Senior ML Engineer – Search & Ranking Systems

Company: Perplexity
Apply for the Senior ML Engineer – Search & Ranking Systems
Location: London
Job Description:

Perplexity is seeking an experienced Machine Learning Engineer to improve search quality across the middle and later stages of ranking. You will own ranking-quality problems end to end, from evaluation to deployment, tackling ambiguous challenges with a focus on production systems.

The role requires deep ML and software-engineering skills, a background in neural or low-latency ranking methods, and at least 5 years of industry experience in a data-driven environment.

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Posted: October 1st, 2026