Java Engineer

We are currently seeking an Java Engineer to join our team on a full-time B2B remote basis, working with one of the largest payment processing companies in the market, a leading fintech player powering high-volume, mission-critical platforms. As an Java Engineer, you will: Design and develop secure, robust payment gateway integrations with leading providers Build innovative payment solutions for specialized industries (petrol stations, retail, and beyond) Develop scalable RESTful APIs capable of handling high-volume transaction processing Architect and maintain microservices using Java, Spring Boot, and modern cloud technologies Implement event-driven architectures with RabbitMQ for real-time payment processing Deploy and orchestrate services on Kubernetes for high reliability and scalability Utilize Protobuf for efficient inter-service communication Contribute to data pipelines and analytics infrastructure to support business insights Work closely with product and business teams to translate requirements into scalable solutions Participate in agile processes and contribute to continuous improvement Ensure code quality through testing (JUnit, Mockito) and DevOps best practices WHAT WE'RE LOOKING FOR Strong backend development experience with Java and Spring Boot Solid understanding of database design and RESTful API architecture Hands-on experience with Kubernetes and containerized environments Experience with messaging systems (RabbitMQ or similar) Proficiency with Protobuf for microservices communication Strong testing mindset with JUnit and Mockito Experience with analytics, reporting, or Data Lakes Familiarity with Agile development and DevOps practices Fluent English communication skills EU residency and B2B work eligibility Nice-to-Have: Experience with payment systems, gateways, or fintech platforms Exposure to PCI-DSS compliance and financial data security