Objective-C Experts in Germany

Internal systems with regulatory and security requirements could not be used directly by AI tools for incident triage, troubleshooting, and documentation search. The goal was to securely integrate these systems through MCP while preserving existing acce...

Developed a custom Kotlin Multiplatform app with a Spring backend and AI features.

• Development of an iOS app that combines public transport and sharing services
• Collaboration according to Scrum in a large cross-functional team
• Creation of reusable components with SwiftUI and Combine
• Development of a custom solution for Apple Maps

• Environment: AWS, Ruby on Rails, GraphQL, React Native
• Penetration test for Backend, Android-App and iOS-App

• Conducted research and development in the field of large-scale 3D reconstruction

• Maintenance and enhancement of the DMS (Dealer Management System) developed by Mazda, as well as external interfaces to various third-party systems
• Management of service orders and provision of central components such as customer and vehicle management
• System design and further development/maintenance of the Delphi application using a Firebird database
• Creation and maintenance of SOAP/REST-based interfaces
• Technologies: Delphi, C#, .Net, SOAP, REST, Firebird, OAuth, Jira, DUnitX, Git

• Freelance product owner, scrum master and agile coach in various projects spanning from local agencies to multinational corporations in diverse industries.

• Last projects:

• Adevinta: Technical Project Manager responsible for coordination of several sub-workstreams building the world’s largest classifieds multi-tenant platform.

• Aroundhome (a ProSiebenSat.1 company): Product Manager implementing and verifying on the business side a concept for digital qualification of user requests for matching service providers.

• Peek & Cloppenburg Düsseldorf: Product Manager Mobile advising on and guiding the rebuild of Android and iOS apps.

• Visual Meta GmbH (an Axel Springer company), Berlin: Director Product co-leading the Product & Engineering department together with the Director Engineering.

• Responsibilities at Visual Meta GmbH:

• Define and deliver a 3–5 year horizon product strategy including a product vision & mission connecting to existing company strategy and strategies from adjacent departments.

• Refine an existing OKR process together with OKR master and directors of other departments to increase focus and outcome.

• Support the Director Engineering in creating a platform transformation strategy to transform a monolithic on-premise tech stack into a service-oriented, cloud-based architecture and establish a domain-based organizational setup.

• Accountability for a motivated and talented team of 5 head-level colleagues and 17 operational team members from product management, data and UX/UI design.

• Key achievements at Visual Meta GmbH:

• Defined and delivered a 3–5 year horizon product strategy including a product vision & mission.

• Increased focus within OKR process by moving from 10 company-level objectives to 2 and from several hundred team-level key results to a few dozen.

• Created a career path framework for the product team defining roles and responsibilities from junior to head level positions.

• Maintenance and further development of the Java/Swing-based @rtus FormsEditor
• Design and development of a graphical formula editor based on Google Blockly for representing a project-specific DSL, including parsing and code generation
• Implementation of character-accurate synchronization between the editor and print preview to improve the user experience
• Technologies: Java 17/21, Swing, JavaFX, JBoss/Wildfly, JUnit, Mockito, Blockly, JPedal, ICEPDF, Eclipse

• Worked on FPGA enhanced network encryption device with secure boot, TPM2.0 and smart card integration for BSI approved usage with Post Quantum Cryptography
• Developed and audited Linux drivers
• Collaborated using GitLab, Gerrit, Confluence and Jira
• Technologies: C, C++, Secure Boot

• Contributed to the architecture design process, leading to scalable and maintainable solutions for complex projects
• Improved app performance through code optimization and implementation of efficient algorithms
• Led a team of iOS developers to complete projects on time and achieve customer satisfaction
• Implemented core design plans into complete iOS app frameworks and delegated project components to corresponding team members
• Key project: City Guide ([link]

• Strategic consulting on marketing funds (WKZ) and retail media, focusing on monetization opportunities and data-driven business models
• Conducting a portfolio analysis of existing WKZ measures to assess the revenue and ROI impact of WKZ investments on supplier performance
• Potential analysis of digital WKZ products and initiatives to identify growth and efficiency levers
• Preparing and presenting the results to management and deriving a strategic move-forward plan
• Designing and facilitating several executive workshops to develop a holistic retail media vision and transformation roadmap
• Defining and prioritizing retail media business cases for data-driven evaluation of investment options
• Developing a technical target architecture considering heterogeneous ERP infrastructures and designing an integrated loyalty program
• Designing change management, including impact analysis on organizational structures and processes
• Creating and presenting C-level decision templates
• Establishing a clear retail media governance structure and technical foundation for data-driven marketing
• Developing a roadmap for implementation in 2026

• Testing the SekIDP and related components
• Test design, execution and automation, microservices, GitHub Enterprise, Eclipse, Katalon Test Platform, API Testing, Confluence 8, JIRA/Xray, Draw.io, Swagger/OpenAPI, Postman, Docker, Kubernetes, Podman, PuTTY, E-Health, Telematik, Gematik standards, EPA, E-Rezept, sektoraler IDP, encryption, XaDES, PaDES, DICOM, HL7, FHIR, IHE, ICD, SSO, SAML/Shibboleth, OAuth, smartcards, JWT, two factor authentication Android and iOS, Wireshark, BrowserStack, Cypress, gRPC, REST, SOAP, WS-Security, Linux Shell, PowerShell, SSH/SSL, Java, Kotlin, Cordova, Gradle, Groovy, Python, TypeScript

• Supported a telematics component in the automotive sector with SELinux and open-source license management.
• Products: SELinux, iMX8, ScanCode.
• Skills: Linux, firmware development, Python.