Corentin Kerisit @corentinanjuna Twitter profile

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Corentin Kerisit

@corentinanjuna

2 years

Feels good being back with this group of immensely talented people. Also super pumped about the stack behind what we're building at @amoamoamo

Tech stack at amo

Just friends.

amo.co

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Corentin Kerisit

@corentinanjuna

10 months

Pretty proud of this one 😊

Florian

@florianmari

10 months

That kind of stuff👌🏻 @amoamoamo

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Corentin Kerisit

@corentinanjuna

10 months

Something is cooking at @amoamoamo (thank you @bazelbuild )

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Corentin Kerisit

@corentinanjuna

10 months

Keep your friends close 🫶🚀

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Corentin Kerisit

@corentinanjuna

2 years

Paris Sunday fly over using @zenly 🥰 Special mention to the bomb squad who worked relentlessly for years and take maps to uncharted territories 🤘

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Corentin Kerisit

@corentinanjuna

9 months

Execution #2

amo

@amoamoamo

9 months

Keeping up with your friends doesn’t have to be complicated. But that’s how it feels today on other apps when updates from your crew are buried beneath brands, influencers, and videos of strangers dancing. We believe that sharing your life with your friends should be simple and

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Corentin Kerisit

@corentinanjuna

9 months

New Xmas map 🗺️🎄

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Corentin Kerisit

@corentinanjuna

2 years

This team 🤯❤️ This man 🥰🔥 That ride 🥹 @zenly = Bomb Squad 💣

Romain Dillet 🙃

@romaindillet

2 years

Some @zenly news: - The team is releasing its biggest redesign ever - It has reached 35 million active users (!) and is growing faster than Twitter and Discord (!!) - Its founder @an21m is moving on 5 years after Snap acquired Zenly Read more on TC:

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Corentin Kerisit

@corentinanjuna

4 months

Genuinely sad for anyone not in @amoamoamo this morning, and therefore not able to taste my home made “extra mile” Cantucci!

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Corentin Kerisit

@corentinanjuna

3 years

Holiday map 🌴

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Corentin Kerisit

@corentinanjuna

10 months

The things this team can do… 🥵

amo

@amoamoamo

10 months

Where did our friends go?? The bike rides. The sleepovers. Your first cigarette. Gossiping about your latest crush. Being consoled when they break your heart. Discovering a new city. Re-discovering your own (at 2AM). The hungover brunches. The tears. The laughs. The love. So

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Corentin Kerisit

@corentinanjuna

2 months

Myself and @michaeljames from @amoamoamo are in SF this week catching up with folks in consumer ! Anyone who’s here and wants to meet for a coffee or a beer ? Very happy to meet anyone in our field really :) DM me !

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Corentin Kerisit

@corentinanjuna

2 years

Last Xmas map 🎄

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Corentin Kerisit

@corentinanjuna

1 year

Thrilled to have you with us 🫶

Josh Miller

@joshm

1 year

🇫🇷 The Browser Company of Paris, Day One! P.S. I am biased but my hosts, @amoamoamo , have the coolest, most creative vision of any new co I've seen in the past five years. Go work for them if you live in Paris!

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Corentin Kerisit

@corentinanjuna

4 months

If you're not in @amoamoamo HQ, then you're missing out on my home made surprise balls of sweetness.

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Corentin Kerisit

@corentinanjuna

3 years

Xmas map🎄

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Corentin Kerisit

@corentinanjuna

1 year

Building iOS Enterprise and Store versions on the CI + running all iOS unit tests in 47s. Thank you @bazelbuild 🥹🤯

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Corentin Kerisit

@corentinanjuna

2 years

💚💎🫶😢

zenly

@zenly

2 years

february 3rd will be my last day with you 💔

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Corentin Kerisit

@corentinanjuna

6 months

Breakpointing in Rust using Xcode => ✅

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Corentin Kerisit

@corentinanjuna

1 year

Everyday life of a platform engineer, low light, hyper realistic #midjourneyv51

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Corentin Kerisit

@corentinanjuna

10 months

Pay attention to this.

Eiso Kant

@eisokant

10 months

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Corentin Kerisit

@corentinanjuna

6 months

Perfetto tracing on iOS has been of tremendous help for crafting high performance apps throughout the years! Those are release build traces on internal builds that everyone use at @amoamoamo . They are included in every bug report and can be remotely fetched.

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Corentin Kerisit

@corentinanjuna

1 year

A glimpse of the amazing journey we had at @zenly working with immensely talented professionals like @julienmartin_ (sobbing… 🥺)

Julien Martin

@julienmartin_

1 year

Thrilled to finally publish my article about Design at Zenly. I started writing in September 2022 following the shutdown announcement, so it’s been ready for a while now and there will be 3 parts. This is part 1 and it takes place from 2015 to 2017.

