Senior Java / Kafka Developer

altersolutionsParis

On-site Full-time

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Experience Level

Senior

Qualifications

Required Technical SkillsLanguages: Java 11+ (Spring / Spring Boot), Kotlin is a plus. Messaging & Streaming: Expertise in Kafka (topics, consumers/producers, performance optimization, monitoring). Databases: Proficient in SQL (PostgreSQL, Oracle), NoSQL (MongoDB, Cassandra). CI/CD & Tools: Familiar with Git, Maven/Gradle, Jenkins, GitLab CI. Cloud & Containerization: Knowledge of Docker, Kubernetes, AWS or GCP is advantageous. Testing & Quality: Experience with JUnit, Mockito, SonarQube. Architecture: Familiarity with microservices, REST APIs, and event-driven architecture. Desired ProfileMaster's degree in Computer Science or equivalent. Proven experience (minimum 7 years) in Java backend development.

About the job

Main Responsibilities

Design, develop, and maintain backend applications using Java (Spring Boot).
Define, implement, and optimize event flows on Apache Kafka (topics, partitions, performance, security).
Participate in software architecture decisions and the industrialization of real-time solutions.
Ensure code quality through unit tests, continuous integration, and code reviews.
Contribute to the deployment and monitoring of applications (CI/CD, monitoring, support).
Collaborate closely with Product, Data, and Infrastructure teams.
Provide insightful suggestions for improving technical and methodological best practices.

About altersolutions

Altersolutions is a leading consulting firm specializing in technology solutions, established in 2011. Our mission is to support clients in navigating their digital transformation challenges. Our services encompass:Software DeliveryInfrastructure & Cloud ComputingAgile IT PerformanceBusiness PerformanceAs an international group operating in over ten countries with 5,700 employees, we prioritize the development and well-being of each team member. We strive to provide the best working conditions, including:Remote work options available for many projectsA flexible office environment to enhance communication and collaborationCommunities of experts to share and disseminate skills across the organizationSupport for personal and professional growth

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