.We're Celonis, the global leader in Process Mining technology and one of the world's fastest-growing SaaS firms. We believe there is a massive opportunity to unlock productivity by placing data and intelligence at the core of business processes - and for that, we need you to join us.The Role:As a global hyper-growth leader in process mining technology, our goal at Celonis is to establish our Intelligent Business Cloud as a standard SaaS solution in any company. Celonis is looking for a Senior Backend Engineer to build new features, design and implement robust public APIs and continuously increase our software's reliability. Our Java services are built on Java 21 and Spring (Boot), and expertise in microservices is highly desirable.Your Will:* Take full ownership of features delivery life-cycle from technical design and implementation to production rollout and maintenance.* Continuously improve the reliability and stability of our products.* Work with state-of-the-art technologies, developing breakthrough solutions always aiming to bring further value to our users and increase the Customer reach.* Propose, define, implement and release new software functionalities.* Constantly improve our development processes aiming for automation and efficiency.* Collaborate and work closely with the Product Management and UX teams to better understand end-user requirements.* Embrace a continuous learning and continuous improvement culture.* Mentor less experienced team members.* Help to retain and attract Talent within the organizationYour Qualifications: Are:* 8+ years of experience in building JAVA web applications professionally.* Write clear, understandable and testable code with a continuous focus on maintainability, performance, security and stability.* Have working experience with Java, Maven, Spring Frameworks, and REST APIs.* Having a can-do attitude able to solve complex problems with limited supervision.* Someone that enjoys sharing knowledge, working, and collaborating with other teams across the organization.* Full professional proficiency in English.Bonus Points:* Experience with Spring Boot, Kubernetes, and latest Java features.* Strong focus on quality, with experience in unit testing, integration testing and TDD in a Spring Boot environment.* Strong knowledge of API design principles, Open API specification, REST API architecture and other API architectures.* Understanding of API security principles (such as OAuth 2, JWTs, ...).* Experience with distributed systems leveraging a microservice-based architecture.* Knowledge of message-driven architectures (RabbitMQ, Kafka...).* Knowledge of Continuous Integration and Continuous Deployment (CI/CD) pipelines, ideally with experience using tools like GitHub Actions.* Experience with Datadog or other monitoring tools, with a focus on system reliability and performance tracking.* Experience with PostgreSQL or other relational databases.* Have a high-level understanding of Process Mining