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Corentin Kerisit

@corentinanjuna

9 months

Starts like this

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Corentin Kerisit

@corentinanjuna

4 months

I’ve known @HugoAmsellem for more than a decade and have always been in awe of his passion and relentless drive in helping others. The kind of supporter you want by your side !

Hugo Amsellem

@HugoAmsellem

4 months

👋 Personal update, I'm launching @IntuitionVC I fall in love with people and ideas. I fell in love with the creator economy and, lately, the loneliness epidemic. But most of all, I fell in love with the extraordinary people bringing these ideas to life: Founders. To be exact,

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Corentin Kerisit

@corentinanjuna

2 years

Smiling face 😊

Antoine Martin

@an21m

2 years

The bad news: @zenly is dead. I don’t know what to use and I’m sad! I’m sure you’ll come to regret that decision @evanspiegel . Thank you everyone else for the extreme support ❤️ The good news: we’ve been working on cool new stuff with a few friends... ↓

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Corentin Kerisit

@corentinanjuna

5 months

If you’re reading this, it means a lot of you broke the first rule…

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Corentin Kerisit

@corentinanjuna

4 months

@steeve My old friend is at 88, not at 14 🤡

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Corentin Kerisit

@corentinanjuna

1 year

@Dimillian @Medium Music to my ears 🤩👏🏼 At @amoamoamo , thanks to @bazelbuild , we have this taken to the extreme as well (showing only platform modules here). Every folder is a Bazel target, dependencies are wired through a dedicated API target using DI (echoing your article on composition root).

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Corentin Kerisit

@corentinanjuna

2 years

@TurnerNovak Cheers <3 More info about the tech stack here ➡️

Tech stack at amo

Just friends.

amo.co

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Corentin Kerisit

@corentinanjuna

10 months

@steeve

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Corentin Kerisit

@corentinanjuna

3 months

The single slide in WWDC24 that got me excited (A profiler with FlameGraph included 🤯)

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Corentin Kerisit

@corentinanjuna

6 months

The simple joy of visualizing iOS profiling as FlameGraph...

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Corentin Kerisit

@corentinanjuna

9 months

Ends like this !

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Corentin Kerisit

@corentinanjuna

4 months

My esteemed and ever talented colleague Sylvain made a quick interview about the reality of using Rust for building apps backends server side and client side ! Go check it out :)

filtra.io

@_filtra

4 months

We discovered a really cool company in Paris building new social media apps in Rust! It's called amo. Checkout our interview with one of their engineers here:

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Corentin Kerisit

@corentinanjuna

5 months

@nikitabier To the founders, I know you are reading this. And I love you 😘

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Corentin Kerisit

@corentinanjuna

2 years

@steeve @zenly Felt like being on death row every year and having to come up with the ultimate best of what your brain is capable of to be able to survive (on short notice) 😰😮‍💨

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Corentin Kerisit

@corentinanjuna

6 months

This 1st principle from one of the first Google dev talk about builds 👌

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Corentin Kerisit

@corentinanjuna

5 months

monorepo current status: 30k lines of Starlark 💚😅

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Corentin Kerisit

@corentinanjuna

2 years

@Michgboxy @an21m Rust, GRPC, Protobuf, ScyllaDB, PG, Redpanda, Materialize, GCP, Bazel 🤘

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Corentin Kerisit

@corentinanjuna

4 months

Another message in a bottle thrown in the Apple radar sea...🤞

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Corentin Kerisit

@corentinanjuna

1 year

Welcome home 🏠🥰

Josh Miller

@joshm

1 year

Lil' personal life update: 🇫🇷 I'm moving to Paris – for one year – starting in September! 🇫🇷 I'll be working from @an21m 's @amoamoamo office (one of my fav crews), and living in the 6th. Anyone want to hang? Who should I meet while I'm there?!

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Corentin Kerisit

@corentinanjuna

5 months

Almost at a point where cross-language span tracing works on iOS and Android on release builds 👨🏻‍🍳👌 The nicest thing is that it's using Perfetto C++ SDK directly so most of all this comes for free... Props to the ever talented @TheLortex

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Corentin Kerisit

@corentinanjuna

2 years

@FredKSchott Reminds me of the 1M$ @zenly BigQuery dashboard cc @steeve 😬🥵

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Corentin Kerisit

@corentinanjuna

5 months

@steeve @2lr 💙

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Corentin Kerisit

@corentinanjuna

10 months

@FetchRequested @amoamoamo Friends matter most 🫶

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Corentin Kerisit

@corentinanjuna

2 years

@artman @linear Grow them internally. @zenly was able to reach absurd scale with programmers that had no such experience but strong motivation and unseen learning curve.

