Workshop - Engineering Behind Every Card Transaction

Previous Sessions

Watch the recording from Fintech DevCon 2025 where engineers and product managers from Adyen, Mbanq, KeyBank and other fintech companies participated in this workshop.

Learn More: Technical Resources

Dive deeper into payment systems engineering with comprehensive technical guides and open-source code.

📚 Technical Guides

Mastering ISO 8583 Messages with Go

Learn how to build and parse ISO 8583 messages, convert specifications into Go code, and troubleshoot real-world payment message implementations.

ISO 8583 Message Networking with Go

Understand how payment messages flow through card networks, implement asynchronous TCP connections, and build production-ready network clients.

🔧 Open Source Code

CardFlow Playground

Demo implementation of issuer and acquirer systems with sequence diagrams, Postman collections, and working examples. Everything from the workshop, open-sourced.

ISO 8583 Go Package

Production-tested library for building payment systems. Used by fintech companies worldwide for card network integrations.

ISO 8583 Connection Go Package

Go-powered ISO8583 connection handler offering advanced binary framing, message interleaving, and a robust connection pool for load distribution and seamless reconnections.

Knowledge sharing makes the entire fintech ecosystem stronger.

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