AI Is Creating New Markets. Here’s Where to Look.

Some people will tell you everything has already been built.

Others will build in vain, with no real problem to solve, and contribute to the endless rise of ghost startups.

You’ve seen them. Solutions looking for a problem. “Uber for dogs” pitches that go nowhere.

Yet, it doesn’t have to be like this.

If you love building and want to create something truly valuable, I’m going to show you exactly how to hunt for the right opportunities.

P.S. If you know someone hunting for a legitimate startup idea, send them this. The framework is theirs to steal and build on.

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There’s a step-by-step framework at the end. Stick around.

The story started last week.

I was at an event and met someone building in a space I genuinely hadn’t paid much attention to.

Injection molding.

If you don’t know what that is, that’s how most plastic parts in the world are made.

Car components. Medical devices. Consumer electronics.

The plastic in almost everything you own came out of a mold.

Here’s how it works: you design a mold, called a matrix, you manufacture it, and you use it to produce parts at scale.

Simple enough.

The problem?

Creating the mold is expensive and slow, so the whole industry was locked into B2B.

Until now.

The Rise of AI Creates Actual Opportunities, Not Just Spam

There is one technological shift that unlocked a business model that simply wasn’t possible before.

In our case, the bottleneck is that the mold is too expensive and too slow to make, so it only ever made sense at enterprise scale.

With AI, you can now design and program the CNC machines that build these molds dramatically faster than before.

What used to take weeks, sometimes months, now takes a fraction of that time.

The guys I was talking to are now partnering with car manufacturers to produce second-hand plastic parts in large volumes.

And they also built a B2C model.

If you own a car that’s no longer supported by the manufacturer and you need a specific part, they create the mold from scratch and produce it just for you.

Now, you might not care about injection molding. That’s fine.

Understanding the core principle will help you build a successful startup.

So let’s take another example.

The bottleneck in the healthcare industry has always been access: you need a doctor, a referral, an appointment, expensive equipment, and a facility just to get scanned.

So Midjourney – yes, the AI image company – just announced that they’re building a full-body ultrasound scanner.

You step onto a platform, descend into a shallow pool of water, and a ring of sensors maps your entire body using sound waves.

Really curious to see how that one unfolds:)

Before I get to the step-by-step process, remember:

P.S. Have you already spotted an opportunity like this in your industry? If yes, drop it in the comments. I’ll give you feedback based on my experience.

The Bottleneck Is Always the Opportunity

Every industry has one.

In injection molding – it was the mold.

In healthcare imaging – it was hospital infrastructure and cost.

The pattern is always the same:

  • A process is slow, expensive, or technically complex

  • That limits who can access it – usually enterprises, institutions, the wealthy

  • AI makes that process faster, cheaper, or more automated

  • The market opens to everyone who was previously locked out

B2B becomes B2C.

Institutional becomes consumer.

Expensive becomes affordable.

“The opportunity isn’t where nobody has gone. It’s where nobody could go – until now.”

Here’s How to Find It in Your Industry

Pick an industry.

Write down every step between raw input and end customer.

Then ask:

  • What’s the slowest step?

  • What’s the most expensive step?

  • What’s the step that decides who gets access and who doesn’t?

Circle it. That’s your bottleneck.

Then ask:

  • Is there a technology – AI, better hardware, better software – that can make that step dramatically faster or cheaper right now?

If yes: who gains access that currently can’t?

That’s your market.

So stop looking for a clever idea.

Look for a locked door – and ask who just got the key.

Every week I share one observation from the San Francisco startup ecosystem and break it down so you have a better shot at building the next unicorn. Follow along for more.

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Why ‘One Step at a Time’ Is Killing Your Startup

The tour ended a while ago.

We’re in the middle of interviews for the 2026 batch, and while that process runs in the background, Founders Compass is back to its regular format: weekly insights from SF’s startup ecosystem that helps you get from idea to traction.

This edition covers:

  • what you need to do before you even set foot here

  • one of the biggest lies you’re told about building your startup

  • the trend that currently opens every door

    (read till the end for that one).

P.S. If you’ve already had your interview – say hello in the chat and share your experience
I read everything 😉

What I Wish I Knew Before Landing in SF

When I moved here, I assumed I’d figure things out once I arrived.

I was wrong.

