Mathieu Calba 📎 @Mathieu_Calba
Lyon Joined June 2009-
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Another common question I’m answering working with scaling tech companies is… Q. How much of your r&d spend should be focused on platform work? A. 50%, and most teams are way off what it should be. Let me explain…🧵 (1/21)
Another common question I’m answering working with scaling tech companies is… Q. What virus infects growing engineering orgs the most? A. Layerinitis. Let me explain... 🧵 (1/27)
It's harder for Mobile engineers to progress beyond the "Senior Engineer" title than it is for backend engineers. A thread on why this is and how to get promoted beyond “terminal roles” as a mobile engineer ⬇️ First, a few examples demonstrating why this phenomenon exists:
🏔 While the Kotlin team is actively working on the new Kotlin #k2compiler, let’s take a look at the Kotlin Compiler in #KotlinFacts. Thread! 🧵
Hi there Android, iOS and Web devs — I've been cooking something up for you the past few weeks in my spare time – it's a brand new way to quickly whip up app icons (sound familiar?). Check it out at icon.kitchen
Remember you can acquire the book for FREE this month thanks to our Diamond sponsor: @snappmobile_io and @snappautomotive 💎 Grab your copy and give feedback 🙌
We need APIs / libs for reporting app behavior in production, and surfacing meaningful signals that help us monitor, surface and reproduce issues. Then only, once you can repro, do local tools become useful. Otherwise you're just poking randomly.
Moving your team from slides to long form writing is not just a process change. It is first and foremost a culture change. A writing culture values comprehension over aesthetics, nuance over certainty, clarity over charisma, deliberation over impulse, and rigor over hierarchy.
Scrum is a set of prescribed processes that optimizes for control. Kanban is a scheduling system that optimizes for flow and limits waste. Both of them help you build software incrementally. However, neither of them help you build sustainable software or sustainable teams. 1/5
As a leader, considering the many factors in our context – be it the market, competitors, customers, partners, board members, employees – is essential to us leading well. Politics is part of that context. My take on political conversations at work: kyt.tips/political
IntelliJ pro tip: Do you have another language embedded as a String? Use the language injection feature to get syntax highlighting, code completion, and error indicators. It works with most languages.
Should you share code between iOS and Android through a library? Consider a few things: 1. Custom framework & library overhead 2. Custom dev environment overhead 3. Platform difference overhead 4. How you can train, hire AND retain engineers Here's what Dropbox learned (cont'd)
Get Sony's WH-1000XM3 noise-canceling headphones for just $200 ($78 off) androidpolice.com/2021/03/10/get…
Let me try to explain how humans can vary genetically but race is a social construct in one tweet. Genetic differences are like the mountains. Race is like an international border. Borders have real consequences for us humans just like mountains but borders are social constructs.
@Signez Cela m'embête aussi cette ambiguïté. Dernièrement je me suis mis à utiliser davantage à la place de plusse. Faut que je trouve une alternative pour le plus du tout maintenant 😅.
Make boring plans by @skamille skamille.medium.com/make-boring-pl…
Olvo cherche son futur développeur principal web (Ruby on Rails) à Paris : notion.so/Offre-d-emploi… Attention, salaire modéré, mais travail passionnant dans une coopérative qui change la ville.
J’ai fait une petite application iOS qui génère des attestations de déplacement dérogatoire pour ceux qui ne veulent pas télécharger TousAntiCovid. Dispo sur TestFlight : testflight.apple.com/join/f4B80W2X
Antoine Martin @an21m
17K Followers 2K Following working on @amoamoamo with a few friends / ex ceo @zenly🍦
Antonio Leiva @leiva_dev
13K Followers 2K Following I'm Antonio Leiva. Turning AI into your ally as a developer. 🤖 Creator of @devexpert_io Write about #AI, #AndroidDev, #Kotlin, & solopreneurship. 👇
Paris Android User Gr... @ParisAndroidUG
2K Followers 414 Following La communauté des Passionnés et Professionnels Android de Paris. Conférences, réseautage, partage https://t.co/Np7MDucVDM
Jean-Baptiste Dalido @jbdalido
642 Followers 865 Following Engineering, scalability, fast motorcycles enthusiast
🤌 [email protected]... @seebrock3r
6K Followers 1K Following “It depends” 🤷♂️ A dev 🤓 who has a serious thing for yellow, 💛 design ✨, and emojis 🤌 1/2 of @codewiththeita, UXE on @androidstudio. Don't listen to me.
