Software Engineer, Knowledge Systems

About the Company

Exa is an applied AI lab building a search engine unlike the world has ever seen. We build massive-scale infra to crawl the entire web, train state-of-the-art embedding models to process it, and design super high performant vector databases to retrieve over it. We now power search for Cursor, Cognition, HubSpot, and over 400,000 developers.

Responsibilities

• Build systems that understand what is true about the world
• Work on extracting, connecting, retrieving, and reasoning over knowledge from the web and beyond
• Enable AI agents to answer questions with unprecedented precision and completeness
• Build systems that can answer factual questions about every person in the world
• Design new query languages for searching, traversing, and reasoning over billions of facts

Requirements

• Experience building and maintaining complex distributed backend systems
• Ability to build data pipelines that process petabytes of documents, metadata, and unstructured data
• Proficiency in optimizing systems for correctness, reliability, and scale
• Deep commitment to data quality and finding high-quality information

Preferred Qualifications

• Experience building systems involving graph traversal
• Experience with entity resolution
• Experience with data quality or truth discovery

Benefits

• Premium healthcare benefits (medical, dental, vision)
• Fertility benefits
• 16 weeks of fully paid parental leave
• Monthly wellness stipend