
We are a team of fraud hunters, cybersecurity experts, data scientists, and software engineers that since 2014 share the same dream: make technology a safer place. Every day, we work side by side with our customers to help them safely navigate digital opportunities, while growing their business. And we do it with passion, determination, and constant curiosity about the unexpected. Our purpose is to make people’s life easier and free from the threats hidden in the digital ecosystem. That’s why we designed a real-time technology that enables fraud management teams in financial institutions to detect and prevent financial fraud across all digital channels, while ensuring a safe and seamless experience for the end-users. Recognized as a market leader by industry analysts, today we protect over 60M+ users of top-tier retail and corporate banks against financial online fraud.

We are a team of fraud hunters, cybersecurity experts, data scientists, and software engineers that since 2014 share the same dream: make technology a safer place. Every day, we work side by side with our customers to help them safely navigate digital opportunities, while growing their business. And we do it with passion, determination, and constant curiosity about the unexpected. Our purpose is to make people’s life easier and free from the threats hidden in the digital ecosystem. That’s why we designed a real-time technology that enables fraud management teams in financial institutions to detect and prevent financial fraud across all digital channels, while ensuring a safe and seamless experience for the end-users. Recognized as a market leader by industry analysts, today we protect over 60M+ users of top-tier retail and corporate banks against financial online fraud.
Founded: 2014
Product: AI-powered Fraud Extended Detection & Response (FxDR) platform for digital banking
Funding: €10.0M Series A (Sep 2023) led by United Ventures
Scale (company claim): Protects 120M+ accounts and secures billions of digital sessions annually
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Digital banking and online financial fraud across web, mobile, and APIs.
2014
Computer and Network Security
€10.0M
Raised to support market expansion and further develop Cleafy's proactive fraud-prevention platform.
“Series A led by United Ventures (UV T-Growth); EIT Digital Accelerator is also listed as an investor on third-party records.”
At Cleafy, we build software that protects digital businesses and millions of users from fraud and cyber threats. We are looking for a Full Stack Software Engineer with strong technical foundations and a genuine curiosity for AI-powered solutions , ready to design and build scalable products end to end.
Build systems end to end: Work across the full stack—from user-facing experiences to backend services and cloud infrastructure. You'll contribute to architectural decisions, choose the right tools for each problem, and build systems that are secure, scalable and maintainable over time.
Simplify complex problems: Security and fraud prevention are inherently complex. Your role is to challenge unnecessary complexity, design clean architectures, write readable code, and continuously improve pipelines, processes and developer experience.
Power security products with AI: Collaborate with product teams to identify where AI and data-driven approaches can meaningfully improve detection, decision-making and user experience. You'll help take ideas from experimentation to production, ensuring solutions are robust, observable and scalable.
Own what you build: You'll have autonomy and responsibility across the full lifecycle of your work: from ideation and design to implementation, testing, deployment and evolution in production. You'll see your software protecting real customers at scale.
Requirements
What We're Looking For
Other Requirements
Benefits
Working at Cleafy means being part of a group of people who support, respect, and inspire one another, no matter what.
That's why we have been certified by Great Place to Work® (find our page on bit.ly/BestWorkplace-Cleafy).
C leafy is an Equal Opportunity Employer and Prohibits Discrimination and Harassment of Any kind. Our company is committed to the principle of equal employment opportunity for all employees and to providing employees with a work environment free of discrimination and harassment. All employment decisions at Cleafy are based on business needs, job requirements, and individual qualifications, without regard to race, color, religion or belief, age, family or parental status, or any other status protected by the laws or regulations in the locations where we operate.
Proficiency in web development languages and frameworks, both backend and frontend
Knowledge of testing and automation libraries
Understanding of agile development methodologies & tools (Scrum, Kanban, Jira)
Ability to work with version control systems (git) and related best practices (pull requests, git flow, etc.)
Experience designing RESTful APIs services
Experience with containers and CI/CD tools
Technologies you might work with:
Code: Python, Javascript/Typescript,
Framework: React, Next.js, Django
Infrastructure: Google Cloud Platform