Senior Fullstack Developer (React Node.js)

11/2020 – offen

I created a webpage (React) for managing corona tests in over 60 teststations with over 2mio registered users. The service was served via AWS (SNS, Cognito, Beanstalk), had different user roles, a lot of userData and stats, results were sendet automatically to the users and responsible authorities.
The database (mongodb) was connected via a Node.JS backend.
The Backend had to communicate with several external APIs, had build-in bots, huge role management, email sending service,....

Server Administration, React (JavaScript library)

12/2019 – 9/2021

Developing Node.js Backend for React Webapp and React-Native Mobile and React Web App. Backend had grapqhl API, push up notifications and subscriptions for a chat.
The App was very nicely and complex designed, had a lot of animations, and notifications, chats, profiles, connection to the Webapp.

Server Administration, React (JavaScript library)

8/2019 – 10/2019

Supporting web and mobile app (React + React Native). Doing Refactoring and adding new features.

React (JavaScript library)

10/2018 – 11/2022

Creating a web solution for managing cleaning stuff. Including several accounts and roles, stats, adding working times from cleaners, evaluations of admins, connection to accounting tools.

React (JavaScript library), Server Administration

6/2017 – 8/2017

Helping to make iOS App faster and finished to the end of year. Improve internal processes and showing best practices in iOS development.

iOS Entwicklung, It-Beratung

4/2017 – 2/2019

Adding new Features to the iPhone App that was downloaded by more than 30mio people. Fixing bugs, refactoring, adding analytics, working with PM and QA, using agile methods like kanban.

iOS Entwicklung

6/2014 – 2/2015

Creating an iOS App and Backend for detecting how horses feeling. Connected via Bluetooth and an own hardware system. Pretty cool project, but finances are failed, so we had to stop.

Server Administration, React (JavaScript library), Web Entwicklung

11/2013 – 5/2014

Developing an iOS App that had to connect via bluetooth to a small airgun and detect, whether the user was hit or not. Counting the shouts, get notifications when hit, push notifications, ...

iOS Entwicklung