Companies invest a great deal of energy in presenting a particular idea of their culture. However, the real version is simpler and harder to fabricate; it’s whatever people actually do when something goes wrong and there is no immediate reward for doing the right thing.

Culture starts the moment two or three people decide to work on an idea together. Contrary to popular belief, it’s not something you “add” or “retrofit” later, it grows out of how you treat each other, how you make decisions, and what you reward.

Gradually then, over time, that becomes either your unfair advantage or the reason you register for insolvency.

Arguably, the real question isn’t whether culture eats strategy, rather it’s how do you build a culture strong enough that you don’t need to keep reminding people what it is?

Investing in the private markets shouldn’t feel like a full-time job. 

Who has time for wet-ink signatures, back-and-forth WhatsApp messages, and asking your investors for their identity verification documents? 

Zest gives deal leads a modern way to execute their transaction processes and bring together their investors, which means a better experience for their participating investors. 

It’s why so many MENA deal leads choose Zest as the home for their investments. 

What follows is a structured playbook on “How to Build a Winning Startup Culture”, distilled from the lived experiences and unfiltered reflections of six MENA-based founders who’ve built, broken, and rebuilt culture the hard way.

We’ve broken this guide into six standalone pieces – each tackling a specific phase. You can dig into them sequentially or jump straight to what’s most relevant for where you are today.

Across these six parts, you’ll learn:

So whether you’re a first-time founder laying the foundation, or a scaling CEO trying to hold on to the spark that started it all, this playbook can hopefully function as something of an instructive field guide to building culture that lasts.

Table of contents

1. Culture starts with the founders

  • Why culture is a reflection of the founders

  • Leading by behaviour, not slogans

  • Building “founder mode” mentality

  • The dangers of inconsistency

  • Timing your value-setting: early vs. later

  • Authenticity over aspiration

  • Turning values into practical hiring tools

  • Avoiding “La La Land” culture statements

  • The power of founder behaviour under pressure

  • Balancing intensity with empathy

  • Why small habits matter (punctuality, follow-through, humility)

  • Making your actions the company handbook

  • Referrals, gut feel, and the “Americano test”

  • Avoiding mercenary hires during hypergrowth

  • Translating values into interview frameworks

  • Onboarding rituals that cement shared norms

  • Why open communication is cultural oxygen

  • Building psychological safety through trust

  • Radical transparency as a leadership philosophy

  • Navigating multicultural teams and feedback loops

  • Accepting that culture will evolve

  • Adding structure without killing soul

  • Diagnosing and fixing cultural “bugs” early

  • The reality of drift (and how to manage it)

Thank you once again to the wonderfully insighful: Mostafa Amin (Breadfast), Mark Chahwan (Sarwa), Julie Barbier-Leblan (Merit), Eslam Hussain (Invygo), Mohamed Al Fayed (Grubtech), Mohammad AlRazaz (OTO), for sharing their insights and experiences.

Now, let’s dig into it.

Step 1: Culture starts with the founders

Your startup’s culture begins on day zero with the founders’ own values, habits, and mindset. For all intents and purposes, in the very early days, the company culture is the founders’ culture

As Mohammad Al-Razaz, CEO and co-founder of logistics startup OTO, observes:

“If you are someone who’s loud, your culture is going to be loud. If you are someone who’s late, your culture will be late… So we [founders] sat together [asking] who are we, because in the beginning the company culture is purely the founders’ culture”

This means every strength or flaw you have as leaders will echo across the organisation. You can’t preach punctuality if you stroll into meetings 15 minutes late – your team will take lateness as the norm.

Culture emerges from the accumulation of small decisions; the way problems get raised, how feedback is handled, how people respond under pressure.

“As much as you want to put it down on a piece of paper… it doesn’t matter. It’s how the founders act… that’s the culture”

Not to go all CBT on you, but invariably the upshot is to start with yourself. Take time to identify the behaviours and attitudes you want your company to embody, and live them. In the early stage, team members will mimic the founders. If you’re preaching 9-9-6, you should be the first in and last out.

Mostafa Amin stresses that his team’s “founder mode” mentality was inspired directly by the founding team’s example. Breadfast’s founders loved tackling tough problems head-on, and they infused that into the culture:

“All of our colleagues, they are in love with the word ‘problem’… you need to love problems first to be able to solve them”

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