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Iurii Rogulia, senior full-stack software engineer. Professionally building software since 2001.

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Lappeenranta, Finland 🇫🇮

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Iurii Uses: #Migration

3 articles · 1 review

Articles

Stripe to Mollie Migration: What Actually Breaks
June 26, 2026· 21 min
Stripe to Mollie Migration: What Actually Breaks

Stripe to Mollie migration in production: mandates instead of Subscriptions, thin webhooks, no proration, no portal, no Tax. What you rebuild yourself.

Stack

Next.jsTypeScriptNode.js

Libraries

Drizzle

Databases

PostgreSQL

Services

StripeMollie

Topics

BillingPaymentsSubscriptionsMigrationVAT
HubSpot to Custom CRM Migration: When It's Worth It
June 17, 2026· 23 min
HubSpot to Custom CRM Migration: When It's Worth It

Migrating from HubSpot to a custom CRM: pre-migration sampling, data export gaps, integration cutover, and what breaks in week two. Practical guide.

Topics

CRMMigrationHubSpotOperationsArchitecturePractical
Next.js 16 proxy.ts Migration: From middleware.ts
April 10, 2026· 10 min
Next.js 16 proxy.ts Migration: From middleware.ts

Migrate middleware.ts to proxy.ts in Next.js 16 without breaking auth.

Stack

Next.jsTypeScript

Topics

SecurityMigrationArchitecture

Reviews

“

We needed to switch from a legacy payment gateway to Stripe Billing without disrupting around two thousand active subscriptions.

Sofia Marttinen 🇫🇮

Product Manager

Services

Stripe

Topics

PaymentsMigration

Service: api integrations

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