Custom Web Development Services

We are a global custom web development company with over 200 successful projects for many recognizable brands from 25 countries. Rely on our professional custom web development services to create high-performing, intuitive, and secure web products that are able to scale as your enterprise grows.

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Client testimonials

«We now have a core team of engineers at Relevant who work for us full-time and are supplemented by 4 or 5 engineers with different skillsets when and if required.»

Paul Carse
CTO and Co-founder of Life Moments

“Working with you guys has been fantastic. The level of expertise of your development team is as good as the people that we get in the UK. You’ve got a fantastic talent base of programmers. It’s more challenging to find people of that quality in the UK.”

Cassian Harrison
Co-founder of Splink Industries and My Theory Test App by James May
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Some of our web development services

Custom Web Development

The off-the-shelf solution does not meet your unique business requirements? We are ready to build custom software with contextual UI/UX for better usability, the right architecture for best performance, and native code to incorporate your complex and unique business logic.

Tech Consulting

Need advice and experience to make the right technical decisions? We will advise you on your web application’s IT architecture, technology stack, and functionality. By using our expertise in creating consumer and business-centric solutions and business intelligence techniques, you have a technology partner on your path to success.

Web Redesign and Modernization

Tired of your old website design? We reconstruct your existing website to improve the visual appeal, functional fullness, and usability. This includes revamping a legacy technology stack, re-architecting to enable greater scalability, and adding new features and innovations.

API Development and Integration

Want to integrate marketing, booking, or geolocation APIs into your app? By appending 3rd party services to your website, we supply a unique solution to solve your business issues. We check the scalability and performance of those services to make sure they fit well within your software.

Other high-quality web development services we provide:
  • • Web Support and Maintenance
  • • Web Portal Development
  • • Fintech Web Development
  • • Progressive Web App Development
  • • HTML5 Web Design & Development
  • • B2B Portal Development
  • • REST API Development
  • • SaaS Development
  • • Enterprise Web Development
  • • Responsive Web Design
  • • WordPress Support
  • • eCommerce Development
  • • CMS Development

Our tech stack

React.js and React Native
Google Cloud


Google Cloud
Microsoft Azure
IBM cloud

Why should you choose Relevant?


Expertise in innovations

We continually improve our knowledge, staying up-to-date with new features, innovations, and security issues.


Dedicated developers

We offer dedicated developers to scale your team, bridge the skills gap, and meet a sudden demand spike.


Agile and personalized approach

We adopt rapid product iterations and ensure a productive workflow following the Agile methodology.


Result-focused partnership

With our web development company, you can get the best return on your investment.


Cooperation transparency

We value our customers’ trust and focus on long-term and transparent cooperation.


9 years of rich experience

Our professionals develop projects of almost any complexity without compromising quality standards.

View our expertise in action

Reducing paperwork for construction companies
View case
Building a platform for the UK's leading sports medicine service provider
View case
Developing a SaaS platform that assists UK homebuyers
View case

Engagement models

Decide which model best suits your project


Why outsource web development services to Relevant?

During 9 years of our presents in the market, we opened 2 offices - in Poland and Ukraine, but hire and work with engineers worldwide.

Our talent pool includes 150+ software engineers with 5+ years of industry experience. Currently, our professional website design and development company has delivered over 200 web development projects for startups, mid-sized, and enterprise-level companies.

What types of web applications are you developing?

As a top web app development company, we specialize in the following aspects of web application development services:

  • Static Web Applications
  • Dynamic Web Applications
  • Shopping or eCommerce Apps
  • Web Application using JavaScript
  • Single Page Application
  • Portal Web Applications
  • Web Applications with CMS
  • Animated Web Application
  • Rich Internet Applications (RIA)
  • Progressive Web Application (PWA)
  • Multi-Page Applications (MPA)
What technologies do you use to develop web applications?

We use a wide range of advanced technologies to create the most profitable web solutions for you and your customers:

  • Web front-end - HTML, Angular, ReactJS, JavaScript, VueJS, etc.
  • Back-end developing - Node.js, Golang, Python, PHP, etc.
  • eСommerce and CMS projects - WordPress, Drupal, Magento, etc.
  • Database: MySQL, PostgreSQL, Cassandra, MongoDB, Oracle, etc.
  • Cloud and DevOps: Google Cloud, AWS, Docker, Kubernetes, Jenkins, Azure, etc.
How much does it cost to create a web application?

The cost is never fixed when it comes to custom software application development. It is dependent on many contributing factors such as:

  • App development platform
  • App category
  • Complexity of app
  • Technology stack
  • Project requirements and timeline
  • Resources needed and their location
How can I find a reliable company with sufficient experience?

You can find a partner for your web solution by looking at ranking sites like Clutch. They offer a review-based rating system and short profiling so you can quickly find a top web development company.

Foremost, professional web development services should be backed by years of experience (look for companies with expertise in web development for at least 9 years) and knowledge of the wide range of technologies required to create a reliable and durable solution.

When choosing a web development agency, find out which companies they have worked with and study their case studies. A detailed review of your potential partner's website is a great way to evaluate what they can do for you.

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Do you know that we helped 200+ companies build web/mobile apps and scale dev teams?

Let's talk about your engineering needs.

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