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Mabuma & Partners –

From Chaos to Clarity. Structure. Execution. Scale.

GEAR UP

Scale Smarter.

Execute Faster.

The COO You Want—Without the Full-Time Overhead.

Your startup is growing — but operational gaps can derail your momentum fast.

Unlock operational clarity, team alignment, and investor-ready execution before chaos sets in — without hiring a full-time executive.

Previously contributed to projects for companies such as

FIT CHECK

Is This Right for

Your Startup?

Early-stage momentum can quickly collapse without solid operational foundations. If you’re seeing any of these red flags, it’s time to act:


Operational inefficiencies slow execution.


Team misalignment leads to missed milestones.


Founders trapped in firefighting mode, not strategy.

Investor expectations outpace internal readiness.

OPERATOR

Meet Your Fractional COO: Dr.-Ing. Joffrey Mabuma

With 15+ years of academic and industrial experience in Germany across startups, B2B SaaS, and global enterprises, I help fast-growing startups move from firefighting to focused execution. 

From agile transformations to Objective Key Results (OKR) implementation and org design, I turn strategic goals into measurable outcomes - fast. I hold a Ph.D. in Computational Engineering and certifications in Operation Management, AI & Change Leadership - enabling me to simplify complexity and drive execution across teams. As a TEDx speaker and German Innovation Award winner, I bring hands-on leadership, operational clarity and immediate impact to every engagement.

Dr-Ing. Joffrey Mabuma

"I work with a select number of founders at a time to deliver deep operational transformations. Availability is limited to ensure personalized, high-impact leadership.

Let's build your startup’s future today — before scaling chaos sets in."

— Dr.-Ing. Joffrey Mabuma

CLARITY

How I Help Founders Scale Without Chaos

As a founder, you juggle multiple responsibilities — leading your team, managing investors, and driving product development. But as your startup grows, new challenges emerge:

  • Operational inefficiencies slow execution.
  • Team alignment becomes difficult as you scale.
  • You’re pulled into operations instead of strategy.
  • Investor expectations rise, but internal processes lag behind.

That’s where I come in. As a Fractional COO, I embed into your operations to streamline execution, build investor-ready systems, and help you focus on what matters most — growth.

EDGE

Why work with me

Startup success depends on execution — not just strategy. That’s where I come in. I don’t just advise; I join your team and turn plans into measurable results from day one.

With experience in both startups and corporates, I bring the best of both worlds: the agility of fast-growing teams and the structure of established organizations. This blend helps founders scale quickly — without losing control.

I’ve also worked between startups and large B2B clients, bridging lean execution with enterprise expectations. It’s how I help startups become investor-ready, scalable, and operationally sharp.

Fluent in English, German, and French, I support teams across DACH, France, and Benelux — founder-first, execution-driven, and built for sustainable growth.

IMPACT

Results that Matter

+33%

33 percent efficiency increase: Through targeted team restructuring,

I helped reduce inefficiencies and boost customer satisfaction.

+42%

42 percent faster execution: Implemented

Objective Key Results (OKR) frameworks across 20+ teams, improving strategic alignment and operational efficiency.

+56%

56 percent output and productivity increase with the conception and rollout of agile frameworks across project, business, IT and product management departments.

"One of Joffrey’s strengths is his focus on improving how we work. He’s consistently looked for ways to streamline our processes, making our day-to-day operations smoother and more efficient."

“Joffrey possesses outstanding expertise, particularly in leadership, communication, strategic thinking and process optimization.”

OPTIONS

Custom COO Packages for

Startups at Every Stage


Each startup is different, so we tailor solutions to fit your needs:

Advisory Sprint

Short-term, focused


4-12 Weeks

Org structure, investor readiness, agile setup, team alignement, traction metrics

fixed fee

Fractional COO

Mid-term, operational leadership


3-6 months,

1-2 days/week

Team growth, scaling systems

and profitability, process optimization or re-engineering

flexible monthly retainer

Interim COO

Long-term, leadership coaching


6-12 Months,

2-3 days/week

Crisis management, risk reduction, international rollout, process re-engineering

custom pricing

While our service packages are designed around key startup growth stages, we understand that every founder's journey is unique. That’s why we also offer customized COO solutions – built around your current challenges, goals, and scaling needs. Let’s shape the right approach for your situation.

MODE

Tech-Ready,

Founder-Focused

I integrate seamlessly into teams — maintaining continuity while delivering results. I’m proficient with key tools across CRM (Salesforce, SAP, Odoo, HubSpot, Zoho), project management (Jira, Confluence, Trello, Asana, Miro, Monday) and performance tracking (Perdoo, Workboard). For collaboration, I work confidently with Slack, Microsoft Teams, and Google Workspace. I also adapt quickly to custom systems and workflows.

Ready to Scale without the Chaos?

Fast growth is exciting — but dangerous without the right foundations. Protect your momentum. Strengthen your operations. Scale with clarity.

Act now to secure expert operational leadership. Based in Aachen, Germany — Serving clients across DACH, France & Benelux and global teams remotely.

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