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Marcelo Calbucci

@calbucci.com
5K followers 27K following 487 posts

Founder of @seattleflow.org Author of "The PRFAQ Framework" (www.theprfaq.com). 18yrs of startups. MSFT, Amazon. Runner. Cook. Geek. Tech, software, AI/ML, UX, product, innovation, startups, leadership. 📍 Seattle 🇧🇷🇺🇸 calbucci.com/link

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Marcelo Calbucci @calbucci.com · 24/09/2026
I built my personal fitness display, a website to manage my training plan, and an MCP to let Claude control everything and adjust my plan according to my races, weather, etc. I believe that in the next decade we'll see a renaissance for the arts, science, technology, industry, and humanity.
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Marcelo Calbucci @calbucci.com · 14/09/2026
People are handing full access to their emails, documents, and calendars to "unknown" AI agent startups and to corporations with a checkered past of privacy violations.
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Marcelo Calbucci @calbucci.com · 27/04/2026
If you work at Microsoft, and you're a tech person or innovator, consider the other possibilities out there. --> seattleflow.org/startupday
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Marcelo Calbucci @calbucci.com · 27/04/2026
If you work at Microsoft, May 7 is a big day. I worked there for 7 years. Built Startup Day for people sitting where you are now. Stay or go? Found or join? 16 founders sharing what actually worked. Startup isn't for everyone. Is it for you? May 15. Seattle. Prices go up Friday. Link below.
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Marcelo Calbucci @calbucci.com · 23/04/2026
I worked for 2 years in Benefits/HRTech, and 5 years in HealthTech. My superpower was to be an idiot in understanding insurance, benefits, and healthcare. h/t @morningbrew.bsky.social
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Marcelo Calbucci @calbucci.com · 21/04/2026
If you take the blip from the pandemic, Seattle has had the lowest # of investment deals in a decade (since 2016 Q4). The situation is worse than it appears because the total number of deals in the US has grown 40% since 2016. I have several theories, but I want to hear what you think is going on.
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Marcelo Calbucci @calbucci.com · 21/04/2026
Software engineers, PMs, designers, and CS / ML / MBA students: We're doing a Startup Fair @ Startup Day 2026. Builders from Clarify, Yoodli, Clearly AI, Predictable Machines, and more will talk product, tech, and their roles. No recruiters. May 15. Free 👉 seattleflow.org/fair
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Marcelo Calbucci @calbucci.com · 21/04/2026
The Startup Day 2026 speaker lineup is live. 16 founders. 30+ startups built between them. Over $1B raised. Products used by billions. Seattle, May 15. Here's who's on stage. 👇
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Marcelo Calbucci @calbucci.com · 07/04/2026
In 2010/2011, I printed a book called the Startup Guide. A directory of vendors and service providers for anyone building a startup in Seattle. Today we're launching the Startup Kit. Same idea, different format. A directory to help founders find the resources they need to build+grow their startups.
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Marcelo Calbucci @calbucci.com · 06/04/2026
6,000+ tech layoffs in Seattle. Amazon, Microsoft, Oracle, Meta. You don't need permission to start a company. You don't need all the answers either. You need to learn from founders who've done it recently. That's why I'm putting together @seattleflow.org Startup Day!
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Marcelo Calbucci @calbucci.com · 30/03/2026
Shortcut to building a successful business: find a problem where you already know the market is there. Patrick Thompson built Clarify by skipping problem validation and front-loading business model validation instead. Hear Patrick + other founders at seattleflow.org/startupday
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Marcelo Calbucci @calbucci.com · 26/03/2026
I've noticed a new trend on major products: bugs! Lots of bugs. I'm not saying it's LLM coding, but it feels to me that companies are struggling with the new software development lifecycle.
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Marcelo Calbucci @calbucci.com · 24/03/2026
Most founder advice isn’t wrong. It’s just not yours. Marius Ciocirlan drops some meta-advice on how to avoid bad advice. Come listen and meet Marius at Startup Day 2026. seattleflow.org/startupday
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Marcelo Calbucci @calbucci.com · 23/03/2026
There is a fine line between hallucination and vision. Ian Wong (Summation CEO, and Opendoor co-founder) got 5 companies to say “yes” before he wrote a single line of code. He's speaking at @seattleflow.org Startup Day 2026 on May 15 in Seattle. seattleflow.org/startupday
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Marcelo Calbucci @calbucci.com · 12/03/2026
.@ericries.bsky.social wrote the book that changed how startups get built. His next one will change how they stay built.