SF is far more network and connection-oriented than I expected.

The work that actually moves you forward doesn’t start when you land – it starts in your inbox.

I came here unprepared, and I got hit.

I spent my first weeks walking around like a headless chicken, chasing the right people to connect with.

So here’s what the 2026 ReaktorX batch will be doing before flying to SF

(and you should too, wherever you go)

Reach out to people before you book the flight.

Let them know you’re coming.

Get as many coffee dates on the calendar as you can.


One of the biggest lies you’re told about building your startup

I call it the step-by-step myth.

The fear behind it is always the same:

If we do everything at once, it’ll break. We won’t be able to focus. We won’t do it well.

I hear it everywhere.

  • Founders talking to each other: “Let’s finish the landing page first, then start reaching out to customers.”

  • Investors talking to founders: “Finish your deck, then go pitch.”

  • Designers talking about product: “Stage one is onboarding. Stage two is the next iteration.”

It’s wrong because the point is not to do everything well, it’s to do it decently and fast enough to get momentum.

If you feel in control at every step, you’re moving too slow.

Here’s how it should actually go:

  1. Don’t finish the landing page, then reach out. Build the page while you’re already talking to customers, because their words will tell you what the page should say.

  1. Don’t finish the deck, then pitch. Pitch while you build the deck and while you sell to customers, because that’s how you find out what belongs in the deck.

  1. Don’t ship onboarding, then plan iteration two. Ship the whole app and improve it as you go. Six months in, you’ll throw it away and rebuild it better, but you can’t plan that rebuild today.

Avoid at all costs the “Step by Step Framework”, focus on building with agility instead.


From ElevenLabs to Your Grandma – the Voice Market Is Wide Open

And I’m about to tell you how to use it to your advantage.

Five years ago, if you told me I’d be talking to my computer and it would go search Google for me, I’d have said you were crazy.

Now, I’m seeing voice startups everywhere.

Whisperflow, Granola, Smallest, Lightfield, everyone is using voice to help you interact with your devices, your data and the people in your life.

Most of the world still runs on phone calls.

Call centers, support lines, anyone over 40 still wants to pick up the phone and hear a voice answer back.

People literally walk down the street talking to their phone like it’s a person.

That’s one side.

Here’s the other, that’s most useful to you.

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The hype around voice is so high, that anyone building in the space gets invited to rooms that matter.

Now, you might not build a voice startup, but you should still add a voice layer to your product, then use that to get into every voice AI hackathon, event, and meetup you can find.

That’s a wrap for this week.

P.S. We’re building a private community with the strongest ReaktorX applicants, so even if you are not making it into this year’s batch, you’ll still be able to:

1. connect with the other bright minds I’ve come across during the CEE Tour

2. ask me questions directly

So, keep an eye on your notifications.

If this edition was useful, share it with a builder friend, so they stay in the loop with what’s actually happening in the San Francisco ecosystem too.

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Until next week, keep building!

Luca S.

Do You Have to Move to San Francisco to Build a Successful Startup?

The tour is done, and honestly so am I, after travelling to 15 countries for 6 weeks straight.

Every city showed up differently.

Each room had its own energy, from the curious builders in Bucharest to the people of Ukraine, who were my biggest surprise:

  • Belgrade showed up relentlessly, even on Easter Monday.

  • Zagreb was sharp.

  • Warsaw had audacity.

  • Budapest lived to compete.

  • Prague moved on its own.

Yet, every single room had ONE thing in common.

The talent.

Builders with incredible raw potential, ready to dedicate the next 10 years of their life to building a startup, straight from the most competitive ecosystem in the world.

The question remains though: do you have to move to San Francisco to build a successful startup?

I’ll answer that. But first, last and not least 👇

LVIV: The room full of surprises.

The good kind.

I arrived in Lviv having no idea what I’d be walking into.

The organizers told me: “just show up, we have the students, don’t worry about it”.

Turns out I walked into 50 builders who went straight into building mode the moment I said “let’s get going“.

So let’s clock the most memorable lessons:

  1. Sometimes the best thing you can do is make the room laugh.

There was a guy in the back who became a co-host, without even realizing it.

Every time I said something and left a pause for it to sink in, he responded from the back:

“damn. Oh my god. Can’t believe that.”

