Daniel Mendalka @daniula
CTO at @Masterplan_com Leiden, Netherlands Joined March 2009-
Tweets5K
-
Followers8K
-
Following846
-
Likes659
This is not an email I ever expected to receive or send.
The most undervalued skill of our time is the ability to write. In an analog world, talking was the main currency of communication and connection. In a digital world, there's a growing premium on the capacity to convey thoughts in text. The pen is mightier than the spoken word.
Hey leaders: If people aren't coming to the office, look in the mirror. They're not avoiding work. They’re avoiding toxic cultures, micromanagers, constant interruptions, and countless hours wasted commuting. If you want people to show up more often, make it worth the trip.
Primer puts all of these to shame
Heartwarming how many people donating supplies for refugees in Ukraine at this Amsterdam do drop off point. About 5 people/minute came. Our sleeping bags + supplies are all going to the Polish border tonight alongside hundreds (thousands?) other items. #SupportUkraine
Criticizing is fast and easy. Creating is slow and difficult. The two hours you spent on a book or movie usually took two years to produce. Anyone can tear down someone else's work. The true test of insight is whether you can help them improve it or build something of your own.
@GergelyOrosz Some might call it a dark UX 🤔😉
“One thing I’ve learned about tech startups: there are two types of CEOs. The “sales CEO” and the “engineer CEO”. The sooner you figure out which CEO your startup has (and you need to figure out: it’s rarely obvious), the better off you’ll be.” - from a startup veteran engineer
When people ask for your feedback, it's a mark of respect. They value your knowledge, skill, or taste. When they don't hesitate to give you feedback, it's a sign of trust. They have faith that you'll take it as an opportunity to grow, not a threat to your ego.
Root cause of failure, root cause of success surfingcomplexity.blog/2021/08/13/roo… via @wordpressdotcom
@Greenwheels The car is not on parking place and nowhere nearby, can't cancel my reservation or edit it to a different car. Your contact support is not responding for over half an hour. Rethink your app for such situations
Dear managers: If you can’t keep your team engaged in virtual meetings, might it be time to rethink how you run your meetings? If you can’t trust people to be engaged when their cameras are off, might it be time to rethink your management style? Sincerely, Everyone with a Job
CRUD - maps database into code DDD - maps business into code
The irony of "soft skills" is that they're often the hardest to master. Leadership, communication, collaboration, creativity, and adaptability may not be technical, but they're increasingly vital. Behavioral, social, and emotional skills are what make humans indispensable.
Tomasz Łakomy @tlakomy
26K Followers 4K Following Principal Engineer / AI Safety @runwayml | ex Eng Team Lead @Stedi | AWS Hero | Co-founder at @cloudashdev | @eggheadio instructor | AWS Certified | Be kind
@brianleroux@indieweb... @brianleroux
20K Followers 10K Following helping build @sanity_io; aws serverless heroes; indieweb developer 🖤
Radek Benkel @radek_benkel
393 Followers 118 Following software engineer @ https://t.co/wHpnitl1cw Also on Bluesky as @radek.benkel.pl (ATM same content here and there)
ArtDot Graphix @artdotgraphix
133 Followers 917 Following I am a Graphic Designer | Freelancer | I help businesses create strategic brand identities that reflect their vision, values, & uniqueness. DM for your project
meet.js @meetjs
2K Followers 474 Following Series of events, meetups, and workshops regularly organised in more than 11 cities in 🇵🇱. One of the largest thriving JavaScript communities in the country.
뇸뇸 @RodgerW54722
18 Followers 988 Following
Tomasz Cekało @TomaszCekalo
54 Followers 685 Following Programista "God, we can change the world, just give us the source code"
Lucas Kuzynski @wookiebpl
312 Followers 110 Following Fullstack developer with 15+ years of experience. Focused JS related technologies, GraphQL and general programming tips.
joshua domingo @komik_joshua32
25 Followers 3K Following #Entrepreneur-CEO and Executive President includes multi-industry experience in manufacturing, wholesale distribution and service.
Geoffrey Kwitko, MD,F... @Gmkwitko
1K Followers 417 Following Oculoplastic, orbital, & neuro-ophthalmic surgeon. Cosmetic and reconstructive eyelid surgeon.☎️📞813-877-8665 311 south macdill Tampa Florida
Olga Gavrina @olga_gavrina
58 Followers 166 Following 15+ years in payments. Bank → High-Risk → Billing Architect. 300+ PSP integrations. Building dispute automation. Sharing real payment war stories
SebastianFleischmann @Sebastian_MKTG
176 Followers 889 Following Passionate about Product Experience , Digital Transformation & Sports, RVP @pendoio
Michał Krzanowski @krzanek
4 Followers 55 Following
Oko @otgontsetsegsan
1K Followers 2K Following
Lutfor IT Solution @ItLutfor
669 Followers 5K Following hi, I am a Graphic Designer and web developer.
Wojtasy @Wojtasy1
0 Followers 11 Following
Subodh Gupta @subodhpgupta
9 Followers 94 Following
Ngan @nganmbui
40 Followers 180 Following
Agnieszka Paś @agnieszka_pas
19 Followers 263 Following Senior Software QA Engineer. QA, CI/CD, Agile enthusiast, interested in software quality, test management solutions, UX strategies and database systems.
