Senior Frontend Engineer. Cross-Plattform App-Entwicklung und Design. React ? React Native ? Expo
Aktualisiert am 08.01.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 08.01.2026
Verfügbar zu: 100%
davon vor Ort: 40%
React
TypeScript
Front-End
GUI-Entwicklung
Webentwicklung
Responsive Webdesign
Plattformunabhängigkeit
App-Entwicklung
Webapplication
Web Application
Mobile Apps
GUI
CSS
HTML
HTML5
CSS3
NoSQL
PostgreSQL
German
native
Turkish
native
English
fluent

Einsatzorte

Einsatzorte

Munich (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

6 Jahre 5 Monate
2019-08 - heute

Consulting, design, development and deployment of mobile and web applications

Freelance Software Engineer
Freelance Software Engineer

small and medium sized companies
1 Jahr 2 Monate
2024-10 - 2025-11

Clypp Mobile App

Redesign and technical implementation of the Clypp mobile app as an Expo project using a modern technology stack. Responsible for selecting and integrating all necessary libraries and the application architecture.
  • Noteworthy features implemented:
    • Creation and uploading of video tutorials directly in the app
    • AI-supported translation of content into multiple languages
    • Full offline functionality including all translations, assets, and attachments
    • Management and editing of various attachment formats
    • Integrated training system for training courses and certifications
  • Collaboration:
    • Close collaboration with designers and developers. 
    • Regular discussion of design and implementation proposals until final implementation.
    • Focus was on a clean code base, user-friendly operation, and reliable performance.
Zesavi GmbH
3 Monate
2025-08 - 2025-10

Venta AI

TypeScript React Remix
  • Optimization of Venta AI Web Software Email Outreach Feature. Fixed redundancies and code smell, outreach feature runs now faster and more reliable.
  • Added custom textblocks to markdown editor, which parses and displays bracket keywords differently.
TypeScript React Remix
april.eleven GmbH
4 Jahre 1 Monat
2019-11 - 2023-11

Design, development and deployment of mobile applications

Lead Frontend Engineer
Lead Frontend Engineer
  • Design, development and deployment of mobile applications, build with React-Native (cross platform Android and iOS), Single Page App with React and Firebase as well as Serverless Cloud Functions, in a medical regulated field. 
  • Migrated Firebase to GraphQL with NestJS Backend on Kubernetes.
  • Setup complete continuous build pipeline for both Android and iOS apps with e2e test integration with Gitlab-CI on local MacOS and Ubuntu hardware as well as containerized runners with docker.
  • Documentation of development practices and release process in a regulated field.
  • Team leadership, mentoring and knowledge sharing.
Smokeless.world
5 Jahre 10 Monate
2014-03 - 2019-12

Design, development and deployment of hybrid mobile applications

Web- / App-Developer
Web- / App-Developer
  • Development
    • Design, development and deployment of hybrid mobile applications and single page applications in the field of Industry 4.0, with the help of unit and e2e tests, pair programming, code reviews and Scrum.
  • Operations
    • Set up production and test environment in the cloud, development tools and continuous delivery pipeline.
GROB-WERKE Mindelheim
2 Monate
2019-08 - 2019-09

Workshop Moderner Stack

VueJS Laravel MongoDB
  • Workshop on creating a modern web interface for calculating various insurance-related figures. Modern technologies presented: VueJS, Laravel, MongoDB
  • Development of the technical concept together with the onsite development team, functional concept, prototyping, UX design
VueJS Laravel MongoDB
AON Deutschland
4 Monate
2019-05 - 2019-08

Design, development and deployment of a Single Page

Lead Frontend Engineer React Redux Ant-Design
Lead Frontend Engineer
React Redux Ant-Design
emax-digital
2 Jahre 4 Monate
2016-09 - 2018-12

Optimization of workflow processes

Scrum Master
Scrum Master
  • Introduction and education of the department in Scrum
  • Optimization of workflow processes
  • Team leadership as a servant leader & agile coach
  • Introduction and maintenance of JIRA and Confluence as an administrator
GROB-WERKE Mindelheim

Aus- und Weiterbildung

Aus- und Weiterbildung

4 Jahre 1 Monat
2010-03 - 2014-03

Industrial electronics, dual studies

B. Eng., Hochschule Ulm
B. Eng.
Hochschule Ulm

Thesis on request

2 Jahre 7 Monate
2009-09 - 2012-03

utomation technology

Electronics technician, GROB-WERKE Mindelheim
Electronics technician
GROB-WERKE Mindelheim
Part of the dual study Industrial Electronics
8 Jahre 7 Monate
2000-09 - 2009-03

School Education

General University Entrance Qualification, Maristenkolleg Mindelheim
General University Entrance Qualification
Maristenkolleg Mindelheim

Position

Position

  • Senior Software Engineer
  • UI & UX Designer
  • Scrum Master
  • DevOps

Kompetenzen

Kompetenzen

Top-Skills

React TypeScript Front-End GUI-Entwicklung Webentwicklung Responsive Webdesign Plattformunabhängigkeit App-Entwicklung Webapplication Web Application Mobile Apps GUI CSS HTML HTML5 CSS3 NoSQL PostgreSQL

Produkte / Standards / Erfahrungen / Methoden

Profile

Designing and developing interactive user experiences is my passion.


