WebRTC Experts in Germany

• Adaptation, optimization, configuration, and administration of a multi-stage GitLab instance with over 250 users
• Setup, adaptation, expansion, and optimization of infrastructure, configuration, and monitoring
• Provisioning of services and handover to production
• System environment: DependencyTrack, GitLab, Grafana, Hedgedoc, Kubernetes, Oauth2 Proxy, Openstack, Prometheus, Syseleven

• Developed an accessible, responsive website based on Figma designs for a major sports event in compliance with WCAG, BITV and EN 301 549
• Planned and set up the tool stack with Vite, Playwright, Docker and GitLab CI
• Worked on two existing projects (Vue.js & Nuxt), focusing on bug fixing, accessibility audits and developing new features
• Collaborated with Design and QA to consistently implement accessible UI patterns
• Advised on improving existing frontend architectures in terms of accessibility, performance and maintainability

Industry Software from Route to Invoice

In Production

In use at: landscaping company, two home care services

The entire workday, digital: sign-in, route plan on the vehicle, departure checks, photo documentation, time tracking, invoicing. The tablets keep working offline and sync afterward. Records are immutable, making time tracking easier to audit. Runs on a dedicated server in Germany with continuous monitoring and remote updates.

Proof: In daily use at the landscaping company with six vehicles since September 7, 2026.

• React Native on Android tablets
• Python
• SQLite
• Two-way synchronization
• Linux server in Germany
• Remote maintenance

• Development and rollout of a browser-based platform for camera streaming, augmented reality (AR), and visual computing
• Device-independent camera streaming for smartphones, tablets, desktop PCs, as well as VR and AR headsets
• Ensuring GDPR-compliant hosting in Open Telekom Cloud and other sovereign cloud providers
• Intuitive visual and collaborative features to increase efficiency and integrate smoothly into existing business software

• Bootstrapping a CloudOps team and building a multi-cloud provider backend for a low-code Internal Developer Platform (IDP) with env zero

• Introducing user story mapping, ADRs, milestones, and backlog management

• Designing and developing core APIs, setting up CI/CD pipelines, OpenTofu/Terraform scripts

• Representing and communicating the team with third-party stakeholders (e.g. env zero)

• (Cross-)team coaching on DevOps, software design, Terraform, Golang, and agile practices

• Set up the new digitization strategy.
• Using Camunda as a process engine, a new way of handling batch and dialog tasks is created.
• In close cooperation with the business department, the individual processes are created and put into production.
• Forms for controlling manual interventions, e.g. when adjusting applications, are implemented.
• Gradual migration of old code from IBM WebSphere to JBoss.
• Skills: Arquillian, Camunda, Initiative, Empathy, Hibernate, Jackson, Java/JEE, JBoss, Jersey, JSON, JUnit, Openness to criticism, Willingness to learn, REST, Teamwork, WebServices.

From Crude to Crafted: Refining Participatory Design Data into Stakeholder-Ready Outcomes

• Architected a production Document AI platform using Retrieval Augmented Generation (RAG) over 1,500+ participatory design artefacts to answer historical project queries with grounded responses.
• Designed LLM evaluation combining RAGAS, custom evaluation metrics and human-in-the-loop (HITL) validation workflows to evaluate factual grounding, response quality, and prompt performance.
• Built a React, TypeScript, and D3.js frontend for interactive exploration of AI-generated insights.
• Implemented input layer LLM safety controls and Guardrails, including PII redaction and foul language filtering.

• Defined a generic, universal system platform for XR (AR, VR) use cases as part of the European IPCEI initiative
• Evaluated available options for backend, streaming and client implementations
• Developed PoC implementations and conducted technical evaluation of potential components
• Led the development team and defined the target system architecture for a complete end-to-end solution
• Designed and integrated GenAI PoCs (LLM, time series, prediction, agents)
• Researched NeRFs and Gaussian Splatting for XR content creation and analyzed methods to measure and reduce system latencies
• Worked on GPU scheduling, CUDA and related topics
• Defined and implemented backoffice and end user dashboards using Grafana and Superset
• Used Jaeger tracing to analyze specific events
• Defined a GenAI-based automatic alerting feature for specific events and event clusters with KPI values
• Integrated AR/VR/XR IoT devices
• Collaborated with business development and UX teams in a parallel design thinking track to align technical and customer journey scopes
• Integrated the new services and platform into existing telco environments and analyzed tools like Camara for partial integration and handover scenarios

