Principal Software Engineer II - Vector Search

Company: Elastic
Location: Elkins Park
Posted on: November 1, 2025

Job Description:

Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. The Elastic Search AI Platform, used by more than 50% of the Fortune 500, brings together the precision of search and the intelligence of AI to enable everyone to accelerate the results that matter. By taking advantage of all structured and unstructured data — securing and protecting private information more effectively — Elastic’s complete, cloud-based solutions for search, security, and observability help organizations deliver on the promise of AI Were looking for a Principal Software Engineer II to join the Elasticsearch team to focus on vector search. This globally distributed team of expert engineers focuses on delivering a robust and feature-rich search experience, including contributing to improving the search experience in Lucene. This is a senior principal software engineering role that focuses on enhancing the vector similarity search functionality within Elasticsearch, defining and implementing a future-facing roadmap for vector search within Elasticsearch, covering the design and implementation of new vector search features, enhancements to existing vector search functionality, and resolving bugs. Our company is distributed by intention. We hire the best engineers we can find wherever they are, whoever they are. We collaborate across continents every day over email, GitHub, Zoom, and Slack. At our best, we write fast, scalable, and intuitive software. We believe that the best way to do that is to empower individual engineers, code review every change, decide big things by consensus, and strive for incremental improvements Responsibilities • Lead cross organizational initiatives to produce an industry-leading vector database offering, supplying unparalleled speed and relevance in search. • Contribute to Elasticsearch full time, building new search features and fixing intriguing bugs, all while making the code easier to understand. Sometimes youll need to invent a new algorithm or data structure. Or find one and implement it. Sometimes youll need to get close to the operating system and hardware. • Work with a globally distributed team of experienced engineers focused on the vector search capabilities of Elasticsearch. • Be an expert on how Elasticsearch implements vector similarity in support of search relevance and everyone will turn to you when they have a question about this area. Youll improve this area based on your questions and your instincts. • Work with community members from all over the world on issues and pull requests, sometimes triaging them and handing them off to other experts and sometimes handling them yourself. • Write idiomatic modern Java Elasticsearch is 99.8% Java Qualifications • You have implemented novel techniques in vector similarity on a search platform with a large user base or progressed the field of academic research in vector similarity information retrieval. • Youve made broad industry-wide contributions to search relevance or related topics in information retrieval. • Professional experience with vector similarity and vector databases, and you used HNSW, IVF, or other relevant algorithms and libraries on search platforms at scale. • You have strong skills in core Java and are conversant in the standard library of data structures and concurrency constructs, as well as other features like lambdas. • You work with a high level of autonomy, and are able to take on projects and guide them from beginning to end. This covers both technical design and working with other engineers to develop needed components. • Youre comfortable developing collaboratively. Giving and receiving feedback on code and approaches and APIs is hard! Bonus points if youve collaborated over the internet because thats harder. Double bonus points for asynchronous collaboration over the internet. Thats even harder, but we do it anyway because its the best way we know how to build software. • Youve used several data storage technologies like Elasticsearch, Solr, PostgreSQL, MongoDB, or Cassandra and have some idea how they work and why they work that way. • You have excellent verbal and written communication skills. Like we said, collaborating on the internet is hard. We try to be respectful, empathetic, and trusting in all of our interactions. And wed expect that from you too Bonus Points • Youve built things with Elasticsearch before. • Youve worked with open source projects and are familiar with different styles of source control workflow and continuous integration. • Experience with data storage technology. • You have experience designing, leading and owning cross-functional initiatives

Keywords: Elastic, Philadelphia , Principal Software Engineer II - Vector Search, IT / Software / Systems , Elkins Park, Pennsylvania