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Marcelo Calbucci @calbucci.com · 11/03/2026
@ericries.bsky.social keynoted Startup Day back in 2011. I guess Seattle founders didn't scare him enough, and he's back for more! Eric is opening Startup Day 2026! The author of The Lean Startup has a new book, Incorruptible. Ticket buyers get a free copy! ☔️🚀 seattleflow.org/startupday
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Marcelo Calbucci @calbucci.com · 10/03/2026
We announced that Terry Myerson will keynote @seattleflow.org Startup Day. Thanks T.A. McCann for making the intro, and Sarah Climaco and @caligirlinpnw.bsky.social for the coordination. It takes a village to bring this to life. I'm glad to have @shaunacausey.bsky.social and Kailin Spencer with me!
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Marcelo Calbucci @calbucci.com · 09/03/2026
Terry Myerson left Microsoft after 21 years to build Truveta, now a $515M+ company saving lives with data. He's keynoting Startup Day 2026. Early bird ticket sales end this Friday. seattleflow.org/startupday
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Marcelo Calbucci @calbucci.com · 05/03/2026
Applications open for the Startup Day 2026 Startup Fair. 10-15 startups, demo tables, 400+ founders and investors in the room. Apply by April 10. startupday.seattleflow.org/startup-fair
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Marcelo Calbucci @calbucci.com · 03/03/2026
18 advisors just announced for @seattleflow.org Startup Day 2026's Advisory Room. Investors from Madrona, M12, Graham & Walker, and more. Book 1:1 sessions with the advisor of your choice. seattleflow.org/startupday
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Marcelo Calbucci @calbucci.com · 26/02/2026
May 15th. 400 founders. The conference Seattle's been missing. startupday.seattleflow.org @seattleflow.org
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Marcelo Calbucci @calbucci.com · 24/02/2026
We hand-picked 15 founder-speakers including Rand Fishkin, David Shim, Maria Colacurcio, and more. Every talk covers a real stage of the startup journey, from "should I do this?" to acquisition. No theory. No consultants. Just founders sharing what worked in recent years.
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Marcelo Calbucci @calbucci.com · 24/02/2026
Something is happening in Seattle right now. Layoffs + AI + Tech + ☔️ = countless side-projects, ready for the next step -> Founders galore. What's missing is a place where it all connects. We built it. 🧵
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Marcelo Calbucci @calbucci.com · 21/02/2026
The people rejecting AI in their personal and professional lives today have the same attitude as the people rejecting calculators in the 1970s.
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Marcelo Calbucci @calbucci.com · 17/02/2026
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Marcelo Calbucci @calbucci.com · 03/02/2026
This article by Stratechery is a must-read to examine the future of tech, software, and AI. The adage from Bill Gates that we overestimate the change that will occur in the next two years and underestimate the next 10 is out the window. We don't know what’s going to happen in two or twenty years.
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Marcelo Calbucci @calbucci.com · 03/02/2026
Anguilla is cashing in while it can.
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Marcelo Calbucci @calbucci.com · 29/01/2026
Looks like OpenAI is losing its magic. It went from having the Midas touch to being a curse for its key partners in less than six months.
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Marcelo Calbucci @calbucci.com · 06/01/2026
We are about to witness unprecedented levels of psyops, disinfo campaigns, and astroturfing. Society is not prepared for this, and social media companies benefit from the engagement, so they won't do much to stop it.
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Marcelo Calbucci @calbucci.com · 03/01/2026
🤔
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Marcelo Calbucci @calbucci.com · 15/12/2025
The React/NextJS vulnerabilities recently discovered are a great example of how we still depend on software engineers. What happens to the vibe-coded apps deployed by non-engineers? Tech is too fragmented and too diverse for us to develop a unified AI agent to handle this.
