Lightnews — Scholar-powered news

Cyril Mottier @cyrilmottier.com · 20h

Jeudi 16 octobre à 12h, je serai en direct avec Mathias de The Product Crew (TPC pour les intimes) pour parler engineering et produit ! Hâte d’échanger avec vous et de répondre à vos questions. À très vite !

2

Cyril Mottier @cyrilmottier.com · 1d

Thanks for the clarification. Our experience shows it's actually not a problem anymore thanks to large context windows and new rising features like context editing as the context grows.

1 1

Cyril Mottier @cyrilmottier.com · 1d

We built a custom animatable, collision-aware, collapsible annotation system on Google Maps. Huge UX improvement but we lost tilt support along the way.
We finally cracked the math and extended our projection calculations adding a whole new dimension to the map. Just gorgeous.

5

Cyril Mottier @cyrilmottier.com · 1d

Not sure I get your question. Can you elaborate please?

1

Cyril Mottier @cyrilmottier.com · 1d

In the age of AI agents, a monorepo isn’t just a dev setup. It’s a competitive edge. Everything in one place means agents can explore, analyze, and act across your entire codebase, seamlessly.

1 2

Reposted by Cyril Mottier

Meta Open Source @metaopensource.bsky.social · 2d

🚀 Introducing OpenZL, a new #opensource, format-aware compression framework!

It uses a unique “graph model” for compression, enabling modular, high-performance codecs and a universal decoder - perfect for structured data at scale

Link: https://loom.ly/z09xoNw

#DataCompression

Introducing OpenZL: An Open Source Format-Aware Compression Framework

engineering.fb.com

2 6

Cyril Mottier @cyrilmottier.com · 5d

But it excels at:

🥇 Reviewing PRs & catching subtle bugs
🥈 Code archeology finding commits that introduced regressions or deep behaviors
🥉 Large-scale codebase refactors

AI as a force multiplier, not a replacement. 2/2

1 2

Cyril Mottier @cyrilmottier.com · 5d

Software engineering is evolving fast thanks to AI. At amo, we built a team dedicated to leveraging AI across our stack. Our experience so far is pretty clear. AI isn’t (yet) great at building features to our craft standards. 1/2

1 2 1

Cyril Mottier @cyrilmottier.com · 7d

Great animations should always add value. But if they also bring delight, that’s a win 🏆. Instead of a generic 'Search', explicitly specify what’s searchable and animate each character individually. It subtly guides users, catches the eye, and feels uniquely crafted.

4

Cyril Mottier @cyrilmottier.com · 8d

One of the most underrated parts of my job is "chaos management". Turning disorder into order, and slowing down entropy before it speeds up. It’s the invisible work that keeps everything running smoothly.

2

Cyril Mottier @cyrilmottier.com · 9d

Just received "Code Health Guardian" today. Can't wait to go through it 😋

1

Cyril Mottier @cyrilmottier.com · 11d

Didn't look at it so much actually. We are memory bound but not because of KSP. Because of Bazel, Rustc, Gradle and Kotlinc and co running in parallel.

1

Cyril Mottier @cyrilmottier.com · 12d

No it's also at least 30% better

1

Cyril Mottier @cyrilmottier.com · 12d

Well not as bad as I would have expected

BUILD SUCCESSFUL in 1m 46s
4816 actionable tasks: 4816 executed

1

Cyril Mottier @cyrilmottier.com · 12d

Sorry but I'm not going to run this command. It's definitely going to take more than 12s 😅

2

Cyril Mottier @cyrilmottier.com · 12d

We already had incremental compilation in the single-digit seconds range, but I’m still blown away by how much faster it is now that the entire codebase is fully on Metro. 🤯

github.com/ZacSweers/me...

1 3 14

Cyril Mottier @cyrilmottier.com · 13d

Wrong Pierre-Yves I guess 😅. 👋 @p-y.wtf
Have fun guys!

1 3

Cyril Mottier @cyrilmottier.com · 13d

Building this was a blast: real-time infrastructure, Bézier paths, custom brushes, and a dash of math magic. Product engineering at its finest! 🧑‍🍳

1 1

Cyril Mottier @cyrilmottier.com · 13d

Ever wish you could see what your friends are up to? Even when they’re off-screen? With sticky pins in Bump by amo, you can now spot friends typing in chat or sending super sends, no matter where they are on the map. ✨

1 3

Cyril Mottier @cyrilmottier.com · 16d

🪦 Android Instant Apps 🪦
2016 - 2025
R.I.P.

1 10

Cyril Mottier @cyrilmottier.com · 16d

There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies and the other way is to make it so complicated that there are no obvious deficiencies.

– Tony Hoare

5

Cyril Mottier @cyrilmottier.com · 22d

I’ve spent my entire career in startups. Why?

• I build things, not just org charts.
• I move at 10x speed, no alignment meetings required.
• I’m a generalist, not a cog in a machine.
• My impact > my title.

8

Cyril Mottier @cyrilmottier.com · 23d

Interviewing engineers is like watching kids play with blocks:

• Some struggle with Duplos.
• Some follow the manual.
• Some build castles from thin air.

2

Cyril Mottier @cyrilmottier.com · 26d

The agenda, the content, the library

2

Reposted by Cyril Mottier

Zac Sweers @zacsweers.dev · 26d

Here are the slides for the "Navigating Dependency Injection with Metro" talk I just gave at DroidKaigi. Great conference and super well-organized.

speakerdeck.com/zacsweers/na...

Navigating Dependency Injection with Metro

Metro is yet another compile-time dependency injection framework. How is this one different though? In this talk we’ll explore how it balances blazing-f…

speakerdeck.com

1 3 27