PHP

Software architect on DE-CIX's Cloud ROUTER — designed an event-driven API layer on Apache Kafka to modernise a grown network management architecture without disrupting live operations at one of the world's largest internet exchange points.

Built a production-ready SaaS platform bridging a research-grade AI music search model with subscription management, payment integration, and serverless inference. Symfony backend, React (Remix) frontend, AWS Lambda inference.

Software engineer on the Shopware 6 migration for a large German home improvement retailer — 150,000 SKUs, RabbitMQ-based data pipelines, Elasticsearch integration, and full ERP sync under a tight delivery deadline.

Lead developer on a full Shopware 6 system replacement for a German cruise company, triggered by a security incident — containerised with Podman, CI/CD on GitLab, delivered under tight deadline with no downtime or data loss.

Full-stack developer on the DE-CIX member self-service portal — Vue JS + TypeScript frontend, PHP backend, and extensive test coverage (PHPUnit + Cypress) for a complex peering domain model.

Developed a new Shopware 6 store for a Swiss cycling manufacturer that emphasises community interaction. Customers can upload pictures of their bike designs, register bikes to extend warranties and engage directly with the brand.

Relaunched the online shop of a German tea producer with a content‑first approach. Implemented intuitive content management interfaces tailored to editors, enabling them to maintain and present product information quickly and accurately.

Built a Shopware 6 e‑commerce platform for a German wheel manufacturer. The system includes extensive vehicle search, instant access to TÜV certificates and compatibility lists, user‑generated content for conversions and automated order imports from various channels.

Developed a highly scalable and privacy‑compliant appointment booking platform for government agencies and public authorities. The system supports flexible scheduling, robust data protection and seamless user experiences.

Created a web application connecting non‑profit organisations with volunteers. Organisations can describe themselves and their needs, while volunteers can search for opportunities and contact organisations directly.

Designed an API to receive consumer receipts, identify qualifying products and award instant prizes. The API was built to withstand heavy traffic and integrate seamlessly with promotion campaigns.