Carlos Donderis 🌊 @CaDs
Father👨🍼 Spaniard 🇪🇸 in Japan 🇯🇵 Human nature connoisseur 🧘♂️ VPoE at @mercari_jp 💻 My opinions are my own 💭 Tweets in Spanish, English, and Japanese Tokyo Joined March 2007-
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Running a Software Factory Efficiently at Uber Scale
State of Open Models: Summer 2026 Observations huggingface.co/blog/state-of-…
Finally a real Open AI
Our first model, Inkling. Trained from scratch, weights are open, fine-tunable on Tinker today.
Well, you have to admit that @OpenAI set the bar really high with this post openai.com/index/gpt-5-6/ Looking forward playing with this over the weekend.
I'm happy to see that Fable5 is coming back, but I'm even happier that Sonnet5 is here!
Mercari is rumping up its hiring. As VPoE of AI Innovation I will be sharing some of the upcoming initiatives we will be working on, and the kind of talent we are looking for to make this happen!
📍セッション⑧ 【AIでビジネス機会を形にする:メルカリの新規プロダクトと、新しいものづくり組織】 🎙️Carlos Donderis(@CaDs )、篠原 孝明、井上 瑞希、菱井 康生 📅 15:45〜16:30 ※オンライン同時開催
About Fables and Myths cads-tech.dev/about-fables-a…
I have spent the last 15 hours working with #fable5 , and I'm still forming an opinnion about it. I definitely think is great and there is much to unpack and learn there, and yet I'm still REALLY looking forward the next iteraions of #haiku and Specially #sonnet. My favorite model. @claudeai plz 🙇♂️
I will be a panelist at Code w/Claude Tokyo (Extended) Talking about how Mercari is building AI Native organizations. claude.com/code-with-clau… If you happen to be there, come and say hello 👋
本日6月1日、メルカリのCHRO兼CAIO(Chief AI Officer)に就任しました。 これまでCTOとしてAI活用の推進を担ってきましたが、ここ半年ほど、AI-Nativeを抜本的に進めるには、組織変革を並行しておこなわなければならないと痛感していました。 そこでこの度、CAIOとして全社のAI活用の戦略と推進を引き続き担いつつ、それを根本から実行するための組織変革をCHROとして進めていきます。 AIのリスクを認識し、これまでHRが作り上げてきた組織をリスペクトしながら、大胆に組織変革を起こしていけたらと思います。 まだまだAI-Native Companyになるためにはやらなくてはいけないことがたくさんある!今後ともどうぞよろしくお願いいたします。 ■プレスリリース about.mercari.com/press/news/art… ■mercan(インタビュー記事): careers.mercari.com/mercan/article…
AI in SRE: How Google is Engineering the Future of Reliable Operations sre.google/resources/prac…
Don’t Outsource the Learning
The Definitive Guide to Harness Engineering
BTW I knew this was going to happen. cads-tech.dev/artificial-dum…
Tips to get more out of Opus 4.7 by Boris itself :)
Dogfooding Opus 4.7 the last few weeks, I've been feeling incredibly productive. Sharing a few tips to get more out of 4.7 🧵
Artificial (dumb?) intelligence cads-tech.dev/artificial-dum…
Es una locura. Estamos todos creando un vocabulario esperando entendernos pero hablando de cosas distintas. No ayuda tampoco que todo cambie y evolucione cada mes, y que estemos bombardeados por contenido generado por creadores del mismo buscando y mezclando buzzwords por doquier
Héctor García @kirai
39K Followers 5K Following 作家。日本滞在歴22年。15冊以上の著作を出版。 Escribo libros. I write books. Ikigai: The Japanese Secret to a Long and Happy Life A Geek in Japan The Magic of Japan
Javi López ⛩️ @javilop
132K Followers 1K Following Fundador @Magnific_AI (acq. por @Magnific antes @freepik) No te pierdas nada: https://t.co/gXYv3D1rW7
UnGatoNipón @ungatonipon
11K Followers 2K Following A medio camino entre Madrid y Tokio. Me encanta cualquier cosa con una pantalla y/o un teclado, sobre todo si es un Amiga. スペイン語/日本語/英語Alejandro Cremades /b... @karawapo
5K Followers 925 Following Español en Itoshima / Game Boy / full stack web 在糸島スペイン人 / ゲームボーイ / フルスタックwebエンジニア @KarawapoM @escuchaespanol
Flapy @Flapy
12K Followers 1K Following Spaniard living in #Japan since 2005. Gen X. Japonologist. Computer engineer and retrogamer. Tweets about #travel, #history, #politics, #food and #photography.