He turned the whole session into a stand-up comedy:)

And in doing so, he kept the energy in the room alive for everyone around him.

The person who can control the energy in a room controls a lot more than they think.

  1. Hold tight to the people who help you go beyond the surface level thinking.

In one of the brainstorming groups, one participant pushed back on every idea his teammates presented, not to criticize, but to go deeper.

He asked: “Ok, but how?”

The teammate would explain.

“Ok, but again, how? How do you actually do that?”

He wasn’t being difficult, he wanted the mechanism, the detail, the actual plan.

This kind of pushback set the tone in the room: nobody could hide behind vague concepts.

Everyone told each other directly: “I don’t understand what you’re doing.”

This is exactly the dynamic that separates teams that build something real from teams that brainstorm forever.


  1. Small gestures go a long way.

After the event, a girl walked up to me and handed me a gift: a poker chip from Las Vegas, from when she’d been part of Ukraine’s delegation at CES.

That’s a business lesson in itself: being memorable is about doing small gestures that leave a mark.

This is how you get remembered easily.

Now, the most asked question throughout the entire tour:

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Do you have to move to San Francisco to build a successful startup?

No.

But you have to show up there, at least once.

You have to walk into the rooms, shake the hands, sit across from the people who write the checks.

If you’re building B2B and selling contracts above $10,000, nobody wires that money to someone they’ve never met in person.

You need to be there. You need to inspire trust face to face.

If you’re building B2C, you can build from anywhere.

But the mindset shift that happens when you spend time in SF, surrounded by people who think in terms of global scale by default, is something you can’t get from a podcast or a newsletter.

And ReaktorX helps you get there by:

  • Spending two weeks in Bucharest, as you find your startup idea and build a prototype

  • Hosting you at the European Startup Embassy, once you land in San Francisco

  • Helping you get traction

  • Providing one-on-one mentorship

The applications are open until June 11.

Only 15 teams will be selected.

Apply HERE.

Shoutout to Ideas Center UCU for hosting us and making Lviv happen!

The tour was an absolute blast, but now I’m back to base for a while.

In the meantime, I’ll get back to the regular newsletter that will help any early stage founder go from idea to traction faster.

The Baltic Startup Ecosystem Is Booming. I Went to Meet the Builders Behind the Next Wave.

Baltic startups raised €607M last year.

Lithuania alone hit a record €238M, making Vilnius one of the fastest-rising startup centers in Central and Eastern Europe.

The ecosystem is producing unicorns. Bolt, Vinted, Nord Security. The numbers are hard to ignore.

On top of it, average age of AI unicorn founders dropped from 40 to 29 in just four years.

The world is finally waking up to what young founders can do, and ReaktorX is here for it.

We’re looking for the builders who have everything it takes to build the next unicorn, except the opportunity.

⚠️Applications to ReaktorX close on May 30th. Apply here.

Three cities, three different energies, and three lessons worth keeping.

Lesson 1: Stress-test everything, including your own assumptions.

Lithuania’s first instinct was to ask: “how do we beat every startup that’s already out there?”

That question set the tone for everything that followed.

Instead of pitching ideas and waiting for validation, they challenged every concept from the get go.

They already knew that when you ask what someone thinks of your idea, they think about you and stay polite. But, when you ask what’s bad about it, the idea becomes the subject, not you.

So there was no “your idea” in that room. Only: this is an idea, let’s stress test it.

Protecting your idea from criticism is the most expensive thing a founder can do.

Shoutout to basedspace for hosting and to everyone who showed up ready to deliver!

Lesson 2: Network=Networth

Riga was wired for connection.

It showed in the way they were more curious about the people in San Francisco than the details of the program.

They were also genuinely curious about the people sitting across from them and the ideas on the table.

At the end, their biggest takeaways weren’t about ideas or frameworks either, they were about the people they’d just met and the potential collaborations forming in real time.

The ability to walk into a room of strangers and leave with people who genuinely want to see you succeed is priceless.

The best founders understand that genuine relationships open more doors than skills alone ever will.

Shoutout to Rihards Piks and Startup House Riga for making it happen, and to Shipyard AI for hosting us!

Lesson 3: Pessimists are correct 99% of the time, but optimists build companies.

Tallinn was the antithesis of Riga.

The room was full of incredibly sharp engineers who could see why an idea wouldn’t work in no time.

