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$
USD
I will fix your shopify API, webhook or order sync issue
Milan de Romijn
About this gig
Missing orders, failed invoice sync or duplicate processing? Let us find the cause and fix the agreed issue.
I work on existing Shopify API, webhook and order workflows, using code, Shopify Flow or n8n as appropriate.
BASIC $35: investigate one issue and deliver findings, evidence and a repair plan. No implementation; if access or a third-party outage blocks confirmation, I explain the next check.
STANDARD $95: fix one small issue approved before ordering, with a before/after test and short handover.
PREMIUM $195: the same small fix plus ONE agreed error alert or simple duplicate check.
Scope: one existing workflow, up to two systems, one direction. One revision within scope. No new app, hosting migration, bulk data correction or full rebuild.
My experience includes a working paid-invoice-to-Shopify-order integration and an Exact Online accounting tool for a paying client.
Send your two systems, expected vs actual result and a redacted error screenshot. I confirm the right package; diagnosis is not required for a clear, eligible fix. English and Dutch welcome.
Get to know Milan de Romijn
Milan de Romijn
Shopify integrations and accounting workflow automation
- FromNetherlands
- Member sinceSep 2026
Languages
Dutch, English
I connect Shopify and accounting workflows, with experience in Exact Online, WeFact and Rompslomp. I adapt to other platforms based on their APIs and integration options.
For a paying accounting-firm client, I developed a bookkeeping tool with an Exact Online integration that is now in use. My own business projects include WeFact-to-Shopify order automation.
I focus on invoice processing, data mapping, duplicate checks and clear exceptions. Start with one scoped workflow, agreed checks and practical handover. AI-assisted development, reviewed delivery.
My Portfolio
FAQ
Do I need to buy a diagnosis first?
No. Send the systems, expected vs actual result and a redacted error screenshot. If the small fix is clear, we can start with Standard. If investigation is needed, Basic provides usable findings. For the same eligible $95 repair, a $35 diagnosis leaves $60 via a custom offer.
What does one revision include?
One consolidated round within the agreed issue and acceptance test. Extra workflows or new requirements need a separate quote. Errors in my delivery are corrected against the agreed criteria.
What should I send before ordering?
Your platforms, one reproducible example and the expected outcome. Remove personal data and secrets from screenshots. If work needs access, use suitable collaborator permissions; never send your account password.
What if the issue cannot be fixed?
Basic delivers evidence, findings and the next technical step, even if missing access or a provider outage prevents confirmation. Repair packages are assessed before ordering. Unexpected blockers are discussed before scope or price changes; there is no universal fix guarantee.
Do you use AI tools?
I use AI-assisted analysis and development and review what I deliver. We agree which data and services may be used before processing customer data. Tell me before ordering about AI restrictions so we can confirm a suitable approach.
What is included in the Premium package?
One pre-approved small fix plus ONE agreed error notification OR a simple duplicate check using an existing stable reference. Includes a before/after test and handover. No database redesign, full monitoring system, historical order correction or financial posting changes.
