About

A mobile developer who loves knowing how things work.

I’m Andrea Colombo and I’ve been designing and building mobile apps for over 7 years. I love working on products people actually use, where every release has to be solid and every feature has to make sense for its users.

I’ve built apps for companies like Idealista, Gruppo San Donato, ABB, and Bucher, working both within structured product teams and directly with clients. Today I’m a Mobile Developer at Teoresi Group S.p.A., where I work on consulting and development for various companies.

I mainly work with React Native and Kotlin Multiplatform, with a background in Xamarin.Forms and backend development with Node.js and ASP.NET. Outside of code, I have a strong passion for electronics, microcontrollers such as Arduino and Raspberry Pi, and mechanics.

Background

Where I’ve worked.

See the case studies

  1. 2025 – present

    Expert Engineer

    Teoresi S.p.A., Milan

    Development and consulting on mobile and backend projects for various companies.

    React NativeNode.jsKotlin MultiplatformPHPAzureiOSAndroid

  2. 2023 – 2025

    Mobile Developer

    Idealista S.p.A., Milan

    New core features and continuous releases for the Casa.it app, alongside product and design teams.

    React NativeiOSAndroid

  3. 2021 – 2022

    Software Developer

    Notomia, Milan

    Custom mobile apps for several clients, from the first conversation all the way to the backend.

    React NativeNode.jsExpress.js

  4. 2016 – 2018

    Software Developer

    Silicon Make App, Milan

    Cross-platform apps with dedicated backends and databases.

    Xamarin.FormsASP.NETMySQL

Skills

Technologies and capabilities.

Mobile

  • React Native
  • Kotlin Multiplatform
  • Kotlin
  • JavaScript
  • Xamarin.Forms
  • C#
  • iOS
  • Android

Backend and data

  • Node.js
  • Express.js
  • ASP.NET
  • REST API
  • MySQL

Teamwork

  • Product & design collaboration
  • Continuous releases
  • Direct client relationship
  • Maintaining live apps

Electronics and making

  • Arduino
  • Raspberry Pi
  • Microcontrollers
  • Mechanics

How I work

Principles that guide every project.

Clear and constant communication throughout the whole project.

Focus on deadlines, priorities, and realistic planning from the start.

Readable, maintainable code built to evolve with the product.

A strong focus on the real value for users, teams, and business goals.

Let’s work together

Have an idea to grow? I can help you turn it into an app.

Say hello