July 2026 Cohort — 4 spots remaining out of 8 · Applications close June 20, 2026 …
10M+ ARR — frameworks éprouvés · Co-fondateur Sortlist · 9 marchés ouverts · 3 M&A réalisés · 100+ founders accompagnés
Programme · 90-day intensive · Cohorts limited to 8–12 founders

Founder OS™

The system that transforms overwhelmed founders into CEOs who can scale a profitable company without becoming the bottleneck of their own growth.

90-day intensive.

Built on frameworks used to build and scale a tech company to 10M+ ARR.

For founders and CEOs who want to:

  • accelerate growth
  • increase profits
  • structure their organisation
  • improve execution speed
  • regain strategic control
  • stop being the bottleneck in their own business
Apply to Founder OS™ Application required · 4 spots remaining
Thibaut Vanderhofstadt
Built by Thibaut Vanderhofstadt — co-founder of Sortlist, scaled to 10M+ ARR across 9 markets. Operator, not theorist.
90 Intensive days
5 Systemic modules
10M+ ARR — proven frameworks
8–12 Founders per cohort
The diagnosis

Most companies don't stagnate because of the market.
They stagnate because their CEO becomes the bottleneck.

The founder:

  • decides everything
  • fixes everything
  • validates everything
  • navigates blind
  • works relentlessly
  • unknowingly slows growth

Result:

  • operational chaos
  • slow execution
  • dependent team
  • fragile profitability
  • unstable growth
  • permanent mental fatigue

The problem isn't your ambition.

The problem is your Operating System.

The new reality

Companies that scale sustainably don't run on heroes.
They run on systems.

Founder OS™ was designed to install a decision, execution, and leadership system capable of evolving:

  • the company
  • the team
  • the CEO themselves

Goal: Build an organisation that scales without depending on the founder's chaos.

"The company must be able to operate without you in every decision, every call, every deliverable."
— Core principle, Founder OS™
Built on best practices from SaaS and frameworks used to scale a tech company to 10M+ ARR.
The transformation

Before. After.

Before Founder OS™
  • you work hard but the company slows down
  • your team depends on you too much
  • decisions take forever
  • priorities keep shifting
  • you lack clarity
  • profitability stays fragile
  • you're permanently in reactive mode
After Founder OS™
  • you operate through systems
  • your team executes faster
  • priorities are clear
  • decisions become simpler
  • the company gains autonomy
  • profitability improves
  • you become strategic again
Instant access

Start now.
No application required.

Two self-serve products to start immediately and measure the impact of Founder OS™ on your business.

Instant delivery

CEO Bottleneck Scorecard™

€47 instant access

8-dimension self-assessment. Instant PDF report with personalised analysis. Identify your top 3 growth bottlenecks.

  • ✓ 8-dimension self-assessment
  • ✓ Instant PDF report with personalised analysis
  • ✓ Identification of your top 3 growth bottlenecks
  • ✓ Instant digital delivery
Buy the Scorecard — €47 → Try the interactive scorecard →
Most popular

Velocity Execution Toolkit™

€297 instant access

Sprint templates, scorecards, operational cadence systems. Accountability frameworks. Decision systems.

  • ✓ Notion sprint templates (ready to use)
  • ✓ Team performance scorecards
  • ✓ Operational cadence frameworks
  • ✓ Accountability systems
  • ✓ Decision systems
  • ✓ Instant digital delivery
Buy the Toolkit — €297 →
The mechanism

Founder OS Method™

An Operating System designed to transform a founder into a CEO capable of scaling sustainably.

The system combines:

strategic audit operating systems velocity execution profit & revenue optimisation CEO leadership accountability systems thinking execution cadence

Built on SaaS best practices and frameworks used to scale a tech company to 10M+ ARR.

01

Founder OS Audit™

Full diagnostic: where you're losing energy, money, and growth. Audit: revenue, profitability, acquisition, team, execution, structure, leadership, process.

02

Operating Systems

Design and deployment of your operating systems. The company learns to run without you.

03

Velocity Execution

High-velocity weekly sprints. You execute what matters, eliminate the rest.

04

Profit & Revenue Optimization

Margin engineering, profitability levers, pricing optimisation, acquisition, conversion, resource allocation.

05

CEO Leadership

You stop being the best executor. You become the leader who builds leaders.

06

Accountability

Accountability structure that guarantees execution. You no longer carry it all alone.

07

Systems Thinking

You think in systems, not isolated problems. Every decision reinforces the whole.

The programme

5 modules.
One complete transformation.

Module 1

Founder OS Audit™

Growth leverage mapping

Identify the real bottlenecks. Full audit: revenue, profitability, acquisition, team, execution, structure, leadership, process.

Result: a clear map of your growth levers.
Module 2

Strategic Clarity™

Aligned execution

Create a clear direction. Work: vision, mission, positioning, focus, leverage, strategic KPIs.

