FRATCH

Recommended expert

Offenbach am Main, Germany

Experience

Jun 2022 - Present

3 years 10 months

ParkProReakt

Justus Liebig University Giessen

proactive instead of reactive symptom detection in Parkinson patients
iOS development
FHIR integration
database structure

Mar 2022 - Present

4 years 1 month

Freelancer

building software architectures
concept and planning in healthcare
development of user interfaces
iOS and Android app development
PLC development
automation technology

Jan 2019 - Jun 2022

3 years 6 months

Full-stack developer

CT-Coating AG

responsible for the complete software architecture
smart home applications
native mobile application development
IoT with Raspberry Pi and Arduino
Node-Red, BLE, NFC, Flutter, Swift, Kotlin, MVVM

Aug 2017 - Nov 2018

1 year 4 months

App developer for the Gelbe Seiten iOS app

Gelbe Seiten GmbH

iOS team member
refactoring from Objective-C to the latest Swift version
integrating push notifications and various other services
MVC, Scrum, Core Data, RxSwift, Zeplin, Jira

Jun 2015 - Present

10 years 10 months

Lecturer in iOS programming with Swift

University of Applied Sciences Mittelhessen

lecturing in app development
transition from Objective-C to Swift
update support for new iOS versions
integrating external code modules (C/C++/Objective-C)
Apple Developer Portal management
example REST backend with database
databases in iOS

Jun 2015 - Mar 2017

1 year 10 months

Research Assistant in Medical Informatics

Technische Hochschule Mittelhessen

Working on existing medical projects
Acquisition and processing of biosignals
Deepening expertise in audio recording with Apple devices
iOS app development
E-Health
Analysis and further development of medical projects

Apr 2015 - May 2015

2 months

Software Development and Web Programming

Kassensuche GmbH

PHP, CSS, HTML and JavaScript
Backend development
MySQL database integration

Jan 2015 - Apr 2015

4 months

iOS App Developer

Invensity GmbH

Objective-C, PHP and MySQL
Backend and frontend development
In-house Quiz Duel and Chat App
Client-server architecture with PHP

iOS Expert for the AOK App

AOK System GmbH

Environment: Xcode
Programming languages: Swift and SwiftUI
iOS app development
Coordination with in-house backend developers
Continuous integration with Jenkins
Documentation and execution of test cases
Unit tests

Full Stack Developer

Electric Stroller Project

Elkiwa

Programming language: C
Microcontroller programming on Arduino board
Controlling electric motors with pressure sensors
Implementing LED controls
Applying control engineering
Software lead for the press presentation

Asuro Robot / Microcontroller Project

Fachhochschule Frankfurt

Hardware: Soldered actuators and sensors onto the main board
6 actuators and 2 light sensors
Programming language: C
Line following with sensors and object avoidance using the actuators
Output on a 7-segment display
Tool: Keil uVision4 and Notepad

Chancen bilden FH Mentor Project

Fachhochschule Frankfurt

Deep insights into social pedagogy for working with students
Collaboration with fellow students from different study fields
Providing motivation and information for various degree programs
Addressing student problems
Tutoring in databases and mathematics
Responsibility and teamwork skills

iOS App Project

Invensity GmbH

Environment: Xcode
Programming language: Objective-C
Core Data framework and databases (MySQL)
JSON and server communication via PHP
Creating and using push notifications

Full Stack Developer

Nanoris GmbH

Environment: Android Studio and Visual Code
Programming language: Python, C and C++
Full Stack development
Microcontroller programming
Connecting hardware and software
Databases: Postgres

B2B travel booking app developer

Travel Agency ATR

Environment: Xcode, Android Studio and Visual Code
Programming languages: Swift and Dart
iOS and Android app development with the Flutter framework
Native app development for push notifications
Google Firebase push notifications
Coordination with in-house backend developers
Documentation and execution of test cases
Manual testing (cross-device, cross-platform)

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 Education (11 years), Information Technology (7.5 years), Healthcare (6 years), Manufacturing (4 years), and Media and Entertainment (1.5 years).

