# Digital services, built and run. I build and operate websites, data pipelines, and AI applications — from the first line of code to a running system in the cloud. **Web · Data · AI · Operations** Strategy & advisory: [andreasrieger.com](https://www.andreasrieger.com) --- I have worked at the intersection of marketing, data, and IT for over 25 years. rieger.digital is the delivery side of that work: concrete digital products and services that I design, build, and keep running myself. No framework zoo, no buzzwords — proven technology, cleanly deployed, and measurable from day one. --- ## Services ### Web & Platforms Websites, landing pages, and portals — static or dynamic, fast and maintainable. Hugo · Astro · Tailwind · Netlify · Cloud Run ### Data & Analytics Tracking and server-side tagging, Search Console and BigQuery pipelines, reporting you can rely on. GTM server-side · BigQuery · Python · SQLite ### AI & Automation LLM applications, retrieval-augmented generation, on-prem agents, and workflow automation. Ollama · Qdrant · LangChain · OpenAI-compatible APIs ### Operations & Cloud Deployment, APIs, and monitoring — the solution doesn't just run locally, it runs in production. Google Cloud Run · GCP · Netlify · Docker --- ## Selected work ### a11yscore — Accessibility as a measurable value A scanner that checks any URL against WCAG 2.1 AA — as a REST API and as a conversational web app with a structured report of violations, warnings, and passed checks. Stack: axe-core, Playwright, Cloud Run, Firestore, Next.js ### EuroCAPTCHA — Bot protection without depending on US platforms A proof-of-work CAPTCHA based on quadratic residues over a Woodall prime — fast to verify on the server, tunably expensive on the client. Plus a SaaS shop with Stripe subscriptions and API key management. Stack: Node, Web Worker, Cloud Run, Laravel, Stripe ### Server-side tagging — Tracking that holds up against the browser Building a GTM server container against data loss from ad blockers, ITP, and short cookie lifetimes — alongside a German-language content site on the topic. Stack: GTM server-side, Hugo, Tailwind, Netlify ### Search Console analytics — SEO data beyond the UI limit Pipelines that tap the Google Search Console bulk export in BigQuery and mirror it into SQLite — for keyword and URL analysis and cross-domain comparison. Stack: Search Console bulk export, BigQuery, Python, SQLite ### On-prem LLMs — AI that never leaves the building RAG and SQL agents that run entirely on-premises — document search and natural-language database queries without a single external API call. Stack: Ollama, Qdrant, LangChain, SQLite ### Static-site platforms — Fast sites that machines can read too Multilingual static websites with a build pipeline, plus Markdown mirrors and llms.txt for discoverability by AI systems. Stack: Hugo, Astro, Tailwind, Netlify --- ## Approach Technology is a means, not an end. 1. **Small, shippable steps** — something usable early beats something perfect late. 2. **Standard tech over a framework zoo** — tools that are still maintainable in five years. 3. **Measurable from day one** — tracking, logs, and reports belong in the first version. 4. **Operations built in** — deployment, monitoring, and cost are part of the solution. --- ## Contact A project that wants to be built and run? Get in touch. - E-mail: [andreas@rieger.digital](mailto:andreas@rieger.digital) - LinkedIn: [linkedin.com/in/andreasrieger](https://www.linkedin.com/in/andreasrieger) - GitHub: [github.com/andreasrieger](https://github.com/andreasrieger) ## Also available in - German: [rieger.digital](https://rieger.digital/)