invocation.io

Case studies

The work, with the numbers attached

Payment migrations processing hundreds of millions, marketplaces built from an empty repository, and platforms still running years after launch.

Babbel

EdTech

Migrating millions in recurring revenue with zero downtime

Adyen → Stripe migration of Babbel's recurring billing — hundreds of millions in revenue, zero downtime.

$100M+recurring revenue migrated

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GigSocial

Social Commerce

Building a complete influencer marketplace from scratch

Two-sided creator marketplace with escrow, wallets, and global payouts — zero to thousands of transactions monthly.

1000smonthly transactions

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eifas Licensing GmbH

FinTech

Modernizing a legacy fintech platform without stopping it

Led the AngularJS → React modernization of a live accounting platform — 100% uptime throughout.

100%uptime during migration

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Sponsored

Digital Advertising

A self-serve advertising marketplace for podcasters

Two-sided podcast advertising marketplace with Stripe Connect — shipped to production on schedule.

On timeproduction launch

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Pissup Tours

Travel & Hospitality

A booking engine with a shared wallet for group travel

Travel booking engine plus a group dashboard with shared wallets for splitting trip costs.

Multi-marketEuropean coverage

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eSalon.rs

Beauty & Wellness

A modern SaaS for salon appointment scheduling

Real-time salon booking PWA — multi-location scheduling, push reminders, business analytics.

PWAinstallable app

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Every one of these projects started with a short conversation about a problem.

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