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.
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
Experts leading experts is a great way to retain people and foster innovation hbr.org/2020/11/how-ap…
Most Execution problems are really 1) Strategy problems, or 2) Interpersonal problems, or 3) Culture problems Good leaders execute well because they understand this. They fix the root problem. Bad leaders struggle because they are always applying band-aids.
Not all engineering leaders are engineering managers leaddev.com/hiring-onboard…

Antoine Martin @an21m
16K Followers 2K Following working on @amoamoamo with a few friends / ex ceo @zenly🍦
Antonio Leiva @leiva_dev
13K Followers 2K Following CEO of https://t.co/eSZ86d9xwS Send me a DM if your company is looking for advanced Android & Kotlin training. 🤖 #AndroidDev GDE
Paris Android User Gr... @ParisAndroidUG
3K Followers 416 Following La communauté des Passionnés et Professionnels Android de Paris. Conférences, réseautage, partage https://t.co/Np7MDucVDM
Amaël ✌️ @r4dixx
938 Followers 687 Following Android Developer 👨💻 • @ParisAndroidUG & @AndroidMakersFR organizer 👥 • Remote worker 🏡 • he/him
Jean-Baptiste Dalido @jbdalido
656 Followers 841 Following Engineering @zml_ai, 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 170 Following Expérience client, optimisation, basket, jeux vidéo et espaces insécables. Mastodon → https://t.co/ezowT0vh3M
AndroidWeekly @androidweekly
22K Followers 269 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 867 Following Next edition: April 10-11 2025 • Your favorite French #AndroidDev conference 🤖🧑💻 • @ParisAndroidUG & @droidcon behind this 🤜🤛
Raph @rafjlls
287 Followers 2K Following CEO of existential crisis • Into electronics, embedded & prog music. Also, trains 🚆 • linksgerichtet • 🌈 • 🟦🌅 @saucisse.net • 🐘 @[email protected]
Pranay Saini @pranay8saini
26 Followers 301 Following
Ahmed Dahbi @dahbiahmed
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B @bt_2044
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Romain 🖖 @rmnagain_
247 Followers 1K Following 🛞 Designing at @Michelin ⌛ ex @RadioFrance ('25) @TagHeuer ('20), @Mention ('19) and @Fabernovel ('18) 🤷♂️ "Computer guy" for my family
Gonzague 👨🏼�... @gonzague
32K Followers 3K Following Employee of the severed floor, with Mark S and Helen R.
Romain Filinto @thexfifix
548 Followers 3K Following Lead / Senior Software Engineering - Passionné par les nouvelles technologies 🚀 #PHP #Symfony #RoR #DDD #CQRS
Léo Darriet @leodarriet
225 Followers 944 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
10K Followers 3K Following Co-founder & CEO @photoroom_app (YC S20) - Most used AI photo editor. ex GoPro, Stanford, Polytechnique
HilaryII. @5ax9YTOvyOewLjk
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Prodigy AI @prodigy_match
101 Followers 806 Following Upload your candidate's resume to receive the highest-fit job matches from your target market. Powered by AI magic.