ᴆᴀᴎᴉᴋᴀᴢ... @danikaze
2K Followers 446 Following Application Architect ★ Photography ★ Gamer ★ GR86 ★ 🇪🇸🇬🇧🇯🇵
B3nDesuKa 🧚🏻... @b3ndesuka
2K Followers 3K Following 🎓 Investigación 🚅 Viajes 📽️ Cine y series 🍽️ Comida 🇯🇵 Japón
シン@奈良府民 @Oshizu20
2K Followers 1K Following 在日スペイン人大学留学生(情報工学4年生) 近鉄常駐 🇯🇵 JPN|ESP|ENG|CAT|(ZHO) Enginyeria informàtica al Japó Kintetsu daily commuter rant account
Taichi Nakashima @deeeet
8K Followers 1K Following Father of twins. CTO @mercari_inc. Podcast at @e34fm
Raphael Fraysse @la1nra
622 Followers 516 Following Senior EM, Engineering Enablement @mercari_jp / Building blissful platforms in the 🌥 / 🇫🇷🇧🇷 engineer living his dream in 🇯🇵 / Opinions are my own /日本語もOK
Laura 💜 明けな�... @Lau_chan
3K Followers 731 Following Cofundadora de @Japonismo y @saliendodonut 📚Autora de 4 libros sobre Japón (Anaya) 🇯🇵TEI, EAO y profesora de Estudios Japoneses
Espai Daruma @EspaiDaruma
8K Followers 733 Following El punto de encuentro, formación e intercambio lingüístico, cultural y lúdico para los amantes de la cultura japonesa. También en @EspaiDarumaCat y @Daruma_SL
Karla Fuji 富士 迦... @KarlaFuji
3K Followers 880 Following Japonesa nacida en España. Traductora, intérprete, guía y mucho más. The show must go on. スペイン生まれの日本人。翻訳・通訳、旅程管理主任者などなど。最後までやり遂げればならない。
Capitán Urías 🗾�... @CapitanUrias
8K Followers 2K Following Oriol Estrada Rangil @MANGABcn, @COMIC_bcn, @espaidaruma @pujaalputorobot i shitposting
akkie @akkie30
928 Followers 529 Following 東京のSoftware Engineer サモラン全ステカンスト 2024年3月に長男、2026年6月に次男が誕生しました
Javier I. Sampedro @jisampedro
2K Followers 3K Following Chicharrero interested in tech, blogging, photography, travelling and running. Hong Kong life - https://t.co/ujQl5Hnu4K
.maria |-/ @mochittto
3K Followers 682 Following Vivo en Japón con dos perretes y muchas plantas 🌱 💖 🐕 Leo libros, cocino, hago fotos, programo 📖📷👩🏼💻
成田 孝|株式�... @SP_inc0407
8K Followers 8K Following 大学で法律を、グロービスで経営を学び、2015年4月に株式会社SPを創業。事業会社向けにネイティブアプリ開発・WEBシステム開発・映像制作を展開し、現在は新規事業であるDX支援チームの責任者として、現場に寄り添いながら運用しやすい提案を大切にしたチームを率いています。
風鈴音-𝓼𝓾�... @FurinSuzunone
10 Followers 67 Following ぼーっとしてることも多い心配屋𓆡星の数ほど仕事して今がある AIには慣れたいし仲良くしたいと思っておもにプロンプトまわりを学習中 ✤犬が好き੯‧̀͡u🐾 しずかなインターネット( https://t.co/1SWYOCTDd4 )
