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# Nikolai Sidiropulo
iOS engineer at Meta tying mobile performance and infrastructure to business impact.

## About

Nikolai Sidiropulo builds large-scale iOS infrastructure at Meta. He currently focuses on the Instagram app, tackling startup performance, rendering, and network efficiency for billions of users.

Mobile performance is often invisible until a user abandons a slow app. Nikolai builds systems to measure and fix exactly this. He focuses on tracking percentiles instead of averages and using abandonment curves to map latency directly to business impact.

Before Instagram, he designed privacy architectures for Meta Audience Network, led mobile projects at T-Bank, and ran the iOS engineering department at Vivid Money.


## Upcoming Sessions

### World Congress 2026 North America · September 23, 2026
San José, CA
- [How to generate business value through performance optimizations](https://www.wearedevelopers.com/events/world-congress-2026-north-america/sessions/1686-how-to-generate)





## Links

- [LinkedIn](https://www.linkedin.com/in/nsidiropulo/)