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Senior/Principal Engineer - OpenSearch at Jobgether. This position is posted by Jobgether on behalf of DTEX Systems. We are currently looking for a Senior/Principal Engineer – OpenSearch in California (USA).. This role offers the opportunity to lead the development and optimization of large-scale OpenSearch clusters, directly impacting the performance and scalability of high-value applications. You will work on cutting-edge Insider Risk Management (IRM) and Data Loss Prevention (DLP) products, contributing both to internal solutions and the broader open-source community. The position combines hands-on engineering with strategic collaboration, enabling you to solve complex technical challenges while mentoring colleagues. You will engage with global teams and clients, designing robust, high-throughput systems and ensuring operational excellence in cloud-hosted environments. This role is ideal for engineers passionate about distributed systems, search technologies, and making a tangible impact on enterprise cybersecurity.. . Accountabilities:. ·         Lead the design, implementation, and optimization of large-scale OpenSearch clusters handling terabytes of data.. ·         Develop and enhance IRM and DLP products through feature development, bug fixes, and performance tuning.. ·         Serve as a technical consultant and mentor to internal teams, clients, and external practitioners.. ·         Actively contribute to the OpenSearch community and participate in public forums to advance best practices.. ·         Collaborate with cross-functional teams, including open-source contributors, to drive innovation.. ·         Apply expertise to cloud-hosted OpenSearch deployments, ensuring stability, scalability, and operational excellence.. ·         Rapidly iterate on solutions while maintaining high-quality standards and efficient workflows.. ·         Minimum 10 years of software engineering experience.. ·         Bachelor’s degree in Computer Science or a related field.. ·         Deep expertise in OpenSearch internals, managing multi-node clusters and terabytes of data.. ·         Proficiency in data management: ingestion pipelines, field mappings, cluster integrity, and search/aggregation tuning.. ·         Experience migrating large-scale Elasticsearch 6.x deployments to OpenSearch 2.x or higher.. ·         Strong knowledge of OpenSearch management: index lifecycle management, sharding strategies, JVM configuration, and shard/replica tuning.. ·         Proficiency in Python and a solid understanding of JVM ecosystems.. ·         Strong grasp of algorithms, data structures, and software design principles.. ·         Experience building distributed, high-throughput, and concurrent applications.. ·         Hands-on experience with major cloud platforms, preferably AWS.. ·         Ability to debug complex issues and engage with upstream open-source communities.. ·         Excellent collaboration, communication, and problem-solving skills.. Company Location: United States.