Abhishek Garg @_AbhishekGarg
77 Followers 396 Following All views, opinions are very obviously just mine.
John Hwang @ainativefirm
1K Followers 2K Following ex-head, vix and variance @ morgan stanley. enterprise ai trends
Arnaud Doko @agdoko
1 Followers 254 Following
DIVYANSH GUPTA @iamdivyansh
296 Followers 4K Following Tech Architect @Naukri.com , Speaker , Tech Writer Javascript Enthusiast, Building things with Javascript http://divyansh-gupta.vercel.ap Insta -imdivyanshgupta
The Distinguished Gen... @TDGentleman
139 Followers 3K Following e/eq Gentleman Builder. I Super Follow @kelseyhightower.🐍 🦀 🦙
Abhi Patel @inFlux_187
12 Followers 692 Following
ℍ𝕚𝕕𝕖𝕒�... @hkano
661 Followers 476 Following 👨💻Software Engineer / 🐘PHP / 💎Ruby / 🐹Go / 🤝Agile(flexible) / 🏢At my 8th company / 👪Father of one / 🏃Sports / ⚽Soccer / 🛌怠惰 / ☯️中庸 / 🎈楽に楽しく生きたい
Tom Fitzmaurice @TFitzmauriceCcK
6K Followers 2K Following Writer from Salisbury. Seeking representation. Author of the memoir 'Canned coffee and Kimonos'.
Katja Müller @MullerKatj91277
3 Followers 15 Following Fictional character. CTO Pixel Spree Gaming Studio in the story Signal Through Noise.
maya miles 🐣 @mayawtue
5 Followers 187 Following 18 🍓 spam only got new of... and i really want someone to make content with ✝︎
Ana López Ramos @nlpzr
296 Followers 5K Following
JapanTechCareers @techjpcareers
267 Followers 1K Following Japan’s job platform for global software engineers 🇯🇵 Tech jobs with visa support, real salary data & company insights Build your career in Japan 👇
Pablo Cobo Pérez @pablocpz_ai
1K Followers 4K Following software/ai stuff at @ Factorial, hacking on physical AI on the side
Pablo Senabre @pablosenabre
601 Followers 2K Following Building at @maisaAI_. Founder at @letseverpark. Previously at REVER (YC S22) and Sapira AI.
Carlo Alberto Ferrari... @CAFxX
421 Followers 656 Following Loudly gesticulating since 1985. PoliTo alumnus. Immigrant. Engineering rubberduck. Opinions and rants are my own. 🇮🇹🇪🇺🇫🇮🇯🇵
すずきしおり@�... @suzuki_briedge
530 Followers 2K Following IT/WEB業界専門ヘッドハンティング|ご縁のきっかけ作り🕊️リサーチャー職|情報収集ベースの面談歓迎|企業の人財課題解決|DMにてお声掛けしております(Messengerも)|メッセージリクエストをご覧いただけますと幸いです|一児👧🏻のママ|🍻×🥟大好き|#人財課題解決 #採用 #転職
coralstyle @coralstyle8
12 Followers 94 Following
Kawase Keisuke / VPoP... @Kesuke2
711 Followers 502 Following VPoP@Sansan / MBA (Quantic) / Ex-Google, LINE, Quipper, CyberAgent, MNTSQ / Tweets are my own.
Keisuke Umezawa (umec... @kumezawa_
3K Followers 1K Following I'm Keisuke Umezawa, an Director of Engineering at @mercari_jp / Opinion is my own
Fujiwara ☁️ @twingo_b
830 Followers 892 Following Solutions Architect at Amazon Web Services Japan / My opinion are my own, not endorsed by any org.
