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flitzrrr merged 1 commit into from
May 30, 2026
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refactor(profile): anonymize portfolio and modernize org profile #2

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61 changes: 34 additions & 27 deletions profile/README.md
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Original file line number Diff line number Diff line change
@@ -1,27 +1,32 @@
<img src="https://capsule-render.vercel.app/api?type=rect&color=0:0d1117,50:101827,100:0052cc&height=120&text=Digital%20Product%20Engineering&fontSize=28&fontColor=e6edf3&fontAlignY=42&desc=Platforms%20%C2%B7%20AI%20Tooling%20%C2%B7%20Cross-Platform%20Apps&descSize=14&descColor=8b949e&descAlignY=70" width="100%" />
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://capsule-render.vercel.app/api?type=rect&color=0:0d1117,50:101827,100:0052cc&height=130&text=Digital%20Product%20Engineering&fontSize=30&fontColor=e6edf3&fontAlignY=42&desc=Platforms%20%C2%B7%20AI%20Tooling%20%C2%B7%20Cross-Platform%20Apps&descSize=15&descColor=8b949e&descAlignY=72">
<img alt="klein.business — Digital Product Engineering: Platforms, AI Tooling, Cross-Platform Apps" src="https://capsule-render.vercel.app/api?type=rect&color=0:f6f8fa,50:dbeafe,100:0052cc&height=130&text=Digital%20Product%20Engineering&fontSize=30&fontColor=0d1117&fontAlignY=42&desc=Platforms%20%C2%B7%20AI%20Tooling%20%C2%B7%20Cross-Platform%20Apps&descSize=15&descColor=475569&descAlignY=72" width="100%">
</picture>

<div align="center">

[![Website](https://img.shields.io/badge/klein.business-0052cc?style=for-the-badge&logoColor=white)](https://klein.business)
&nbsp;
[![LinkedIn](https://img.shields.io/badge/LinkedIn-0A66C2?style=for-the-badge&logo=linkedin&logoColor=white)](https://www.linkedin.com/company/klein-business)
&nbsp;
[![Email](https://img.shields.io/badge/Contact-D14836?style=for-the-badge&logo=maildotru&logoColor=white)](mailto:contact@klein.business)

</div>

---

We build cross-platform applications, scalable web platforms, and AI-driven tools.
Small team, opinionated stack, production-grade output.
We design and ship cross-platform applications, scalable web platforms, and
AI-driven tools. Small team, opinionated stack, production-grade output.

### What We Do

| 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. |
| **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 and Data Products** | Content pipelines, data enrichment platforms, web scraping infrastructure, and agent-based automation. |
| **Enterprise Modernization** | Migrating legacy systems to modern architectures -- from mainframe PL/I-to-Java rewrites to desktop-to-web transformations with ERP integration. |
| **Scheduling and Workflow** | Constraint-based scheduling platforms for multi-location service providers with drag-and-drop interfaces. |
| **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. |

### Stack

Expand All @@ -38,15 +43,13 @@ Small team, opinionated stack, production-grade output.
![Go](https://img.shields.io/badge/Go-00ADD8?style=flat-square&logo=go&logoColor=white)
![Kotlin](https://img.shields.io/badge/Kotlin-7F52FF?style=flat-square&logo=kotlin&logoColor=white)
![Java](https://img.shields.io/badge/Java-437291?style=flat-square&logo=openjdk&logoColor=white)
![PL/I](https://img.shields.io/badge/PL%2FI-005A9C?style=flat-square&logoColor=white)
![C%23](https://img.shields.io/badge/C%23-512BD4?style=flat-square&logo=dotnet&logoColor=white)

</td>
<td valign="top" width="33%">

**Frameworks**

![Next.js](https://img.shields.io/badge/Next.js-000000?style=flat-square&logo=next.js&logoColor=white)
![Next.js](https://img.shields.io/badge/Next.js-000000?style=flat-square&logo=nextdotjs&logoColor=white)
![SvelteKit](https://img.shields.io/badge/SvelteKit-FF3E00?style=flat-square&logo=svelte&logoColor=white)
![React](https://img.shields.io/badge/React-61DAFB?style=flat-square&logo=react&logoColor=black)
![Flutter](https://img.shields.io/badge/Flutter-02569B?style=flat-square&logo=flutter&logoColor=white)
Expand Down Expand Up @@ -74,49 +77,52 @@ Small team, opinionated stack, production-grade output.
</tr>
</table>

### Portfolio
### Capabilities

> Representative engagements, described generically. We don't publish client
> names or confidential project details.

<details open>
<summary><strong>Consumer Products</strong></summary>
<br>

| Product | Description | Platforms |
| Capability | What it involves | Platforms |
|:---|:---|:---|
| **TV VPN Client** | Native VPN application built for the 10-foot experience -- D-Pad navigation, WireGuard tunneling, streaming-optimized server selection | Apple TV, Android TV, Fire TV, Tizen, webOS |
| **AI Content Tool** | Video-to-social-content pipeline: transcription, caption generation, hashtag analysis, multi-platform export | iOS, Android, Windows, Web |
| **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 |

</details>

<details open>
<summary><strong>Enterprise and Commerce</strong></summary>
<summary><strong>Enterprise &amp; Commerce</strong></summary>
<br>

| Project | Solution | Stack |
| Capability | What it involves | Stack |
|:---|:---|:---|
| **E-Commerce Relaunch** | Product catalog with OCR-based data import, automated PDF scraping, and review management | SvelteKit, Supabase, Python, Cloudflare |
| **Enterprise Platform** | Legacy desktop replacement with bidirectional ERP sync, order management, and offline-capable PWA | Next.js, React, TypeScript, Azure |
| **Mainframe Migration** | PL/I-to-Java 21 rewrite of banking batch processing on DB2 z/OS with dual-track facade architecture | Java 21, Jakarta EE, Maven, DB2 |
| **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 |

</details>

<details open>
<summary><strong>SaaS and Data Products</strong></summary>
<summary><strong>SaaS &amp; Data Products</strong></summary>
<br>

| Product | Description | Stack |
| Capability | What it involves | Stack |
|:---|:---|:---|
| **Data Enrichment Platform** | Registry scraping, lead generation, and outreach automation for business data | Python, FastAPI, Next.js, PostgreSQL, Redis |
| **Scheduling Platform** | Constraint-based appointment scheduling for multi-location service providers with drag-and-drop UI | Next.js, TypeScript, Prisma, Tailwind |
| **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 |

</details>

<details open>
<summary><strong>Research</strong></summary>
<br>

| Project | Description | Stack |
| Capability | What it involves | Stack |
|:---|:---|:---|
| **Agentic Bench** | Evaluation framework for AI coding agents on real-world engineering tasks from our own projects | Python, Docker |
| **Agent evaluation** | Benchmarking frameworks for AI coding agents on real-world engineering tasks | Python, Docker |

</details>

Expand All @@ -126,10 +132,11 @@ Small team, opinionated stack, production-grade output.

We publish select libraries and tools. Contributions welcome.

See our [contributing guidelines](https://github.com/klein-business/.github/blob/main/CONTRIBUTING.md) and [security policy](https://github.com/klein-business/.github/blob/main/SECURITY.md).
See our [contributing guidelines](https://github.com/klein-business/.github/blob/main/CONTRIBUTING.md)
and [security policy](https://github.com/klein-business/.github/blob/main/SECURITY.md).

---

<div align="center">
<sub>klein.business</sub>
<sub>klein.business — Munich, Germany</sub>
</div>