Our client is one of Europe’s fastest growing mobile companies with five million active customers, 1,400 employees worldwide and operations in nine countries. It is a telecommunications company providing services in many countries around the world, using the mobile virtual network operator business model. Lebara Mobile provides Pay As You Go mobile SIM cards, targeted towards the needs of international communities and migrant workers. 

Job Description
We are looking for an Android developer responsible for the development and maintenance of applications aimed at a vast number of diverse Android devices. Your primary focus will be the development of Android application and its integration with back-end services. You will be working along-side other engineers and developers working on different layers of the infrastructure.
The app allows users to securely manage their mobile accounts and perform such actions as:

• Top up a credit either via credit, debit card, Paypal, iDEAL or even physical voucher
• View your balance
• See the remaining allowance on  mobile data plan or bundle
• View your activity over the last 30 days
• Access online support to get answers to the most frequently asked question 

Responsibilities

• Translate designs and wireframes into high quality code
• Design, build, and maintain high performance, reusable, and reliable Java code
• Ensure the best possible performance, quality, and responsiveness of the application
• Identify and correct bottlenecks and fix bugs
• Help maintain code quality, organization, and automatization

Required Skills

• 3+ years of relevant working experience
• Strong knowledge of Android SDK, different versions of Android, and how to deal with different screen sizes
• Familiarity with RESTful APIs to connect Android applications to back-end services
• Strong knowledge of Android UI design principles, patterns, and best practices
• Experience with offline storage, threading, and performance tuning
• Knowledge of the open-source Android ecosystem and the libraries available for common tasks
• Ability to understand business requirements and translate them into technical requirements
• Familiarity with cloud message APIs and push notifications
• A knack for benchmarking and optimization
• Understanding of Google’s Android design principles and interface guidelines
• Proficient understanding of code versioning tools, such as Git
• Familiarity with continuous integration
• Upper-intermediate English

Project’s technology stack
Apart from standard Android components: 

• Support lib UI (ConstraintLayout etc.)
• Network: Retrofit + OkHttp 
• Play Services: Maps, Location, Remote Config, Chrome Custom Tabs, Dynamic Links, Cloud Messaging
• Dependency injection and cross component communication: Dagger, ButterKnife, EventBus
• Event tracking and crash reporting: Firebase
• Test automation: JUnit, Mockito  + PowerMock, Espresso + UI automator

We offer:

• Flexible working hours
• A competitive salary and good compensation package
• Possibility of partial remote work
• Best hardware
• A masseur and a corporate doctor
• An inspiring and comfy office
• Healthcare & sport benefits

Professional growth:

• Challenging tasks and projects
• An individual development plan
• Meetups and events for professional development
• Mentorship program

Fun:

• Corporate events and outstanding parties
• Exciting team buildings
• Memorable anniversary presents
• A fun zone where you can play video games, football, ping pong, and more.