Jonathan Lefèvre @Jodiroga
2K Followers 168 Following Expérience client, optimisation, basket, jeux vidéo et espaces insécables. Mastodon → https://t.co/ezowT0vh3M
AndroidWeekly @androidweekly
22K Followers 286 Following Get the best Android & Kotlin development news sent directly to your inbox since 2011! #AndroidDev #AndroidWear #kotlin
Android Makers by dro... @AndroidMakersFR
6K Followers 876 Following Next edition: April 9-10 2026 • Your favorite French #AndroidDev conference 🤖🧑💻 • @ParisAndroidUG & @droidcon behind this 🤜🤛
Alexandre Gressier @_gressier
261 Followers 2K Following iOS & Android Native App Developer ✦ Entrepreneur @multiplatforge
Raph @rafjlls
282 Followers 2K Following CEO of existential crisis • Into electronics, embedded & prog music. Also, trains 🚆 • linksgerichtet • 🌈 • 🟦🌅 @saucisse.net • 🐘 @[email protected]
Ahmed Dahbi @dahbiahmed
2K Followers 3K Following vp product @photoroom_app - previously product @zenly @Criteo @Withings, founder @travelbeesapp, VC @Ventech_vc
B @bt_2044
186 Followers 1K Following
Romain 🖖 @rmnagain_
236 Followers 1K Following ✨ Designing at @Michelin ⌛ ex @RadioFrance ('25) @TagHeuer ('20), @Mention ('19) and @Fabernovel ('18) 🤷♂️ "Computer guy" for my family
Romain Filinto @thexfifix
521 Followers 3K Following Lead / Senior Software Engineering - Passionné par les nouvelles technologies 🚀 #PHP #Symfony #RoR #DDD #CQRS
Léo Darriet @leodarriet
223 Followers 968 Following Product designer @avec_alan. I like 70´s aesthetics, well crafted objects and apps. Also, I’m a nerd about roller coasters🎢, cable-cars 🚡and metro trains 🚆
Matt Rouif @matthieurouif
11K Followers 3K Following Co-founder & CEO @photoroom_app — the world leader in AI image editing for ecommerce, from side-hustlers to Amazon & DoorDash. Ex GoPro. Stanford Polytechnique
HilaryII. @5ax9YTOvyOewLjk
62 Followers 7K Following
Prodigy AI @prodigy_match
90 Followers 791 Following Upload your candidate's resume to receive the highest-fit job matches from your target market. Powered by AI magic.
Marion Aguirre @marionaguirre
393 Followers 994 Following Head of People @photoroom_app #HR #Recruiting - Back to school to study psychology 🎒
Florian @FloGz7
41 Followers 362 Following 🤖 Senior Android Developer | 💻 Kotlin Multiplatform Enthusiast | 🌐AI Explorer Sharing about mobile app development #AndroidDev #KMP #AI
Preeti @Preeti99906037
0 Followers 6 Following
Devstree IT Services ... @devstreeit
392 Followers 2K Following Data Engineering | AI/ML | Web & App | IoT From idea to execution, delivering scalable digital solutions trusted by global brands.
Marine DUGUA @DuguaMarine
86 Followers 438 Following Chargée de Recrutement @ZenikaIT 🔆 "Le plus beau métier d’homme est le métier d’unir les hommes." [Antoine de Saint-Exupéry]
KiddyProd @Kiddy_Prod
107 Followers 1K Following Young French Game Developer who has fun doing strange stuff. Github: https://t.co/AZwuqUvLiz
Gracker @Gracker_Gao
2K Followers 6K Following Android 性能工程师|独立开发者|Claude 还没被封号选手|骑行爱好者|OpenClaw 深度玩家丨 Build SmartPerfetto:https://t.co/jl7F3t5Jjb
Densi Gundaniya @DensiGundaniya
4 Followers 51 Following
Hussein Haj Mohammed @HusseinnHM
35 Followers 416 Following C# || .NET || Backend 🧑🏻💻 🛠 My NuGets : https://t.co/ZPX3vlDHXs
Achmad fathullah @Achmad_AlFath
132 Followers 694 Following Android Developer , Also focus in Hybrid Mobile development Flutter, React native ,UI/UX,Backend Technologies : NodeJs , Laravel. Future Best CTO and Husband ♥️
Ça reste ouvert @caresteouvert
565 Followers 1K Following La carte collaborative des lieux ouverts durant la crise sanitaire #Covid19 #OpenStreetMap
Aye Myat Minn @AyeMyatMinn
40 Followers 220 Following
greg @gt4hio
6 Followers 152 Following
Madalin Valceleanu @MValceleanu
107 Followers 129 Following Senior Software Engineer @Google Enthusiast and passionate about clean code, modular architecture , testing and automation 🇷🇴 - 🇪🇸 - 🇬🇧
ortis lazlo @ortislazlo
55 Followers 2K Following
Himanshu Dudhat @HimanshuDudhat
71 Followers 202 Following Freelance Software Developer | Formal CTO @GoldenmaceIT
The Programmers_JFJ @jfj_the
37 Followers 424 Following Coder, Programmer, Gamer, Geek, Online teacher, Hacker, Technology enthusiast, Motivator and more
LumApps @lumapps
1K Followers 834 Following LumApps is the future-ready Intranet for businesses that want to stay ahead.