Marion Aguirre @marionaguirre
403 Followers 1K Following Head of People @photoroom_app #HR #Recruiting - Back to school to study psychology 🎒
Florian @FloGz7
43 Followers 330 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
413 Followers 2K Following Top AR/VR, Game, Mobile App & Ecommerce Development Company in India, USA
Marine DUGUA @DuguaMarine
91 Followers 445 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
110 Followers 1K Following Young French Game Developer who has fun doing strange stuff. Github: https://t.co/AZwuqUvLiz
Gracker @Gracker_Gao
2K Followers 5K Following Android Performance|🚴3w Cycling|📊Quantified Life|🤖AI体验 Focus: Real App UX · Cycling Progress · Health Metrics Tracking
Densi Gundaniya @DensiGundaniya
4 Followers 53 Following
Hussein Haj Mohammed @HusseinnHM
40 Followers 417 Following C# || .NET || Backend 🧑🏻💻 🛠 My NuGets : https://t.co/ZPX3vlDHXs
Achmad fathullah @Achmad_AlFath
135 Followers 708 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
584 Followers 1K Following La carte collaborative des lieux ouverts durant la crise sanitaire #Covid19 #OpenStreetMap
Aye Myat Minn @AyeMyatMinn
42 Followers 226 Following
Madalin Valceleanu @MValceleanu
113 Followers 129 Following Senior Software Engineer @Google Enthusiast and passionate about clean code, modular architecture , testing and automation 🇷🇴 - 🇪🇸 - 🇬🇧
ortis lazlo @ortislazlo
56 Followers 2K Following
Himanshu Dudhat @HimanshuDudhat
74 Followers 203 Following Freelance Software Developer | Formal CTO @GoldenmaceIT
The Programmers_JFJ @jfj_the
38 Followers 428 Following Coder, Programmer, Gamer, Geek, Online teacher, Hacker, Technology enthusiast, Motivator and more
LumApps @lumapps
1K Followers 843 Following LumApps is the future-ready Intranet for businesses that want to stay ahead.
Antonio Roa-Valverde @roa_valverde
616 Followers 2K Following #android dev ∙ mountainhopper (🥾, 🚵, 🏍) ∙ 🇪🇺
Nathan Hoskisson @NathanHos
108 Followers 788 Following Keen Cyclist 🚴♂️ Bikepacking 🌍 Triathlon 🏃 Heading up mobile recruitment @ Gravitas
Siddhivinayak @daydroider
232 Followers 2K Following Android | Machine Learning | Guitars | Metal | Psy #AndroidDev #MachineLearning #Metal
Abdelkarim @Abdelkarim013
210 Followers 3K Following Full Stack developer, Android, Kotlin, Spring boot, Java, AWS, Angular, React, Docker.
Chris Banes @chrisbanes
50K Followers 303 Following
Android Developers @AndroidDev
2.2M Followers 350 Following Get the latest Android news, best practices, live videos, demonstrations, tutorials, and more!
Find me on 🦋 : @p-... @Piwai
17K Followers 353 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
166K 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
47K Followers 510 Following Previously: Engineering Director, Android Toolkit team at Google. https://t.co/LXCDLMzNVM on Bluesky
Jorge Castillo @JorgeCastilloPr
15K Followers 491 Following Android @DisneyPlus. Formerly @X. Author of Jetpack Compose Internals https://t.co/0yAw07tdjQ. Building StoreShots 📸📲
Rebecca Franks @riggaroo
24K Followers 2K Following https://t.co/XeaoCZXbGf https://t.co/njcqLhECYP 🤓 @AndroidDev Rel Eng at @Google in 🇬🇧 on #JetpackCompose 💬 Opinions are my own
Kaushik Gopal @kaushikgopal
12K Followers 1K Following 🌐 https://t.co/JiOqhEeDRM 👨💻 Principal Engineer @instacart + Caper 🛒 🎧 Fragmented podcast 🤖 Google Developer Expert
🤌 [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 170 Following Expérience client, optimisation, basket, jeux vidéo et espaces insécables. Mastodon → https://t.co/ezowT0vh3M
Doist Developers @doistdevs
604 Followers 66 Following All things development from the @doist team, working on @todoist and @twistwork.
Dy 🌈 @evowizz
4K Followers 2K Following 🇫🇷 Crafting software, shaping components & discovering hidden features
Francophonie Android ... @fraug_android
200 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 56 Following Creator of Weather Timeline, Flamingo, BuzzKill & Bouncer. For support please press the contact support button in the app.