• Manage end-to-end delivery of software projects across healthcare, gaming, and communication domains.
• Serve as Project Manager, Product Owner, and Scrum Master for multiple Agile teams.
• Oversee scope definition, sprint execution, and delivery tracking using Jira and Confluence.
• Design technical architectures and API strategies integrating Twilio, CRMs, and VoIP systems.
• Lead AI/ML projects implementing recommendation engines and automation workflows.
• Support pre-sales with effort estimation, technical documentation, and proposal reviews.

• Project management, project controlling, client communication, stakeholder management, resource planning and procurement, proposal planning (change requests)
• Setup of a central data exchange platform (Nextcloud) for storing high-resolution terrain model data
• Consulting, implementation and standardization of laboratory equipment network clusters across multiple locations with connection to a central data exchange platform
• Requirements gathering and gap analysis for providing an internet-based data exchange platform, including end-to-end encryption and malware scanning
• Migration of a library management system to a new 3-tier architecture
• Expansion of a development and test environment to include acceptance test and production environments for a specialist application (electronic information system), including interfaces based on a 3-tier web application and development of a technical security concept
• Consulting project to replace various legacy systems with a 3-tier web architecture, including data migration
• Consulting project for a software simulation application considering IT security measures and BSI standards, as well as requirements gathering for a future IT infrastructure
• Upgrading the networks of a telecommunication system for building a WebRTC solution, as well as implementing network transitions via an SBC cluster and unifying the telecommunication system for cross-site collaboration
• Setup of a 3-tier production and testing environment to replace an existing specialist application and development of an information security concept

• Led a team of 6 software engineers to develop and maintain an AI-driven healthcare platform, enabling automated diagnostics and prescriptions based on real-time ECG data analysis
• Designed and developed a robust Revenue Cycle Management (RCM) system, integrating HL7 and FHIR APIs to enable seamless interoperability, real-time data exchange, and HIPAA-compliant data handling, improving billing efficiency, claim processing, and regulatory adherence in healthcare operations
• Migrated a legacy monolithic application to a scalable microservices architecture, enhancing system modularity, scalability and maintainability while implementing key design patterns such as Strangler, Database-per-Service, API Gateway, Saga and CQRS for efficient service communication and transaction management
• Architected and led a C# 9/.NET 6 microservices ecosystem handling hotel reservations, payments, and loyalty programs, enabling 99.99% uptime across 10+ services
• Defined OpenAPI/Swagger contracts and auto-generated client SDKs, reducing front-to-backend integration time by 50%
• Containerized each service with Docker and orchestrated deployments via Kubernetes, slashing release lead time from days to hours
• Designed PostgreSQL schemas optimized for high-volume transactional workloads and implemented Redis caching layers to accelerate read-heavy endpoints by 80%
• Built Kafka streaming pipelines for real-time availability updates and audit logs, processing 2 million+ events per hour with end-to-end delivery guarantees
• Implemented unit and integration tests for React applications using Jest and React Testing Library, ensuring 80%+ test coverage, improving component reliability, and preventing regressions
• Defined and deployed AWS cloud infrastructure using Terraform, while containerizing and orchestrating microservices with Docker and Kubernetes, improving automation and system scalability
• Built a scalable full-stack booking application using React 18 and Django REST Framework, integrating Celery and Redis for asynchronous task processing, while deploying on GCP with Cloud Run and Firestore, enabling real-time scheduling, payment processing, and automated notifications
• Mentored junior developers through code reviews, pair programming, and knowledge-sharing sessions, improving team efficiency by 30% while maintaining comprehensive API documentation using Swagger/OpenAPI

• Led the entire product organisation through complete rebuild of the product resulting in a 25% increase in engagement, considerably greater technical stability and a reduction in server costs.
• Product Manager for three teams: Media (webrtc), Cockpit (static functionality) and World (rendering engine).
• Coached and mentored the product organisation to become outcome-oriented and active in shaping their way of working.
• Led the transformation of the product organisation to start scaling. Implemented a culture of empowerment and discovery.