Hannes Duve - Mobile App Developer

Q: Where is Hannes based?

Hannes is based in Bremen, Germany and prefers 100% remote projects.

Q: What languages does Hannes speak?

Hannes speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Hannes have?

Hannes has at least 4 years of experience. During this time, Hannes has worked in at least 2 different roles and for 3 different companies . The average length of individual experience is 1 year and 3 months . Note that Hannes may not have shared all experience and actually has more experience.

Q: What is Hannes's latest experience?

Hannes's most recent position is Mobile App Developer at wikifolio .

Q: What companies has Hannes worked for in recent years?

In recent years, Hannes has worked for wikifolio and Budget For Nomads .

Q: Which industries is Hannes most experienced in?

Hannes is most experienced in industries like Banking and Finance , Information Technology (IT) , and Healthcare .

Q: Which business areas is Hannes most experienced in?

Hannes is most experienced in business areas like Information Technology (IT) , Product Development , and Marketing . Hannes also has some experience in Research and Development (R&D) .

Q: What is Hannes's education?

Hannes holds a Bachelor in Computer Science from University of Freiburg and a Bachelor in Sensory and Cognitive Psychology from Chemnitz University of Technology .

Recommended expert

Bremen, Germany

Experience

Jun 2024 - Jun 2025

1 year 1 month

Bremen, Germany

Mobile App Developer

wikifolio

Development and maintenance of a cross-platform mobile app with React Native (iOS/Android)
Planning and implementing new features as well as optimizing existing functionality
Implementing a native rich text editor (comment feature)
Creating dynamic tables and charts including animations
Integrating deep and native linking (Branch.io)
Setting up and maintaining automated tests with Jest and Maestro
Conducting code reviews to ensure code quality
Working with CI/CD processes and automated release pipelines
Collaborating closely with backend, design, and product teams

Oct 2022 - Jun 2024

1 year 9 months

Freelance Mobile App Developer

Budget For Nomads

Development, testing, release, and marketing of a cross-platform finance app using JavaScript, TypeScript, and React Native in Expo
Interdisciplinary communication with stakeholders
Creative problem solving and independent work
Key app features:
Tracking expenses and splitting budgets
Login, online/offline mode, and live sync
Automatic currency converter
Modern, dynamic, and interactive charts

Dec 2019 - Dec 2020

1 year 1 month

Mobile App Developer

Institute of Music Medicine, Freiburg

Full front-end and back-end development of an app in the Xamarin .Net framework using C#
Implementing the database in SQLite
Working with doctors, physicists, and app designers

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Banking and Finance (2.5 years), Information Technology (1.5 years), and Healthcare (1 year).

Banking and Finance

Information Technology

Healthcare

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (3.5 years), Product Development (3.5 years), Marketing (1.5 years), and Research and Development (1 year).

Information Technology

Product Development

Marketing

Research and Development

Summary

I am a passionate mobile app developer focusing on React Native and TypeScript. In addition to my own finance app Budget For Nomads, I have worked in various teams on implementing complex mobile applications. From scientific data projects to a commercial trading news app for wikifolio.

Through my past projects, I have gained solid experience working with APIs, CI/CD, automated testing, cross-platform development, and agile collaboration. My focus is on building UX-driven front ends. I bring a friendly and motivated atmosphere to the team and have an eye for detail.

Skills

React Native
Javascript
Typescript
Databases (Sql, Sqlite)
Xamarin
.Net
Automated Tests (Jest, Maestro)
Python
Cloud Computing (Aws)
Interdisciplinary Communication
Creative Problem Solving
Teamwork & Independent Work

Languages

German

Native

English

Advanced

Education

Oct 2018 - Sep 2022

University of Freiburg

Bachelor of Science, Computer Science · Computer Science · Freiburg im Breisgau, Germany

Oct 2013 - Sep 2017

Chemnitz University of Technology

Bachelor of Science, Sensory and Cognitive Psychology · Sensory and Cognitive Psychology · Chemnitz, Germany

Profile

Created

September 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Hannes based?

Hannes is based in Bremen, Germany and prefers 100% remote projects.

What languages does Hannes speak?

Hannes speaks the following languages: German (Native), English (Advanced).

How many years of experience does Hannes have?

Hannes has at least 4 years of experience. During this time, Hannes has worked in at least 2 different roles and for 3 different companies. The average length of individual experience is 1 year and 3 months. Note that Hannes may not have shared all experience and actually has more experience.

What roles would Hannes be best suited for?

Based on recent experience, Hannes would be well-suited for roles such as: Mobile App Developer, Freelance Mobile App Developer.

What is Hannes's latest experience?

Hannes's most recent position is Mobile App Developer at wikifolio.

What companies has Hannes worked for in recent years?

In recent years, Hannes has worked for wikifolio and Budget For Nomads.

Which industries is Hannes most experienced in?

Hannes is most experienced in industries like Banking and Finance, Information Technology (IT), and Healthcare.

Which business areas is Hannes most experienced in?

Hannes is most experienced in business areas like Information Technology (IT), Product Development, and Marketing. Hannes also has some experience in Research and Development (R&D).

What is Hannes's education?

Hannes holds a Bachelor in Computer Science from University of Freiburg and a Bachelor in Sensory and Cognitive Psychology from Chemnitz University of Technology.

What is the availability of Hannes?

Hannes is immediately available part-time for suitable projects.

What is the rate of Hannes?

Hannes's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.