Android Experts in Germany

Analysis and structuring of business and technical requirements for the further development of the LS One checkout system. Designing solution proposals and translating them into precise implementation tasks for international development teams. Prioritizing and coordinating requirements from a functional perspective, taking business and legal requirements into account. Quality assurance through reviewing, testing and evaluating the implementation based on defined acceptance criteria. Functional support for international deployments and rollouts, as well as analysis of feedback from locations for release planning.

Additionally: Supporting the integration of Anybill to provide digital receipts, as well as coordinating business and technical requirements within the existing POS environment.

Responsible for the strategic and operational coordination of app development for the Hameln-Pyrmont district

• Development and implementation of the digitalization strategy for citizen-focused mobile services and the optimization of internal administrative processes
• Requirement Engineering: Systematic collection of complex administrative requirements and conversion into structured user stories
• Stakeholder management: Coordination between specialist departments, citizens, administrative levels and external service providers in multi-level committee structures
• Prioritization and management of the Product Backlog while taking compliance requirements and regulatory guidelines into account
• Participation in agile ceremonies and coordination meetings for continuous product improvement
• Integration of GDPR requirements and administration-specific security standards into the development process
• Citizen participation: Coordination of feedback processes and user-focused tests to increase digital citizen satisfaction

• Develop custom AI agents delivering 90%+ reduction in manual workload and significant efficiency gains
• Provide end-to-end AI strategy consulting: from digital assessment to implementation and change management
• Design and deliver tailored training programs and workshops on AI adoption, prompt engineering, and automation
• Support clients in implementing scalable AI solutions integrated with existing technology stacks
• Focus areas: AI strategy, automation, workflow optimization, and capability building

• Hands-on development of AI-native product prototypes with specialized AI agents for research, requirements, business logic, UX/flow design, test case generation and quality assurance.
• Structured use and orchestration of AI agents through clearly defined roles, inputs/outputs and handover points; breaking down complex product tasks into verifiable work packages and iterative prototyping cycles.
• Establishment of human-in-the-loop quality gates to validate AI-generated results for functional correctness, consistency, completeness and feasibility; targeted rework cycles in case of deviations.
• Development of a regulatory GenAI/rules prototype for CRD VI with a structured decision flow, web UI, rule-based validation and automated test cases; iteration of the business logic through to a pilot-ready POC.
• Design of an AI-to-Action banking prototype: AI intent → consent → bank/product logic → conversion including admin console; translating the product idea into MVP scope, role model, user flows and clickable prototypes.

• Planned and developed a CPU monitoring application for monitoring system performance and resource utilization.
• Designed and implemented a Spring Boot backend providing a REST API for processing and exposing monitoring data.
• Developed the React frontend for presenting monitoring information in a clear and user-friendly interface.
• Integrated PostgreSQL for persistent storage and management of application data.
• Containerized the application and its services using Docker Compose.
• Automated infrastructure provisioning and deployment using Terraform on AWS.
• Structured the application as a modern, maintainable system using REST-based communication between frontend and backend.
• Designed and developed a secure, scalable CPU monitoring architecture (cpu-watcher) with a dedicated collector application that streams monitoring data to the backend, reducing direct exposure of system resources.
• Designed a secure cloud infrastructure with the database isolated within a private network and OIDC-based authentication.
• Implemented Infrastructure as Code with Terraform and integrated version-controlled CI/CD pipelines to automate testing, infrastructure changes, and application deployments.
• Designed and implemented the frontend delivery architecture using AWS CloudFront.

Stack: Spring Boot · React · PostgreSQL · REST API · Docker Compose · Terraform · AWS

Reporting and controlling using Power BI for a production ERP system

• Analysis of ERP data and interfaces for use in Power BI dashboards
• Evaluation and migration of existing reports (e.g. Excel) to Power BI
• Development of an authorization concept for selective data access
• Documentation and training on the use and customization of Power BI dashboards

Label: Power BI, Excel, SelectLine ERP, Microsoft SQL, SQL Server Management Studio

Project: Defect Generation on Test-Bench Images of Metal Surfaces Environment: Automated Visual Inspection (AVI), Metallurgy & Manufacturing

• Objective & Implementation: Designed, architected, and trained Generative Adversarial Networks (Pix2PixHD / SPADE) for image-to-image transformation. Targeted generation of synthetic material defects (e.g., cracks, inclusions, scale) on rough metal surfaces under real test-bench lighting conditions for privacy-compliant and efficient dataset expansion (data augmentation).
• Technical Design: Implemented robust Generative AI and computer vision pipelines in Python and PyTorch. Used semantic segmentation approaches for mask-controlled defect synthesis and subsequent evaluation with EfficientDet object detection models.
• Business Impact: Massive dataset upscaling (10x) without time-consuming and costly physical test-bench runs, while significantly improving the detection performance of automated inspection systems.

