Xcode Experts in Germany

• Reviewing functional and technical requirements from a testing perspective
• Creating test cases and automated tests to validate requirements
• Performing manual and automated functional, end-to-end, and regression tests
• Documenting test results and tracking defects
• Using models like GPT-4, BERT, and Hugging Face Transformers for automated test case generation, analysis of test results, and improving test coverage, including bias checks and security reviews
• Techs: MS Office, Jira, Zephyr, Confluence, Tosca, stakeholder communication, Agile, Kanban, Scrum, OpenAI API, Hugging Face, PyTorch, LangChain.

• Contributed to the architecture design process, resulting in scalable and maintainable solutions for complex projects.
• Enhanced app performance by optimizing code and implementing efficient algorithms.
• Stayed current with industry trends to ensure implementation of best practices in app development.
• Led a team of iOS developers for timely completion of projects and achieving client satisfaction.
• Translated basic design plans into full iOS app frameworks, delegating project components to appropriate team members.
• Estimated work hours and tracked progress using Scrum methodology.

• Technical project management for a new policy and quote management tool in individual, commercial and specialty insurance
• Extending an established standard solution with dedicated lines of business modules for industry and public institutions
• Setting up project structures, teams, organization and communication processes
• Integrating the solution into the existing insurance ecosystem and connecting it to various systems
• Stakeholder management and classical project management (in time, in scope, in budget)
• Overall responsibility for project budget and deliverables
• Initiation, planning, execution, testing and go-live
• Tools used: MS Office, Jira, Confluence, Xray

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

• Architecture and implementation of a fully digitalized closing flow for managing securities contracts within the DVAG infrastructure. The platform aims for maximum user-friendliness, modular extensibility and compliant handling of sensitive data.

• Implementation of a reactive UI structure with a focus on user guidance & accessibility.

• Dynamic control of form and closing processes including validation logic.

• Reactive state management via SignalStore (signals + selective effects).

• UX optimization through adaptive components and Playwright-based UI tests.

• Backend modularization to connect existing sales and contract logic.

• API stability and DTO design according to Clean Architecture principles.

• Collaboration with domain teams to define technical contracts and service boundaries.

• Management with GitHub.

• Unit tests with Jest, E2E tests with Playwright.

• Code reviews, CI-integrated test execution, iterative refactorings.

• Ensuring high coverage and UI stability in the closing flow.

• Technologies: Angular 18, RxJS, SignalStore, HTML5, SCSS, Spring Boot, Kotlin, REST, OAuth2, Jest, Playwright, Clean Architecture.

• Support in restructuring and designing the group's internal Android apps
• Defining essential modules and implementing accessible components
• Establishing agile approaches at an international level
• Technologies & Methods: Kotlin, Android, JUnit 5, Koin, Azure DevOps, Android Studio, Git, Jetpack Compose, Coil, Flow API, Ktor, Coroutines, TypeScript, Node.js

• End-to-end quality assurance in a global S/4HANA transformation program.

• Automated test data setup, evaluation of search and generation solutions, and PoC execution (K2View, EPI-USE).

• Coordination between Siemens teams and external partners, and structured knowledge transfer to internal stakeholders.

• Created a basis for PoC decisions and sped up tool selection.

• Standardized test data provisioning and noticeably reduced lead times.

• Established governance for test data processes (policies, roles, KPIs).

• Sustainable know-how transfer: empowered internal teams to operate solutions on their own.

• Methods & technologies: S/4HANA, SAP, K2View, EPI-USE, test data management, data masking, data provisioning, test strategy, test management, coaching & enablement, Azure DevOps, Microsoft Office 365, Gemini.

• PAYBACK GmbH: PAYBACK app - a loyalty bonus program and customer card that allows users to collect points.

• Enhanced the application's architecture by restructuring and modularizing it.

• Refactored and improved complex features using SwiftUI and The Composable Architecture.

• Maintaining, bug fixing, optimizing, troubleshooting, and continuously improving the app.

• Facilitating and planning the onboarding of new developers and providing mentorship.

• Assistance in the hiring process, including evaluation, interviews, and strategic planning.

• Porsche Digital GmbH: Development of the Porsche Road Trip app that allows users to comfortably plan and navigate through spontaneous drives and individual road trips along curated premium routes.

• KI Labs: Development of a MVP for a large automotive company.

• Snapp Mobile Germany GmbH: Equitel Banking - Consumer digital banking app for Equity bank, one of the largest banks in Sub-Saharan Africa.

• comdirect Mobox - Banking app to manage current, savings and credit card accounts for teenagers. Addressed technicalities of implementing playful UI with customizable options and various offline features.

• Deutsche Bahn AG - Development of a prototype for the next generation of companion app for train travellers.

• optile GmbH: KPI Dashboard - KPI tracking of online payments for merchants that use optile's online payment solutions.

• Every Interaction: Watchy - Composer of Apple Watch screenshots, which allows users to export the composed image and share it.

• IAUP (Interregional Academy of Personnel Management) commissioned the development of a distance learning system for its secondary school subdivision.
• Development of the website [link]
• Development of a billing system and integration with various payment systems
• Development of a distance learning system based on the open source Moodle solution
• Integration of the distance learning system into the user office on the [link] website
• Front-end: Vue.js v2, Nuxt.js, JavaScript, HTML, CSS, SCSS
• Back-end: LAMP (Linux, Apache, MySQL, PHP), PHP Framework Laravel, Redis, Swagger, MySQL 8.x, PayPal API
• DevOps: Docker, CI/CD, GIT

• Maintenance and extension of the DMS (Dealer Management System) created by Mazda, as well as the 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 on a Firebird database
• Creation and maintenance of SOAP/REST based interface connections
• Technologies: Delphi, C#, .Net, SOAP, REST, Firebird, OAuth, Jira, DUnitX, Git

Developed an app for automatic safety checkins with heavily relying on AI-Tools:

Real-time Safety Monitoring - Continuous activity tracking using device motion sensors with automatic status verification through Firebase-based safety pings Emergency Contact System - Share code-based contact invitation system allowing trusted users to monitor real-time status with battery levels and last activity Background Processing - Robust Android foreground services and WorkManager integration ensuring 24/7 monitoring without interruption Smart Notifications - Firebase Cloud Messaging for instant alerts to emergency contacts Sleep Scheduling - Configurable quiet hours to prevent unnecessary alerts Premium Tier - In-app purchase system with unlimited contacts

• Development of an application for macOS to view and download video streams as well as to view and record live TV streams.

• Technologies: C/C++, Objective-C, Qt 6.7.2 / Qt 5.9.6, QtCreator, QtDesigner, QtLinguist, Xcode, UI development based on QtWidgets, qmake, make, git, shell scripting, Apple LauchAgents, Apple AVFoundation, ffmpeg, ffplay, fffprobe.

• Platforms: macOS Sonoma, macOS Mojave.

• Development of iOS apps in Swift
• AI-supported SW development using Vibe Coding with Claude Code
• Web applications through Vibe Programming
• Use of Swift, Xcode 15, Claude Code, Proxmox, GitLab, Visual Studio Code, Cursor, Doors, ClearCase
• Use of MS Project, OpenShift, Docker, Project Server, PageMaker, CRM, MS SQL Server
• SW techniques: UML, BPMN 2.0, ERD, client/server technology

• Managing projects, including steering the international project team of up to 15 staff
• Intensive customer communication
• V-model according to Automotive SPICE