The problem is, they thought so critically that whenever someone pitched a concept, someone else immediately explained why it would fail.

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I get it. The ability to spot flaws early is exactly what makes them incredible engineers in the first place.

Early on, this kind of thinking led me to kill startup ideas before testing them and cost me contracts I could have won.

Once I switched to optimism, the number of doors that opened and the numbers of projects I shipped increased exponentially.

The truth is, pessimism is a downward spiral: the longer you stay in it, the harder it is to see what’s actually possible.

Become a ‘YES, and’ person. The kind who spots what’s broken and builds something better because of it.

Shoutout to Ruum and Wave Ventures for making Tallinn happen!

In short: Vilnius stress-tested every idea. Riga came to connect. Tallinn questioned whether any of the ideas would work.

And all three had talent that’s genuinely hard to find anywhere else:

⚠️If you’re an LP looking for early access to ReaktorX, DM me on LinkedIn.
  • A builder who had already helped scale a startup to 900 users (at 19)

  • A founder who won the same hackathon three years in a row.

  • A solo developer building an anti-fraud algorithm that detects phishing messages.

  • An engineer who had helped startups reach millions in ARR.

  • A 25-year-old PhD student leading an international AI olympiad team.

  • Founders of six-figure agencies.

  • Engineers from YC-backed startups.

  • Multiple hackathon winners.

P.S. To the founders who stood out at the Brainstorming Parties or in their application: you’re not going unnoticed.

I’m building a private group for the best performers across all 15 countries. Details drop right after the application deadline.

We’re locking in the whole CEE Tour with the next report. Make sure you Subscribe, so you don’t miss out on what’s next:)

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The Ones Who Bend the Rules Are Usually the Ones Worth Betting On

You’re almost all caught up with the notes from the CEE Tour.

Today, we cover stops 10/15 and 11/15 ✅

Until now, the narrative has been consistent: there’s an application filter to select the participants, and once they’re in, I set the scene and watch how they operate.

Poland didn’t follow the script:)

The most memorable people in the room aren’t the most compliant. They’re the ones who show the world why the rules don’t apply to them.

Here are the most important lesson:

1. If the door is closed, break in

One applicant submitted her entire application in Polish, instead of English.

So, naturally, I rejected it.

She turned to the person who recommended her and showed up anyway.

Glad she did, because she was the best profile in the room: creative, collaborative, and full of energy.

After the event, she stayed behind and asked all the right questions:

“I have this concept, you’ve worked in this industry, what do you think, how should I approach it, who should I be talking to?”

She treated the rejection as irrelevant information and acted on what she actually wanted.

If she hadn’t, I would have accidentally skipped exactly the type of person we’re looking for.

In the context of building a company, this behavior is what gets you ahead.

If you’re an LP looking to plug in early, DM me on LinkedIn.

2. Make the context adapt around you, not the other way around

Then there was the girl who arrived late.

She was building a smart posture patch: you put it on your back and it vibrates every time you slouch.

During the brainstorming session, I heard her say:

“I don’t care about any of these problems. I’m here because I need feedback on my startup.”

At first, it bothered me, but then I realized:

The best founders don’t adapt to the context, they make the context adapt around them.

So she went ahead and pitched her startup.

P.S. To the top performers from all 15 countries: you’re not going unnoticed. I’m building a private community for you. Stay tuned to find out how you get in.

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The Tale of Two Cities

Both rooms were filled with extraordinary profiles:

  • A 25-year-old PhD student leading Poland’s international AI olympiad team

  • Two founders of six-figure agencies

  • Engineers from a YC-backed startup

  • Multiple hackathon winners

  • A triple olympiad medalist

  • Ex-Meta, ex-Google

Most participants came straight at me with one agenda: find out who I actually am and whether I’m worth listening to:

“You say you invest, you say you do things, but what startup are YOU building?”

I walked them through my track record: what startups I’ve built, how they evolved and which ones I sold.

Yet…that wasn’t enough. They wanted a list of the investors who backed me as well:)

There was no space in that room for blind trust or performative politeness. And I didn’t just tolerate that energy, I came here looking for it.

Because a founder who doesn’t question the investor in the room won’t question the assumptions killing their business either.

The founders who build something real are the ones who do their due diligence on everyone, including the person running the event.