Manuel Vivo @manuelvicnt
16K Followers 269 Following Staff Mobile Architect and Android Engineer @Bumble_Tech 🐝 Android GDE 🤖 Ex Android DevRel @Google ℹ️ Book a 1:1 with me! https://t.co/LIksGyQL0a
Roman Elizarov @relizarov
19K Followers 911 Following Software infrastructure & libs, language design, sports programming/ICPC, concurrency & algorithms, math & quantitative finance. ex-project lead for @Kotlin
Leland Richardson @intelligibabble
14K Followers 747 Following Next: Technical Staff @AnthropicAI Prev: Jetpack Compose @Google. I like learning, discussing, and diving into challenges.
Gonçalo @goncalossilva
2K Followers 155 Following CTO @doist, building @todoist @twistwork. Organizing @lisbonai_. 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.
Jen (Kim) Serena @jenistyping
24K Followers 970 Following Founder/CEO of Workflow - teaching startups how to not suck at hiring, people ops, and more: @workflow_hq.
bsky.app/profile/sake... @saketme
7K Followers 419 Following Building @CashApp (at S̶q̶u̶a̶r̶e̶ @Blocks) • Android GDE • he/him.
Camille Fournier @skamille
47K Followers 804 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
15K 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
312 Followers 500 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 96 Following Founder & CEO at Canopy (@Canopy_is) 🌳 Artist. My life's mission is to help people become happier at work. 🇰🇷🇺🇸
Alex 🌚 @alexmuench
20K Followers 752 Following Lead Product Designer @doist crafting @todoist @twistwork • UI/UX, books, tech, productivity, accessibility, research • veggie • working remote/async • he/him
Amir Salihefendić @amix3k
32K Followers 385 Following Founder/CEO of @Doist. Born in Bosnia 🇧🇦, grew up in Denmark 🇩🇰, 3x dad 👦🏻👧🏼👶🏼
Lara Hogan @lara_hogan
32K 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
148 Followers 321 Following
Jose Alcérreca @ppvi
11K Followers 308 Following Android Architecture and Testing - Developer Relations Engineer @ Google Not checking X anymore. Follow me on LI or BS.
flavien @flavbob
151 Followers 181 Following Doing support @360Learning, trying to turn complex stuff into chewable chouquettes.
Rodolphe Dutel @rdutel
13K Followers 488 Following Tweets on remote work 👨💻🏡 & bootstrapping. Founder of @remotiveio, prev. @buffer @google
Doist @doist
20K Followers 230 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
28K Followers 3K Following Your favorite podcast player! Enjoy on Android, iOS, web, Chromecast, Sonos, Wear OS, Apple Watch and CarPlay. https://t.co/eBUuHCDlq3
Malloradium @Malloradium
164 Followers 140 Following Quoique je dise, quoique je fasse, il faut que passent les voitures (noires).
Clearwage @clearwage
68 Followers 10 Following Nous aidons les entreprises à gérer leur politique salariale. Pour qu’une rémunération équitable ne soit plus un casse-tête.
@[email protected] @BoD
3K Followers 540 Following Please see my personal website for more info about myself: https://t.co/LZVyrSSKQh. If I don't reply to a mention, it's because I get mentioned all the time by mistake! Sorry!
Sarah Aberman @Sajimi
727 Followers 958 Following @ninchanese co-founder and head of #content. I stream as #nincha #vtuber. Join us & learn Chinese! https://t.co/msahSwu6y0
Sarah Mei @sarahmei
44K Followers 3K Following Software engineer & founder of @RailsBridge and @LivableCode. Engineering at @BackerKit. Black Lives Matter. she/her
Memo Bank @memobank
2K Followers 370 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
644 Followers 206 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
250 Followers 879 Following Android developer, comics fan (from everywhere)
Geoffrey Métais @geoffreymetais
350 Followers 567 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
287 Followers 215 Following CTO @kiro_bio. ex-@Dashlane. Conference Organizer @AndroidMakersFR. Co-founder @Sesterce_io. Opinions are my own.
Renaud Boulard @_renaudb
177 Followers 561 Following Engineering Manager | GenAI TaskForce | Mobile Dev @getaround #remote