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Marcelo Calbucci @calbucci.com · 12/12/2025
This is closer to the true cost of AI models, in which case the tradeoff between AI and human labor blurs. For comparison, $168/day is more than the minimum wage is most places.
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Marcelo Calbucci @calbucci.com · 10/12/2025
I'm sorry, what?!
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Marcelo Calbucci @calbucci.com · 08/12/2025
To add insult to injury, now LinkedIn is hiding comments with links from the post author! LinkedIn/Twitter/Threads shows posts with links to fewer people. The “standard” became to share the link in the comments so you reach *your* audience and people click the link in the comment.
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Marcelo Calbucci @calbucci.com · 03/12/2025
Still on the theme of “AI will replace SaaS,” I wrote this post 8 years ago, and it's more relevant now than ever. www.calbucci.com/why-code-rot...
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Marcelo Calbucci @calbucci.com · 01/12/2025
This is “Modern” medicine: Mid-80s: GLP-1 discovered 2005: Approved by FDA for diabetes 2014: Approved for weight loss 2025: Recommended by the WHO 20??: Accepted by most doctors. This pace of innovation is unacceptable nowadays.
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Marcelo Calbucci @calbucci.com · 25/11/2025
ChatGPT saved me from a USPTO scam. I was ready to respond to a message from the USPTO when I pasted it into ChatGPT to ensure I answered it the right way.
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Marcelo Calbucci @calbucci.com · 23/11/2025
This comment on the “South Korea Is Over” video on YouTube is brutally honest and clearly articulates the sentiment of a generation. I wish that other nations would take note and act. It's not too late for the US. We have to ensure women don't feel hopeless and helpless about the future.
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Marcelo Calbucci @calbucci.com · 21/11/2025
That’s why I’m so optimistic about the future of software engineers. One vibe coder created work for three software engineers for at least three months!
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Marcelo Calbucci @calbucci.com · 20/11/2025
Like Mariah Carey's flawless yearly cycle.
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Marcelo Calbucci @calbucci.com · 13/11/2025
This is a first from Claude. It told me it'll take 21-29 hours to implement this feature. I don't buy it. I think it'll be 4-6h. I'll report back EOD.
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Marcelo Calbucci @calbucci.com · 12/11/2025
After 11 months, I sold nearly 1,000 copies of my book, and I have only 21 ratings on Amazon. It's easier to get someone to buy the book than to get them to leave a rating.
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Marcelo Calbucci @calbucci.com · 10/11/2025
Think of a big company as a city full of diverse neighborhoods. A person who lives in one neighborhood will have a unique experience from someone in another. One person on one team at a big tech company doesn't represent the full spectrum of experiences and responsibilities for that role.
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Marcelo Calbucci @calbucci.com · 09/11/2025
I've been unable to log in to my Webflow account for a week now. I tried everything. It worked on Safari, but stopped working on Chrome (even on a new profile). ChatGPT gave me a bunch of suggestions, and this one, unexpectedly, worked! Posting it here in case it helps someone.
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Marcelo Calbucci @calbucci.com · 04/11/2025
Is there a better sentence in a subject line than "no action required"?
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Marcelo Calbucci @calbucci.com · 02/11/2025
14-mile run, 27 miles this week. Back in the game and accepting recommendations for a marathon in 2026. Also, Kirkland feels like a movie set.
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Marcelo Calbucci @calbucci.com · 29/10/2025
Today, I chose violence.
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Marcelo Calbucci @calbucci.com · 24/10/2025
Twitter toxicity level is off-the-charts. (This is a reply to a tweet about Ubuntu/Rust)
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Marcelo Calbucci @calbucci.com · 16/10/2025
Fred Hutch, a leading cancer research and treatment center in Seattle, has stopped sponsoring H1-B visas for doctors, researchers, and healthcare professionals because of the $100,000 additional fee for this visa.
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Marcelo Calbucci @calbucci.com · 13/10/2025
Make no mistake, AI *will* transform work faster than previous technology advancements. The rumble you hear today about layoffs and the difficulty of white-collar workers to find jobs is explainable by the wave of economic turbulence we've been living through for the last five years. 👇
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