Ninout @ninout_ai
432 Followers 428 Following Ninout(ナインアウト)は「顧客の声を機会に変える」をミッションに掲げ、人とデジタルをなめらかに繋ぐAIインターフェースを「Ask One」「CREATIVE SURVEY」「Fan Fan Fan」の3ブランドで提供しています。
千秋 @Ardeasea437
11 Followers 129 Following
Katrina Pederson @pederson99295
0 Followers 5 Following
Leonel Alvarez villan @leonel_vil33081
21 Followers 2K Following
Hiroki Konishi @hiroki_k8
443 Followers 392 Following aws・生成ai関連のお仕事受付中 ex.CyberAgent Inc. AIオペ室 CTO, Developer Experts:)
AI-Driven Data Qualit... @interzoid
1K Followers 7K Following AI-Driven Data Quality and Data Enrichment Platform. User Apps & APIs: Improve the ROI of your data assets: ANY data on ANY topic, visit https://t.co/AwjUAjzA2n
Agile Navi @flashtillucrash
1 Followers 236 Following
Morgana @ysabeltra
100 Followers 600 Following
Averyuglyperson @averyuglyp94613
58 Followers 3K Following
ElnaDesisles @EDesisles62566
55 Followers 2K Following
Antonio @a_bolea
1 Followers 18 Following
Takeshi | メルペ�... @takeshi_ngsw
1K Followers 405 Following CEO Fintech 兼 MVNO事業責任者 at メルカリ(メルペイ代表取締役CEO, メルコイン取締役)← bitFlyer執行役員 ← Amazon ← MIT MBA’16 ← NTT Com ← 一橋商’07 | 音楽、テクノロジー、楽しく生きる | COTEN Crew
dibupedia @dibupedia1
4K Followers 7K Following LOS ÚNICOS LIBROS con TODAS las SERIES, DIBUJOS y PELÍCULAS de los 70, 80 y 90---solo en WALLAPOP & EBAY-
Dídac @DidacLee
75K Followers 7K Following Head in the clouds & feet on the ground / SSI Divemaster, Entrepreneur, BA & VC. Former Barça Board Member. #CarpeMomentum #GaldanaVentures
Mohamed slaoui @Portero_80
3 Followers 129 Following
Mark Yamamoto @markyamamoto_
2K Followers 1K Following メルペイ事業の立ち上げを行い、今はメルカリ日本事業の責任者をやっています。個人としてはガジェット全般好きで特にポタオデを愛しています。事業に関するポストと、イヤホンに関するポストとギャップがありますがご容赦ください
Seausisl @seausisl87311
7 Followers 289 Following
Héctor García @kirai
39K Followers 5K Following 作家。日本滞在歴22年。15冊以上の著作を出版。 Escribo libros. I write books. Ikigai: The Japanese Secret to a Long and Happy Life A Geek in Japan The Magic of Japan
Javi López ⛩️ @javilop
132K Followers 1K Following Fundador @Magnific_AI (acq. por @Magnific antes @freepik) No te pierdas nada: https://t.co/gXYv3D1rW7Alejandro Cremades /b... @karawapo
5K Followers 925 Following Español en Itoshima / Game Boy / full stack web 在糸島スペイン人 / ゲームボーイ / フルスタックwebエンジニア @KarawapoM @escuchaespanol
Flapy @Flapy
12K Followers 1K Following Spaniard living in #Japan since 2005. Gen X. Japonologist. Computer engineer and retrogamer. Tweets about #travel, #history, #politics, #food and #photography.
ᴆᴀᴎᴉᴋᴀᴢ... @danikaze
2K Followers 446 Following Application Architect ★ Photography ★ Gamer ★ GR86 ★ 🇪🇸🇬🇧🇯🇵
Taichi Nakashima @deeeet
8K Followers 1K Following Father of twins. CTO @mercari_inc. Podcast at @e34fm
Héctor García @HectorGarciaOrg
1K Followers 4K Following 作家。日本滞在歴22年。15冊以上の著作を出版。 I write books. Ikigai, A Geek in Japan, The Magic of Japan, Ichigo Ichie & Shinrinyoku 🍵
Raphael Fraysse @la1nra
622 Followers 516 Following Senior EM, Engineering Enablement @mercari_jp / Building blissful platforms in the 🌥 / 🇫🇷🇧🇷 engineer living his dream in 🇯🇵 / Opinions are my own /日本語もOK
Laura 💜 明けな�... @Lau_chan
3K Followers 731 Following Cofundadora de @Japonismo y @saliendodonut 📚Autora de 4 libros sobre Japón (Anaya) 🇯🇵TEI, EAO y profesora de Estudios Japoneses
Espai Daruma @EspaiDaruma
