Senior Software Engineer - Search Algorithms - Elasticsearch

Engg; España; On-site; PHP 4,855,000 - 7,681,000; Full time

Job summary

Elastic seeks a Senior Software Engineer to join the Elasticsearch - Search Relevance team. This globally distributed group focuses on fast, relevant search and improving Lucene-based capabilities. You will shape technical direction, design new features, and resolve complex bugs.

You will write idiomatic Java, work with vector databases, and collaborate asynchronously with teams across continents. This role emphasizes autonomy, code reviews, and delivering high-quality software.

Qualifications

• Experience with search or vector databases, using HNSW, IVF, or similar algorithms.
• Strong Java knowledge and familiarity with core data structures and concurrency.
• Ability to work autonomously and guide projects from start to finish.
• Experience collaborating across distributed teams and communicating APIs.
• Bonus: prior contributions to open source or collaboration over the internet.

Responsibilities

• Lead Elasticsearch initiatives to deliver fast, relevant search and build new features.
• Triage issues, implement algorithms, and improve code clarity.
• Collaborate with globally distributed engineers and stakeholders.
• Drive architectural decisions and mentor teammates.

Skills

Java

Search relevance

Vector databases

Tools

Elasticsearch

Solr

PostgreSQL

MongoDB

Cassandra

Job description

What is The Role

We're looking for a Senior Software Engineer to join the Elasticsearch - Search Relevance team. 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 technical leader is responsible for contributing to the technical direction and vision for our search capabilities, including design and implementation of new search features, enhancements to 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.

What You Will Be Doing

Lead initiatives within Elasticsearch to produce an industry-leading search engine 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 you'll need to invent a new algorithm or data structure. Or find one and implement it. Sometimes you'll 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 Elasticsearch search relevance. You'll identify and drive improvements 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!

What You Bring

Professional experience with search or vector databases, and you used HNSW, IVF, or other relevant algorithms and libraries on search platforms at scale. You have solid 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. You're comfortable developing collaboratively. Giving and receiving feedback on code and approaches and APIs is hard! Bonus points if you've collaborated over the internet because that's harder. Double bonus points for asynchronous collaboration over the internet. That's even harder, but we do it anyway because it's the best way we know how to build software. You've 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 a proven track record of using AI to accelerate development, debug complex systems, and optimize code, while still owning the final outcomes. You possess the ability to collaborate across functions and teams and seamlessly transition between different projects, codebases, or teams based on business priorities. You work autonomously and can drive decisions and results in a distributed team by leveraging asynchronous, direct, and transparent communication.

Bonus Points

You've built things with Elasticsearch before. You've 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.

Compensation for this role

Compensation for this role is in the form of base salary. This role does not have a variable compensation component. At Elastic, our compensation philosophy aims to provide fair, competitive and transparent remuneration. Salary ranges are established based on a combination of external market benchmarks, internal pay equity considerations, and the responsibilities and complexity associated with each role. This approach helps ensure consistency across comparable roles while remaining competitive within the relevant labour markets. The typical starting salary range for this role is: €67.000 - €106.000 EUR

Additional Information - We Take Care of Our People

As a distributed company, diversity drives our identity. Whether you’re looking to launch a new career or grow an existing one, Elastic is the type of company where you can balance great work with great life. Your age is only a number. It doesn’t matter if you’re just out of college or your children are; we need you for what you can do. We strive to have parity of benefits across regions and while regulations differ from place to place, we believe taking care of our people is the right thing to do. Competitive pay based on the work you do here and not your previous salary Health coverage for you and your