Senior Android developer

At 9to5 we develop complete software systems consisting of native apps, websites and backends for customers and for ourselves. We have clients in all kinds of different industries, from cryptocurrencies to pregnancy forums, from bike lockers to real estate agencies. As an Android developer you will work on a specific part in all these kinds of different projects. We prefer to make the entire system, so that we can work on it with the entire team and guarantee high quality. We would love it if you could join our team!
  • Available for 32 - 40 hours
  • >= 4 years relevant work experience
  • BSc or MSc
  • passion for the profession!
  • experience with iOS
  • experience with GraphQL backends
  • MSc

Working at 9to5

At 9to5 you work in a small team of software engineers. Tom and Susan started the company in 2012 after their education at TU Delft and are actively participating in the development of the software. We have UX / UI designers and web, Android, iOS and back-end developers in-house. As a result, we often work on a project with the entire team. We are all in one room and often work hard and concentrated, but there is also time for fun. Dress code is casual, but representative.
On an average working day you arrive between 8:30 am and 9:00 am, we have a standup at 9 am and we get to work. Around 10 am it is time for coffee with a cookie and then continue working until lunch. Lunch is shared and delivered weekly at the cost of 9to5. After lunch we work until 5:00 PM to 5:30 PM. Is it a Friday? Then the day will end with a nice drink anyway, but that is not excluded on any other day.
Hardware at 9to5
  • MacBook Pro (or what you like)
  • 4K screen
  • Laptop stand
  • Apple Magic Mouse or Trackpad
  • Bureau - in hoogte verstelbaar
Software at 9to5
  • JIRA - for project management
  • Slack - to chat with each other and customers
  • Bitbucket - version control
  • Google Workspace - for docs & meets
  • Harvest - to keep track of your hours

About the position

As an Android developer at 9to5 software you work with the latest systems. Our projects are setup with Kotlin. We often use Hilt for dependency injection, we love coroutines/flows and prefer native apps and test-driven development.

Wat are we looking for in an Android developer? You:

  • have experience with creating an app from start to finish by yourself
  • know how to convert a design (Figma / Sketch) into an app
  • have experience with creating apps for customers
  • are communicative
  • love keeping up with the latest developments in the field and try them out

Skills required:

  • Strong knowledge of Android SDK
  • Familiarity with GraphQL API's and RESTful API's, to connect Android applications to back-end services
  • Strong knowledge of Android UI design principles, patterns and best practices
  • Ability to understand business requirements and translate them into technical requirements
  • Familiarity with Firebase (crashlytics), CI/CD tools, Google Play console, Retrofit, Apollo GraphQL, Dagger Hilt

We offer you the following terms of employment:

  • You get an unlimited number of vacation days.
  • You get a MacBook Pro to work on, you can just take it home and set it up as your own laptop.
  • You will receive a 4K screen at your own workplace.
  • Lunch and drinks at the expense of 9to5.
  • We offer you travel allowance if you live further than 5 km from our office based on € 0.19 per km.
  • During COVID-19 we work (mostly) from home but there are options to work at the office
  • Fully remote is also an option
  • A sustainable workplace. The office building is fully circular and can be disassembled and build up again somewhere else.
Are you interested in this position? Please send us your resume to
I want to apply!

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