Writing on his LinkedIn page on 17th March, Serigne Dioum, the Group CEO, MTN Group Fintech, reflected on MTN’s FY2025 performance, where the numbers told a story few platforms on the continent can match.
Transaction value across MTN’s fintech ecosystem had surpassed US$500 billion, with the platform processing 23.3 billion transactions over the year.
Monthly active users reached 69.5 million, representing 10% year-on-year growth, while fintech revenue rose 23.2% to R30.3 billion.
Even more telling was the 40.5% growth in advanced services revenue, driven by the increasing adoption of payments, lending, and remittance solutions.
For Dioum, these were not just metrics. They were evidence of a structural shift. As he noted, the performance was “underpinned by sustained execution and investment,” reflecting the growing centrality of digital financial services in everyday life across Africa.
In many ways, these results capture the culmination of a journey he has been shaping since 2009—one that has transformed MTN’s fintech business from an emerging service into a continental financial infrastructure.
From engineering foundations to financial systems thinking
Dioum’s path into fintech was not accidental. Trained as a telecommunications engineer in France, with advanced qualifications from Telecom Bretagne and Eurecom Institute, he entered the industry at a time when connectivity itself was still expanding.
His early work at Siticom between 1999 and 2002 immersed him in the architecture of telecom networks, giving him a systems-level understanding of how infrastructure scales.
His transition to Orange took him into West Africa, where he worked in Mali on value-added services, data, and convergence. By 2008, as Director of Operational Marketing at the Orange Money Skill Center in Bamako, he was directly involved in early mobile money deployments.
At the time, the concept was still experimental, but Dioum recognised its potential to leapfrog traditional banking. Mobile networks, he saw, could become financial rails for millions.
2009–2013: Building the foundations at MTN
In November 2009, Dioum joined MTN as General Manager for Mobile Money in West and Central Africa, while also serving as Marketing Director for MTN Côte d’Ivoire. This was a formative period, long before mobile money became mainstream. The challenge was not scale, but viability.
Between 2009 and 2013, Dioum worked on establishing agent networks, designing simple and accessible financial products, and navigating complex regulatory environments.
Adoption was far from guaranteed, and trust had to be built from the ground up in predominantly cash-based economies. This phase laid the operational and structural foundations that would later support exponential growth.
2013–2022: Scaling to a continental platform
In 2013, Dioum moved into a Group-level role as Head of Mobile Financial Services, later becoming Group Executive for Mobile Financial Services.
This marked a clear transition from regional execution to continental scale. The focus shifted from building isolated market operations to creating a unified, scalable platform across MTN’s footprint.
The results of this decade-long scaling effort were substantial. By FY2022, MTN’s fintech platform had expanded to 16 countries, serving over 63 million customers and processing transactions worth US$221 billion annually.
These figures reflected not just growth, but the successful standardisation of systems, products, and partnerships across diverse markets.
More importantly, the nature of the business was evolving. Mobile money was no longer limited to peer-to-peer transfers. It was becoming a broader ecosystem, incorporating merchant payments, remittances, and increasingly sophisticated financial services.
From mobile money to fintech ecosystem
One of Dioum’s most significant contributions has been the transformation of MTN’s offering from a transactional service into a platform-based ecosystem. This required a fundamental shift in strategy.
The focus moved from driving user numbers to increasing engagement, from facilitating transactions to enabling economic activity.
The platform began to support merchants, integrate with financial institutions, and offer services such as lending and savings. This evolution positioned MTN Fintech as more than a telecom extension. It became a central player in Africa’s digital economy, connecting individuals, businesses, and financial systems.
2021–2023: Strategic integration at group level
In January 2021, Dioum was appointed Chief Digital and Fintech Officer, based in Johannesburg. This role expanded his mandate beyond fintech into MTN’s broader digital transformation agenda. He was now responsible for aligning fintech with the Group’s ambition to become a platform-based technology company.
