> Markdown version of [/videos?event=world-congress-2025&page=135](https://www.wearedevelopers.com/videos?event=world-congress-2025&page=135). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Videos

2243 videos · 24305 moments · 1256.1 hours of content

## All videos

### Making Sense of Programming Languages

Understanding compilation pipelines isn't just academic theory. Master abstract syntax trees to ditch regex hacks and build your own custom linters, parsers, and dynamic domain-specific languages.

- **Speakers:** Aleksandra Sikora
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 31:50
- [Watch](https://www.wearedevelopers.com/videos/692-making-sense-of-programming-languages)

### Modern C#: A Dive into the Community's Most Loved new Features.

Tired of object-oriented boilerplate? Discover how modern C# features like immutable records, advanced pattern matching, and explicit date types create cleaner, safer .NET applications.

- **Speakers:** Louëlla Creemers
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 27:04
- [Watch](https://www.wearedevelopers.com/videos/693-modern-c-a-dive-into-the-community-s-most-loved-new-features)

### Build Delightful Mobile Experiences with Kotlin, Realm, and Atlas Device Sync

Quit writing custom sync layers and complex conflict resolution logic. Combine Kotlin, Realm, and Atlas Device Sync to effortlessly automate your app's offline-first architecture.

- **Speakers:** Timothy Marland
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 25:08
- [Watch](https://www.wearedevelopers.com/videos/694-build-delightful-mobile-experiences-with-kotlin-realm-and-atlas-device-sync)

### Don't compromise on speedy delivery nor type-safety by choosing TypeScript

TypeScript offers far more than basic type-checking. Master its Turing-complete environment to achieve Rust-level safety and rapid full-stack delivery without complex runtime validations.

- **Speakers:** Jens Claes
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 29:44
- [Watch](https://www.wearedevelopers.com/videos/696-don-t-compromise-on-speedy-delivery-nor-type-safety-by-choosing-typescript)

### Brewing Tea over the Internet

To mock HTTP's chaotic architectural bloat, engineers drafted a joke protocol for brewing coffee. Discover the hilarious history and real networking lessons behind the "418 I'm a teapot" error.

- **Speakers:** Imran Nazar
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 23:27
- [Watch](https://www.wearedevelopers.com/videos/697-brewing-tea-over-the-internet)

### Get ready to Rustle

Switching your high-throughput microservices to Rust will drastically slash your cloud infrastructure costs. Discover how to build resilient, lightning-fast web backends without the nightmare of manual memory management.

- **Speakers:** Marco Otte-Witte
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 31:20
- [Watch](https://www.wearedevelopers.com/videos/698-get-ready-to-rustle)

### Blazor – the new SPA Framework for everyone who hates JavaScript

Sick of juggling C# backends with messy JavaScript frameworks? Blazor unifies your web stack, letting you build robust single-page applications entirely in C#.

- **Speakers:** Christian Giesswein
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 29:52
- [Watch](https://www.wearedevelopers.com/videos/699-blazor-the-new-spa-framework-for-everyone-who-hates-javascript)

### Discover .NET MAUI

Eliminate device fragmentation without sacrificing native performance. .NET MAUI lets you build true native apps for mobile and desktop from a single, unified C# codebase.

- **Speakers:** Codrina Merigo
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 30:28
- [Watch](https://www.wearedevelopers.com/videos/700-discover-net-maui)

### Vikings language, the speech of the king Vasa or today's Swedish? Text classification with ML.NET.

A model once classified Polish as Viking runes. Garbage in, garbage out. Learn to master data prep and build accurate text classifiers in C# using ML.NET.

- **Speakers:** Daniel Gaszewski
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 27:51
- [Watch](https://www.wearedevelopers.com/videos/701-vikings-language-the-speech-of-the-king-vasa-or-today-s-swedish-text-classification-with-ml-net)

### Reality and Beyond: Coding a Drone Using {Unity 3D .NET} and ChatGPT AI!

Move beyond a printed hello world and control a physical drone. Master mixed reality by combining Unity 3D, .NET, and ChatGPT to build spatial computing apps.

- **Speakers:** Zaid Zaim
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 38:28
- [Watch](https://www.wearedevelopers.com/videos/702-reality-and-beyond-coding-a-drone-using-unity-3d-net-and-chatgpt-ai)

### Mutation Testing and Fuzzing in C#

Standard code coverage is a deceptive numbers game. Expose weak unit tests by intentionally injecting mutations into your C# code. Discover how fuzzing builds truly resilient applications.

- **Speakers:** Michael Contento
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 29:28
- [Watch](https://www.wearedevelopers.com/videos/703-mutation-testing-and-fuzzing-in-c)

### Testing .NET applications a Tool box for every developer

Testing isn't just about finding bugs; it fundamentally drives developer happiness. Discover how to build a flexible .NET toolbox that transforms legacy code anxiety into deployment confidence.

- **Speakers:** Alexandre Borges
- **Event:** World Congress 2023
- **Published:** September 27, 2023
- **Duration:** 29:13
- [Watch](https://www.wearedevelopers.com/videos/704-testing-net-applications-a-tool-box-for-every-developer)

[Next page](https://www.wearedevelopers.com/videos?page=136)