Jonathan Allred @jonathan_allred
81 Followers 503 Following
Bitrise @bitrise
10K Followers 4K Following Mobile CI/CD & DevOps for faster, better and more efficient app development. Endlessly scalable. 350+ integrations. 🇯🇵 @bitriseJ 🚨 @bitrisestatus
Pablo Padilla @pgpbpadilla
34 Followers 180 Following
Core by Kink @CorebyKink
148 Followers 1K Following Line of Core Products by https://t.co/7oa0rMjlWr
DevStories @devstoriesapp
199 Followers 944 Following DevStories is an iOS App offering the best software engineering blogs for you to read. Best news: it's totally free.
Michal Zalecki @MichalZalecki
584 Followers 391 Following Strong opinions about software, weakly held. Principal Software Engineer, Tech Lead at @rhobusiness. Blog https://t.co/jv3vbQvWpw
Bri Scully @bri_scully
761 Followers 691 Following GTM @ https://t.co/cYt9MyqooA | formerly PMM MR Apps @Microsoft & @spatial_io | XR Nerd | Emerging Tech | Biohacking & Wellness | Art
Arvid Kahl @arvidkahl
201K Followers 18K Following Building https://t.co/od97B0HVrk and https://t.co/666FnyVVE0 in Public. Raising all the boats with kindness. 🎙️ https://t.co/6w69DZmi8H · ✍️ https://t.co/lpnor5rsTW
The Matrix.org Founda... @matrixdotorg
26K Followers 7K Following Matrix is an open network for secure, decentralised communication. Please support at https://t.co/lGPee0sEdf | Find us at @[email protected]
Str8Gang @gang_str8
456 Followers 4K Following Producer. Music Creator, Wanting to work with and for Artists/Musicians, Building Vibes. Making, Beatz, Songs Writing Lyrics💯🎉 🖤🇬🇧🇹🇹🇯🇲🇬🇾🇺🇸🇧🇧
Pawel Pa @dviedeski
121 Followers 1K Following Ex voice in the @NOIZZpl. UX lover, TQM enthusiast and Conscious Consumerism…
Mateusz Moskwa @333Ivan33
4 Followers 114 Following
Matt Stasch @mattstasch
77 Followers 178 Following
Chengyin Liu @chengyinliu
2K Followers 858 Following
HRIDAYESHWAR RAO @Hridayeshwar
100 Followers 2K Following #fintech #services #technical #architect #new #tech A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
Happierleads @happierleads
243 Followers 4K Following Happierleads help you see who your website visitor are and provides you with their contact details. Get started at https://t.co/s2USneBktY
🛎 Room Steals @RoomSteals
295 Followers 186 Following ✈️ Travel opens our eyes. We want to enable anyone to experience a different culture. 👉 Starting with transparent/wholesale hotel prices.🔥Travel for less $$$.
Ashwin | CustomFit.ai @theashwin007
469 Followers 4K Following Co-Founder & CEO | https://t.co/ZxqOgKFQ2L | Easiest No-code A/B Testing & Website Personalization platform built for marketers
Robert Kisiel @jepekjs
22 Followers 578 Following
Mikołaj @m_kostyrko
93 Followers 702 Following sQA @netguru | Test automation https://t.co/4NihzAHU3x 🇬🇧 https://t.co/KHClwyNszK 🇵🇱
Mateusz Bagilcz @bagilcz
3 Followers 139 Following
Standups @StandupsHQ
539 Followers 4K Following A video-first messaging platform for distributed teams. Have more connected, productive & happier distributed teams. Available on Web, iOS & Android.
LogRocket @LogRocket
15K Followers 468 Following LogRocket combines session replay, performance monitoring, and product analytics – empowering software teams to create the ideal product experience.
JSWORLD Conference @JSworldconf
16K Followers 16K Following Join the Global Community Gathering of JavaScript Engineers in Amsterdam on 7-8 May 2026
Marta @Marta69476739
0 Followers 19 Following
Rogerio Prado de Jesu... @rogeriopradoj
765 Followers 636 Following Desenvolvedor e consultor de TI. https://t.co/jRwXSQ5uOp https://t.co/xJ4o7xPLws
ApproveForMe @ApproveForMe
485 Followers 4K Following ApproveForMe is a dead simple document approval tool that keeps all the feedback in one place.
