merchant acquiring

Adyen

Pieter van der Does and Arnout Schuijff had already built and sold one payments company when they sat down in 2006 to start again. The result was Adyen — the name literally means "start over" in Surinamese — and the premise was simple: instead of stitching together the same fragmented payment infrastructure everyone else was using, they would build the whole thing themselves from scratch. That decision, made in an Amsterdam office nearly two decades ago, is still the reason Adyen is different. Most payment companies are assemblers — they buy a gateway here, a processor there, bolt them together and hope for the best. Adyen owns its own technology stack end to end, which means a merchant integrating once gets access to card processing, local payment methods, point-of-sale terminals, and real-time settlement data through a single platform. No middle layers, no reconciliation headaches, no finger-pointing between vendors when something breaks. The client list tells you everything about where Adyen sits in the market. McDonald's, Spotify, Microsoft, LVMH, H&M — these are companies with serious payment volumes and zero appetite for systems that don't work. Adyen became the default choice for enterprises that had outgrown the limitations of traditional payment stacks and needed something that could handle global scale without buckling. Since going public on Euronext Amsterdam in 2018, Adyen has grown into one of Europe's most valuable technology companies, with around 4,300 employees across 23 countries and net revenue of just under €2 billion in 2024. It remains headquartered in Amsterdam and consistently profitable — a combination that's rarer in fintech than it should be. For businesses that treat payments as infrastructure rather than an afterthought, Adyen is the benchmark everything else gets measured against.

Founded 2006

Mollie

Adriaan Mol built Mollie's first backend while living with his parents in the Netherlands in 2004. No investors, no office, no team — just a founder and an idea that small businesses deserved a payment integration that didn't require a team of lawyers and a six-month setup process. He bootstrapped it for over fifteen years before taking outside funding in 2019. By then, Mollie had already grown into one of the most important payment platforms in European e-commerce, entirely on the back of a product that developers actually liked using. The proposition is straightforward: one API, one dashboard, and access to the payment methods that actually matter across Europe. That means iDEAL in the Netherlands, Bancontact in Belgium, Klarna and SEPA Direct Debit everywhere, alongside cards, Apple Pay, and a growing list of local methods that would otherwise require separate integrations and separate acquirer relationships. Mollie handles the compliance, the fraud monitoring, and the settlement complexity. Merchants get a clean interface and a single invoice. For the 250,000 businesses using Mollie today — ranging from Gymshark and Wild to local bakeries and market stalls, as CEO Koen Köppen regularly points out — the appeal is less about feature lists and more about what they don't have to think about. European payments are fragmented by design. Every country has its preferred methods, its own regulatory quirks, its own consumer habits. Mollie's job is to make that invisible. The numbers from 2024 reflect a company that has found its model. Revenue reached €214 million, up 28% year on year, with gross profit growing 30% to €115 million and the company returning to positive EBITDA for the first time since 2018. Mollie raised a total of $940 million in funding and was valued at $6.5 billion following its 2021 Series C led by Blackstone. The most significant recent development is the acquisition of GoCardless in December 2025 — bringing the UK-based direct debit specialist into the Mollie group and substantially expanding its recurring payments and bank transfer capabilities across Europe. Combined, the two companies cover a considerable share of European e-commerce payment infrastructure. Mollie is still headquartered in Amsterdam, with around 900 employees across offices in Ghent, London, Lisbon, Munich, Milan, Paris, and beyond.

Founded 2004

SumUp

SumUp is Europe's answer to the merchant services problem: a scrappy fintech that turned point-of-sale payments into something actually accessible. While legacy payment processors still treat small businesses like second-class customers, SumUp built hardware and software that work together seamlessly, letting anyone from a street vendor to a café owner accept cards in minutes, not months. The company started by selling cheap card readers—simple, elegant devices that plugged into phones. But that was just the wedge. Today SumUp offers a stack: card readers, invoicing, basic accounting, and increasingly, working capital tools. It's the financial operating system for the SME who doesn't want to negotiate with a relationship manager. What sets SumUp apart in Europe is its refusal to stay in the payments lane. Most competitors eventually build one feature and call it a day. SumUp keeps layering—acquiring merchant acquirer licenses, launching its own acquiring infrastructure in key markets, adding payment links and e-commerce solutions. The company operates across Western Europe and beyond, working with hundreds of thousands of merchants who are too small for traditional banking but too important to ignore. SumUp represents the practical, unglamorous evolution of fintech: it's not trying to reinvent banking or blockchain. It's solving the cash flow problem for people who actually run businesses. That's a bigger opportunity than it sounds.