8K Followers 733 Following El punto de encuentro, formación e intercambio lingüístico, cultural y lúdico para los amantes de la cultura japonesa. También en @EspaiDarumaCat y @Daruma_SL
Karla Fuji 富士 迦... @KarlaFuji
3K Followers 880 Following Japonesa nacida en España. Traductora, intérprete, guía y mucho más. The show must go on. スペイン生まれの日本人。翻訳・通訳、旅程管理主任者などなど。最後までやり遂げればならない。
Capitán Urías 🗾�... @CapitanUrias
8K Followers 2K Following Oriol Estrada Rangil @MANGABcn, @COMIC_bcn, @espaidaruma @pujaalputorobot i shitposting
akkie @akkie30
928 Followers 529 Following 東京のSoftware Engineer サモラン全ステカンスト 2024年3月に長男、2026年6月に次男が誕生しました
Javier I. Sampedro @jisampedro
2K Followers 3K Following Chicharrero interested in tech, blogging, photography, travelling and running. Hong Kong life - https://t.co/ujQl5Hnu4K
.maria |-/ @mochittto
3K Followers 682 Following Vivo en Japón con dos perretes y muchas plantas 🌱 💖 🐕 Leo libros, cocino, hago fotos, programo 📖📷👩🏼💻
𝙼𝚊𝚞𝚛𝚘 ... @Fotomaf
34K Followers 9K Following 𝙸'𝚖 𝚁𝚊𝚍, 𝙸 𝙺𝚗𝚘𝚠. Soluciono problemas. Papá. // Docente en @ISDI_edu // CMO
Luis Rodríguez @luisete
27K Followers 4K Following En @japonismo y @SaliendoDonut. ExGoogle UK. Autor de libros sobre Japón. Teleco y EAO. Comilón. También en https://t.co/kF2mNj4c2K y https://t.co/Ok26ZbcJbY
Ornith @ornith_
19K Followers 334 Following Once you have tasted flight, you will walk the earth with your eyes turned skywards.
MicroHobby @MicroHobbyPapel
2K Followers 8 Following MicroHobby, revista independiente de usuarios Sinclair y otros microordenadores Amstrad, Commodore y MSX.
Garry Tan @garrytan
1.1M Followers 6K Following President & CEO @ycombinator —Founder @garryslist—Creator of GStack & GBrain—designer/engineer who helps founders—SF Dem accelerating the boom loop
Nous Research @NousResearch
266K Followers 28 Following A bunch of nerds making progress https://t.co/vrD0aDIGDQ
Shunsuke Sako @SS_Sako
8K Followers 1K Following UCLA→三菱商事→Motherhouse →Mister Minit APAC CEO→ Unison Capital Management Advisor→Mercari Marketplace CEO
Mira Murati @miramurati
992K Followers 641 Following Now building @thinkymachines. Previously CTO @OpenAI
Tuomas Artman @artman
19K Followers 1K Following Co-founder @linear, previously senior staff engineer @Uber
Thinking Machines @thinkymachines
182K Followers 1 Following Thinking, beeping, and booping. @tinkerapi
Yann LeCun @ylecun
1.3M Followers 794 Following Founder/Chair, AMI Labs; Professor, NYU; Partner, 224 Ventures; Ex-Chief AI Scientist, Meta. Researcher in AI, ML, Robotics, etc. ACM Turing Award Laureate.
ClaudeDevs @ClaudeDevs
680K Followers 2 Following Official updates for developers building with @ClaudeAI
Karri Saarinen @karrisaarinen
92K Followers 1K Following ceo of @linear 🇫🇮🇺🇸 previously: @coinbase @airbnb, YC alumni
Kun Chen @kunchenguid
32K Followers 184 Following Member of the Technical Community. Captain of @myfirstmate @theSSHHIP Author of https://t.co/rxk2joB5Ix
Claude @claudeai
1.8M Followers 2 Following Claude is an AI assistant built by @anthropicai to be safe, accurate, and secure. Talk to Claude on https://t.co/ZhTwG8d1e5 or download the app.
Stitch by Google @stitchbygoogle
162K Followers 6 Following Stitch by @GoogleLabs turns your ideas into beautiful interface designs, powered by some of the latest Gemini models. Try free of charge.