Shoutout to InQube, Emerging Founders , This Is The World, SMOK Ventures and Kolektyw3 for making Poland happen!

The applications for ReaktorX are open. Click here to apply!

The Next Unicorn Might Come From the Same City That Built Apify

Trip Status: 9/15 Cities ✅

If you don’t know yet, I crossed 15 countries to discover and invest in the top 1% builders U25 from CEE before anyone else.

But…let’s rewind to why

CEE founders are incredibly well-prepared and developed, yet most of them aren’t even aware of that.

💡If you’re an LP looking for early access to ReaktorX, DM me on LinkedIn.

The speed at which they learn, adapt, and think problems all the way through is extraordinary.

What they’ve been missing is the infrastructure to convert that talent into global companies.

So, with every stop, we find them early, cultivate that raw talent, and plug them into the SF ecosystem.

This time, straight from the Apify office in Prague.

Apify didn’t get the memo about CEE founders not being ready for the global stage.

They just went ahead and built a company trusted by Siemens, Microsoft, Groupon and 25,000+ customers worldwide.

This is one of Europe’s fastest growing tech companies, and our young builders stepped with both feet into the startup world straight from their office.

*Apify organizes the $1M Challenge for developers and hosts Prague Crawl, the first web scraping and automation conference in Czechia, becoming the global reference point for the industry.

The tools to build globally are being built right here in Europe. Apify is proof of that.

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PRAGUE: The room that moved on its own

Maybe it was the “I’m the next Unicorn of Europe” energy.

Maybe it was the brainstorming session at Golden Hour.

Or maybe it was the fact that these builders aren’t waiting for permission to be great either, since…

Nobody waited to be told what to do. They moved, they questioned, they verified.

I mixed real, validated problems with some I made up for the brainstorming exercise.

They immediately called out the fake ones, pushed back, questioned the assumptions, asked where the data came from.

That’s critical thinking operating at full capacity:)

The ability to question the question is the clearest sign of founder material. Their brain was wired for proof and validation.

Three behaviors stood out that you won’t find by just reading their CV:

  1. The best leaders don’t take up the most space. They make more of it.

Prague had four of them.

Every time someone new approached a group, they opened the circle, made space, and pulled the person into the conversation.

When they spoke, they made eye contact with the newcomer and spoke for them too.

That’s not a skill most people are taught. It’s a social intelligence that makes a founder someone people want to work with, invest in, and follow.

💡Applications to ReaktorX are OPEN. Click here to apply.

  1. High agency means knowing what you need and going to get it, without being asked.

I told them to form groups, as usual.

But after they finished with one idea, they switched groups on their own.

They just went: “I’ve gotten what I need here, let me go find the next conversation.”

The ability to self-direct, to identify what you need and go get it without someone managing you, is one of the clearest signals of a founder mindset.

  1. Before you take advice from someone, verify they’ve actually done the thing they’re telling you to do.

After the event they took me out for a beer and asked to see my startup.

I pulled out the gaming platform prototype, they tested it and asked me questions about it.

That’s due diligence: they weren’t just absorbing information all evening, they were evaluating the source.

Smart move:)


Yet, what impressed me most was how they worked together.

They were asking each other real questions, building on each other’s thinking, and actually listening to the answers.

Empathy combined with the technical ability to execute is a combination worth paying attention to.

Shoutout to Michelle Macias Mendez and Jan Čurn for hosting us and making Prague possible!

See you at the next Debrief;)

CEE Is Sitting on a Goldmine of Talent That Keeps Getting Harder to Ignore.

Trip Status:

7/15 and 8/15 Cities ✅

(Track live where I am: here)

Eight countries in, and the talent keeps showing up in ways that surpass all expectations.

Not because of the ideas, the ideas are rarely revolutionary at this stage.

It’s the profiles. It’s how they think.

It’s the fact that a room of 15 people can feel like 50 because every single person in it has something to prove and the track record to back it up.

Zagreb and Budapest were two of the strongest rooms on the tour so far.

High performers who are competitive enough to win, collaborative enough to make others better, and hungry enough to show up even when the conditions aren’t perfect.

Between two cities, this is what was sitting in those chairs.

  • Olympic medalists in Math, Info and Physics.

  • A national boxing champion.

