OpenSearch / Elasticsearch Engineer

Job Title: OpenSearch / Elasticsearch EngineerLanguage: Japanese JLPTN3 and English BilingualStart Date: Immediate (Long-term)Location: Japan (Fully Remote)Interviews: 2Remote Work Frequency: Fully RemoteCompensation: Skill-Based as per experienceNotes: English Level (Business Level or above), Japanese Level (N3 or above)Background:We are seeking an experienced OpenSearch engineer to design, implement, and manage a high-performance distributed search and analytics platform. This role is critical to ensuring our application search, log analytics, and observability pipelines remain secure, scalable, and highly available to support our growing user base and data volumes. You will make significant contributions to improving the architecture and operational efficiency of our mission-critical data systems.Job Description:Design, implement, and maintain large-scale OpenSearch/Elasticsearch clusters for a variety of use cases (e.g., application search, logging, observability).Develop, optimize, and tune complex search queries, indexing strategies, and data models to ensure fast and accurate results.Develop custom OpenSearch plugins and integrations as needed to extend platform functionality.Partner with application development teams to drive OpenSearch integration into new and existing applications.Perform cluster health management, capacity planning, and resource allocation to ensure high availability, performance, and scalability.Implement and manage data pipelines using tools such as Logstash, Fluentd, or custom solutions to ensure efficient data ingestion.Define and enforce security policies, including fine-grained access control, encryption, and network segmentation.Automate deployment, configuration, and monitoring using Infrastructure-as-Code (IaC) tools such as Terraform and CloudFormation.Participate in on-call activities to diagnose and resolve production incidents related to the search platform.Perform regular cluster performance testing and optimization to proactively identify and resolve performance bottlenecks and enhance search capabilities using AI.Drive platform innovation by staying up-to-date on the OpenSearch/Elasticsearch ecosystem, new features, and best practices.Required Skills:Experience in designing, deploying, and maintaining OpenSearch and/or Elasticsearch clusters.