Job Summary: We are looking for a Backend Developer with experience in Java and Spring Boot/Spring to design and implement scalable services and work with modern architectures and high-quality code. Key Highlights: 1. Design and implement scalable and maintainable backend services 2. Work with hexagonal architecture, DDD, SOLID, and Clean Code 3. Collaborate on technical and system design decision-making Responsibilities Design and implement scalable and maintainable backend services. Work with hexagonal architecture, DDD principles, SOLID, and Clean Code. Participate in technical and system design decision-making. Design asynchronous workflows using events and message queues. Collaborate with other teams to ensure seamless integration of features. Conduct code reviews and contribute to development best practices. **Technologies we use (and expect you to know):** Java, Kotlin, Spring Boot/Spring NestJS, Next.js **Databases:** SQL DDD, SOLID, and Clean Code principles. Unit testing frameworks such as JUnit, Mockito, etc. Git, CI/CD, containers (Docker) **Nice-to-have experience:** **Mobile development:** Android (Kotlin), iOS (Swift) Modern frontend with Next.js We are seeking a Backend Developer with solid experience in JAVA and Spring Boot/Spring, ideally also experienced in Kotlin, to join the virtual wallet team of a leading company providing comprehensive solutions to cooperatives and agricultural producers. We value profiles with strong technical judgment, a focus on code quality, and experience with modern architectures. Requirements +3 years of backend Java development experience Solid knowledge of software design patterns and architecture. Experience writing and maintaining unit tests. **Conditions:** Employment type: Direct employment relationship with the company. Work mode: Flexible hybrid. Working hours: Monday to Friday, 9:00–17:30. Benefits Health insurance coverage for you and your family. English classes during working hours. Insurance discounts. Wellhub Wellness Program (Gympass). Telecommunications plan discounts for the employee and their family (Claro).