**Senior Java Developer** Hybrid or remote modality We are looking for a **Senior Java Developer** with experience in transactional and financial environments, capable of analyzing, optimizing, and maintaining high-performance critical services. **Main requirements:** * +5 years of experience in **Java development** (Spring Boot, JPA/Hibernate). * Knowledge of **ISO8583 messaging** and **encryption algorithms** **(MANDATORY).** * Experience in analyzing transaction logs and stack traces. * Proficiency in **PostgreSQL or Oracle** (query and process optimization). * Solid experience in **Linux and scripting (Bash)** for automation and monitoring. * Experience with **AWS (EC2, RDS, S3, CloudWatch)**. **Desirable:** * Experience in **Fintech or payment processing** environments. * Knowledge of **microservices** and **cloud security**. Job type: Full-time Salary: $35,000.00 \- $40,000.00 per month Workplace: Remote job