ArchitectureArchitecture
Conference40min
INTERMEDIATE

Event-Driven at Scale: Evolving Architectures with Kafka, Java, and AWS

This talk details XM’s journey scaling an event-driven architecture using Kafka, Java, Spring, and AWS. It covers tool choices, successes, pitfalls, and integration challenges, providing practical insights, real-world examples, and hard-earned lessons for building and operating large-scale event-driven systems in production environments.

Spyridon Angelopoulos
Spyridon AngelopoulosXM

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Thursday, April 23, 12:05-12:45
MC 3
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talks.description
What does it really take to scale event-driven architecture in a real-world platform? In
this talk, we’ll share how XM, a global fintech company for online trading, evolved from
simple service-to-service calls to a sprawling, event-driven ecosystem built on Kafka,
Java, Spring, and AWS.
As our systems (and headaches) grew, we tackled each new use case with a different
combination of tools, from Spring Kafka and Kafka Streams to Flink, Lambdas, and
Kafka Connect. We’ll walk through what drove each choice, what paid off, what
backfired, and how we wired everything together into something that actually runs in
production.
Expect a practical, experience-based look at building and operating event-driven
systems at scale. You’ll see real-world topologies, lessons we learned the hard way, and
the kind of tips we wish someone had told us earlier.
production
event-driven
scaling
kafka
talks.speakers
Spyridon Angelopoulos

Spyridon Angelopoulos

XM

Greece

Spyros Angelopoulos is an Expert Architect at XM, working on the design and evolution of large-scale backend systems in the fintech space.

With over a decade of experience in Java, Spring, and cloud-native development, he has designed and delivered resilient, event-driven platforms that power critical trading infrastructure.

He is hands-on with microservices, Kafka, Kubernetes, and AWS — and occasionally even writes code that works on the first try.

He focuses on building scalable systems that hold up in real-world production environments.

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