Custom Software Development Services

Relevant is a multiskilled custom software development company of 150+ talented software engineers dedicated to creating end-to-end solutions for the world’s leading companies across industries since 2014. Bet on our tech expertise and streamlined processes to develop custom software that fits your needs and goals.

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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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Custom Software development services we provide

Custom Software Development

Standard software does not meet your requirements? We offer you a complete range of custom software development services - from system architecture and UX/UI design to front-end and back-end testing and post-delivery maintenance.

Custom Application Development

You need an app, but you don’t have the time or the skills to develop it yourself? Our industry-specific technology experience enables us to deliver highly scalable and interoperable web, mobile, desktop, and hybrid applications.

IT Technology Consulting

Have a specific business need or a technical challenge? Rely on our specialized experience and knowledge. Our consultants will develop a comprehensive IT strategy for your company's full-scale digital and technological transformation to meet your business goals.

Dedicated Developers

Need to outsource your project or fill the gap of expertise? Relevant can offer you experts who collaborate with your in-house IT department or create a scalable and well-performing team to build a project from scratch. Our custom software development company will become your reliable partner in all tech endeavors.

Other development services we provide:
  • • Full-stack Application Development
  • • Custom UI/UX design and Ideation
  • • MVP & POC Product and Platform Development
  • • Custom Enterprise Application Development
  • • Quality Assurance and Software Testing
  • • Legacy System Modernization and Re-design
  • • Cybersecurity Services
  • • API development and Software Integration
  • • SaaS Application Development
  • • IoT software solutions
  • • DevOps
  • • Cloud Migration

Why Relevant as a custom software development company?


Latest technology stacks

Over 150 experts in our company work across many different technologies and the latest innovative tools. It enables us to meet the toughest challenges.


Agile approach

We believe in agile development methods that allow us to integrate remote teams better, deliver the highest-priority features first, and receive timely feedback.


Dedicated project manager

Our experienced project manager assures clear communication with the developer's team, professional risk management, relevant insights, and proper support.


80% employee retention rate

We cultivate long-term partner relationships, so we endeavor to recruit and retain the best talents who meet our values and objectives.


Rapid time to market

Products that get to market faster value more. We are committed to getting your product out into the market quickly.



High client satisfaction score

We have 200+ completed projects and satisfied customers from 25 countries who have tangible business benefits from partnering with us.

Our clients’ successes

Developing a SaaS platform that assists UK homebuyers
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My Theory Test app by James May
Building #1 driving app in the UK
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Reducing paperwork for construction companies
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Engagement models

Decide which model best suits your project


Why Relevant?
  1. Almost 9 years of presence in the market - our experience will help you find the most suitable solution that fits your processes;
  2. More than 200 completed projects - we use an individual approach to solving the problems of our clients, considering the specifics of the project;
  3. Code in all existing programming languages - we can build a new custom product, understand the current code, and fix errors in outdated code.
  4. Proven track record - we powering the digital acceleration processes in the most digitally-savvy industries, including healthcare, fintech and banking, retail, etc
What size companies do you work with?

We build amazing software for innovative start-ups, fast-growing enterprises, and Fortune 100 companies.

Do we sign an NDA document for my custom project?

Yes, we do. Protecting clients' privacy and their trade secrets is our top priority. As a custom software development company, we always sign an NDA to safeguard your business's private data, project details, and intellectual property.

Who owns code authority?

We guarantee full ownership to our clients. Your project’s intellectual property and source code will be under your 100% authority.

How do I track the progress of my custom project?

We use Jira and Slack to track tasks and project progress in our custom software development and other IT outsourcing services.

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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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