I will diagnose, fix or extend your n8n workflow automation

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andy8925
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andy8925
Andreas Koester

About this gig

Wrong output, a failing node or a workflow that needs a small extension? I investigate n8n issues using your export, error details and anonymised examples.


Basic is a bounded diagnosis: one reported issue in one workflow, up to 60 minutes of investigation, a written finding and a proposed repair scope. It does NOT include an unknown complete repair. If the cause cannot be confirmed within that limit, you receive the checks performed, blockers and next steps.


Standard fixes one pre-reviewed reproducible mapping, validation or configuration issue. Premium repairs or extends one pre-reviewed flow with up to two related changes and at most one additional supported integration.


Repair deliveries include a corrected export, before/after evidence and setup notes. Work starts on a copy or test environment. I use AI-assisted development and check the result. External fees, server setup and major redesigns are separate. Revisions cover the agreed scope; delivery defects reported within 7 days are corrected.


Communication and written handover in English or German.

Get to know Andreas Koester

Andreas Koester

n8n workflows, AI automation and digital tools

  • FromThailand
  • Member sinceMay 2025
  • Languages

    German, English
I build n8n workflows, business automations, API integrations and AI agents. My own projects since 2024 include Python/JavaScript scripting, Windows tools, mini-apps, e-commerce and dropshipping. Since 2023, I have worked on social media content, video/animation and AI voiceovers. I use AI-assisted development and personally test my work. A state-certified engineer, I also bring 10 years of automotive engine R&D at FEV GmbH, Aachen. Based in Thailand. German native; English fluent. Clear scope, workflow troubleshooting and practical handover.