Founded 2012

Dotpay

The Polish payment processor landscape consolidated significantly through acquisitions and mergers during the 2010s, and Dotpay was one of the brands that defined that consolidation. Founded in 2001 as one of Poland's earliest online payment processors, Dotpay built a substantial Polish merchant base through the early growth of Polish e-commerce before being acquired by PayLane in 2017 to form Polskie ePłatności, which itself became part of the Nets Group following further consolidation. The Dotpay brand and its operational infrastructure have continued to operate within the broader payment platform structure, serving Polish merchants who established their payment infrastructure during Dotpay's independent years. The company's history reflects the broader trajectory of Polish payment infrastructure — early specialist operators building genuine technical capability and merchant relationships, followed by consolidation into larger groups with the scale to compete effectively in an increasingly competitive payment processing market. In the Polish payments landscape, Dotpay represents both the early-mover generation of online payment processors and the consolidation pattern that has reshaped the European payment industry over the past decade. The merchant relationships and operational infrastructure built during the Dotpay era continue to operate under different ownership structures, but the underlying operational depth in the Polish market remains.

Founded 2001

Payplug

Payplug is a French payment infrastructure company that helps SMEs and mid-market businesses accept payments online and in-store. Founded in 2012, it's built a reputation for making payment acceptance friction-free—something most European merchants still struggle with despite living in 2024. The platform handles card payments, invoice payments, and subscription billing through a single dashboard. Payplug removes the complexity of payment processing: no technical setup required, no need to manage multiple payment providers, no hidden fees. It's the kind of tool that works best when you forget it's there. In a crowded European payments market dominated by legacy players and American gatekeepers, Payplug stands out by focusing obsessively on the SME segment rather than chasing enterprise deals. Its growth has been steady but unglamorous—which is exactly how French fintech should work. The company raised €60 million in 2021 and reached profitability, a rarity in the payments space where many competitors are still burning cash to fight for market share. Payplug represents the maturing of European payment infrastructure: local, profitable, and built for merchants who don't have time for venture-scale complexity. It's an essential player in the infrastructure layer that powers European e-commerce.

Founded 2012

Paynetics

Paynetics operates at the intersection of payment infrastructure and embedded finance, building the plumbing that lets fintechs and traditional companies accept, process, and manage payments without wrestling with legacy banking systems. The Bulgarian-founded company has positioned itself as a critical middleware layer—connecting merchants, fintech platforms, and financial institutions through a unified API. Rather than forcing clients into proprietary ecosystems, Paynetics emphasizes flexibility and interoperability, allowing partners to plug into multiple acquiring networks, payment gateways, and settlement rails from a single integration point. This approach has resonated particularly with regional players across Europe seeking alternatives to Western-dominated payment processors. The company's strength lies not in flashy consumer-facing products but in unglamorous, essential infrastructure: payment orchestration that routes transactions intelligently, card issuing APIs that power embedded finance plays, and acquiring services that work across markets where local nuance matters. For fintech founders building in Central and Eastern Europe or scaling across fragmented European payment corridors, Paynetics removes the friction of navigating dozens of local processors and compliance regimes. Its expansion into treasury and FX services suggests ambitions beyond pure payments—positioning itself as a platform for companies managing cross-border complexity. In an industry dominated by American giants and large European incumbents, Paynetics represents a rare example of a challenger emerging from the region's underestimated fintech ecosystem, proving that critical infrastructure doesn't always require Silicon Valley pedigree.

Founded 2013

Tpay

Polish online payment processing has multiple credible operators competing for similar market segments, and the differentiators between them often come down to operational reliability, merchant service quality, and integration depth with the specific platforms that Polish e-commerce builders use. Tpay was founded in 2010 to compete in that market, building a payment gateway and processing platform serving Polish online merchants across the full range of payment methods their customers expect — instant bank transfers, BLIK, cards, deferred payment options. The company has built a substantial merchant base across Polish e-commerce, with particular strength in segments where its operational reliability and customer service have built durable merchant relationships. Tpay operates in a market where the established players date back to the late 1990s and early 2000s, requiring newer entrants to compete on dimensions where their operational architecture and product approach can offer genuine advantages over the legacy infrastructure that defines older platforms. The maturation of Polish e-commerce through the 2010s and 2020s has continued to expand the addressable market faster than the established operators have absorbed it, leaving room for platforms like Tpay to build sustainable positions even as the overall sector consolidates.

Founded 2010

Przelewy24

Polish online merchants have specific payment requirements driven by the dominance of bank-based payment methods over cards in Polish e-commerce, and Przelewy24 has built two decades of operational depth around serving that market. Founded in 2004, the platform provides payment processing for online merchants across Poland with particular strength in instant bank transfer methods, the BLIK integration, and the broader range of payment options that Polish consumers actually use rather than the card-focused payment methods that international platforms prioritise. The company is part of the Nets Group following acquisition, giving it the resources of one of Northern Europe's largest payment technology groups while maintaining the local operational depth that defines its position in the Polish market. Przelewy24 serves a substantial share of Polish e-commerce merchants — from independent online retailers to major Polish enterprise brands — providing the integrated payment processing that handles the diversity of Polish payment methods across a single merchant integration. In the Polish payments landscape, the question of which platform handles the largest share of online payment volume has been contested between several domestic specialists, with Przelewy24 consistently ranking among the leading operators by volume and merchant count.

