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# Oleg Šelajev
DevRel lead at AtomicJar focused on containerized integration testing.

## About

Oleg Šelajev builds developer communities and testing tools at AtomicJar. He focuses on making integration testing smoother through Testcontainers, helping engineering teams build reliable software infrastructure.

As a Java Champion and leader of the VirtualJUG, Oleg spends his time teaching developers how to handle tricky testing scenarios. His work often breaks down how to combine tools like WireMock and Testcontainers to simulate complex system dependencies and chaos engineering setups across Java, Go, and Python.



## Past Sessions

### World Congress 2024 · July 17, 2024
Berlin, Germany
- [Fake it until you `make it`. API Integration Testing with testcontainers and WireMock](https://www.wearedevelopers.com/events/world-congress-2024/sessions/451-fake-it-until-you) · 30 min