Skills

  • JavaScript, TypeScript
  • HTML, (S)CSS, Node.js
  • React(-Native), Expo
  • Next.js, RemixRedux,
  • Zustand
  • Node.JS, Firebase,
  • GraphQL, Serverless
  • Jest, Detox
  • FP, OOP, Python
  • MySQL, Postgres
  • NPM, Git, Ramda
  • GitHub, Gitlab-CI
  • Bash, VSCode, NeoVim
  • Ubuntu, MacOS, Docker
  • Leadership, Ownership
  • Mentoring, Team building

Einsatzorte

Einsatzorte

Munich (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

6 Jahre 5 Monate
2019-08 - heute

Consulting, design, development and deployment of mobile and web applications

Freelance Software Engineer
Freelance Software Engineer

small and medium sized companies
1 Jahr 2 Monate
2024-10 - 2025-11

Clypp Mobile App

Redesign and technical implementation of the Clypp mobile app as an Expo project using a modern technology stack. Responsible for selecting and integrating all necessary libraries and the application architecture.
  • Noteworthy features implemented:
    • Creation and uploading of video tutorials directly in the app
    • AI-supported translation of content into multiple languages
    • Full offline functionality including all translations, assets, and attachments
    • Management and editing of various attachment formats
    • Integrated training system for training courses and certifications
  • Collaboration:
    • Close collaboration with designers and developers. 
    • Regular discussion of design and implementation proposals until final implementation.
    • Focus was on a clean code base, user-friendly operation, and reliable performance.
Zesavi GmbH
3 Monate
2025-08 - 2025-10

Venta AI

TypeScript React Remix
  • Optimization of Venta AI Web Software Email Outreach Feature. Fixed redundancies and code smell, outreach feature runs now faster and more reliable.
  • Added custom textblocks to markdown editor, which parses and displays bracket keywords differently.
TypeScript React Remix
april.eleven GmbH
4 Jahre 1 Monat
2019-11 - 2023-11

Design, development and deployment of mobile applications

Lead Frontend Engineer
Lead Frontend Engineer
  • Design, development and deployment of mobile applications, build with React-Native (cross platform Android and iOS), Single Page App with React and Firebase as well as Serverless Cloud Functions, in a medical regulated field. 
  • Migrated Firebase to GraphQL with NestJS Backend on Kubernetes.
  • Setup complete continuous build pipeline for both Android and iOS apps with e2e test integration with Gitlab-CI on local MacOS and Ubuntu hardware as well as containerized runners with docker.
  • Documentation of development practices and release process in a regulated field.
  • Team leadership, mentoring and knowledge sharing.
Smokeless.world
5 Jahre 10 Monate
2014-03 - 2019-12

Design, development and deployment of hybrid mobile applications

Web- / App-Developer
Web- / App-Developer
  • Development
    • Design, development and deployment of hybrid mobile applications and single page applications in the field of Industry 4.0, with the help of unit and e2e tests, pair programming, code reviews and Scrum.
  • Operations
    • Set up production and test environment in the cloud, development tools and continuous delivery pipeline.
GROB-WERKE Mindelheim
2 Monate
2019-08 - 2019-09

Workshop Moderner Stack

VueJS Laravel MongoDB
  • Workshop on creating a modern web interface for calculating various insurance-related figures. Modern technologies presented: VueJS, Laravel, MongoDB
  • Development of the technical concept together with the onsite development team, functional concept, prototyping, UX design
VueJS Laravel MongoDB
AON Deutschland
4 Monate
2019-05 - 2019-08

Design, development and deployment of a Single Page

Lead Frontend Engineer React Redux Ant-Design
Lead Frontend Engineer
React Redux Ant-Design
emax-digital
2 Jahre 4 Monate
2016-09 - 2018-12

Optimization of workflow processes

Scrum Master
Scrum Master
  • Introduction and education of the department in Scrum
  • Optimization of workflow processes
  • Team leadership as a servant leader & agile coach
  • Introduction and maintenance of JIRA and Confluence as an administrator
GROB-WERKE Mindelheim

Aus- und Weiterbildung

Aus- und Weiterbildung

4 Jahre 1 Monat
2010-03 - 2014-03

Industrial electronics, dual studies

B. Eng., Hochschule Ulm
B. Eng.
Hochschule Ulm

Thesis on request

2 Jahre 7 Monate
2009-09 - 2012-03

utomation technology

Electronics technician, GROB-WERKE Mindelheim
Electronics technician
GROB-WERKE Mindelheim
Part of the dual study Industrial Electronics
8 Jahre 7 Monate
2000-09 - 2009-03

School Education

General University Entrance Qualification, Maristenkolleg Mindelheim
General University Entrance Qualification
Maristenkolleg Mindelheim

Position

Position

  • Senior Software Engineer
  • UI & UX Designer
  • Scrum Master
  • DevOps

Kompetenzen

Kompetenzen

Top-Skills

React TypeScript Front-End GUI-Entwicklung Webentwicklung Responsive Webdesign Plattformunabhängigkeit App-Entwicklung Webapplication Web Application Mobile Apps GUI CSS HTML HTML5 CSS3 NoSQL PostgreSQL

Produkte / Standards / Erfahrungen / Methoden

Profile

Designing and developing interactive user experiences is my passion.


Skills

  • JavaScript, TypeScript
  • HTML, (S)CSS, Node.js
  • React(-Native), Expo
  • Next.js, RemixRedux,
  • Zustand
  • Node.JS, Firebase,
  • GraphQL, Serverless
  • Jest, Detox
  • FP, OOP, Python
  • MySQL, Postgres
  • NPM, Git, Ramda
  • GitHub, Gitlab-CI
  • Bash, VSCode, NeoVim
  • Ubuntu, MacOS, Docker
  • Leadership, Ownership
  • Mentoring, Team building

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

Fragen?

Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

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