Founded 2004

Pay.nl

Pay.nl is a Dutch payment processor built for the complexity of modern commerce. Rather than forcing merchants into a one-size-fits-all payment flow, it offers a modular approach where acquirers, payment methods, and risk tools snap together like building blocks. This flexibility appeals to mid-market retailers and platform operators who've outgrown off-the-shelf solutions but don't have the resources to build from scratch. The company positions itself as the pragmatic middle ground in European payments. While fintechs chase consumer flashiness and traditional PSPs move at legacy speed, Pay.nl focuses on the unglamorous reality of merchant operations: payment routing, multi-currency settlement, real-time reconciliation, and developer experience. Its API-first architecture means integrations take weeks instead of quarters. Pay.nl operates across the full payment stack—card acquiring, alternative payment methods, tokenization, subscription billing—but treats them as components rather than marketing bullets. This modular thinking extends to risk management and compliance, which the company bundles without overhead. Within Europe's crowded payments landscape, Pay.nl competes less on consumer reach and more on merchant control. It's the choice for companies that care about payment economics and operational efficiency rather than brand building. Its role in the broader ecosystem is to mature the middle market, proving that European merchants don't need either a tech giant's infrastructure or a startup's rough edges.

Founded 2007

Embat

Embat is a European fintech platform built for the era when payments moved beyond the checkout. Founded on the principle that modern businesses need payment infrastructure that speaks their language—not the other way around—Embat offers a composable payments stack designed for developers and merchants who refuse to settle for legacy constraints. The platform combines payment orchestration, processing, and settlement into a single, modular system. Rather than forcing clients into rigid vendor relationships, Embat lets companies plug in their preferred processors, acquirers, and gateway partners while maintaining unified visibility and control. This flexibility appeals to enterprises and merchants tired of vendor lock-in and technical debt. What sets Embat apart in the crowded European payments landscape is its developer-first design philosophy. The company recognizes that payments sit at the intersection of multiple systems—loyalty, inventory, subscriptions, marketplaces—and builds its API architecture accordingly. This contrasts sharply with older payment solutions that treat payments as an isolated transaction layer rather than a core business platform. Embat occupies a distinct position between monolithic payment processors and lightweight API providers. It's built for companies that have outgrown commodity payment gateways but don't want to stitch together five different vendors to get what they need. In the increasingly competitive European fintech market, Embat represents the modern infrastructure play: solving real operational complexity for merchants and enterprises through intelligent, flexible payment technology.

Founded 2021

Mokka

Mokka is a Romanian fintech platform built for the modern seller. Rather than forcing merchants into the rigid infrastructure of traditional payment processors, Mokka gives them a unified dashboard to manage payments, invoicing, and business basics from one place. The platform handles card payments, digital wallets, and local payment methods—all wired into a clean, merchant-friendly interface that feels less like enterprise software and more like something designed for actual humans. For Romanian SMEs and freelancers tired of juggling multiple logins and opaque fee structures, Mokka offers transparency and control that legacy banking and payment gateways simply don't provide. It's part merchant acquirer, part business backbone—a practical response to how payment infrastructure in Central & Eastern Europe still lags behind Western standards. Mokka sits at the intersection of embedded finance and merchant enablement, serving businesses that want payment functionality without the complexity.

Founded 2020

Nexi

Nexi is Italy's largest payment services operator, controlling the infrastructure that moves money across the country's retail and corporate sectors. Founded in 2013 through a merger of two major Italian payment processors, it manages card transactions, merchant acquiring, and digital payment rails for banks, retailers, and businesses across Europe. The company operates across the full payments stack—from traditional POS terminals and card networks to modern API-based solutions and instant payment systems. Unlike most fintech startups, Nexi doesn't target consumers directly. Instead, it powers the payment backbone for Italian and European financial institutions and retailers, processing tens of billions in transactions annually. Its business model sits at the intersection of traditional payment infrastructure and modern open banking, positioning it as a critical node in Europe's shift toward real-time payments and embedded finance. Nexi's role is unglamorous but essential: it's the plumbing that makes modern commerce work, handling everything from contactless cards to mobile wallets to cross-border transfers. In the broader European fintech landscape, it represents the "boring" but profitable core—the infrastructure layer that fintechs themselves depend on to function.

Founded 2013