Middle Java Developer

EveryMatrix is a leading B2B SaaS provider delivering iGaming software, content and services. We provide casino, sports betting, platform and payments, and affiliate management to 300 customers worldwide. But that's not all! We're not just about numbers, we're about people. With a team of over 1400 passionate individuals spread across twelve countries in Europe and Asia, we're all united by our love for innovation and teamwork. Join us on this exciting journey as we continue to redefine the iGaming landscape, one groundbreaking solution at a time. We are looking for a dedicated Middle Java Developer to join our team in London! About the job: This is a rare opportunity to shape how data-driven decision-making works at scale across an iGaming CRM platform — both from the inside and for the operators who rely on it. What You'll get to do: Develop, maintain, and enhance microservice applications using Java 21+ and Spring Boot. Design and implement scalable, resilient, and high-performance solutions. Work with relational and OLAP databases, writing efficient SQL queries in PostgreSQL and ClickHouse. Develop code to process complex data structures to / from Kafka. Ensure best practices in microservice architectures, including API design, scalability and security. Collaborate closely with other team members, including DevOps, Front End, Product and QA Participate in code reviews, technical discussions and continuous improvement initiatives. What we’re looking for: 3+ years of commercial experience in Java development. Strong knowledge of Java 21+ and Spring Boot. Good experience with developing on Linux and a familiarity with bash scripting. Experience with SQL databases and writing optimised queries. Experience with ClickHouse is a plus, but not required. Experience with Kafka (experience with Avro is a plus but not required). Experience with a wide range of enterprise Java and Spring components, including Spring Data JPA. Experience with containerisation technologies such as Docker and Kubernetes. Experience with stream processing frameworks such as Apache Flink is a plus but not required. Familiarity with SSO mechanisms including OpenID is a plus but not required. A basic understanding of core microservice components such as service discovery, API gateway and service monitoring. Previous exposure to the gaming / sports betting industry is a plus but not required. Solid understanding of microservice architectures and best practices. Experience with AI code assistance tools such as Gemini and Claude, and a desire to work with an AI-first mindset. Strong problem-solving skills and the ability to work in an agile environment. An ability to pay close attention to detail whilst also seeing the big picture. More than anything, we are looking for candidates who are good communicators, curious and inquisitive, and who love solving problems both individually and as part…