  • A girl with two research papers presented at an electronics convention. A philosophy olympiad winner.

  • Hackathon organizers.

  • A builder who trained a neural network to detect tumors.

  • Another who built an integrated agent system from scratch.

  • Four high schoolers with 2,000 users on a waitlist

  • A STEM gold medalist and system architect who worked on algorithms and superclassifications.

Up close, these are the 2 GOLDMINES:

ZAGREB, Croatia: The room that caught me lying

I mixed real, validated problems with some I made up for the exercise.

With no real data behind them and no evidence anyone had actually experienced the problem.

Just well-framed questions that sounded plausible.

Zagreb caught them.

They pushed back, questioned the assumptions, asked where the data came from.

Most people accept the frame they’re given. They didn’t.

That alone put them in a different category.

Then one of them found out I’m the one who makes the selection decisions, and he tried to..BRIBE me:)

Not literally, but when he found out I’m the one who makes the selection decisions, he switched into founder mode: who is this person, what does he like, how do I build a relationship with him, what do I need to do to get into ReaktorX?

Problem identified, decision maker located, relationship strategy activated.

What impressed me most was how they worked together.

Individually, each of them had a strong competitive spirit.

But THE MOMENT they started working in groups, that competitiveness turned into pure collaboration.

Not “here’s my idea, fight me.” More like: “I think this works, and here’s what I’d change to make it even better.”

One of them was building a connection app, and we ended up talking after the event and worked out together that Zagreb is never a big enough market for what he’s building.

There are five million people. If you narrow the target, statistically, you’re looking at a business worth tens of thousands of dollars, not hundreds of millions.

He got it immediately, and that’s the kind of thinking that scales.

I stayed way longer than planned.

Missed my bus to Budapest.

But..completely worth it.

“Critical thinking isn’t just about finding the right answer. It’s about questioning whether you’re solving the right problem.”

BUDAPEST, Hungary: I needed to be in this room more than they needed me.

I showed up running on empty. No sleep, no food, missed my bus out of Zagreb.

There were 4 high schoolers in the corner building a Sidequest Platform, where you find activities to do with friends.

Great concept, great positioning, and…2,000 users on a waitlist.

Then I noticed one participant with a notebook, writing everything down.

One. Across. Eight. Countries.

He didn’t miss a single thing.

Turns out he is an olympic medalist. Very analytical, tactical, attentive to every detail.

Then there was a gold medalist (STEM Olympiad) working on algorithms and superclassifications.

Incredible profile, but what made him stand out wasn’t the CV.

He asked the right questions, stayed curious and also knew how to joke around.

It’s not enough to be technically sharp if you don’t also have social skills.

At the end of the evening, someone asked where they ranked against the other countries. Not to fish for a compliment, but to understand where they stand. That’s healthy competitiveness.

That’s the kind of question a founder asks.

“The best founders want to know where they rank so they know exactly what to work on next. That’s a fire that can’t be extinguished.”

None of it would have happened without Adam Domokos, who pushed for the event without anyone asking him to. When someone cares that much about making something happen before they even have a reason to, that tells you everything about how they’ll run a company.

Shoutout to our Zagreb and Budapest partners: Farseer, SQ Capital, KUT, Startup Hungary, Portfolion, Interactive Venture Partners and STRT Holding for making these events happen!

Eight countries down. Seven to go.

The talent was always here. Most people just weren’t looking hard enough.


The Debrief after each stop lands right here.

Subscribe so you don’t lose the momentum.

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If you’re a builder ready to take the next step or an LP looking for early access to ReaktorX, DM me on LinkedIn.

A Bad Pattern Got Passed Down to Our Generation. These CEE Builders Are Doing the Most to Break It.

Time to clock the breakthroughs.

Trip Status: 1/3 of CEE ground covered ✅

(Track live where I am here)

One pattern keeps showing up…and it has nothing to do with talent.

Thirty years ago, the parents of this generation were told: if you stand out, you make yourself a target, so stay in your lane.

That was the survival protocol.

Today, if you don’t stand out, you don’t exist.

The pattern is sitting on the shoulders of a generation that’s playing by rules that no longer exist.

This tour keeps showing me that many of them are done with walking in the same footprints…

BELGRADE: Showing up is the first act of defiance

People showed up on the second day of Easter.