This period was less about expansion and more about integration. Fintech was positioned as a core growth engine, closely linked to digital services, data strategies, and ecosystem partnerships. The groundwork laid during this phase would prove critical in unlocking the next stage of growth.
After Success, Then What? Francis Kamulegeya on His Aptly Titled New Book and Life Beyond Big Titles and Offices2023–2025: Leading at scale and driving value
Dioum’s appointment as CEO of MTN Group Fintech in January 2023 marked the beginning of a new phase. If the previous decade had been about building and scaling, this period has been about deepening and monetising the platform.
The FY2025 results highlight this shift clearly. Transaction value has more than doubled from US$221 billion in 2022 to over US$500 billion, while monthly active users have grown from over 63 million to 69.5 million. At the same time, the platform processed 23.3 billion transactions, indicating a significant increase in usage intensity.
Revenue growth has kept pace with scale. Fintech revenue reached R30.3 billion, up 23.2% year-on-year, while advanced services grew even faster at 40.5%, reflecting increased adoption of higher-value financial products. These figures suggest that the platform is not only expanding, but maturing into a more sophisticated financial ecosystem.
Understanding the scale: From growth to system
The progression from FY2022 to FY2025 provides a clear lens through which to assess Dioum’s impact. Transaction value has more than doubled, user growth has remained steady, and transaction volumes have increased significantly. This combination points to a platform that is deepening its relevance in users’ daily lives.
At 23.3 billion transactions annually, MTN Fintech is no longer just facilitating occasional transfers. It is enabling frequent, everyday financial activity at scale.
With 69.5 million active users, it has become one of the largest digital financial platforms on the continent. The US$500 billion transaction value underscores its role as a critical layer in multiple economies.
Leadership defined by execution
Dioum’s leadership style stands in contrast to the often disruptive narrative of fintech. His approach is grounded in consistency, discipline, and execution.
Rather than pursuing rapid but fragmented growth, he has focused on building systems that can scale reliably across markets.
This emphasis on execution is reflected in the platform’s sustained performance. Growth has been steady across key metrics, from users to transactions to revenue.
The ability to maintain double-digit growth while operating at such scale speaks to the strength of the underlying systems.
At the same time, his focus on ecosystem development has positioned MTN Fintech as an enabler rather than a competitor. By integrating with banks, fintechs, and merchants, the platform has expanded its reach and relevance without fragmenting the market.
Building financial infrastructure for Africa
The broader significance of Dioum’s work lies in its impact beyond MTN. The fintech platform he has helped build functions as a form of financial infrastructure across the continent.
It enables small businesses to accept digital payments, allows individuals to access financial services, and supports cross-border economic activity.
In many markets, mobile money has become the primary means of financial interaction. The scale of MTN’s platform, reflected in its US$500 billion transaction value and 23.3 billion transactions, illustrates the extent to which digital finance is now embedded in everyday life.
The road ahead
As MTN Fintech continues to evolve, the focus is likely to shift further toward depth and sophistication. The rapid growth in advanced services suggests increasing demand for products such as lending, insurance, and remittances.
At the same time, the platform’s scale creates opportunities for deeper integration with financial institutions and digital ecosystems.
The challenge will be to maintain growth while increasing complexity, ensuring that the platform remains accessible, reliable, and relevant across diverse markets.
Conclusion: The operator behind the numbers
Serigne Dioum’s career is best understood through the systems he has built and the scale he has achieved.
From his early work in telecom engineering to his current role leading a US$500 billion fintech platform, his impact has been defined by execution rather than visibility.
The progression from US$221 billion in transaction value in 2022 to over US$500 billion in 2025, alongside growth to 69.5 million users and 23.3 billion transactions, reflects more than expansion. It signals the emergence of a financial system operating at continental scale.
In shaping MTN Fintech, Dioum has helped redefine how financial services are delivered, accessed, and experienced across Africa. His legacy is not just in the numbers, but in the infrastructure those numbers represent—an ecosystem that continues to power the continent’s digital economic future.
