Seun Osunkeye’s interest in banking traces back to his undergraduate thesis, where he examined how microfinance institutions support the survival and growth of small businesses through access to capital.
It was research at the time, but the question stayed with him through a career that moved through finance roles at HotelOga and NightsBridge, co-founding Carnegie Venture Partners, and eventually into Nomba, first as Senior Finance Associate, then Financial Controller.
Working closely with Nomba’s merchant base deepened the conviction. The pattern was consistent: viable, even thriving, businesses locked out of the formal financial system because the products available to them were never designed with how they actually operate in mind. When Nomba acquired a microfinance bank licence and rebranded it as Nombank, the company tapped Osunkeye to lead it.
Today, Nombank sits as the regulated banking infrastructure behind Nomba’s merchant network, the entity authorised to mobilise deposits and extend credit using transaction data from a business that has scaled fast.
Daily transaction volume on the platform has grown from NGN 7 B in May 2025 to roughly NGN 250 B in May 2026, a jump that says as much about merchant trust as it does about growth; more businesses are comfortable leaving their money on the platform than ever before.
In this Q&A, Osunkeye discusses his path to the role, what differentiates Nombank from Nigeria’s other fintech-led microfinance banks, and where he believes the country’s lending gap still runs deepest.
You reportedly wrote your undergraduate thesis on the role of microfinance banks in financing SMEs. You now run one. Walk me through the career between those two points: key roles, turning points, and what drew you closer to the banking side of fintech.
My interest in this space goes back to my undergraduate thesis, where I examined how microfinance banks support SMEs and how access to capital determines whether a small business survives or grows. It was just research at the time, but it stayed with me.
After graduation, I moved through a few finance roles: HotelOga, then NightsBridge, where I built financial models and set up payment controls for a hospitality business expanding into Nigeria. I also co-founded Carnegie Venture Partners, where we worked with early-stage startups across fintech, edtech, and proptech and supported them through their fundraising journeys. That gave me a different lens, seeing how investors size up a business, and how much of that judgement comes down to the quality of the numbers underneath.
By the time I joined Nomba, first as Senior Finance Associate and later as Financial Controller, I had spent years looking at this problem from multiple angles. Working closely with merchants deepened it further. You see it constantly: SMEs and MSMEs struggling to access financial products that fit how they actually operate, not how a bank theorist imagines they operate. Businesses that are viable, even thriving, but locked out of the formal financial system because the products were never designed with them in mind.
That is exactly what Nombank exists to fix. So when the conversation about leading it came up, it did not feel like a pivot. It felt like everything before it, the thesis, the accounting work, the investor side, Nomba, had been pointing here. The thread was always the same question: how does capital actually reach the businesses that need it?
What does your background as an ICAN-certified accountant and former Financial Controller at Nomba bring to running Nombank that a more traditional banking executive might not?
Most banking executives come up through credit or relationship management. That shapes how they see a business. My training is different. As an accountant, I was taught to look at risk, controls, and numbers first, before strategy, before narrative, before anything else.
As Financial Controller at Nomba, I wasn’t looking at numbers from a distance. I was inside the business: treasury, fundraising, planning, reporting. I knew exactly what it cost to serve a merchant, where the money was tight, and where the business was genuinely strong. That operational intimacy, understanding the real unit economics rather than the polished version, gives you a very different instinct for how to build a financial institution.
A traditional banking executive understands balance sheets. What they often don’t have is a feel for how a fast-moving, fintech-native business runs day to day: the decisions made at speed, the places where discipline can slip if nobody is watching, the difference between growth that is sustainable and growth that just looks good on a deck. I’ve lived all of that.
So I’m not running Nombank to chase deposit numbers for a slide. I want to build a regulated institution that is structurally sound and built to last. That’s how I was trained to think about any business I’m responsible for, and it’s how I’m thinking about this one.
Nomba acquired a bank and rebranded it as Nombank. What was the original thesis behind that decision, and has it evolved since?
The original thesis centred on infrastructure. For Nomba to grow into a full commercial financial ecosystem, we needed direct control over our own banking rails. Relying on external partners is a reasonable early-stage strategy, but it introduces friction and limits how much you can innovate. Securing a microfinance licence let us hold deposits and deploy savings products within our own regulated framework.
Since then, our thinking has shifted. We no longer see Nombank purely as a utility sitting underneath Nomba. We see it as a distinct, high-value product in its own right, with a specific customer segment and a value proposition that goes beyond simply supporting the broader ecosystem.
Most people who use Nomba don’t think too much about Nombank. What is the relationship between the two, and why does the distinction matter?
The distinction is fundamental, even if it’s mostly invisible to the end user. Nomba is the distribution and technology layer: the POS hardware, the merchant software, the transactional rails. Nombank is the regulated banking infrastructure underneath it, the CBN-licensed entity authorised to mobilise deposits and extend credit. When merchants use our savings features, those funds sit with Nombank. When they draw credit, it comes from Nombank.
