Join COLIBRIX ONE - Innovating the Future of Payments
At COLIBRIX ONE*, we're building advanced, AI-powered payment technologies that support Payment Service Providers (PSPs), Electronic Money Institutions (EMIs), and neobanks across the EU and the UK. As a fully licensed Electronic Money Institution (FCA Reference No. 927920) and holder of a Financial Institution Licence issued by the MFSA, as well as a principal member of both VISA and Mastercard, we provide comprehensive, real-world financial solutions that include:
- General card processing
- Digital wallet infrastructure
- Cross-border merchant accounts
- Alternative payment methods (APMs)
- Corporate accounts for legal entities

We're a fast-growing team with a passion for innovation, security, and scalability. Our culture values curiosity, collaboration, and impact - and we're looking for talented professionals who are ready to shape the future of fintech. At COLIBRIX ONE, your work directly powers the digital economy. If you're eager to solve meaningful challenges and build with purpose, we'd love to hear from you.




About the Role
As a Senior Account Manager at Colibrix One, you'll take full ownership of our most complex and strategically important merchant relationships. Beyond managing a larger portfolio, you'll act as a go‑to expert within the Account Management team: mentoring colleagues, sharing best practices, and helping raise the standard of client service across the team. This is a senior individual contributor role, ideal for an experienced fintech professional who wants to deepen their impact without moving into formal people management.
Key Responsibilities:
- Own a portfolio of high-value, high-volume, and complex merchants, acting as their trusted advisor and single point of contact across finance, compliance, and operations
- Lead onboarding of complex or higher-risk merchants, including in-depth document review and close collaboration with Compliance on enhanced due diligence
- Handle escalatio

📌 Senior Key Account Manager (Barcelona)
🏢 Colibrix One
📍 Barcelona