WEB APP DEVELOPMENT

We build custom web applications from scratch and extend or modernize existing ones. The goal is always the same: software that works, scales, and keeps working.

Talk to a specialist →

What we can do for you

Build a web app from scratch

You have an idea, a brief, or a detailed spec. We take it through architecture, AI-driven development, QA, and deployment, and hand you a production-ready web app you can launch with confidence. We work across frontend, backend, APIs, and cloud infrastructure.

Upgrade or modernize an existing system

If your web product is slowing development down, can’t handle the load, or is built on a foundation that’s starting to crack, we come in, get under the hood, and fix it properly. No unnecessary rewrites. No shortcuts that create tomorrow’s problems.

Extend your web development team

We have proven frontend, backend, and full-stack experts. If you need a whole development team or engineers to fill in the gaps, we can do that.

Lacking the right web development talent? Our experts will help you out — Let’s talk about your project →

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THE TECH WE USE

Backend

Spring Boot & Quarkus

Node.js

Java

Python

Ruby on Rails

NestJS

Go

PHP

Frontend

React

Angular

Vue.js

Infrastructure

AWS

Kubernetes

Terraform

Tooling

GitHub / GitLab

Docker

Postman

Swagger / OpenAPI

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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Built an all-in-one business platform for a $50M-funded AI startup →

We partnered with an Australian AI startup to build a unified business platform, where we expanded their engineering capacity and delivered key AI features using Ruby on Rails, React, and major AI integrations.

Industry

AI Software

Location

Australia

Co. type

Post-IPO

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Modernized processes and saved $100M+ for a class I railroad →

We built a capacity-planning platform that processes 400,000+ daily reservations, gives real-time visibility, and cuts manual work and operational costs for a major US rail operator.

Industry

Railroad

Location

US

Co. type

Enterprise

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 →

Why us

There are many reasons we consistently provide clients with quality mobile apps.


1 team, 1 project

Your team works exclusively on your product. No context switching, no divided attention. They learn your codebase deeply and stay with it from kickoff to delivery.

Product-minded engineering

We don’t just build the spec. Our engineers think about your users, your goals, and your business. We also speak up when something doesn’t serve the product.

Senior-led teams

At least 3 senior engineers in every 7-person team. The decisions that shape your product are made by people who’ve solved these problems before — with 5 years of experience on average.

Our collaboration models

Team-based

Access to a pool of seasoned experts.

Project-based

Building products regardless of scale.


End-to-end projects

Proof of concept

Pilot projects

NEXT STEPS

Before we start our partnership, we have to make sure
we’re a right fit for you.

Over a relaxed call or two, we’d like to hear as much as possible about your project
(fully NDA’d of course).

We’ll talk about:

  • Your expectations
  • Services you need
  • Your vision

There are a few steps in this phase:

  • We’ll hand-pick a team based on your desired seniority level and other requirements.
  • We’ll send you their CVs so you’ll know every engineer working for you.
  • If necessary, we can set up interviews between you and every engineer.

Only when you’re 100% on board with our choice, we’ll go to the next phase.

If everything sounds good to you, we’re ready to get started.

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 Client Strategy Specialist. Either way, we’ll be back in touch as soon as we can to arrange an informal call.

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or
Ivor Cindric

Arrange a chat with Ivor, our client strategy specialist.