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# Software Engineer

- **Company:** Nexthink
- **Location:** Spain
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Artificial Intelligence, Software as a Service, Code Review, Elasticsearch, Performance Tuning, Search Technologies, Large Language Models, Technical Debt, Generative AI, Indexer, Backend, Microservices
- **Published:** July 21, 2026
- **Apply:** https://www.jobleads.com/es/job/ec0ef1bb562c1c990ee0ecc5786d559d5

## About the Role

* Professional-level spoken and written English required.
 * Experience in backend development using Java within a SaaS environment.
 * Proven experience or strong interest in search technologies such as OpenSearch or Elasticsearch.
 * Understanding of indexing, relevance, ranking, and performance tuning for search systems.
 * Must be able to work from the office in Madrid (Hybrid model).
 * Familiarity with microservices frameworks like Micronaut is highly valued.

Nice to have

 * Experience with vector databases, embeddings, and hybrid or semantic search.
 * Exposure to Retrieval-Augmented Generation (RAG) and LLM-based integrations.

## Description

Search Software Engineer (Java/AI): Building and delivering resilient, scalable distributed services that power search capabilities and AI-driven use cases with an accent on semantic and vector-based search technologies. Focus on designing systems to process billions of events, optimizing search relevance, and integrating LLM-based architectures into the product platform., * Implement, maintain, and scale data importing, exporting, and search capabilities.

 * Evolve the search platform, focusing on relevance, semantic search, and vector-based use cases.
 * Collaborate with product and engineering teams to deliver high-quality, scalable services.
 * Advocate for improvements in security, performance, and search efficiency across the platform.
 * Identify and resolve technical debt while maintaining high code quality through code reviews.
 * Support L3 requests to ensure platform reliability and availability.


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