# ertli.com

> Alexander Ertli is the founder and maintainer of Contenox and designs cloud and application architecture for SaaS, ERPNext, AI/RAG products, managed-service foundations, Terraform/GitOps automation, and production operating models. Remote-first from Hamburg, Germany.

This is the curated agent-readable overview for ertli.com. Use the sitemap for the complete URL list and `llms-full.txt` for a fuller plain-text context.

## Primary pages

- [Home](https://ertli.com/): Services, engagement models, proof, FAQ, and contact.
- [German home](https://ertli.com/de/): German version of the service positioning.
- [Portfolio](https://ertli.com/portfolio/): Case studies for SaaS/PaaS products, AI runtimes, automation, and infrastructure.
- [German portfolio](https://ertli.com/de/portfolio/): German case study index.
- [About](https://ertli.com/about/): Personal statement on Contenox, local AI for engineers, explicit workflow boundaries, and avoiding professional AI lock-in.
- [German about](https://ertli.com/de/about/): German statement on Contenox and local AI for engineers.
- [CV](https://ertli.com/cv/): Professional background, experience, education, and contact details.
- [German CV](https://ertli.com/de/cv/): German professional background page.
- [Legal notice](https://ertli.com/legal/): English legal notice.
- [Impressum](https://ertli.com/de/impressum/): German legal notice.

## Portfolio

- [Open-Source AI Agent Runtime](https://ertli.com/portfolio/ai-agent-runtime/): Local-first AI agent runtime that compiles to a single Go binary and configures behaviors via versioned YAML configuration files instead of proprietary code.
- [MCP Server & Document SaaS](https://ertli.com/portfolio/ai-document-saas/): Multi-tenant SaaS platform built on an open-source AI agent runtime, adding document storage, vector search (RAG), and Model Context Protocol access.
- [TechCareer - SaaS Architecture](https://ertli.com/portfolio/techcareer/): Full-stack B2C SaaS product featuring automated CV parsing and AI-driven content generation.
- [Direktiv — Kubernetes-Native Engine](https://ertli.com/portfolio/direktiv/): Event bus optimizations and observability updates for a Kubernetes-native serverless workflow engine.
- [Multi-Tenant ERPNext Platform — Operator & Control Panel](https://ertli.com/portfolio/erpnext-platform/): Kubernetes-native provisioning platform and control plane to deploy and operate isolated ERPNext instances for B2B tenants.

## Writing

- [Blog](https://ertli.com/blog/): Short field notes on cloud products and production delivery.
- [German blog](https://ertli.com/de/blog/): German writing index.
- [SaaS, PaaS, and IDPs are platform products](https://ertli.com/blog/platform-products-saas-paas-idp/): A short note on treating SaaS platforms, PaaS layers, Kubernetes control planes, and internal developer platforms as products that need clear users, interfaces, operations, and ownership.

## Machine-readable indexes

- [Sitemap](https://ertli.com/sitemap.xml): XML sitemap for indexable URLs.
- [Robots](https://ertli.com/robots.txt): Crawl access policy.
- [Full LLM context](https://ertli.com/llms-full.txt): Expanded plain-text summary and route list.

## Contact

- [Contact section](https://ertli.com/#contact): Project inquiry form and email contact.
- [Email](mailto:alexander@contenox.com): Direct contact email.

## Optional

- [LinkedIn](https://www.linkedin.com/in/ertli/): Professional profile.
- [GitHub](https://github.com/contenox): Open source and engineering work.
- [dev.to](https://dev.to/js402): Developer writing profile.