Technologies & Skills Used: Python | PyTorch | SPADE | Pix2PixHD | EfficientDet | Machine Learning | Semantic Segmentation | Computer Vision

• Implementation of a full-stack application with Angular as frontend framework and Java as backend language
• Use of the Swagger OpenAPI specification for REST communication between frontend and backend applications
• Control of a card printer via the Nexus Card SDK framework
• Design and implementation of card management software with web interface and JavaFX module for printer monitoring
• Use of Cucumber tests for test automation and creation of test artifacts for testing outside the development environment
• Use of Wireshark for network investigations to analyze the API of a third-party product and to check the REST API of the self-developed software

Re-engaged to own two product streams end to end, from concept and UX design through to AI-assisted implementation.

• Redesigned the offer and follow-up journey across 38 insurance plans, 16 providers, and four age segments, spanning web, WhatsApp, email, and SMS.
• Launched the rebuilt conversion flow in a live A/B test against the legacy version - evaluation still in progress.

• Concept, interaction and UX for XR experiences for the automotive industry
• Optimizing XR experiences
• Building experiences with AI

• QA Lead for end-to-end quality assurance of the Sparkasse & Sparkasse Business banking apps (iOS/Android); design and implementation of the Test Strategy including functional testing, regression testing, and UAT for eID, Push Notifications, and white-label components
• Creation and maintenance of test concepts and test plans in TestRail; structured Defect Management and error analysis; stakeholder management and risk management for the early identification of critical quality risks
• Accessibility Testing according to WCAG 2.1 (iOS/Android); coordination of AI-supported test automation and optimization of test processes to shorten release cycles
• Release Management: planning, management, and coordination of all test activities; status reporting to management and stakeholders; quality assessment of releases and release recommendations in an Agile/Scrum environment
• Challenge: Highly complex build and release process across several Sparkasse institutions; close coordination with the DevOps team to stabilize the CI/CD pipeline and ensure reproducible test builds before every release.

Tools: Jira, Confluence, TestRail, Android Studio, Xcode, Firebase, Jenkins, GA4

• Success: Successful launch of the eID authentication process - quality assurance ensured for 50+ Sparkasse institutions

Service & Release Management:

• Initially solely responsible for operational customer service and release management for three months until the team was scaled up
• End-to-end release communication: coordination with development and hosting, client-specific release notes, distribution management, dispatch and follow-up of feedback
• Participation in release acceptance through hands-on testing; close alignment with release planning
• SLA-driven case handling in ServiceNow; ticket processing times tracked as a KPI for improving service speed
• Central interface between federal authorities, specialist departments and development; escalation management, internal dailies and monthly client reviews

Process Development:

• As-is/to-be process analysis and visualisation (draw.io, BPMN), incl. interfaces to adjacent departments
• Service-oriented process handbook with clearly defined roles and responsibilities
• Walkthrough and optimisation of service processes in the ITSM framework together with IT
• Incident workflows between ITSM tools and Jira; Jira project configuration and shared dashboards
• Improvement management: quick clarification with development or structured submission with tracking in Jira

Enablement & Knowledge Management:

• Handbook for GSB 11 customer management incl. ServiceNow handling, work instructions and client templates
• Self-service documentation, step-by-step guides and client-specific service records in Confluence
• Supporting client authorities through the transition from rollout to live operations
• Onboarding a colleague from the GSB 7 team: knowledge transfer between teams, shared best practices and short-term reinforcement of the GSB 11 team
• Establishing post-rollout interviews to evaluate the transfer of responsibilities between departments
• Evaluation of internal AI agents for incident communication and guide creation

• Led discovery phase and POC for Shopware to Shopify Plus migration across EMEA markets, evaluating platform suitability, technical architecture, and multi-brand/multi-country capabilities against business requirements.
• Designed reference architecture for Shopify Plus implementation incorporating headless front-end patterns (Vue.js, Nuxt.js), CMS integration (Magnolia), and Azure middleware (APIM, Functions, Logic Apps, Service Bus) for 11 EMEA markets.
• Defined migration strategy analyzing data mapping, cutover approach, and zero-downtime deployment patterns using Varnish caching, GitOps pipelines, and CI/CD orchestration across six vendor teams.
• Architected multi-tenant Shopify Plus governance model with centralized admin, localized storefront customization, and compliance controls (GDPR, data residency).
• Prototyped AI-driven search optimization (LLM.txt, JSON-LD) for product discoverability in Google AI results, demonstrating post-launch performance opportunities.
• Defined EMEA expansion roadmap for 15+ markets through C-level strategic workshops, identifying phased rollout, market-specific configurations, and resource requirements.
• Tech Stack: React, Nuxt.js, Vue.js, Magnolia CMS, Shopware, Shopify Plus, Azure (APIM, Functions, Logic Apps, Service Bus, Front Door), Varnish, SAP, MS Dynamics, Docker, Kubernetes, GitHub Actions, PostgreSQL, Kafka

Helping product organizations to grow and scale business by creating digital products customers love.

• Built an MVP and launched a new business line of long-term e-scooters rental at Nordic and German markets for TIER Mobility.
• Reorganized and led product team; launched and scaled deposit warranty service; improved subscription pricing performance; smoothly handed over duties to hired PMs for ImmobilienScout24.
• Ideated and launched Marketplace product for the biggest telehealth service in the US; discovered and validated multiple Marketplace addons; launched live interpreter and whiteboarding services for major medical institutions for Doxy.me.
• Established the growth framework and processes in a Series A B2B Fintech start-up for VAI Trade.