frontend work.
Over the years, we’ve been recognized by leading authorities in the field like Clutch, Deloitte, or the Financial Times on multiple occasions.
We have 100+ JavaScript developers and 18+ years of experience under our belt to meet your custom JavaScript development needs. We can support your backend development with frontend every time.
Our expert JavaScript specialists will make sure your software project stands out from the crowd and serves your users like no other on the market.
Team extension is the simplest way to increase your development capacity. By adding external team members, you can speed up projects in progress or kick off new projects alongside your current work. Think of it as adding new talent to your roster instantly—but at a different office.
Team extension is the simplest way to increase your development capacity. By adding external team members, you can speed up projects in progress or kick off new projects alongside your current work. Think of it as adding new talent to your roster instantly—but at a different office.
Developed and maintained by Google, Angular leverages all the strengths of JavaScript to build your product safely and reliably. The framework favors thorough testing and is compatible with multiple platforms, offering a robust and comprehensive package of both tools and design patterns to facilitate the development of your software.
Using the Model-View-Controller pattern, Angular is popular for its clean code structure and two-way data binding, saving you time and making it easy to modify your app. Highly functional, regularly updated, and well documented, the technology’s here to stay.
Created by Facebook for the specific purpose of building interactive user interfaces, React makes the development process effortless and painless. This declarative, component-based library makes your code simpler to write and debug, while smoothly interfacing with other frameworks and libraries.
Modern, well supported, and ever gaining in popularity, React can power mobile apps with React Native and be rendered on the server with Node.js. To make your life easier, it also gives you the option to write new features without rewriting your existing code.
A progressive framework for building single-page applications and user interfaces, Vue.js enriches your product with efficiency and interactivity. Powerful, flexible, and superbly documented, the framework was designed and developed as the modern, future-proof frontend solution from the start, with incremental adoptability in mind.
Vue.js combines many great qualities of other technologies, while staying as open and compatible with the rest of your tech stack as possible. Championing approachability and user-friendliness, it will work well with any other frontend tool you’re using.
Developed and maintained by Google, Angular leverages all the strengths of JavaScript to build your product safely and reliably. The framework favors thorough testing and is compatible with multiple platforms, offering a robust and comprehensive package of both tools and design patterns to facilitate the development of your software.
Using the Model-View-Controller pattern, Angular is popular for its clean code structure and two-way data binding, saving you time and making it easy to modify your app. Highly functional, regularly updated, and well documented, the technology’s here to stay.
Created by Facebook for the specific purpose of building interactive user interfaces, React makes the development process effortless and painless. This declarative, component-based library makes your code simpler to write and debug, while smoothly interfacing with other frameworks and libraries.
Modern, well supported, and ever gaining in popularity, React can power mobile apps with React Native and be rendered on the server with Node.js. To make your life easier, it also gives you the option to write new features without rewriting your existing code.
A progressive framework for building single-page applications and user interfaces, Vue.js enriches your product with efficiency and interactivity. Powerful, flexible, and superbly documented, the framework was designed and developed as the modern, future-proof frontend solution from the start, with incremental adoptability in mind.
Vue.js combines many great qualities of other technologies, while staying as open and compatible with the rest of your tech stack as possible. Championing approachability and user-friendliness, it will work well with any other frontend tool you’re using.
We’re proud to support an active developer community. Meet.js is a series of events we run for JavaScript developers. It gives people the chance to share knowledge and stay up to date with the latest developments. It’s a space where developers can improve their skills alongside their peers.
Through initiatives like Meet.js, we have close links with the developer community. Not only can we help people develop and inspire others, but we’re also building strong relationships with JavaScript specialists with growing areas of expertise.
We’re proud to support an active developer community. Meet.js is a series of events we run for JavaScript developers. It gives people the chance to share knowledge and stay up to date with the latest developments. It’s a space where developers can improve their skills alongside their peers.
