AloisRietzler

A multi-tenant AI assistant platform was extended with RAG: company knowledge bases were connected through per-user opt-in so conversations could incorporate authorized enterprise data and cite sources in their answers.

• –Solution architecture and end-to-end delivery of the entire RAG integration
• –Connected enterprise knowledge sources with per-user consent and access protection aligned with each user's permissions
• –Automated scheduled cloud indexing, close coordination with internal IT, and documentation
• –Retrieval pipeline with Elasticsearch and source-cited answers in Next.js — production-ready, rollout still pending at project end

A B2B academy for e-commerce education wanted to rebuild its website. Course offerings, mentor profiles, and editorial pages had to be maintainable without developer involvement. The rebuild started from an initial UI scaffold and had to become production-ready on a modern headless stack.

• –Full-stack delivery from architecture through deployment
• –Headless CMS with a modular page builder and editor-maintainable content (courses, mentors, pages), with live preview
• –SEO infrastructure (metadata, sitemap, image optimization, redirects) and deployment including CI/CD and database migrations
• –Production-ready handoff; public launch planned after the project ended

A major German publisher needed a modern replacement for a legacy system. The new platform had to serve multiple publishing imprints, handle personal data under GDPR, and integrate into the client's composable headless ecosystem (Contentful, Next.js).

• –Technical consulting and implementation for replacing a legacy PHP system with a giveaway and voting platform for multiple publishing brands
• –GDPR-compliant processing of personal data with field-level encryption and role-based access control
• –Major-version and hosting migration ahead of go-live (Payload v2 → v3, new hosting)
• –Monitoring, dependency updates, and ongoing remediation of security vulnerabilities in production

Multi-channel content platform serving a Next.js website and a React Native app via a unified GraphQL API. Neos CMS as headless content hub — a use case at the edge of what the ecosystem supported. 2.5 years in production.

• –Lead CMS Backend Developer and technical point of contact for the app, web, and API teams
• –Co-developed a custom GraphQL API as a single interface for web and app
• –Multi-level caching with proactive revalidation for reliable, high-performance delivery under load
• –Platform engineering in production (scaling, monitoring, major upgrades) — 2.5 years stable in production

Responsive relaunch of the website of HTW Berlin, Berlin's largest university of applied sciences. The website, grown over years, moved to a responsive, component-based frontend that editors maintain through TYPO3. My bachelor's thesis, “Responsive Web Design for the HTW Berlin website,” provided the methodological foundation for the relaunch and led to a one-year project position.

• –Web developer on a one-year frontend project focused on frontend architecture in the TYPO3 context
• –Modular component system using Atomic Design with Pattern Lab as a living style guide — the bridge between design and TYPO3
• –Evaluated the frontend stack; theming and responsive layouts in preparation for the CMS integration
• –Iterative design-to-code workflow in close collaboration with the designer and editorial team

Website and editorial system for a Berlin film collective hosting regular screenings.

• –Website concept and design, plus end-to-end delivery of the frontend, CMS, and deployment
• –Editorial data model with connected collections for films, directors, events, festivals, venues, and strands
• –Automatic date-based classification of past events and festivals into a shared archive
• –Extended CMS preview mode that displays and optionally marks drafts, unpublished changes, and non-public content blocks directly in the page layout
• –Brevo newsletter integration with double opt-in, confirmation page, and bot protection
• –Draft/publish workflows, live preview, and targeted cache revalidation

Transnational web platform for a documentary and education initiative on migration and belonging (Berlin / New York).

• –End-to-end delivery from architecture and the WordPress backend through the custom theme
• –Video archive with Isotope filtering and a custom modal player
• –Timelines as interactive historical resources for US and German content, each in two languages
• –Vimeo API integration for restricted content and uploads by contributors
• –Integration of educator resources and event publishing
• –Long-term involvement across multiple iterations: The data foundation evolved from Google Sheets through Google Fusion Tables to WordPress/Pods, with design and features developed in parallel