Web APP development

We build complex projects from the ground up, with a proven track record of delivering successful web-based software products, alongside entire web infrastructures for mobile applications.

Tell us more about your project

What we do



We favor React for front-end development. It’s very fast for developing, has great performance and offers a wide range of reusable components.


Angular is another we’re very familiar with, and a particularly good choice if you’re aiming to build a Software as a Service (SaaS) product.



A robust back-end foundation, designed around your business goals, is vital. Our go-to framework is either Flask or Django in Python, with the former offering more flexibility, while the latter speeds up development so you can ship quicker.


Another option is NodeJS. Increasingly popular, with a great active community for open-source frameworks, and it plays nicely with ReactNative, meaning an entire codebase in javascript.

web development

Why it works so well

A reliable and scalable team

We deliver what we promise. The team can scale when needed so you can get to market
quickly, while ensuring your product meets customer demand.

Focused on security

Avoiding security issues upfront can save development time and ensures a better product. Don’t just rely on external security scans – choose a team that takes it seriously.

Pixel-perfect design implementation

Our front-end engineers are obsessive about matching final approved designs to the pixel. We always work mobile-first for both web and apps, making sure performance is a top priority.

Front-end and back-end specialists

It’s important for these two teams to be distinct so they can choose the right tools for their specialism and develop tailored best practice. Always collaborating with continuous communication.

Continuous Integration & Deployment

We store our code on Bitbucket and use their pipelines to trigger our code quality checks and run tests.

Focus on testing

The most successful teams are those who truly understand the importance of quality assurance (QA), so ours are tightly integrated with the QA team, collaborating daily.


We aim to run all our infrastructure in the cloud, maximizing automation by taking advantage of Amazon Web Services and Heroku.

Infrastructure as code

We use Terraform so we can quickly and predictably create new environments and change existing ones, making projects more robust, reducing human error.

Our Work

We’ve loved working with many fantastic companies, and are really proud of what we’ve achieved together.

Explore our projects →

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Fix bugs and crashes faster than ever

View case study →

case study contacts 411


Business contact management app

View case study →

I am continually impressed by the level of pride and ownership that DECODE takes in the work they perform for us. They treat our products as if they are their own, which translates into better user experiences for our customers.
Kenneth Huebsch
Software Engineering Manager at Qrypt →


Choosing the right software agency to make your web app can be difficult. Here’s why we’d be the perfect fit for you.

Fully focused on your project

If a team is assigned to you, rest assured that it’s the only product they’re working on.

Extreme transparency

You’ll have complete communication access to every team member working on your project.

Rigorous QA

Every line of code, every feature, every part of your product will go through our rigorous QA methods. That way, you’ll have a product your users can actually rely on.


Engineering isn’t only about engineering. It’s about your product, your business, your success. We know that. That’s why our multi-disciplinary teams will look at all angles of your product, not just the coding part.

This could be the start of a great partnership

Want to get in touch? Just fill in the short form below, or skip to the bottom to arrange a chat direct with our Head of Partnerships. Either way, we’ll be back in touch as soon as we can to arrange an informal call.

Don’t worry, any information you give us will only be stored for business purposes. Find out more in our Privacy Policy.

Marin Luetic contact us

Arrange a chat with Marin, our Head of Partnerships.

Still unsure about something?

Don’t worry, whatever it is, we’ve got you covered in our FAQ.

Get to know DECODE


Let’s introduce ourselves

Find out more about who we are and why we love what we do.

About us →


Our modus operandi

Work with us and you get a highly skilled team devoted to you and your product.

How we work →

Trusted by great companies
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In the spotlight
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  • Proud to announce we successfully achieved ISO/IEC 27001 certification!

    The threat to cyber security is ever-growing. That’s why it’s important to follow standardized and rigorous security procedures.