Result: a company that knows exactly what to execute.
Module 3

Revenue & Profit Engine™

Profitable growth machine

Grow revenue AND profit. Optimisation: pricing, margins, acquisition, conversion, resource allocation, productivity.

Result: a more profitable growth machine.
Module 4

Velocity Execution System™

Organisation without chaos

Multiply execution speed. Implementation: scorecards, accountability, sprint planning, operating cadence, ownership, decision systems.

Result: an organisation that executes fast without chaos.
Module 5

CEO Evolution™

CEO ready for the next level

Transform the founder. Work: leadership, executive posture, communication, decisions, energy management, anti-burnout.

Result: the CEO capable of sustaining the next level of growth.
The elite experience

Elite infrastructure
for your transformation.

🔬

Weekly Velocity Reviews™

Every week: KPI review, accountability, prioritisation, velocity tracking, critical decisions. Goal: force execution.

⚔️

CEO War Rooms™

Every two weeks: hot seats, strategic problem-solving, operator feedback, live frameworks, bottleneck resolution.

🤖

Founder OS AI™

An executive AI designed to: help prioritise, challenge decisions, detect bottlenecks, accelerate execution, maintain strategic clarity.

Included in Founder OS™

€3,988 in bonus value.
Included at no extra cost.

Founder KPI Dashboard™

€997 Included

Real-time dashboard for your critical metrics. Revenue, CAC, LTV, churn, margin — all in one place.

AI Executive Assistant™

€1,497 Included

Your executive AI assistant. Meeting preparation, data analysis, CEO report writing.

Founder Hiring System™

€997 Included

The complete hiring system for founders. Job descriptions, interview process, candidate scoring.

Execution Sprint Templates™

€497 Included

90 days of weekly sprint templates. Every week structured for maximum execution.

Total bonus value: €3,988 — Included in Founder OS™
Target profile

Who it's for. Who it's not.

Founder OS™ is for you if you are:

  • tech founder
  • SaaS CEO
  • structured agency
  • growth-stage company
  • ambitious operator
  • coachable, demanding leader

Founder OS™ is not for:

  • dreamers
  • tourists
  • people looking for quick hacks
  • founders who refuse to execute
  • entrepreneurs who want to delegate accountability
The operator behind the system
Thibaut Vanderhofstadt
🏆 Deloitte Technology Fast 50
🚀 Trends Gazelles
🎓 Solvay Business School
🌍 StartLab Brussels

Who is behind Founder OS™

Thibaut Vanderhofstadt

Co-founder of Sortlist · Fractional CEO Consultant · Operator

Thibaut co-founded Sortlist from scratch and scaled it into a European B2B marketplace with 100+ employees across 9 markets, €10M+ ARR, and 3 completed M&A deals — including the acquisition of German competitor AgenturMatching. He raised €11M from a 100% Belgian investor base.

After 11 years as CEO, he's now advising 100+ B2B tech founders — applying the same execution frameworks and operational systems he used to build Sortlist to help founders stop being the bottleneck in their own companies.

Founder OS™ is not a coaching program. It's the operating system he built at Sortlist — systematised and packaged for founders who want to scale without becoming their own ceiling.

10M+ ARR built at Sortlist
9 markets opened
100+ founders advised
"The system worked at Sortlist because we stopped relying on heroics. Every execution lever, every decision framework in Founder OS™ was stress-tested at scale — not invented in a workshop."
Recognised by DELOITTE FAST 50 TRENDS GAZELLES STARTLAB BRUSSELS
🛡

Execution Guarantee™

If you seriously apply Founder OS™ for 90 days and see no measurable improvement in:

  • clarity
  • execution speed
  • structure
  • profitability

we continue working with you until the system unlocks.

Next cohort: July 2026
Applications close in: …
4 spots remaining out of 8–12 founders maximum
Investment

Founder OS™

7 500€ HT
4 500€ HT
-40%

or pay in instalments

Application required.

  • ✓ 90-day intensive programme
  • ✓ 5 complete modules
  • ✓ Weekly Velocity Reviews™
  • ✓ CEO War Rooms™
  • ✓ Founder OS AI™ (90-day access)
  • ✓ €3,988 in bonuses included
  • ✓ Execution Guarantee™
Cohorts limited to 8–12 founders · Selection by application only.

Apply to Founder OS™

Fill out the application form. We'll get back to you within 48 hours for a qualification call.

Application deadline: June 20, 2026

Start my application →
4 spots remaining — July 2026 cohort
Application

Apply to Founder OS™

Take 10 minutes to answer honestly. This form lets us verify whether Founder OS™ is the right fit for you — and whether you're the right fit for Founder OS™.

General information

Business diagnostic

Qualification

Application processed within 48 business hours. 30-minute qualification call if your profile matches.

Deadline: June 20, 2026 · July 2026 cohort · 4 spots remaining

We don't scale companies.

We transform founders
into CEOs who can scale.

Apply to Founder OS™ →