Antonio Roa-Valverde @roa_valverde
602 Followers 2K Following #android dev ∙ mountainhopper (🥾, 🚵, 🏍) ∙ 🇪🇺
Nathan Hoskisson @NathanHos
104 Followers 781 Following Keen Cyclist 🚴♂️ Bikepacking 🌍 Triathlon 🏃 Heading up mobile recruitment @ Gravitas
Siddhivinayak @daydroider
230 Followers 2K Following Android | Machine Learning | Guitars | Metal | Psy #AndroidDev #MachineLearning #Metal
Chris Banes @chrisbanes
52K Followers 315 Following
Android Developers @AndroidDev
2.1M Followers 350 Following Get the latest Android news, best practices, live videos, demonstrations, tutorials, and more!
Find me on 🦋 : @p-... @Piwai
16K Followers 349 Following This place is owned by a Nazi, I've moved! See my username, or go to https://t.co/0FWplk8ht5
Kotlin by JetBrains @kotlin
169K Followers 1 Following Discover what’s going on in the Kotlin ecosystem | @JetBrains Video tutorials https://t.co/u8SefOyX4B News https://t.co/pvEUEI0iPX Community discussions https://t.co/f1ymehGEIq
Romain Guy @romainguy
45K Followers 515 Following Previously: Engineering Director, Android Toolkit team at Google. https://t.co/LXCDLMzNVM on Bluesky
Jorge Castillo @JorgeCastilloPr
22K Followers 1K Following Android @DisneyPlus. Formerly @X. https://t.co/h95aoNiu6J. https://t.co/3jHrI1zAJT 🐳 (sold) https://t.co/w8wtiVcbEM 🧪 https://t.co/O5IanWehsa ⛏️
Rebecca Franks @riggaroo
24K Followers 2K Following https://t.co/XeaoCZXJvN https://t.co/njcqLhFaOn 🤓 @AndroidDev Rel Eng at @Google in 🇬🇧 on #JetpackCompose 💬 Opinions are my own
Kaushik Gopal @kaushikgopal
12K Followers 1K Following · Principal Engineer @Instacart · @FragmentedCast (to Software Eng from Vibecoding) · @GoogleDevExpert
Jose Alcérreca @ppvi
11K Followers 305 Following Android Architecture and Testing - Developer Relations Engineer @ Google Not checking X anymore. Follow me on LI or BS.
🤌 [email protected]... @seebrock3r
6K Followers 1K Following “It depends” 🤷♂️ A dev 🤓 who has a serious thing for yellow, 💛 design ✨, and emojis 🤌 1/2 of @codewiththeita, UXE on @androidstudio. Don't listen to me.
Jonathan Lefèvre @Jodiroga
2K Followers 168 Following Expérience client, optimisation, basket, jeux vidéo et espaces insécables. Mastodon → https://t.co/ezowT0vh3M
Doist Developers @doistdevs
611 Followers 66 Following All things development from the @doist team, working on @todoist and @twistwork.
Dy 🌸🌈 @evowizz
5K Followers 2K Following Crafting software, shaping components & discovering hidden features 🏳️🌈🇫🇷
Francophonie Android ... @fraug_android
192 Followers 12 Following Les Android User Group s'unissent sous une seule bannière avec le #FRAUG (Francophonie Android User Group)
Sam Ruston @Sam_Ruston
2K Followers 58 Following Creator of Weather Timeline, Flamingo, BuzzKill & Bouncer. For support please press the contact support button in the app.
Manuel Vivo @manuelvicnt
16K Followers 272 Following Senior Staff Mobile Architect and Android Engineer at Super 👾 Android GDE ℹ️ Book a 1:1 with me! https://t.co/LIksGyRiPI
Roman Elizarov @relizarov
20K Followers 929 Following Software infrastructure & libs, language design, sports programming/ICPC, concurrency & algorithms, math & quantitative finance. ex-project lead for @Kotlin
Leland Richardson @intelligibabble
15K Followers 810 Following Claude Code @AnthropicAI Prev: Jetpack Compose @Google. I like learning, discussing, and diving into challenges.
Gonçalo @goncalossilva
2K Followers 197 Following Building @doist @todoist @twistwork. CTO. Programmer. Portuguese. 🇵🇹
HEY @heyhey
17K Followers 5 Following We finally fixed your Email & Calendar! Gmail, Outlook, and Apple got complacent. Then along came HEY. Follow @37signals to get the latest news about HEY.
