We design and ship cross-platform applications, scalable web platforms, and AI-driven tools. Small team, opinionated stack, production-grade output.
| Domain | Description |
|---|---|
| Cross-Platform Apps | Native-quality applications for iOS, Android, smart TV (Apple TV, Android TV, Fire TV, Tizen, webOS), and desktop — built with Flutter, SwiftUI, and Jetpack Compose. |
| Web Platforms | Server-rendered web applications, e-commerce systems, and SaaS products on Next.js and SvelteKit. |
| AI & Data Products | Content pipelines, data enrichment, and agent-based automation — from ingestion to production delivery. |
| Legacy Modernization | Migrating legacy systems to modern architectures — mainframe batch processing to JVM platforms, desktop applications to web. |
| Scheduling & Workflow | Constraint-based scheduling platforms for multi-location service providers with drag-and-drop interfaces. |
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Representative engagements, described generically. We don't publish client names or confidential project details.
Consumer Products
| Capability | What it involves | Platforms |
|---|---|---|
| 10-foot TV experience | Native connectivity and streaming apps built for D-Pad navigation and living-room UX | Apple TV, Android TV, Fire TV, Tizen, webOS |
| AI content pipelines | Media-to-content workflows: transcription, caption generation, multi-platform export | iOS, Android, Desktop, Web |
Enterprise & Commerce
| Capability | What it involves | Stack |
|---|---|---|
| E-commerce platforms | Product catalogs with automated data ingestion and review workflows | SvelteKit, Supabase, Python, Cloudflare |
| Enterprise web platforms | Replacing legacy desktop workflows with web platforms and back-office integration | Next.js, React, TypeScript, Azure |
| Legacy mainframe modernization | Migrating batch processing from legacy mainframe stacks to modern JVM platforms | Java 21, Jakarta EE, Maven |
SaaS & Data Products
| Capability | What it involves | Stack |
|---|---|---|
| Data enrichment | Public-data aggregation, enrichment, and outreach automation | Python, FastAPI, Next.js, PostgreSQL, Redis |
| Scheduling platforms | Constraint-based appointment scheduling with drag-and-drop UI | Next.js, TypeScript, Prisma, Tailwind |
Research
| Capability | What it involves | Stack |
|---|---|---|
| Agent evaluation | Benchmarking frameworks for AI coding agents on real-world engineering tasks | Python, Docker |
We publish select libraries and tools. Contributions welcome.
See our contributing guidelines and security policy.
klein.business — Munich, Germany