java developer in payments

The business operates in the iGaming payments space and builds secure, scalable systems that support its international operations.

• Design and develop scalable payment services and APIs using Java and Spring Boot;
• Apply SOLID principles, modern architecture, and design patterns to build clean, maintainable solutions;
• Design and optimise data solutions across PostgreSQL, MySQL, Hibernate/JPA, and Redis;
• Build event-driven, asynchronous processing using Kafka and RabbitMQ;
• Design secure REST APIs using JWT, OAuth 2.0/2.1, authentication and authorisation, and API security best practices;
• Apply cryptographic and OWASP principles to ensure secure data handling;
• Develop robust unit, functional, and integration tests using JUnit and Mockito;
• Own build and release processes across Maven/Gradle, CI/CD, and containerised deployments;
• Investigate complex production issues and lead cross-service root-cause analysis;
• Drive refactoring, performance, and reliability improvements, and lead code reviews;
• Collaborate with Leads, Architects, Product, and business stakeholders, and mentor junior developers.

• 4–8 Years of professional Java development experience, ideally including Java 18–25;
• Strong experience with Spring/Spring Boot, REST APIs, and Hibernate/JPA;
• Solid understanding of distributed systems, databases, messaging, and caching, including Kafka/RabbitMQ, PostgreSQL/MySQL, and Redis;
• Strong grasp of API security, OAuth 2.0/2.1, JWT, and OWASP practices;
• Experience with Maven/Gradle, CI/CD, Docker, and cloud deployment;
• Strong problem-solving and production troubleshooting skills;
• Bachelor's degree in computer science or equivalent experience;
• Nice to have: Payments/FinTech experience.

• No conditions specified