Devfi Inc is a Digital Transformation company delivering innovative and affordable solutions by leveraging digital & AI technologies.

**Backend Java Developer with Kafka, Spring WebFlux, and GraphQL Expertise (3-5 years experience)**

We are looking for a talented Backend Java Developer who is proficient in working with Kafka, Spring WebFlux, and GraphQL. This role requires a balance of skills in these three key areas, enabling our team to build responsive, efficient, and scalable backend services.

• Develop and maintain backend services using Java with Spring Boot (2.7 or higher), incorporating robust security practices with Spring Security (5.x preferred). Understanding of Oauth and JWT is a plus.
• Design and implement APIs using GraphQL to optimize data retrieval and manipulation in a flexible, efficient manner.
• Understanding of reactive programming techniques and ability to utilize Spring WebFlux for building non-blocking, reactive applications and enhancing system responsiveness and resilience.
• Manage Kafka-based event-driven architectures, including event streaming, topic creation, configuration, and Spring Boot integration with Kafka.
• Hands-on experience creating custom Kafka producers and consumers using Java and Spring Boot for effective message processing and handling.
• Gain familiarity with Confluent Cloud to enhance our Kafka implementation (preferred).
• Strong understanding of implementing and maintaining data management solutions with MyBatis, JDBC, and SQL.
• Efficiently deploy applications on Tomcat, ensuring high availability and performance.
• Use Maven for dependency management and Docker for containerization of applications.
• Proficient in Docker and Kubernetes for container orchestration and application scaling.
• Adhere to test-driven development practices to ensure code quality and maintainability.
• Experience in developing CI pipelines using GitLab CI and managing deployments with Helm is preferred.

• 3-5 years of experience in backend development, specifically with Java, Kafka, Spring WebFlux, and GraphQL.
• Bachelor’s degree in Computer Science, Engineering, or a related field.
• Strong understanding of reactive programming concepts and their application in Spring WebFlux.
• Proven experience in designing and implementing GraphQL APIs.
• Excellent problem-solving skills and the ability to work independently or as part of a team.
• Strong communication and collaboration skills.

Contract.

raissa@devfi.com

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• [ ] Alocado
• [X] Remoto
• [ ] Presencial
• [ ] Híbrido

• [ ] Júnior
• [ ] Pleno
• [X] Sênior
• [ ] Especialista

• [X] Full time
• [ ] Part Time
• [ ] Projeto

• USD 40 - 45/hour