Freelance Developer with a focus on Web- and Mobile-Development

12/2019 – 4/2022

At MIA, we were building a mobility-data analysis platform for cities and mobility companies to optimize mobility fleets and enable data-driven city-planning.

• handling of executive tasks such as SaaS sales and company representation at meetups, conferences and client meetings

• deciding on company direction and strategy, product management and market positioning for our software offerings

• development of the multi-tenant customer-facing analysis application using React, GraphQL and Mapbox, integrating with various backend services, such as data pipelines and databases

• hiring and management of three employees at peak

• website design and writing of promotional material, applications for public funding and awards

• won German Mobility Award 2021 and RWTH Aachen SpinOff-Award 2021

Geschäftsfeldstrategie, Graphql, Operatives Marketing, React (JavaScript library), Typescript

4/2018 – 2/2021

• development of the Liefery Android App in Flutter and Dart, previously Scala on Android

• implementation of internal tooling, which manages releases, rollbacks, CI/CD Pipelines and multi-tenancy

• contributed to transition from a "Scala on Android"-Stack to a "Flutter"-Stack

Android Entwicklung, Docker, Flutter, Continuous Integration, Scala

6/2017 – 12/2017

• development of the Liefery Courier Android App in Scala and Java

• designing screens and implementing them in Scala and XML

• refactoring outdated code into modern code style

• working with REST-APIs and implementing business logic

Design (allg.), Java (allg.), Representational State Transfer (REST), Scala