Recommended expert
Marius Reimer
Freelance React Native Developer
Experience
May 2023 - Present
2 years 10 monthsGermany
Freelance React Native Developer
German Government / SAP SE
- React Native development and consulting (KulturPass app) using TypeScript, Redux and RTK Query
- Fully open sourced on GitHub
- Project of the Federal Government and SAP to promote culture and youth
Sep 2021 - May 2022
9 monthsGermany
Freelance React Native Developer
Codyo.app / EWE AG
- React Native development and consulting (codyo app) using JavaScript, Redux, react-navigation, Git and AWS
- Responsible for the full app development cycle
- Worked in two-week Scrum sprints
Apr 2021 - Jan 2023
1 year 10 monthsGermany
Freelance React Native Developer
tonies GmbH
- React Native development and consulting (mytonies app) using TypeScript, Java and Swift with a focus on MobX State Tree, GitLab, react-navigation and react-native-reanimated
- Led architectural decisions and development of a new version 2 app
- Worked in Kanban and two-week sprints
Sep 2018 - Dec 2020
2 years 4 monthsHamburg, Germany
Mobile Engineer
Nect GmbH
- Developed iOS and Android apps (React Native) for fully automatic biometric identity verification, the first in the German market
- Developed platform native code in Java, Objective-C, Kotlin and Swift and contributed to several open source projects
- Developed internal and external web tools (React, Preact) and SDKs for Android and iOS
Nov 2017 - Apr 2018
6 monthsPrinceton, United States
Software Engineering Intern
Siemens
- Worked on an international project in industrial automation based on C#, C++ and AngularJS
Feb 2017 - Oct 2017
9 monthsResearch Employee
Ostfalia University
- Developed a collision prevention AI for the Anki SDK using Java
- Supported professor’s work in Java EE
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 Information Technology (7.5 years), Government and Administration (3 years), Utilities (0.5 years), Manufacturing (0.5 years), and Education (0.5 years).
Information Technology
Government and Administration
Utilities
Manufacturing
Education
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 (8 years), Product Development (7 years), and Research and Development (0.5 years).
Information Technology
Product Development
Research and Development
Summary
Software Engineer and expert in React Native as well as experienced in React frontends. Currently developing the KulturPass app for the federal government. Last big project was the development of the mytonies® app. Looking for exciting projects (app, frontend, backend). Quality awareness and reliability are my biggest strengths
Skills
- Typescript, Javascript, Objc, C#, Java, Kotlin, Dart, Rust
- React Native, React, Flutter, Firebase, Android, Ios, Xcode, Unix, Git, Ci/cd
Languages
German
NativeEnglish
AdvancedEducation
Aug 2015 - Dec 2015
University of Wisconsin-Parkside
Master of Science, Computer Science · Computer Science · Kenosha, United States
Sep 2011 - Sep 2017
Ostfalia University
Master of Science, Computer Science · Computer Science · Wolfenbüttel, Germany
Sep 2011 - Sep 2017
Ostfalia University
Bachelor of Science, Computer Science · Computer Science · Wolfenbüttel, Germany
Profile
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Frequently asked questions
Do you have questions? Here you can find further information.
Where is Marius based?
Marius is based in Wiesbaden, Germany.
What languages does Marius speak?
Marius speaks the following languages: German (Native), English (Advanced).
How many years of experience does Marius have?
Marius has at least 8 years of experience. During this time, Marius has worked in at least 4 different roles and for 6 different companies. The average length of individual experience is 1 year and 4 months. Note that Marius may not have shared all experience and actually has more experience.
What roles would Marius be best suited for?
Based on recent experience, Marius would be well-suited for roles such as: Freelance React Native Developer, Mobile Engineer, Software Engineering Intern.
What is Marius's latest experience?
Marius's most recent position is Freelance React Native Developer at German Government / SAP SE.
What companies has Marius worked for in recent years?
In recent years, Marius has worked for German Government / SAP SE, Codyo.app / EWE AG, and tonies GmbH.
Which industries is Marius most experienced in?
Marius is most experienced in industries like Information Technology (IT), Government and Public Administration, and Utility Services. Marius also has some experience in Education and Manufacturing.
Which business areas is Marius most experienced in?
Marius is most experienced in business areas like Information Technology (IT), Product Development, and Research and Development (R&D).
Which industries has Marius worked in recently?
Marius has recently worked in industries like Information Technology (IT), Government and Public Administration, and Utility Services.
Which business areas has Marius worked in recently?
Marius has recently worked in business areas like Information Technology (IT) and Product Development.
What is Marius's education?
Marius holds a Master in Computer Science from University of Wisconsin-Parkside, a Master in Computer Science from Ostfalia University and a Bachelor in Computer Science from Ostfalia University.
What is the availability of Marius?
Marius is immediately available for suitable projects.
What is the rate of Marius?
Marius's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.
How to hire Marius?
To hire Marius, click the Meet button on the profile to request a meeting and discuss your project needs.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
1200
900
600
300
Market avg: 950-1110 €
Market avg: 950-1110 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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