That alone tells you a lot about their focus and willingness to go the extra mile.

No wonder Eastern Europeans are known for their work ethic and resilience:)

What I loved about these builders:

They didn’t just pitch ideas, they thought them all the way through. Concept, implementation, go-to-market.

That level of depth, in a brainstorming session, was impressive.

Combine that with deep industry knowledge and you get the standout of the evening.

Two girls in cybersecurity.

Pragmatic. Deeply knowledgeable. Aware of who the right people are and where to find them.

“Deep insights into the market show up as a massive advantage.”

SARAJEVO: Where the ceiling started rising

The room was at full capacity. People showed up well-dressed and with their serious attitude on.

I got asked about mistakes I made, what I’m building, what happened to our portfolio companies.

Good thing I had Milan Samardžić and Igor Golub from ExPi there to cover the last part 🙂

What struck me was how fast they shifted gears once they understood that the world flipped 180 degrees from what used to work to what’s needed now.

A lot of “well… when you put it that way” moments in that room.

Here’s what actually shifted:

  • From “I need a certificate” to “I just need to start”

A girl asked where she could learn robotics and bio-engineering.

Wanted a place that gives out a certificate.

But..entrepreneurship doesn’t ask what credentials you have. The internet is free.

  • From “let someone else handle it” to “take the hardest task”

A student told me his team of four had one person doing all the work on a procedural generation project in Godot. The others were just watching.

I told him: split the work in four and take the hardest task. The procedural height map generation. It was the opposite of what he’d planned.

  • From “I can’t get go to Harvard” to “is it even worth it anymore?”

I asked the room how many had applied to Ivy League Schools. Nobody did, so I asked why.

One student said “finances”.

Another one “I don’t think I’m good enough”.

Then a guy in the front row said “It’s not relevant anymore.”

He’s right. Here is why:

The Debrief after each stop lands right here, so might as well Subscribe.

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Every builder needs to understand this 👇

Each industry has its own metric:

  • In SaaS, it’s your follower count on X and the users you report.

  • In engineering, it’s your GitHub.

  • In marketing, it’s your Instagram or the brands you’ve worked with.

Your job is to show up there, consistently.

And at every contract closed, client landed, or feature shipped, you let the world know.

So, if you’re a builder ready to take the next step, or an LP looking to get early access to ReaktorX, DM me on LinkedIn.

Stop looking for a co-founder. You’re probably looking in the wrong place.

Tour status: 5/15 countries ✅

We’re reporting back from Bulgaria and Skopje, and for a good reason.

The advice has been the same for ages: find your co-founder early, align on vision, lock in equity, and move together.

It made sense when your options were limited to the people in your environment.

It makes less sense when you’re about to fly to SF for a month alongside 15 teams.

Here’s exactly why:

Bulgaria: the analytical room

⚠️Spoiler alert:

Christo Peev, the entrepreneur who built and sold a company for $10 million, wants to build a pre-acceleration program in Bulgaria. The winner of that program gets a guaranteed spot in the 2027 ReaktorX batch.

There were 35+ builders set on solving problems using their analytical thinking and reasoning.

Here’s what they actually did, so you understand what an investor is observing when they evaluate you:

Reached for frameworks

One of them dropped “design thinking” mid-conversation. He didn’t use it correctly, but that’s not the point.

These are students with no formal startup training. Knowing the framework exists and reaching for it anyway already puts you ahead of most people in the room.

Questioned the question

A group was working on how to help athletes train for longer. One of them, an athlete himself, stopped everyone and said: the problem isn’t about training longer, it’s about recovering faster.

And he wasn’t the only one. Most of them were looking at the questions on the table and said: this doesn’t sound right, I think the actual problem is somewhere else.

That capability, to question the question, is one of the clearest signals of developed critical thinking. Most people accept the frame they’re given.

Landed on conclusions on their own

At the debrief, one of them pointed out that working in a large group was a mistake. He should have joined a smaller one, because they moved faster and talked more bluntly.

I asked him: so why did you stay in the large group?

“Comfort”

Correct. And what’s the lesson? Leave comfort behind.

In the large groups everyone is looking for consensus. As an early stage founder, you want a small group of exceptional people who will tell each other the truth.

But…

Analytical intelligence without creative range gets you a very well-executed product that doesn’t stand out.

