Developer-first SaaS API for EU VAT validation via VIES with Redis caching, change monitoring, and webhook notifications.
Iuriiย Connects: API & Integrations
Connect your systems โ CRMs, ERPs, payment gateways, logistics providers. I've integrated with 32+ markets and dozens of external platforms.
Based in Finland (UTC+2) ยท VAT-registered FI29845875 ยท Respond within 24 hours
Recent client work
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Our sales team was copying leads from the website into HubSpot by hand and things were falling through the cracks. Iurii built a proper integration that pushes every form submission straight into the CRM with the right owner and tags, and set up webhooks so status changes flow back to us automatically. He handled the edge cases I hadn't even thought about โ duplicate contacts, API rate limits, retries when HubSpot is briefly down. It just works, which is exactly what I wanted.
Ingrid Solberg ๐ณ๐ด
Operations Manager
Services
Your tools don't talk to each other. Orders come in through your shop but someone still copies them into the CRM manually. The warehouse system is its own island. Reports are assembled by hand every Monday morning.
I build the connective tissue between your systems โ reliable, well-tested, and observable. When something breaks (and something always does), you know about it before your customers do.
I've integrated with Stripe, Zoho CRM, Airtable, custom ERPs, logistics APIs, government VAT services, and dozens of other platforms. I know how to read poor documentation, deal with rate limits, and build retry logic that actually works.
What's included
- REST and GraphQL API design and implementation
- Stripe, Zoho CRM, Airtable, ERP integrations
- Webhooks, event queues, and real-time data sync
- OAuth 2.0 and API key authentication flows
- Rate limiting, retry logic, and error alerting
- API documentation
How I approach this
01
Audit the landscape
Understand every system involved: APIs, auth methods, data formats, rate limits, failure modes.
02
Design the contract
Define exactly what data flows where, in what format, on what triggers. Agree before building.
03
Build with resilience
Every integration is built to handle failures gracefully: retries, dead-letter queues, alerting.
04
Monitor in production
Integrations are only as good as their observability. Logging and alerting built in from the start.
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More API & Integrations reviews
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We picked vatnode for our B2B billing flow and asked Iurii to help us integrate it properly. He wired up the validation calls in our checkout, set up the webhook for VAT status changes, and walked us through the edge cases โ what to do when a customer's VAT registration is suspended mid-contract, how to handle VIES outages without blocking the order. The whole integration was production-ready in a few days. Two months in, the webhook has already flagged a customer whose VAT got suspended, which would have meant invoices we couldn't legally issue. Solid work.
Mฤrtiลลก Liepa ๐ฑ๐ป
CTO
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We needed to switch from a legacy payment gateway to Stripe Billing without disrupting around two thousand active subscriptions. Iurii mapped out the migration in a way that didn't require any downtime, ran the cutover during a quiet window, and stayed online for the next 48 hours in case something broke. Nothing did. The level of preparation was the difference โ he had a rollback plan for every step, which I don't usually see from contractors.
Sofia Marttinen ๐ซ๐ฎ
Product Manager
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