Gergely Orosz @GergelyOrosz
338K Followers 3K Following Writing @Pragmatic_Eng, the #1 software engineering newsletter on Substack. Author of @EngGuidebook. Formerly Uber & Skype.
Martin Fowler @martinfowler
353K Followers 164 Following Author on Software Development. Works for Thoughtworks. Also hikes, watches theater, and plays modern board games. He/him.
Tomasz Łakomy @tlakomy
26K Followers 4K Following Principal Engineer / AI Safety @runwayml | ex Eng Team Lead @Stedi | AWS Hero | Co-founder at @cloudashdev | @eggheadio instructor | AWS Certified | Be kind
Jeff Atwood @codinghorror
263K Followers 2 Following Indoor enthusiast. Co-founder https://t.co/e62S5uByfO / https://t.co/Tuh5wHPHTI. Let’s be kind to each other. I am no longer on twitter. Find me @[email protected]
Tomasz always taking ... @_tomash
1K Followers 316 Following All-around nerd. Programmer. Sr Staff Dev at EverAI. Ex-Shopify. Founder of @rebased and @artragepl. Books, whisky, crossfit, motorcycling. he/him.
Michal Sadowski @sadek
38K Followers 989 Following Founder at Brand24 - a social listening tool with 4000+ clients from 154 countries. Award-winning photographer & pretty average musician.
Addy Osmani @addyosmani
399K Followers 3K Following Director, @GoogleCloud AI. Gemini ✨ Agents. Prev: Eng. leader, @GoogleChrome • Author • Great user, developer & AI experiences • @GoogleAI @GoogleDeepMind
Borys Musielak @ Wars... @michuk
8K Followers 3K Following I invest in early stage startups in CEE 🇵🇱 🇺🇦 🇱🇻 🇪🇪 🇱🇹 🇷🇴 @smokvc l Co-founded @filmaster @Reaktor_X @StartupPoland | I ❤️ 🎥 🏀 & @olamusielak
Radek Benkel @radek_benkel
393 Followers 118 Following software engineer @ https://t.co/wHpnitl1cw Also on Bluesky as @radek.benkel.pl (ATM same content here and there)
Sos "Wishlist Lazy Ki... @Sosowski
22K Followers 511 Following Mad scientist of video games. Made Thelemite, McPixel, Mosh Pit Simulator and many other gams you never heard of. Currently making Lazy Kickers!
Donald Tusk @donaldtusk
2.0M Followers 710 Following Premier Rzeczypospolitej Polskiej 🇵🇱 Prime Minister of Poland 🇵🇱
Volodymyr Zelenskyy /... @ZelenskyyUa
8.5M Followers 1 Following President of Ukraine / Президент України
Jessica Livingston @jesslivingston
236K Followers 111 Following Cofounder, Y Combinator; Author, Founders at Work; Host, The Social Radars podcast.
Balatro @BalatroGame
157K Followers 70 Following Balatro is a poker-inspired roguelike deckbuilder. https://t.co/BCA7atq9o6 Steam, PS, Switch & Xbox: https://t.co/otMeZPNNW1 🇨🇦
localthunk @LocalThunk
160K Followers 68 Following Literally a fool Creator of @BalatroGame Business/Media: [email protected] Blog: https://t.co/iTSIsn5mHr Direct contact: [email protected]
Simon Willison @simonw
191K Followers 6K Following Creator @datasetteproj, co-creator Django. PSF board. Hangs out with @natbat. He/Him. Mastodon: https://t.co/t0MrmnJW0K Bsky: https://t.co/OnWIyhX4CH
Anthropic @AnthropicAI
1.4M Followers 2 Following We're an AI safety and research company that builds reliable, interpretable, and steerable AI systems. Talk to our AI assistant @claudeai on https://t.co/FhDI3KQh0n.
Pliny the Liberator �... @elder_plinius
189K Followers 1K Following ⊰•-•⦑ latent space steward ❦ prompt incanter 𓃹 hacker of matrices ⊞ breaker of markov chains ☣︎ ai danger researcher ⚔︎ bt6 ⚕︎ architect-healer ⦒•-•⊱
Letterboxd @letterboxd
1.0M Followers 2K Following 🧡💚💙 A global community of film lovers. Share your taste in movies via our free apps for iOS, Android, Apple TV, and on the web.
HeyGen @HeyGen
104K Followers 175 Following Turn ideas into professional videos in minutes. #1 on G2 for Most Realistic AI Avatars. Try it for free at https://t.co/xhvVUYZXQ2
Joshua Xu @joshua_xu_
27K Followers 713 Following Co-Founder and CEO @HeyGen | Make visual storytelling accessible to all.
