VyprVPN is the app I worked on during my employement at Golden Frog GmbH. I was the lead software engineer in a team of 4 android engineers for over 4 years. My responsibilities included:
Research and continuously enhance secured VPN application for Android.
Implement features and fix bugs in VyprVPN for Android.
Lead the team of Android engineers and practice agile methods.
Use both Android NDK and Android SDK for implementing features.
Utilize Jira, Confluence, Bitbucket, Bamboo etc. to work in an agile environment.
Collaborate with other teams like DevOps, iOS, Mac, Windows etc.