Senior Search Engineer - OpenSearch

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Search Engineer - OpenSearch based in Brazil. This role focuses on building advanced search capabilities that help users quickly find materials, customers, orders, and documents across massive enterprise datasets. You will play a key role in designing and optimizing search infrastructure built around OpenSearch and modern relevance techniques. The position combines product engineering with hands-on delivery, allowing you to shape platform capabilities while solving customer-specific search challenges. You will work across index and schema design, ingestion pipelines, query optimization, relevance engineering, and search APIs. A major focus will be applying strong technical judgment to improve search quality, performance, scalability, and reliability. You will collaborate with product, implementation, solution engineering, IT, and customer teams in a technically diverse environment. The role is ideal for a senior search specialist who enjoys solving complex search problems and turning measurable improvements into production-ready capabilities.