Java Developer – Backend

Role Overview

• Design and implement efficient event-driven systems.
• Integrate and maintain platforms to handle high throughputs and complex event processing.
• Contribute to architectural decisions to enhance system resilience and scalability.
• Develop and maintain robust backend systems for IoT devices.
• Implement communication protocols such as MQTT to ensure seamless interaction between devices and servers.
• Ensure the secure and efficient exchange of data between IoT devices and the backend system.
• Design, implement, and manage database solutions utilizing MongoDB.
• Optimize database structures for performance and reliability.
• Manage data migration, backup, and restoration activities.
• Implement and maintain Keycloak for secure user authentication and authorization.
• Develop strategies for identity and access management.
• Enhance security measures to protect sensitive information and prevent unauthorized access.
• Implement and manage Kafka to facilitate the exchange of real-time data and events between applications.
• Optimize message brokers for reliability and low-latency.
• Develop monitoring tools to oversee message broker health and activity.
• Develop scalable and maintainable APIs for integration with front-end applications, especially those utilizing React.
• Collaborate with front-end developers to align backend functionality with frontend requirements.
• Maintain API documentation to facilitate seamless integration.
• Conduct code reviews to ensure adherence to coding standards and to maintain code quality.
• Implement testing frameworks to validate system functionality and robustness.
• Collaborate with other developers and teams to resolve bugs and optimize code performance.
• Stay abreast of the latest industry trends and best practices in backend and IoT development.

Requirements

• Bachelor’s/Master’s degree in Computer Science, Engineering, or a related field.
• 2 years of proven experience in backend development, with a focus on IoT.
• Strong knowledge of event-driven development and MongoDB.
• Experience with Keycloak, MQTT, and Kafka is a plus.
• Familiarity with Docker, Kubernetes, and other containerization technologies is a plus.
• Good analytical, problem-solving, and critical-thinking skills.
• Able to work as a team and focus on objectives with high standards and quality.
• English (able to communicate within an international team).

Tech Stack

• Docker
• IoT
• Kafka
• Kubernetes
• MongoDB
• React

Benefits

• A competitive salary and other perks.
• Employee Stock Options (ESOP) to financially participate in the success of the company.
• Flexible work environment (e.g. office hours) with a focus on results.
• Meaningful work in an award-winning startup with the opportunity of creating real impact.
• Close collaboration with the leadership team and low hierarchies.
• International work environment in a great team of 10+ nationalities.
• Very steep learning curve due to our open and performance-based culture.
• Great offices in central locations