Camille Fournier @skamille
46K Followers 795 Following Distributed systems, dysfunctional programming, and all that management gobbledegook. Author, “The Manager’s Path." she/her. https://t.co/Uk9L1X9GeE
@vnrherzog.bsky.socia... @VnrHerzog
14K Followers 1 Following Fréquenter un RS aux mains d'un fasciste fait partie du problème, ce compte est fermé. Je ne serai plus complice. https://t.co/mcm8dTTJ85
Twist @TwistWork
7K Followers 1K Following Async messaging for teams burned out by real-time chat, video calls, and email • #WorkAsyncNotASAP • by @Doist • Status updates: @TwistStatus
@[email protected]... @_mboudraa
307 Followers 495 Following Android Software Craftsman and Kotlin enthusiast
Festival Lumière @FestLumiere
19K Followers 2K Following Le festival Lumière est un rendez-vous mondial dédié au cinéma ✨ 📅 Du 11 au 19 octobre 2025
Claire Lew @clairejlew
12K Followers 95 Following Founder & CEO at Canopy (https://t.co/jKvOXIV78X // @Canopy_is). Artist. 🇰🇷🇺🇸
Alex 🌚 @alexmuench
20K Followers 755 Following Lead Product Designer @doist crafting @todoist @twistwork • UI/UX, books, tech, productivity, accessibility, research • veggie • working remote/async • he/him
Amir Salihefendić @amix3k
34K Followers 434 Following Founder/CEO of @Todoist. Sharing about product, AI, bootstrapping, and remote work. Born in 🇧🇦, grew up 🇩🇰, 3x dad 👦🏻👧🏼👶🏼
Lara Hogan @lara_hogan
31K Followers 2K Following Founder and Leadership Coach at Wherewithall. Author of bestselling book Resilient Management. Former VPE, forever an engineering manager. She/her
François Blavoet @francoisblavoet
146 Followers 319 Following
flavien @flavbob
149 Followers 176 Following Doing support @360Learning, trying to turn complex stuff into chewable chouquettes.
Rodolphe Dutel @rdutel
12K Followers 510 Following Tweets on remote work 👨💻🏡 & bootstrapping. Founder of @remotiveio, prev. @buffer @google
Doist @doist
20K Followers 229 Following We believe in a more fulfilling way to work & live– that's why we created @todoist & @twistwork. Learn more about our fully remote, async team → https://t.co/AAvnpeh6NE.
Pocket Casts @pocketcasts
27K Followers 3K Following Your favorite podcast player! Enjoy on Android, iOS, web, Chromecast, Sonos, Wear OS, Apple Watch and CarPlay. https://t.co/eBUuHCDlq3
Clearwage @clearwage
66 Followers 10 Following Nous aidons les entreprises à gérer leur politique salariale. Pour qu’une rémunération équitable ne soit plus un casse-tête.
Sarah Aberman @Sajimi
726 Followers 953 Following @ninchanese co-founder and head of #content. I stream as #nincha #vtuber. Join us & learn Chinese! https://t.co/msahSwu6y0
Sarah Mei @sarahmei
43K Followers 3K Following Software engineer & founder of @RailsBridge and @LivableCode. Engineering at @BackerKit. Black Lives Matter. she/her
Memo Bank @memobank
2K Followers 367 Following Memo Bank transforme le quotidien des entreprises en leur permettant de gérer leur liquidité et leurs transactions de manière centralisée et intégrée.
Mehdi Lahmam @mehlah
647 Followers 207 Following Product & Engineering. Co-founder https://t.co/cHeFebDvQ6. Fmr @CaptainTrain. Co-founded @bump_hq @craftsmenhq. Organizer of @webenvert @smd_conf @rulu
Julien Banse @JulienBanse
243 Followers 883 Following Android developer, comics fan (from everywhere)
Geoffrey Métais @geoffreymetais
343 Followers 559 Following Android Engineering Manager @DeezerDevs VLC for Android contributor, Kotlin & coroutines fanboy
@[email protected]... @Strongolopolis
2K Followers 84 Following mobile dev on @CashApp, RewinD in melee. Slowly moving my presence to mastodon and pairing down twitter
Brictarus @_Brictarus_
11 Followers 8 Following
Stan Kocken @stan_kocken
286 Followers 213 Following CTO @kiro_bio. ex-@Dashlane. Conference Organizer @AndroidMakersFR. Co-founder @Sesterce_io. Opinions are my own.
Renaud Boulard @_renaudb
170 Followers 581 Following Engineering Manager | GenAI TaskForce | Mobile Dev @getaround #remote






































