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Web App Development

Back-end & Front-end development that get investors lined up

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Back-end development

perfectly aligned with your tech and business needs

We decided not to keep our backend abilities in the back. We know your app’s health is depending on it, that’s why you can depend on us.

  • Ruby, Ruby on Rails, Node.js
  • Incessant quality with >90% code covered with tests
  • No returning bugs
  • No technical debt
  • Documentation on point

Front-end Development

Exactly what meets the eye. Coded to the pixel.

Leave your web development to us and let us transform your business with a fully responsive web app.

  • React, Typescript, Jest.js, Storybook
  • Automated tests & Fast Prototyping
  • Pixel-perfect & SEO-friendly implementation
  • Continuous Integration & Deployment
  • Progressive Web Apps

Progressive Web Apps

A fully-functional mobile experience

When you already have a web app, a PWA is the fastest way to get into your users’ mobile screens. PWAs can be equipped with many features commonly associated with native apps: push notifications, geolocation, camera, accelerometer.

  • Easy to implement from a web app
  • An app-like experience
  • Cross-platform by definition

We're here to help you to

Build an MVP

Build an MVP

We will build an MVP with you and help you to get on the market quickly and efficiently

Create APIs

Create APIs

No cutting corners; a solid API development to fuel your product

Scale Your App

Scale Your App

We will develop further your legacy code to achieve your new business goals

Technologies we use

  • Ruby
  • Rails
  • Hanami
  • Elixir
  • Sinatra
  • Phoenix Framework
  • JS
  • React
  • Ember
  • AngularJS
  • iOS
  • Swift
  • Objective C
  • Cocoa Touch
  • Android
  • Kotlin
  • Java
  • Redis
  • PostgreSQL
  • Elasticsearch
  • AWS
  • Node.js

Maybe it's the beginning of beautiful cooperation?

With over 300 successful project launches, we’ve got the experience to deliver the results you want.

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Some of Our Happy Clients

  • Andreas Gallefoss Andreas Gallefoss Product Manager at Varner case study EL Passion enabled us to achieve our business goals with their solution. Thanks to the AI based engine they developed together with the Norwegian data science consultancy deepinsight, we managed to grew our sale on old products with more than 16% (>4.5M EUR) during one seasonal sale alone. The solution will continue to have a huge impact on Varner’s long term margins. They are knowledgeable experts willing to take ownership of the project, and they delivered a quality solution ready for implementation.
  • Andrzej Wróbel Andrzej Wróbel CFO at Mednavi case study They are creative when approaching challenges, and the results they deliver are impressive in terms of quality and time. EL Passion helped us with design and development, but they also gave our product vision a clear shape and form during a Product Design Workshop.
  • JULIE LEPIQUE JULIE LEPIQUE CEO at femtasy case study I recommend EL Passion because of their agile way of working and focus on achieving top-notch quality of the product. Communication in the project was clear and effective. EL Passion professionals could adapt easily to fast-paced changes in the idea behind the product and deliver reliable and ready-to-use solutions.
  • Stefano Sanchini Stefano Sanchini Founder & CEO of 4URSPACE EL Passion felt like an extension of our team, they dived deep into our business to understand our goals. They were perfect when it comes to communication and delivery. The process was smooth and the design and app improvements we received were outstanding.
  • Nikolai Fasting Nikolai Fasting CTO at Pioner Labs case study We have entrusted EL Passion with building one of the most business critical components in our latest massive e-commerce projects developed with Varner. And I’m happy to say that it proved to be the right choice; smooth communication, professional team management and good engineering helped making the solution rock solid and enterprise grade. We will definitely work more together in the future.
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  • Varner
  • Polaroid
  • EY
  • Booksy
  • Docplanner.com