Senior Security Engineer

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 EMI (FCA reference number 927920) and a Principal Member of Mastercard, we offer real-world financial solutions that include :
• Global 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.

We're looking for a skilled Senior Security Engineer to design and implement security solutions, improve detection and response capabilities, and support secure infrastructure at scale. You'll work closely with engineering teams to embed security into development and operations, manage vulnerabilities, and contribute to cloud and application security initiatives.

Responsibilities

Requirements

Nice to have

Relevant certifications : CISSP, AWS Security Specialty. OSCP / E.

Please note that Colibrix One is a brand representing a group of legal entities. The employment contract will be signed with the relevant company within the group (Mellifera Kartiera Ltd, Colibrix Ltd, or Mellifera Operations Ltd) depending on the nature of the position and jurisdiction

This position is offered within the Colibrix one. Employment will be under the appropriate legal entity based on the role and location.