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 client workshops to document the requirements for the apps. A key aspect was security-compliant development according to BSI standards, as the apps were reviewed by the BSI at each sprint, 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 in charge of deploying the apps. Update: The apps have since been removed from the App Store. The website is still available.

• Healthcare
• PR review, development, business analysis, CI, CD, pipeline definition
• Project language: English
• Scrum later Kanban
• Tools: Jira / Confluence / InVision later 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 there, we achieved significant milestones: a full redesign, refactoring existing structures, and migrating the app from Objective-C to Swift. As experienced project members, a colleague and I coordinated the handover of the app to a new team and led the onboarding of the new company to maintain the native application. Aiming to create a future-proof app architecture based on microservices, OpenID Connect played a key role in our project. We held workshops, wrote technical requirements, and drew sequence diagrams to translate business needs into technical solutions.

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

Project: Deutsche Post project.