Mobile App Developer

Project: Robert Koch Institute / Federal Ministry of Health. Development of the CovPass, CovPass Check App and ePA WhiteLabel App, all implemented in Swift and based on the MVVM pattern with PromiseKit. My tasks also included participating in refinements and customer workshops to document app requirements. A key aspect was security-compliant development following BSI standards, as the apps were reviewed by the BSI at every sprint change, especially regarding data protection. The team was also responsible for maintaining and extending the CI/CD pipeline, using tools like Jenkins and Fastlane. We were also responsible for deploying the apps. Update: The apps have now been removed from the App Store. The website still exists.

• Healthcare
• PR review, development, business analysis, CI, CD, pipeline definition
• Project language: English
• Scrum then Kanban
• Tools: Jira / Confluence / InVision then Figma / Slack
• Team size: 5 people
• Git / GitFlow / SourceTree / GitHub Enterprise
• XCTest, XCUITest, FBSnapShotsTests, REST, JSON, CBOR, certificate pinning, certificates, encryption, decryption, private key, public key, OpenID Connect

Project: Telefonica Germany. At AUSY Technologies, I was part of the core development team responsible for Telefonica Germany's white-label apps. During my five years, we reached significant milestones: a complete redesign, refactoring of existing structures, and migrating the app from Objective-C to Swift. As senior project staff, a colleague and I coordinated handing over the app to a new team and led the onboarding of the new company into maintaining the native app. To create a future-proof app architecture based on microservices, OpenID Connect played a key role in our project. We ran workshops, created technical requirements, and drew sequence diagrams to translate business needs into technical solutions.

• Industry: Telecommunications
• Project language: English
• Scrum
• Jira / Confluence / Zeplin then Figma
• Team size: 12 people
• Version control: Git / GitFlow
• Apps in App Store: AldiTalk, Ayyildiz, WhatsAppSimm, Ortel Mobile, NettoKom, Norma
• Programming language: Swift
• Pattern: MVP (slightly adapted as needed, near Clean Swift)
• CocoaPods, private pods
• Tools: Zeplin, Paw, Swagger, XCTest, XCUITest, FBSnapShotsTests, Slack, JSON, REST, OAuth 2.0

Project: Deutsche Post.