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Corentin Kerisit

@corentinanjuna

2 years

🤓

Antoine Martin

@an21m

2 years

So cool & humbling to see the race to build the best @zenly clone/replacement. Fun stuff coming from @snapmap @NauNau_App @joinsuperlocal @gowalla @Life360 We promised we wouldn't do it, but it's going to be really hard to sit on the sidelines for this one...

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Corentin Kerisit

@corentinanjuna

1 year

@Dimillian @krzyzanowskim 👋 @Dimillian , some elements of answer: RxSwift: - We have a lot of experience with it (Zenly was 100% RxSwift) - Facilitates similarities between iOS and Android mobile infrastructure (we use RxJava). If Android is late, they can look at the RxSwift part and be heavily inspired

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Corentin Kerisit

@corentinanjuna

10 months

@iMart1n This crazy guy deserves a shoutout 🔥😘

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Corentin Kerisit

@corentinanjuna

4 months

@steeve It’s a trivial fix for them… lldb already has that implemented. Worse case scenario I get hired at Apple, fix it myself and resign.

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Corentin Kerisit

@corentinanjuna

2 years

@quasimatt @Snap We did it for users just like you 😘

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Corentin Kerisit

@corentinanjuna

2 years

@steeve @matthieurouif @photoroom_app One regret I have at Zenly is not putting enough efforts on tech blog posts for all the crazy stuff that would have deserved one. Please do it !

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Corentin Kerisit

@corentinanjuna

1 year

@gregisenberg 😘

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Corentin Kerisit

@corentinanjuna

1 year

Ce garçon m’impressionnera toujours 😎

Steeve Morin

@steeve

1 year

J'ai passé quelques jours à bricoler LegiGPT. C'est 148k articles avec ChatGPT. Tous les Codes. L'idée est de savoir s'il possible de discuter avec la loi? Et bien oui, ça marche.

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Corentin Kerisit

@corentinanjuna

3 years

@steeve Tu ne sais pas cliquer …

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Corentin Kerisit

@corentinanjuna

1 year

@Dimillian @krzyzanowskim - It's Open Source and we don't have to wait for an OS update for bugs to corrected. - The simplicity of the Reactive Interface (onNext, onError, onComplete) makes a good standard for language interop and FFI (we codegen it).

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Corentin Kerisit

@corentinanjuna

2 years

@yim1n @zenly This man ☝️… 🙌🙌🙌

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Corentin Kerisit

@corentinanjuna

5 months

@2lr @dtrinh Favorite show ever 🥰

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Corentin Kerisit

@corentinanjuna

1 year

@tokudu Big admirer of your work while at Snap, huge loss for them ! If you ever wanted to visit/work from Paris, it’d be an honor to host you at @amoamoamo

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Corentin Kerisit

@corentinanjuna

4 months

@an21m @danielfromitaly @LucasSchiavini @amoamoamo @arcinternet @joshm @laurentdelrey My desk mate 🫶

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Corentin Kerisit

@corentinanjuna

10 months

@michaeljames @pippalamb @amoamoamo @an21m Already #1 on our user hall of fame 🙌

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Corentin Kerisit

@corentinanjuna

3 years

@matthieurouif @iRumeurs Mauvaise réponse !

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Corentin Kerisit

@corentinanjuna

8 months

@steeve @zllak @qperez42 Si ça sert de discuter… c’est toi qui a toujours raison.

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Corentin Kerisit

@corentinanjuna

1 year

@eikedrescher Android invented Instant Apps a while back that does just that. “With Google Play Instant, people can use an app or game without installing it first.” Makes you miss a bit the Android ecosystem 🥹

Google Play Instant | Platform | Android Developers

Get people to your flagship Android experience from links that would otherwise open your mobile web page — like search, social media, messaging, and other deep links — without…

developer.android.com

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Corentin Kerisit

@corentinanjuna

9 months

Goes like this

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Corentin Kerisit

@corentinanjuna

6 months

@edouardb_ Proper... 🔥

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Corentin Kerisit

@corentinanjuna

6 months

@amoamoamo An improvement we are working on is writing a Swift and Rust wrapper around the Perfetto C++ SDK instead of collecting in Swift, which would allow cross language traces collection for the same app with further reduced trace cost (<500ns).

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Corentin Kerisit

@corentinanjuna

10 months

@steeve Looks planty perfect to me 🫶

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Corentin Kerisit

@corentinanjuna

10 months

@TurnerNovak @steeve @amoamoamo The internal version name contains -alpha actually !

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Corentin Kerisit

@corentinanjuna

3 years

@twannl

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Corentin Kerisit

@corentinanjuna

3 months

Am I the only person to constantly make the mistake of clicking on "Take out of trash" ...?

