Indie App Developer | Software Architect | Author

I build and ship my own software products — from idea to App Store. Mobile apps, microservice backends, Kubernetes infrastructure, and AI-powered automation. Everything designed, built, and operated by me.

20+ years in software engineering. Currently building and operating five production products as a solo founder.

AI-powered reporting and documentation for construction and field service. Upload photos or voice recordings — DokuAI transcribes, analyzes, and compiles structured reports automatically. 5 microservices, Kafka, OpenAI Whisper & Vision, PostgreSQL. Flutter app for iOS and Android. dokuai.app

AI wine recommendations from a photo. Snap a bottle or label — Sommelio extracts the wine's profile, matches it against your taste, and delivers personalized suggestions in real time. 3 microservices, Kafka, OpenAI Vision, SSE. Flutter app, 8 languages. sommelio.app

Intelligent document management for iOS. On-device OCR via Apple Vision, automatic metadata extraction, iCloud sync, and optional AI classification. Native SwiftUI app with SwiftData and CloudKit. Offline-first — no data leaves your device unless you want it to. paperlessiq.app

AI bartender for your home bar. Photograph your bottles — Pourenzo identifies what you have and generates cocktail recipes you can actually make. 3 microservices, Kafka, OpenAI Vision. Flutter app with multi-language support. pourenzo.app

AI-generated word puzzle game. Every hour, the backend creates new puzzles — GPT-4o picks words, DALL-E 3 generates visual clues, everything translated into 8 languages. Global leaderboard, streak system, offline play. Quarkus backend, PostgreSQL. Flutter app. snapshots-quiz.app

All products run on my own Kubernetes cluster with GitOps (ArgoCD), Helm-based deployments, and full observability via Prometheus and Grafana. CI/CD pipelines from commit to App Store release via GitHub Actions — no manual deploys.

The cluster is monitored and maintained by AI agents I built myself. A Claude-powered ops agent runs every hour — detecting problems, restarting services, optimizing resources, and applying fixes autonomously. A second agent runs daily to analyze infrastructure, improve Helm charts, and tune security policies. No human in the loop.

Before going indie, I spent 20 years building software in enterprise environments — microservice architectures for banks, IAM systems for regulated industries, instant payment platforms, and digital transformation in critical infrastructure (KRITIS). That experience shapes how I build today: production-first, secure by default, designed to last.

What it takes to build, ship, and operate products without a team. Decision-making under uncertainty, systems thinking, and the structural realities of working independently. Written from within the journey, not after it.

Website: marcelrgberger.com LinkedIn: linkedin.com/in/marcel-r-g-berger

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