Vision, Leadership and Innovation: The Cellulant Way

At Cellulant, leadership isn’t a job; it’s how we live. It’s in how we listen, show up for each other, and stay committed to our mission. We think big and act bold – because building Africa’s payment future demands it.

A Message from
our CEO

At Cellulant, we believe our greatest strength lies in the expertise and passion of our people. Peter O’Toole shares what sets Cellulant apart, from our innovation to the wealth of talent driving our success.

“Cellulanters go over and beyond, time and time again.”

Peter O’Toole  |    CEO, Cellulant

Meet our Leadership Team

Meet the team charting our course forward.
With decades of experience in technology, financial services, and business management,
they guide Cellulanters with heart, purpose, and boldness. 

Senior Leadership

Steering strategy. Setting the pace.

Peter O'Toole

Peter O'Toole

Chief Executive Officer

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Peter, our CEO, is a no-fluff, all-action kind of leader—decisive, strategic, and always two steps ahead. With 30+ years of globetrotting experience in finance, banking, payments and operations, he’s led everything from scrappy start-ups to global giants. When he’s not figuring out how to grow the business, he’s mentoring future CFOs, sinking shots on a pool table, or passionately backing Liverpool.

Susan Fouche

Susan Fouche

Chief People Officer

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Susan, Our Chief People And Culture Officer, Is The Powerhouse Behind Our People And Culture, Blending Heart, Grit, And Strategy In Equal Measure. A Former Ballerina, She Navigates Change With The Precision Of A Pirouette And Leads With A Deep Passion For Empowering People To Perform At Their Best.

Darren Makarem

Darren Makarem

Chief Financial Officer

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Darren brings a strong understanding of payments from the customer side. As former Global CFO at Agoda, he oversaw the company’s global payments network, managing annual transaction volumes of approximately $12 billion. In that role, he navigated multi-currency settlement, conversion rate optimisation, the need for reliable, high-uptime payment infrastructure and payment experiences that enable customer growth. .

Justus Poldermans

Justus Poldermans

Chief of Staff

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Justus is our Chief of Staff and resident master of getting things done. A multilingual powerhouse (he speaks six languages!), he’s the steady hand keeping projects aligned and moving forward at Cellulant. With a VC and strategy consulting background, he’s a trusted advisor to everyone, not just the CEO, and the quiet force turning plans into progress.

Sales Leadership

Opening doors. Closing deals. Driving growth.

Richard Gesimba

Chief Revenue Officer

Peter Kawumi

Senior Vice President (SVP)

Juliet Kariuki

Vice President: Telecommunication & E-commerce

Pieter Grobbelaar

VP: Sales Enablement & Performance Management

Aisha Luyima

VP, Regional Sales & Country Manager – Uganda & Tanzania.

Mary Mwangata

Head: Compliance & Regulatory Affairs

Product, Technology and Service Delivery

Keeping trust high and risks low

Anthony Hernandez

Chief Operating Officer

Michael Muriuki

Chief Product & Technology Officer

Catherine Wangechi

Vice President, Business Operations | Service Delivery

Risk, Compliance and Regulatory

Keeping trust high and risks low

Irene Koki

VP : Risk

Mary Mwangata

Head: Compliance & Regulatory Affairs

Hear from our Leaders

Get firsthand insights from the people shaping our vision and driving our success. In these conversations, our leaders share their perspectives on leadership, Cellulant’s unique strengths and what drew them to joining the team.

Together, We Build Bridges To Prosperity