Education

Information Technology

Healthcare

Manufacturing

Media and Entertainment

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 (11 years), Research and Development (5.5 years), and Product Development (5.5 years).

Information Technology

Research and Development

Product Development

Summary

since 2010: software development/conception
since 2014: app development with Swift/Objective-C (iOS)
since 2020: app development with Kotlin/Jetpack Compose (Android), Flutter and React Native

Skills

Programming Languages

Swift
Objective-c
Python
Javascript
C

Operating Systems

Linux
Mac Os
Ms Windows
Ubuntu

Databases/servers

Mysql
Nosql
Oracle

Ides

Xcode
Visual Studio Code
Intellij
Android Studio

Software

Ms Office
Openoffice

Ios Frameworks

Watchkit
Coredata
Avfoundation
Healthkit
Swiftui
Core

Methods/processes

V-model
Agile / Scrum
Prototyping

Tools

Http
Rest-apis
Json
Apache Tomcat
Zeplin
Realm
Docker
Jquery
Bootstrap
Js
Jenkins Ci
Google Firebase
Amazon Web Services
Wordpress
Postman
Sf Symbols
Jira
Gulp (Tool)
(And Various Smaller Ones)

Languages

German

Native

Education

Jan 2021 - Present

Doctoral Center for Engineering Sciences (PZI) at the Central Hesse Research Campus

PhD candidate, development and validation of an e-health solution for analyzing acoustic symptoms according to regulatory · Engineering sciences · Germany

Master of Science, Medical Informatics · Medical informatics · 1,2

Bachelor of Science, Computer engineering · Computer engineering · 2,5

Certifications & licenses

Clean Code

Gelbe Seiten GmbH

Presentation Skills and Quality Management

Invensity GmbH

Creating opportunities - fit for university mentor certification

FH Frankfurt

Profile

Created

November 2025

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Frequently asked questions

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

Where is Mohammad based?

Mohammad is based in Offenbach am Main, Germany.

What languages does Mohammad speak?

Mohammad speaks the following languages: German (Native).

How many years of experience does Mohammad have?

Mohammad has at least 11 years of experience. During this time, Mohammad has worked in at least 8 different roles and for 8 different companies. The average length of individual experience is 1 year and 5 months. Note that Mohammad may not have shared all experience and actually has more experience.

What roles would Mohammad be best suited for?

Based on recent experience, Mohammad would be well-suited for roles such as: ParkProReakt, Freelancer, Full-stack developer.

What is Mohammad's latest experience?

Mohammad's most recent position is ParkProReakt at Justus Liebig University Giessen.

What companies has Mohammad worked for in recent years?

In recent years, Mohammad has worked for Justus Liebig University Giessen, Freelancer, CT-Coating AG, and University of Applied Sciences Mittelhessen.

Which industries is Mohammad most experienced in?

Mohammad is most experienced in industries like Education, Information Technology (IT), and Healthcare. Mohammad also has some experience in Manufacturing, Media and Entertainment and Publishing.

Which business areas is Mohammad most experienced in?

Mohammad is most experienced in business areas like Information Technology (IT), Product Development, and Research and Development (R&D).

Which industries has Mohammad worked in recently?

Mohammad has recently worked in industries like Education, Information Technology (IT), and Healthcare.

Which business areas has Mohammad worked in recently?

Mohammad has recently worked in business areas like Information Technology (IT), Product Development, and Research and Development (R&D).

What is Mohammad's education?

Mohammad holds a Doctorate in Engineering sciences from Doctoral Center for Engineering Sciences (PZI) at the Central Hesse Research Campus, a Master in Medical informatics and a Bachelor in Computer engineering.

Does Mohammad have any certificates?

Mohammad has 3 certificates. These include: Clean Code, Presentation Skills and Quality Management, and Creating opportunities - fit for university mentor certification.

What is the availability of Mohammad?

Mohammad is immediately available for suitable projects.

What is the rate of Mohammad?

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