I Gaming / Sportsbook / Online Casino | Senior Java Backend | Kafka or Rabbit MQ | Hybrid in Madrid.

Ideally with experience in payments, i Gaming/Gambling or Fin Tech (integrations and payments gateways) My client in the i Gaming industry (online Casino and Sportbooks) is looking for a Senior Java developer, to work hybird from Madrid (3 days in the office, 2 days remote).

Role Overview We are looking for a Senior Java developer to build and scale core platform services in a distributed, event-driven environment.

The role focuses on designing reliable, high-performance systems, including APIs, asynchronous workflows, and distributed transactions.

You will ensure system resilience, data integrity, and observability while contributing to testing, security, and CI/CD practices.

Collaboration with engineering, Dev Ops, and compliance teams is key to shaping architecture and maintaining high standards across performance, scalability, and reliability.

Skills & Experience 8+ years of experience with Java, 5+ of experience with Spring,



Springboot and Microservices 1+ years of experience within the payments, i Gaming or Fin Tech industry 1+ years of experience with platforms integrations and payments gateway.

2+ years of experience with Kafka or Rabbit MQ.

Key Responsibilities Develop and maintain core backend services (identity, transactions, data integrity) within an event-driven architecture.

Build reliable, asynchronous workflows and high-performance APIs with proper versioning and consistency guarantees.

Implement distributed transactions, concurrency controls, and resilience patterns to ensure system stability and correctness.

Manage database evolution, security (auth/authz), testing, and observability across services.

Contribute to internal tools, CI/CD, infrastructure, and leverage AI tools to enhance development efficiency.

#J-18808-Ljbffr

Required Skill Profession

It

📌 Senior Software Engineer (Madrid)
🏢 Pentasia
📍 Madrid