Shatter Belt @Shatter_Belt
456 Followers 405 Following The extremely independent project from @JamesWardByrkit, director of @CoherenceMovie. Support #IndieFilm!! Now streaming on Apple, Amazon, Google
deepfocuslens @deepfocuslens
4K Followers 179 Following "Look in my cracked eye. You'll see planets."
LondonFetishFilmFesti... @FetFilmFestLND
172 Followers 193 Following A celebration of all things kink, seen through the lens of international filmmakers. TICKETS at https://t.co/XiC7PcPnmR
SebastianFleischmann @Sebastian_MKTG
176 Followers 889 Following Passionate about Product Experience , Digital Transformation & Sports, RVP @pendoio
Stable Diffusion @StableDiffusion
63K Followers 175 Following Stable Digest #13 out now! link in bio ⬇️ #StableDiffusion — AI by the people, for the people. (っ◔◡◔)っ ♥ @StabilityAI community
Runway @runwayml
282K Followers 331 Following Building AI to simulate the world. We're hiring: https://t.co/Aj11xygZYI
The Sandman @Netflix_Sandman
124K Followers 20 Following The Sandman, the complete series, is now playing only on Netflix.
Neil Gaiman @neilhimself
2.7M Followers 848 Following News about Neil Gaiman. Not posted by Neil. You can find him replying & posting in person at neil-gaiman on Tumblr, or @neilhimself.neilgaiman.com on Bluesky
Andrew D. Huberman, P... @hubermanlab
1.8M Followers 2K Following Professor of Neurobiology and Ophthalmology at Stanford Medicine • Host of Huberman Lab • Focused on science and health research and public education
Peter Attia @PeterAttiaMD
603K Followers 137 Following
James Stanier @jstanier
5K Followers 35 Following Dad. CTO. Compilers Ph.D. Wrote some books. I post when I write something.
Murmur @murmur
2K Followers 46 Following Making work wonderful. Where companies make their most important decisions.✨
Aaron Dignan @aarondignan
16K Followers 2K Following Leading agent product at Rocket Money. Friend to misfit toys.
Tomasz Onyszko @tonyszko
5K Followers 734 Following father of two | ex-founder (exited), CTO | podcast host "CTO Morning Coffee"
Krzysztof Daniel @kda
693 Followers 76 Following https://t.co/4VcwPysJ5j Social Compass towards success, Strategy, Decisions, Data and Tough Projects
no context memes @nocontextmemes
2.6M Followers 621 Following making memes at @memelordtech | dm for promo | create your own memes easily here 👇 try for free
Simon Wardley @swardley
40K Followers 5K Following 💚+❤️🇺🇳 I like ducks, they're fowl but not through choice. Born 321 ppm CO₂. https://t.co/iNxwz6cGtn ... the official home of Wardley Mapping
Shit Product Manager @shitPM
21K Followers 13 Following CPO at FTX previously Theranos, WeWork and Flappy Bird.
KanoRijnland @kanorijnland
192 Followers 99 Following KanoRijnland, de kanovereniging voor Leiden en omstreken, gelegen in de Doeshaven in Leiderdorp.
sisyphus bar and gril... @itunpredictable
19K Followers 733 Following blog poaster @amplifypartners @readtechnically
Jarosław Wolski @wolski_jaros
307K Followers 360 Following DEFENCE CHANNEL - dawniej Wolski o Wojnie
HashiCorp, an IBM Com... @HashiCorp
103K Followers 146 Following HashiCorp helps you to automate multi-cloud & hybrid environments with Infrastructure & Security Lifecycle Management.
Mighty @MightyApp
12K Followers 26 Following Mighty is no longer operating as a service. Thank you for everything!
Dan Luu @danluu
46K Followers 43 Following Active on https://t.co/WG71Nrs60M; also trying out https://t.co/fGOzbSxVHi. No longer read replies or notifications here now that tweetdeck is gated.
Lenny Rachitsky @lennysan
372K Followers 3K Following Deeply researched product, growth, and career advice
Angie Jones @techgirl1908
114K Followers 709 Following VP of DX, Agentic AI Foundation. Helping developers build with agents. I ❤️ open source
Patrick McKenzie @patio11
195K Followers 807 Following I work for the Internet and am an advisor to @stripe. These are my personal opinions unless otherwise noted.
Jaana Dogan ヤナ �... @rakyll
167K Followers 1K Following Software Engineer at Google. Simpler platform, better APIs. Simplicity and optimism. Personal opinions.
John Cutler @johncutlefish
117K Followers 10 Following I like the beautiful mess of product development.| newsletter: https://t.co/tCLvCkCdiS


















