Constantinos Calios · Berlin

Built one.
Now helping build many.

From building my own company to backing the ones that come next.

Let's talk
Constantinos Calios
Who I am

Operator. Investor. Mentor.

Constantinos Calios

I built KoRo as CEO and scaled it over years — from a small team to a company with real weight. That phase taught me what carries a company and what breaks it.

Today I back the next generation of founders as a board member and mentor — calm, considered, no buzzword talk. What I pass on is first-hand operator experience, not textbook theory.

Track Record

Built, scaled, passed on.

KoRoFounded & scaled as CEOFrom a small team to a company with real weight.
8+Years of operator experienceBuilding, growth, and the hard calls in between.
10+Ventures backedAs board member, investor and sparring partner for founders.
BoardAdvisor & MentorBacking the next generation of founders.
Philosophy

Build a company, not a pitch deck.

I think in ecosystems, not projects. In markets, not products. Every industry is overloaded with the unnecessary — I strip it back to what matters and cut the rest. Substance over theater. The work over the wrapper.

Focus

Where I make the difference.

01

Old economy ↔ startups

Translating between the logic of established industry and the speed of young companies. I know both sides from the inside.

02

Operator experience

No theorist. Building, scaling, cashflow, team — the decisions you only understand once you've made them yourself.

03

International network

Access to founders, investors and industry partners across borders — and the judgment for when to use it.

Contact

Let's talk.

Board work, sparring, or a specific question — write me directly.