weisshufer.dev

I help businesses in Germany automate what slows them down


In German, Russian, Ukrainian or English — Telegram bots, AI agents, invoice automation & IT consulting. Based in München.

Write me on Telegram

или по-русски, или auf Deutsch

> currently: München · building TGramm Retail

// what i do

🤖

Telegram Bots & Mini Apps

Custom Telegram bots and Mini Apps for retail, services, and internal automation.

🧠

AI Agents & Automation

AI-powered workflows using Claude, n8n and custom agents that work while you sleep.

🔒

GDPR-Compliant AI

AI solutions built for the German market — compliant, explainable, and safe to use.

📄

Invoice Parsing & Document Automation

Python-based parsing of complex invoices and documents. ZUGFeRD-ready.

🏢

IT Strategy & Consulting

9+ years managing IT for 90+ location retail network. I know how real business IT works.

// what i build

01
🟢LIVE

TGramm Retail

PythonAiogramReactSupabaseStripe

Multi-tenant Telegram shop platform for food businesses. Handles variable-weight products, real payment links, order management. Built for the CIS entrepreneur in Germany who still takes orders in WhatsApp.

retail.tgramm.app
02
🔵IN DEVELOPMENT

Oscar AI

PythonFastAPIRAGMistralGrafana

AI project manager that lives inside Telegram. 295 commits. 6 branches. RAG pipeline, async workers, monitoring. For distributed teams who don’t want another Notion.

03
🟡IN DEVELOPMENT

Domira

PythonHonoTypeScriptRAG

Full ecosystem for property document management with AI. RAG-powered search, Telegram bots, connectivity maps. Built for the German Immobilien market.

04
🟡IN DEVELOPMENT

StructuraBill

PythonSveltePostgreSQLDockerPlaywright

B2B invoice and supplier management platform. 117 commits. Full Playwright test coverage. Production Docker setup with Sentry monitoring.

05
EXPERIMENT

Tresor AI

PythonFastAPIspaCyMicrosoft Presidio

GDPR Privacy Shield between sensitive user data and public LLMs. Anonymizes German-language data before it hits OpenAI. Built for the German compliance reality.

06
EXPERIMENT

Amparex MCP

TypeScriptMCP Protocol

MCP server for Amparex — the leading hearing aid practice software. Built while working as IT Lead at Hörgeräte Seifert. AI models can now talk to Amparex directly.

// who i am

about.sh
1> name: Oleksii Fischer
2> location: München, Germany
3> languages: Russian, Ukrainian, German, English
4> experience: 12 years in IT
5> started_as: sysadmin (3 years)
6> grew_into: Leiter IT-Betrieb at Hörgeräte Seifert GmbH (9 years)
7> now: technical founder · building SaaS
8> repositories: 54 (and counting)
9> organizations: weisshufer-DIGITAL

I didn’t start as a founder. I started as the person who kept the servers running in a medical device company while everyone else ignored the infrastructure.

After 12 years I realized I understand both sides: what breaks in production, and what businesses actually need.

Now I build products for two worlds that rarely talk to each other: the German business infrastructure and the CIS communities living inside it.

My tools are boring and reliable. Python, React, Telegram. I don’t chase frameworks. I ship products.

// tools i trust

PythonFastAPIAiogramReactNext.jsTypeScriptSupabasePostgreSQLDockerRailwayVercelStripeTelegram APIspaCyMicrosoft PresidioMCP ProtocolGrafanaPlaywrightSentryDartFluttern8nStreamlitClaude APIMistralRedisAlembicHono

// tools & templates

Tools & Templates

Ready-made scripts, bot templates and automation tools — coming soon.

// let’s talk

Let’s talk


Have a project in mind? I’m available for freelance projects and consulting in Germany. No forms. Just write me directly.

Usually respond within a few hours · München, Germany