Senior Mobile Developer Android (Visa Sponsor) // InStaff

March 1, 2019


You are able to build fast, elegant and powerful mobile apps, that can access device hardware, communicate with a Restful API and cache as well as synchronize data locally? You already have experience in Reactive Programming and in building modern Android apps? We are looking for ambitious mobile developers to join our team!

Our product roadmap includes:

  • Native mobile applications so that our jobbers can manage their applications on the go (the Android app already exists)
  • Expansion of our REST API that enables our customers to manage their short term staff via this API
  • Scoring algorithm that uses Machine learning techniques to rate the reliability of our jobbers
  • A free-to-use shift-planning software that generates leads for our staffing marketplace


  • 1 year of experience in developing for Android (ideally with an application in the Google Play Store)
  • Experience in Reactive Programming (e.g. RxSwift or RxJava)
  • Solid knowledge of Java / JVM
  • Solid knowledge of software design patterns and good architecture
  • Deep understanding of the Android operating system
  • Familiarity with RESTful APIs
  • Great skills in analyzing, debugging and resolving defects
  • Familiarity with continuous integration
  • Proficiency in code versioning with git
  • Fluency in written and spoken English

Bonus points for

  • Experience with mobile tracking frameworks
  • Experience with Machine Learning / AI algorithms
  • Experience with managing a mobile development team


  • Very competitive salary between 50k and 60k EUR depending on your experience
  • We sponsor your visa if you are not an EU resident and accompany you during the visa process
  • Once you arrive, we help you set up everything to get started: Registration, Bank Account, Health Insurance, Tax and Social Tax ID, etc.
  • You will work with the latest equipment, including a MacBook Pro, top notch Google Phone and additional gadgets / tech equipment you like to use (headphone, monitor, etc.)
  • You work in our spacious office in the heart of Berlin (near Checkpoint Charlie)
  • You have flexible working hours
  • Twice a week, we offer free lunch for the whole company
  • Three times a week we offer free professional fitness training outside of our office
  • Twice a week you can participate in a free German language course during working hours
  • We have free company fun events about once per quarter


InStaff connects employers to qualified workers for temporary jobs online. Companies and private persons can request, manage, contact and book more than 50.000 workers for short-term jobs through our proprietary online platform.

We are developing the platform from scratch since 2014 and it belongs to the fastest growing companies in Germany according to several independent rankings (16th in the ranking of Gründerszene, 2nd in FOCUS, 1st in Deloitte). To further foster this growth, we are now looking for talented and ambitious new team members in several areas.

Visit the company website