**Introduction** Databases and event streams are complementary infrastructure in modern software architecture. You will enhance Pulsar to support event streaming applications that use DataStax's Astra cloud service which provides the Cassandra database and the Pulsar streaming engine. You will be highly involved in the design, implementation, and operation of solutions to solve problems for the world’s leading enterprises as we scale up and deliver an amazing developer experience. **Your role and responsibilities** * Author, debug, and improve code in the core of Apache Pulsar * Contribute to open-source and proprietary projects that interface with Pulsar * Aid production support teams debugging and root causing user-facing issues * Work in a fast-moving environment to rapidly prototype, iterate and evolve solutions for real-world developer need * Perform regular code reviews among peers **Required technical and professional expertise** * Systems level proficiency in Java or another popular language. * Experience working on large scale distributed systems * Experience with multi-threaded programming and concurrency primitives. * Knowledge of distributed data stores (NoSQL systems) to achieve massive scalability and availability of the data made available by your data pipelines. * Familiarity with bug tracking tools, version control tools, build automation tools and test automation tools. * Experience in SDLC having contributed at each step: Plan, Track, Code, Build, Test, Deploy and Monitor. **Preferred technical and professional experience** * Experience with Apache Pulsar or Kafka is a plus. * Experience with Apache Cassandra is a plus. IBM is committed to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, caste, genetics, pregnancy, disability, neurodivergence, age, veteran status, or other characteristics. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.