About

Why I'm doing this.

People keep asking me the same questions. How do you get into a startup? What should I expect? Is it worth leaving corporate? What does equity actually mean?

I don't have all the answers. But I've been living it, and I keep notes.

The name says it all. A chicken β€” not fully hatched, still figuring it out β€” trying to build something worth building. The entrepreneur part is the direction, not the destination. Chickentrepreneur is the honest version of the startup journey: messy, early-stage, learning in public.

Most of what I share feels obvious to me now. It wasn't six months ago. That's exactly why it's worth writing down.

For a long time I learned before I acted. At some point that became a brake. So I flipped it: ship first, find the pattern after. What you'll find here are the patterns I pulled out of the mess.

Chickentrepreneur is where I share what I've learned from being on the ground at tech startups in Europe: the frameworks that hold up, the mindset shifts nobody tells you about, the career mechanics most people figure out too late, and the tools that genuinely move the needle.

This is not a guru's take. It's a fresh pair of eyes, shared in real time. If you're thinking about joining a startup, just started one, or moved from corporate and feel like you're drinking from a firehose: this is for you.

The path so far

Now
Customer Success Manager
Karomia Β· AI Β· Sustainability
Technical CSM role: front door to clients, bridge to product, sales and tech. Learning fast about product thinking, managing expectations, and building with AI on the ground.
AIProductCustomer success
Founded in parallel
Co-founder
FirstMovers Β· Belgium
The first and only community of young startup employees in Belgium. Workshops, events, mutual learning. A place where I learn as much as I teach.
CommunityNetwork
Same company, new role
Growth Marketeer
Tapio
Promoted internally. Learned GTM from scratch: campaigns, frameworks, and the bridge between sales and marketing.
GTMGrowthMarketing
First job
Founder Associate Β· CEO Right-Arm
Tapio Β· Carbon accounting software
Worked directly with the CEO across every function: ops, admin, HR, finance, strategy, team dynamics. The ultimate multi-hat role.
OperationsStrategy
First venture
Co-founder
Posted Β· MarTech, pre-AI
Built a content repurposing tool with Thibaut. Pre-AI, figured things out the hard way: PMF hunting, no-code building, bootstrapping decisions.
EntrepreneurshipGTMProduct
University
President, Junior Consulting Enterprise
LSMConseil Β· UCLouvain Β· Business Engineering
First taste of team dynamics, management and leadership. Soft skills I still use every day, now fully translated to the startup world.
Soft skillsLeadership

Where the knowledge comes from

🐣 FirstMovers
A community of ambitious young people navigating the same questions.
πŸ§ͺ Field experiments
Testing things, failing, adjusting. In real time, not in theory.
πŸ“– Reading obsessively
Newsletters, books, frameworks, first-principles thinking.
🀝 People further ahead
Founders, operators, career-changers. Everyone has a lesson.

Twice a month. Pure signal. 1 min of reading = 1 min of learning.

Start reading or pick what you want to learn first.

Start learning β†’
Constantin Claes
Co-founder of FirstMovers · CSM @ Karomia · 🐣