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Finn CoretoolFC

Finn Coretool

Founder & AI Automation Specialist

€450/day
Hamburg, DE
3-7 years
Artificial Intelligence
AI Automation
Start-up
Python
AI Agents

Average response time: 1 hour

Freelancer profile translated to English.
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About Finn

I automate what slows down small businesses daily: invoices, leads, customer communication, data pipelines. With Python, local AI models, and tools that run immediately - no concept, but results on the same day.

Background: 10 years as a self-employed craftsman (carpentry). I know the daily business from the inside - I know what's annoying, what eats up time, and what really helps.

My infrastructure runs 24/7. I deliver quickly, communicate clearly, and implement what works - not what sounds good.

  • German

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Conversational

Remote only
Primarily works remotely

Experience

  • Coretool.de
    Founder & AI Automation Specialist
    January 2025 - Today (1 year and 6 months)
    • Development and operation of a complete SaaS platform for ZUGFeRD/XRechnung (EN 16931) — from backend to deploy
    • Building a multi-agent AI architecture (Raspberry Pi + 3 local LLM nodes) for autonomous market research, lead generation, and customer communication
    • Implementation of complete email automation pipelines including QA system with local LLM (quality check before sending)
    • Lead harvesting systems for the German market: 10,000+ sole proprietor contacts researched and validated
    • Integrations: Stripe (Payments), Netlify (Deploy), Resend (Transactional Email), Home Assistant (IoT)
  • Zimmerei & Holzbau
    Self-Employed Entrepreneur
    January 2015 - January 2025 (10 years)
    • 10 years of operational self-employment in skilled trades — calculation, customer communication, subcontractor management
    • Direct practical experience with the digitalization problems of small businesses (invoicing, quotes, dunning)
    • In-depth understanding of the target group of tradespeople, which flows into all AI automation projects

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Education

  • Self-study: Python, AI Development, SaaS Architecture, GDPR Compliance
    Finn
    2026
    Selbststudium: Python, KI-Entwicklung, SaaS-Architektur, DSGVO-Compliance

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