Posted Jan 20, 2026
Building a FinTech — 22+ PSPs, 35+ Brands across 18+ countries
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Jul 1, 2022 - Aug 1, 2023

MishiPay

Building a FinTech — 22+ PSPs, 35+ Brands across 18+ countries
Background
FinTech @ MishiPay
The Operational Challenges
PSPs not compatible with the market
Market not compatible with PSPs
Local Laws
The Monopoly Tax
Abyss Engineered PSPs
The Technical Challenges
Integrating distinct systems
Isolation in unity
Decoupling heavily coupled systems
Phygital difficulties
The Technical Architecture of the FinTech
Payments System of Microservices
Isolation
Control
OOP’ing
MongoDB Database
Scaling the FinTech
Scaling for Usage
Scaling for Performance
Scaling Observability
Scaling Availability
Payments: Event-driven
High-performance event-driven design
Mitigating monstrous risk of cascading failure