That distinction matters for transparency and institutional trust. Operating as a regulated bank comes with obligations, capital adequacy ratios, deposit insurance, that go beyond what a standard payments processor has to meet. As we scale our deposit base and our lending book, it’s important that our stakeholders understand the structural integrity and regulatory oversight behind their money.
What is Nombank’s moat? What makes it structurally different from other MFBs in Nigeria right now?
Our advantage is data. Nomba processes roughly NGN 250 B in daily transaction volume across a large network of Nigerian businesses. That volume gives us a granular view into how those businesses actually operate: liquidity patterns, seasonal swings, operational trajectories that are invisible to conventional banks and credit bureaus.
That depth of information shapes how Nombank underwrites credit and structures capital in ways legacy microfinance institutions simply cannot replicate. A licence is a commodity. The institutional trust and the years of transaction data we’ve built up serving merchants are not.
What does Nombank offer to startups and businesses that a legacy MFB can’t or won’t?
Speed and context. Traditional microfinance institutions typically ask for multi-year audited statements, physical collateral, and rigid documentation. None of that fits how our merchant base actually operates: high-velocity, often informal, but capital-efficient.
Because we already have the transaction data, we can skip most of that documentation burden and assess credit in near real time. That lets us build facilities that mirror a business’s actual working capital cycle, rather than the abstract models that traditional banking theory tends to produce.
What are the most interesting use cases or customer stories you’ve seen so far, and what surprised you about how people are actually using Nombank?
The most interesting thing happening at Nombank right now isn’t just how merchants use us directly. It’s how businesses are embedding us into their own products to serve their customers.
The future of banking isn’t a super-app that does everything for everyone. It’s banking that disappears into the products people already use. Commerce and banking are converging, and businesses that understand their customers best, logistics platforms, trade networks, sector-specific fintechs, increasingly want to offer financial services as a natural extension of what they already do. Nombank is powering that.
Take one of our oil and gas technology partners operating in the midstream space. They connect suppliers and fuel stations across a complex supply chain. Through Nombank, they’ve embedded virtual account collections directly into their platform, so fuel stations can settle transactions without leaving the ecosystem they already work in. Because we can see the transaction behaviour flowing through that network, we can extend credit during operational downtimes, exactly when those businesses need liquidity and exactly when a traditional lender would walk away.
That model is repeatable across sectors: a food delivery platform offering its riders savings accounts and credit, a remittance company launching savings products for its customers, a logistics network that needs working capital embedded into its dispatch flow. Nombank can power all of it, the accounts, the compliance infrastructure, the credit layer, compliantly and at scale.
What surprised me is how quickly partners grasped what was possible once we showed them the model. Businesses have always wanted to serve their customers more completely. They just didn’t have a credible, regulated partner to build with. That’s the gap Nombank is filling.
Nigerian fintechs have been moving toward MFB licences, Paystack, Moniepoint, OPay. What’s driving this, and how do you see Nombank positioned within that wave?
Every significant Nigerian fintech eventually hits the same ceiling: you can move money, but you can’t hold it. An MFB licence removes that ceiling, and that’s what’s driving the wave. But I’d push back on the idea that these moves are equivalent, because the context behind each one matters.
Nombank isn’t a reaction to what anyone else is doing. We’ve been operating as the banking infrastructure behind Nomba for three to four years. While others are now acquiring licences and figuring out what to build, we’ve already been building quietly, with a live customer base stress-testing the product the whole time. The merchants using Nombank today weren’t acquired after we got a licence. They were already there.
That sequencing is the real differentiator. We didn’t get regulatory authorisation and then go looking for a market. We built the market first, understood what it needed, and the bank was the answer to a question our customers were already asking. That shows up in the depth of our data, the maturity of our credit thinking, and the trust we’ve already established with the businesses we serve.
What’s your honest read on the state of fintech-native banking in Nigeria right now? Where is the gap still wide?
The landscape is genuinely compelling, but it’s still early. The foundational infrastructure, regulatory licensing, API connectivity, switching networks, has improved dramatically. The SME credit gap is where the real challenge remains.
A lot of microfinance institutions, including the fintech-led ones, still operate mainly as deposit-mobilisation vehicles. The harder, more important work is building credit instruments that actually perform at scale for underserved businesses. That takes granular data, real risk discipline, and sustained commitment, and not everyone in the market has built that combination yet.
What does leading the banking arm of a company on a unicorn trajectory actually feel like from the inside?
It feels like building institutional infrastructure at full speed. The pace is relentless. Decisions that would normally take a quarter in a legacy bank get made in days. But that speed is anchored by serious regulatory discipline. A licensed bank isn’t a place to run startup experiments. We’re custodians of public capital, and that shapes our risk posture and our strategy.
The ambition of the wider group and the discipline of banking aren’t in tension. They reinforce each other. My job is to make sure Nombank has the structural strength to support where Nomba is going.
