Research Engineer, Index Intelligence

The role

A research engineer will own the signals and decisions regarding which web pages to index and follow. This role involves building massive-scale ML systems to improve search efficiency and quality.

What you will do

• Own the signals behind indexing decisions
• Decide which pages are worth indexing and which links are worth following
• Determine which pages are duplicates or have gone stale
• Make parsing work on pages where it currently does not
• Teach a model to judge page quality
• Work on credibility and misinformation as a modelling problem
• Decide whether two documents are semantically the same or genuinely different

Required qualifications

• Hands-on ML experience with classifiers, rankers and calibration
• Strong data instincts at web scale

Nice to have

• Comfortable owning a problem with no ground truth
• Think in end-to-end impact
• Like working across teams
• Care about the problem of finding high quality knowledge

About the company

Exa is an applied AI lab building a search engine. They build massive-scale infra to crawl the web, train embedding models, and design vector databases.