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# An Opinionated Guide to Bulletproof APIs


- **Date:** Friday, Jul 10, 2026
- **Time:** 09:00–09:30 (30 min)
- **Room:** Stage 7
- **Event:** World Congress 2026 Europe

## Recording

[Watch recording](https://www.wearedevelopers.com/videos/100182-an-opinionated-guide-to-bulletproof-apis)

## Description

Writing a "Hello World" endpoint is easy. But building an API that is secure, observable, and capable of evolving without breaking every client? That’s where the real engineering happens. We often pollute our business logic with validation, security checks, and boilerplate, creating a maintenance nightmare.

It’s time to clean up our act. In this session, we’ll move beyond basic CRUD to explore 5 essential patterns for building production-grade APIs. 

The code examples will be in Java and we will combine standard Jakarta EE/MicroProfile features with powerful custom implementations to tackle the cross-cutting concerns that matter most. However, the concepts can be applied to other programming languages as well.

## Speaker

### [Rustam Mehmandarov](https://www.wearedevelopers.com/@rustam-mehmandarov)

Principal Engineer and Cloud Lead at MILES


## Related talks at this congress

- [Rest API Antipatterns](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1224-rest-api) — Wekoslav Stefanovski
- [Java Sucks (So C# Didn't Have To)](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1305-java-sucks-so-c-didn) — Adele Carpenter
- [REST, GraphQL, gRPC, and more: A comparison of modern API styles](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1278-rest-graphql-grpc) — Florian Bader
- [Rust in the Real World: Adoption, Migration, and Tradeoffs](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1156-rust-in-the-real) — Vitaly Bragilevsky