Through initiatives like Meet.js, we have close links with the developer community. Not only can we help people develop and inspire others, but we’re also building strong relationships with JavaScript specialists with growing areas of expertise.
On your path to greater velocity and flexibility, we’ve got you covered every step of the way.
Smart move. By all means, keep your existing team if it works for you. Your external team will simply complement what you’re already doing while bringing in a fresh perspective and greater scalability.
You can scale the team down or move development entirely back in-house.
We’ve been on the market since 2005 and 99% of our clients are outside of Poland, so we have lots of experience cooperating across cultures.
You don’t want to just ship features; your software should help your business succeed in the market. That’s why we’ll begin our cooperation with a discovery process to understand what you’re building, for whom, and why.
Zappi connects substitute teachers with cover managers at schools.
Using the React Native app, teachers can find jobs, navigate to the school, and get paid for their work through a geofencing solution. They can also receive push notifications and text alerts about new postings.
Featured in Forbes, Blocktrade is a state-of-the-art crypto trading platform prioritizing safety, reliability, and speed.
Simple yet sophisticated, it allows retail users, professional traders, brokers, and institutional money managers to trade with crypto assets and indices in a fully audited, performance-driven, and highly secure way.
Granted the 2018 iF Design Award in the Product category, NOTA NOTA allows you to design, create, and produce your own fragrances.
In addition to the cutting-edge perfume-making machine, the app also offers a social network to share your designs with the world and instantly try out the fragrances designed by others.
Python may have been our first line of business, but JavaScript development services were not far behind, and to this day they remain at the heart of STX Next.
We may be Europe’s Python Powerhouse, but we also have an unbeatable roster of skilled JavaScript developers. Scale up and down at will with our deep pool of JavaScript experts.
In addition to JavaScript programming, we have everything you need for a long-term, end-to-end tech partnership.
Our reputation attracts the best JavaScript developers you can hire. These top-notch specialists are always out for a challenge, ready to give 100% of their coding skills into any project that needs it.
Our teams will work exclusively for you. In the majority of cases, one team sits in one room working on one project, ensuring full focus
We will build your JavaScript project as if it was our own; our reputation depends on it. We are interested in why you want to build your product, not just what it is or how to build it.
C-level executives, product managers, tech leads, and founders from around the world have appreciated our help in delivering world-class products under strict deadlines.
The feedback we get from our clients is consistent. We take real ownership. We happily serve as mentors in tech and Agile. We listen to real business needs instead of just shipping features.
We were able to scale up instantly, adding developers with the specific technical expertise that we needed and then rotating them out when the problem had been solved. At a much smaller firm that would have been very difficult. So far there hasn’t been any challenge that STX Next hasn’t been able to overcome.
It was a pleasure working with the team at STX Next. Collaboration and communication worked like a charm and made our first foray into hiring outside help a big success. The developed tool included technology we were able to extract as a library and made the effort even more worthwhile. Looking forward to our next endeavor.
Working with STX Next felt like a strategic partnership rather than outsourcing. From consultation through to development and delivery, the STX Next team integrated seamlessly within our own team, in a challenging technical area, and delivered to the same standards we expect from our internal developers.
The STX Next team has proven itself to be a solid and reliable partner in software development for the Tiqets platform. Although Tiqets’ main development team is located in the Amsterdam office, having dedicated development teams in Poland gives the company the flexibility it requires in the rapidly growing market that Tiqets operates in.
We came to STX Next looking for a partner to join our developers in putting together a site for Buddhist texts. It's a complex project, involving tens of thousands of texts and relations, and dealing with nearly forty languages. We've been more than happy with the process. The STX Next team has shown initiative and interest, and has been quick to adapt to working with our developers.
We met STX in the beginning of the latest cryptocurrency boom and their contribution was vital to us when managing that extraordinary demand. They quickly adapt to the company and domain, show true ownership by always acting proactively towards solution and deliver high quality work even under stressful conditions. STX is now one of the most essential partners of our business.