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Corentin Kerisit

@corentinanjuna

1 year

@stevenhepting @Dimillian This enables us to achieve constant 10-15s feedback loop even with 300+ modules and more than 100k LoC. On top of that, Bazel enables this ->

Corentin Kerisit

@corentinanjuna

1 year

Building iOS Enterprise and Store versions on the CI + running all iOS unit tests in 47s. Thank you @bazelbuild 🥹🤯

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Corentin Kerisit

@corentinanjuna

1 year

@isEqualToDan @Dimillian Some reasons we chose to go that way: - Cross language: (our mobile app cross compiles Rust,Swift,Obj-C,C,C++) - Code sharing: The backend and the client share a lot of Rust code. - 1 Pull Request for a company wide change / refactoring. - Single CI environment

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Corentin Kerisit

@corentinanjuna

3 years

See you on the other side, slick !

Cyril Mottier

@cyrilmottier

3 years

Time for a change. After 4 busy years at Zenly, I am moving to new challenges. To the people I have grown to consider great friends and amazing colleagues: thank you!

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Corentin Kerisit

@corentinanjuna

2 years

@matthieurouif @steeve @photoroom_app @Olotiar Cards video extract ! The idea at term was to generate Flash content (user historic event) the same way and offer crazy cool videos representing users in all sort of situations.

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Corentin Kerisit

@corentinanjuna

3 months

@Dimillian My mind went 🤯 when I learned that special hardcoded "category" triggers additional logging behaviours, especially wrt OSSignposter (). Makes me wonder how the whole thing is implemented !

OSLog.Category | Apple Developer Documentation

System-defined categories that identify well-known parts of your app.

developer.apple.com

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Corentin Kerisit

@corentinanjuna

6 months

Another cool perk is that the traces can be collected locally on macOS via USB by reusing the tunnel created by Xcode for communication with the iOS device (The replacement for usbmuxd for iOS 17 devices).

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Corentin Kerisit

@corentinanjuna

2 years

@GergelyOrosz Very much enjoyed reading and suggesting on the draft at the time 😘 Hopefully we can do that again on a Volume 2 with more in depth digging ? Thanks for your brilliant work !

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Corentin Kerisit

@corentinanjuna

6 months

@amoamoamo To achieve this, we wrote a simple Swift component that has a similar API than the Perfetto C++ SDK, collects traces in memory in a RingBuffer with zero allocs (<1µs per trace) and flushes the traces in Perfetto format (.pftrace) that can be visualized by

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Corentin Kerisit

@corentinanjuna

2 years

@steeve @zenlyapp @an21m @AlexisBonillo @2lr Binôme for Life 💋

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Corentin Kerisit

@corentinanjuna

10 months

@rgaidot @steeve @amoamoamo We’re hard at it !

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Corentin Kerisit

@corentinanjuna

3 years

@eisokant I'll put you on that list then 😘

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Corentin Kerisit

@corentinanjuna

3 years

@jessica_schalz Ultimate comfort

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Corentin Kerisit

@corentinanjuna

1 year

@ios_dev_alb Type of expression is ambiguous without more context

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Corentin Kerisit

@corentinanjuna

10 months

@chiara_rndz @an21m @amoamoamo Thank you friend 🫶🫶

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Corentin Kerisit

@corentinanjuna

10 months

@gontsolov @michaeljames @amoamoamo Thanks for the kind words! Swift and Rust actually !

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Corentin Kerisit

@corentinanjuna

10 months

@TheHolyKau @amoamoamo Good find 🫶

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Corentin Kerisit

@corentinanjuna

6 months

@Dimillian TLDR: “we fucked up”

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Corentin Kerisit

@corentinanjuna

9 months

And this !

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Corentin Kerisit

@corentinanjuna

1 year

@Dimillian @krzyzanowskim We have cases of Swift Concurrency x RxSwift interop in the codebase. They are easy to bridge so if it makes sense, we do it. One important note is that we have a lot of performance tooling around Rx SchedulerType which is why we prefer to be in Rx realm as much as possible.

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Corentin Kerisit

@corentinanjuna

10 months

@yim1n @michaeljames Me neither lol. Glad to have you with us 🫶

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Corentin Kerisit

@corentinanjuna

3 years

@eisokant Energy crisis, here to last :/

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Corentin Kerisit

@corentinanjuna

3 years

@Rygu Come and help me tackle exactly this at @zenlyapp 🙏

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Corentin Kerisit

@corentinanjuna

10 months

@patloew @haenschenhans @amoamoamo Android on its way !

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Corentin Kerisit

@corentinanjuna

6 months

I’ve been hearing about this book for such a long time. Finally got myself a copy ! The only other good writing I could find on linkers was a wonderful article series by @ianlancetaylor findable here Excited 😊