We are seeking a skilled and motivated Senior Java Developer to join our team. You will be part of a highly agile environment, working with TDD, Pair Programming, and the XP process to deliver robust backend solutions. **Responsibilities** * Design, develop, and maintain backend services using Java (8/11/17\) with a focus on performance, scalability, and reliability * Build and enhance microservices based on Spring Boot, utilizing Spring Integration, Spring Cloud, and Spring Data * Implement and optimize concurrent and multithreaded processing using Java core concurrency features * Develop and manage data access layers and complex queries with PostgreSQL, ensuring data integrity and high performance * Contribute to data pipelines, supporting data ingestion, transformation, and integration with downstream systems * Work with Google Cloud Platform services, including Google Cloud Storage (GCS) and BigQuery (BQ), for cloud\-native data processing and storage * Configure and maintain CI/CD pipelines using Jenkins for reliable builds, automated testing, and deployments * Collaborate with cross\-functional teams such as product, data, and DevOps to deliver solutions that meet business needs * Participate in code reviews, technical discussions, and initiatives for continuous improvement **Requirements** * Minimum 3 years of experience in backend development with Java * Strong hands\-on expertise with Java 8/11/17, including Java Core and concurrency (threads, executors, synchronization) * Solid experience with Spring Boot and related frameworks such as Spring Integration, Spring Cloud, and Spring Data * Proficient in SQL with practical experience in PostgreSQL, including schema design, query optimization, and transaction management * Experience working with Google Cloud Platform, especially Google Cloud Storage and BigQuery * Skilled in configuring and maintaining CI/CD pipelines using Jenkins * Good understanding of RESTful APIs and microservices architecture * Ability to thrive in an Agile environment and communicate effectively with both technical and non\-technical team members * Excellent English communication skills at B2 level or higher **Nice to have** * Basic understanding of data pipeline concepts, including ETL/ELT, data flow, and the differences between batch and streaming processing