Hi, I'm Leo

Mobile developer

Experienced in developing Android and Flutter apps.

Contact me
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About Me

My introduction

I'm a freelance mobile developer, focused on creating Android and Flutter apps.

4+ Years of
experience
6+ Completed
projects
3+ Companies
worked for
Download CV

Skills

My technical level

Android developer

More than 4 years

Kotlin

80%

Jetpack Compose

80%

Room

70%

Gradle

60%

Flutter developer

More than 2 years

Dart

70%

Widgets

70%

Riverpod

60%

Isar Database

60%

Backend developer

More than 3 years

Firebase

80%

Google Cloud Platform

60%

MongoDB Atlas

60%

Ktor

60%

Qualification

My personal journey
Education
Work

Media Informatics

University of Applied Sciences - Düsseldorf
2019 - 2023

IT Specialist

Technical College - Moers
2015 - 2018

Android Developer

NanoGiants GmbH - Düsseldorf
2022 - 2023

Android Developer

University of Applied Sciences - Düsseldorf
2020 - 2022

IT-Specialist

Fujifilm Recording Media GmbH - Kleve
2015 - 2018

Services

What I offer

Android
Development

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Android Development

  • Native App Development

  • Basic UI/UX Development

  • Connect external APIs

  • Write Unit and Integration Tests

Flutter
Development

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Flutter Development

  • Cross Platform App Development

  • Basic UI/UX Development

  • Connect external APIs

  • Write Unit and Integration Tests

Backend
Development

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Backend Development

  • BaaS Configuration

  • CI/CD Automation

  • Performance Monitoring

  • Custom Backend Solutions

Portfolio

Most recent work

Social Lottery App

As a freelancer I worked on the Android App of the German Social Lottery "Aktion Mensch", in particular on a new login feature.

Demo

IoT Sensor Data Visualization

In the course of a research project, I developed an Android App that fetches sensor data from TheThingsNetwork and displays it in various graphs.

Coming soon...

More projects will be available shortly.

You have a project in mind?

Contact me now for a free first call.

Contact me

Testimonial

What my clients say about me

NanoGiants GmbH

About my work as an Android developer

Mr. Nobis has an extremely comprehensive and very well-founded specialist knowledge, which he was able to put into practice excellently at all times.

Fujifilm Recording Media

About my work as an IT-specialist

Thanks to his good and quick comprehension skills, Mr. Nobis quickly acquired a comprehensive overview of the operational processes in the various divisions.

NanoGiants GmbH

About my work as an Android developer

Due to his particularly strong conceptual, creative and logical thinking, Mr. Nobis always found excellent solutions for all problems that arose.

Contact me

Get in touch

Call Me

+49 176 45914738

Email

contact@leonobis.com

Location

Düsseldorf, Germany
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