Java/Kotlin Developer SSR/SR
Description:
We are looking for a highly skilled Senior Backend Developer with strong experience in Java and hands-on knowledge of Kotlin for backend development. The ideal candidate will be responsible for designing, developing, and maintaining scalable backend services and RESTful APIs within a microservices-based architecture.
This role requires collaboration with cross-functional teams including Product, Frontend, DevOps, and QA, as well as active participation in system design and architectural decisions.
Key Responsibilities
Design, develop, and maintain backend services and RESTful APIs using Java and Kotlin
Build and enhance microservices-based architectures
Work with frameworks such as Spring / Spring Boot (Java or Kotlin)
Integrate backend services with SQL and/or NoSQL databases
Ensure code quality through unit testing, code reviews, and best practices
Collaborate with Product, Frontend, DevOps, and QA teams
Troubleshoot, debug, and optimize backend applications
Participate in system design discussions and architectural decisions
Required Qualifications
5+ years of backend development experience using Java
Hands-on experience with Kotlin for backend development
Strong experience building REST APIs and backend services
Experience with Spring Boot and Hibernate/JPA
Solid understanding of microservices architecture
Experience working with relational databases (PostgreSQL, MySQL, Oracle, etc.)
Familiarity with Git, CI/CD pipelines, and build tools (Maven/Gradle)
Good understanding of object-oriented design and design patterns
Nice to Have (To Be Validated During Interview)
Experience with cloud platforms such as AWS, Azure, or GCP
Exposure to Docker and Kubernetes
Experience with messaging systems such as Kafka or RabbitMQ
Knowledge of security protocols such as OAuth2 and JWT
Experience migrating services from Java to Kotlin (experience in at least one is acceptable)
Location: Martínez, Buenos Aires, Argentina
Work Modality: Hybrid (On-site presence required 1–2 times per week)