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Vojislava Ilica 14, Belgrade 11000, Serbia
Ph: +381.64.3095.122
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Ph: +381.64.3095.122

Web Application

Full Stack Web Application Developers

Making multiple technologies work together to solve your problems


Web Application Development

In today’s competitive world significance of Web Application is undeniable. It has become crucial for any business to enhance its Web presence universally. Web Applications aid to overcome limited access to desktop based software applications. Cortex renders supreme experience in Web Application development for varied domains. With extensive experience we aspire to provide end-to-end solution to your Web Application development.

There are many varieties, but basically a web application is database-driven software that can be used in a web browser to create a more useful experience on the web. Users can search, filter, sort and maybe enter and save information. A web app may connect to a company’s internal systems or third party services. It may include dynamic reporting, graphing or mapping. Some web apps require a login to get access and some are available only to paid subscribers. We design and develop commercial-grade web applications – reliable, maintainable, scalable and secure.

We're a creative
design agency that
gets excited about.

Consulting & Strategy

We look at the big picture. As your strategic business partner, our chief goal when building custom web software is always to maximize your overall success. Some of our clients come with a well-formed idea of the web software their business needs, while others benefit from consultation about the best approach to achieve their goals. In either case, we take the long view, considering all the angles to make the most of your software investment.

Solution Architecture

Good architecture is the foundation of good software. We take the time to thoroughly understand the real world “user stories” that describe how the web application will be used.  We then apply industry-leading principles of quality software design. The result is web applications that are rock-solid for years, long after others have gone out of date.

User Experience Design

We build software that “just works.” It’s intuitive. User experience design requires extraordinary attention to detail – we work hard so your users don’t have to. Our web applications are known for clean and intuitive user interface design, both useful and visually appealing.

API Integration (3rd Party)

A website that can talk to other websites or services is more powerful. The language that websites speak is their application programming interface or API. Lucky for you, we speak that language also. Whether you need to process payments with Stripe, send email with Postmark, update your customer data with SalesForce, or interact with any of the countless other API’s the web has to offer, we have the expertise to make it happen.

Database Development

A well-designed database is the foundation of a good web app. Done right, it’s a powerful engine. Done wrong, it’s a limiting factor that causes frustration. We have many years of experience designing databases and working with client data. Whether starting from scratch or wrangling existing data, we know what questions to ask so it gets designed right.

Usability Testing

There’s no substitute for sitting real people in front a website and asking them to accomplish specific tasks while we observe and record what they do. We always learn things– sometimes our observations validate the user interface design, and sometimes we learn where improvements are needed. We do usability testing as a service in some of our own projects, and we offer it as a service to other organizations and developers.

SaaS (Software as a Service)

We have developed numerous SaaS applications, including applications that have gone on to become the engine behind highly successful businesses. We understand how to design and build for scalability and security. For startups, we’ve used an Agile software development approach to rapidly develop a Minimum Viable Product (MVP). SaaS solutions are an increasingly profitable model, and we love working on SaaS projects.

Your partners through the digital age

We Develop Solutions That Ignite Your Business.

With our base designs modified for your use, you can get a unique design in a lot less time, instead of developing new designs from scratch and we add customizable customization components to the themes that you can easily swap out as you feel fit. We are strong believers of the develop-once-deploy-anywhere philosophy, which is why we like to make our themes work flawlessly without any issues of deployment targets. We also closely partition our code off from the rest of the system to avoid any conflicts that may arise. These are some of our promises to you for your business website.


What our clients
say about us.

Great partner

“I love our new website. It converts visitors significantly better than the previous one. I worked with many other web design companies and Cortex was most professional.”
Alex Regelman

Co-founder, Colabrio

5 stars for Cortex!

“I have truly enjoyed working with the team at Cortex. They didn’t just provide a service. They worked in tandem with me to make my apps the best they could possibly be. They are awesome!”
Stacey Rickson

Sales Manager, WAM

Design Quality

“I tell you what, there has never been an issue that Filip from the Cortex Design Team hasn't been able to solve for me.”
Laura Morton

Account Manager, Qima

Let’s talk

Got a project?

We’re a team of creatives who are excited about unique ideas and help digital and fin-tech companies to create amazing identity by crafting top-notch UI/UX.

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