Skopje: the room that turned a jacuzzi into a gaming spot. Literally.

It was the most unique room I’ve stepped into on this tour. These builders were high in EQ and creativity, and it showed in the way they solved problems and interacted:

The idea that redefined how we travel

One guy came up with the concept of an app where you plan a trip, save it as a template, and whenever someone else copies your trip, you earn a commission and they receive discounts.

The concept would be a unique travel experience based on real trips from real people, not influencers or travel guides.

How a small gesture will get you remembered

At the end of the evening, one of the participants found me and said: “I saved you two of the chocolate rolls, I noticed you liked them and didn’t get to eat many”.

She noticed a small thing that cost her nothing to act on, and that got her remembered.

That ability to notice what people need before they say it is the same ability you use to find product-market fit.

Yet…

Creative range without analytical intelligence gets you a pitch deck that sounds good but doesn’t translate into practice.

Two extremes complete each other 🤝

Bulgaria thinks in solutions. North Macedonia thinks in possibilities. Neither is complete without the other.

And yet if I had asked everyone in both rooms to find a co-founder before applying, most of them would have paired up with the person sitting next to them.

Blagica said it better than I would have:

Don’t tie yourself to someone from your city when you might find the perfect co-founder in SF, or in the batch.

That’s why I actually prefer that you apply solo.

The tools available to a solo founder in 2026 make it possible to build, validate, and get to first revenue without needing a second person to split the work.

Find the right person once you know what you’re building and what you actually need from them.

If you’re a builder ready to take the next step or an LP looking for early access to ReaktorX, DM me on LinkedIn.

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U25 and thinking you have founder DNA? Here are the tells.

Tour Status: 2/15 Cities ✅

Chișinău was a blast. 40+ students asked question after question, dove deeper at every turn, and pushed back on ideas without hesitation.

No wonder so many top companies were founded by people from the CEE region.

Now imagine recruiting them early, cultivating that raw talent, and flying them to SF where the environment works in their favor.

Oh wait, we’re doing exactly that 🙂

The biggest advantage these founders have over anyone else is their speed of learning and ability to adapt.

They knew nothing about the exercise going in.

I gave them 40 minutes: 10 to think individually and write down their ideas, 30 to work in groups.

They asked a few questions upfront to understand the rules, and then they got to work.

With no hesitation, they adapted to the scenario, the ideas, and the situation as we went on.

Most of them aren’t even aware of how good they are.

Here are the traits I look for:

1. Curiosity

The key to building the right solution is being genuinely interested in the problem you’re solving and the people experiencing it.

One group was working on a problem involving athletes and didn’t think to ask if anyone in the room was actually an athlete. I pointed that out and walked away. Under three minutes later, I heard one of the girls from that same group ask: “Has anyone here personally experienced this problem?”

She didn’t wait to be taught twice.

2. Intelligence

It shows up as the ability to think deeply and connect the dots between everything happening around you.

There was a guy in the room and every time he spoke, people turned to listen. He didn’t just share a conclusion, but walked everyone through the entire thinking process that got him there.

That tells me I can spend two weeks with you and by the end of it, you’ve learned everything you need to start building.

3. High Agency

Thinking for yourself, learning things nobody told you to learn, and always finding a way forward.

One girl disagreed with something I said and wanted to approach the problem differently. Perfect 🙂

Another wanted to go from being introverted to extroverted. I told her to take acting classes. That shows willingness to get over your fears for the greater good:)

Then there was a team building a democracy tracker, built on blockchain. They want to make voting transparent and easy to verify.

Who can say young people are not interested in politics now?;)

Another team was building AI video detection for journalists to cross-verify news before publishing. They already had 3,000 users.

That’s high agency. You don’t wait for permission to take action.


I personally came to SF one year ago with no brand, no network, just my experience and the figure-it-out gene.

Now I get to travel to 15 countries, recruit the top 1% talent, fund them, and fly them to SF to build global companies from day one.

📍Next stop? Already in Sofia, Bulgaria

( but you can track me live here )

The Debrief after each event lands right here, so might as well subscribe.

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If you’re a builder ready to take the next step, a partner who wants to plug in, or an LP looking for early access to ReaktorX, DM me on LinkedIn.

P.S. Huge thanks to Artcor Creative Center for hosting us!