Sakana AI @SakanaAILabs
139K Followers 0 Following Building Frontier AI in Japan Try Sakana Chat, Translate, Marlin, Namazu, Fugu 🐡 https://t.co/stLdPSz1Y7
東京大学 松尾�... @Matsuo_Lab
62K Followers 12 Following 東京大学 松尾・岩澤研究室のアカウントです。授業や研究に関する情報、研究室の雰囲気等を発信していきます。 #松尾研
Ben Thompson @benthompson
282K Followers 2K Following Author/Founder of @stratechery. Host of @ditheringfm @sharptechpod. @notechben for sports. @monkbent on other networks. Home on the Internet.
Antonio Ortiz @antonello
28K Followers 2K Following Influenciador de fotos de paseo marítimo en Whatsapp Status. No sabemos gran cosa, vamos saliendo del paso.
Micromanía @MicroManiaPapel
3K Followers 19 Following Micromanía, revista independiente para usuarios de microordenadores de 8 y 16 bits, MS-DOS, consolas de los 90 y todo lo que huela a "pixel art".
Claude Code Changelog @ClaudeCodeLog
81K Followers 20 Following UNOFFICIAL – but tolerated – bot posting Claude Code CLI, feature flag & prompt changes. Full CC history in github repo.
Maisa @maisaAI_
3K Followers 2 Following Maisa is how regulated enterprises confidently run their most demanding processes with Digital Workers.
Fujiwara ☁️ @twingo_b
830 Followers 892 Following Solutions Architect at Amazon Web Services Japan / My opinion are my own, not endorsed by any org.
Keisuke Umezawa (umec... @kumezawa_
3K Followers 1K Following I'm Keisuke Umezawa, an Director of Engineering at @mercari_jp / Opinion is my own
Carlo Alberto Ferrari... @CAFxX
421 Followers 656 Following Loudly gesticulating since 1985. PoliTo alumnus. Immigrant. Engineering rubberduck. Opinions and rants are my own. 🇮🇹🇪🇺🇫🇮🇯🇵
Pablo Senabre @pablosenabre
601 Followers 2K Following Building at @maisaAI_. Founder at @letseverpark. Previously at REVER (YC S22) and Sapira AI.
Pablo Cobo Pérez @pablocpz_ai
1K Followers 4K Following software/ai stuff at @ Factorial, hacking on physical AI on the side
Juan @aallendezz
876 Followers 162 Following 🇪🇸 21yo CS student coding stuff @kiboventures • 🏊♂️ Wannabe triathlete
Samuel @disamdev
550 Followers 368 Following 16y/o full stack dev 🇪🇸 product engineer at @QuiverAI | cofounder @hackspain26 | scaled iOS apps to 5 figures
Third Intelligence @third_i_inc
630 Followers 0 Following AI研究開発企業『Third Intelligence』の公式アカウントです。 人間の脳でも、従来のAIでもない新たな知能の創出とAGIの実現を目指しています。 プレスリリースや企業関連情報などをお知らせします。 採用情報はこちらへ→https://t.co/bW6SEK3UMe
Kawase Keisuke / VPoP... @Kesuke2
711 Followers 502 Following VPoP@Sansan / MBA (Quantic) / Ex-Google, LINE, Quipper, CyberAgent, MNTSQ / Tweets are my own.
Armin Ronacher ⇌ @mitsuhiko
94K Followers 905 Following Creator of Flask. Building at https://t.co/uGuzfu0LKT. Bypassing Permissions. Can hand crank. Husband and father of 3 — “more nuanced in person”
石黒 卓弥|Takay... @takaya_i
39K Followers 3K Following father / LayerX / 逗子 #逗子移住note / テニス🎾 / バスケ #ビーコル🏀 / 鹿島アントラーズ⚽️ / 茨城 / 水戸一 / https://t.co/TPP1knri9e
Brad Menezes @bradmenezes
7K Followers 1K Following Vibe Coding Your CISO Approves | Cofounder & CEO @superblocks
Google DeepMind @GoogleDeepMind
1.5M Followers 274 Following The engine room of @Google. Building AI safely and responsibly to solve the world’s most complex problems. Join us: https://t.co/jUHQA27iBL































