Search Senior Machine Learning Engineer
Role Overview
As a Senior Machine Learning Engineer at Perplexity, you will architect and build core components of the search platform, focusing on retrieval and ranking systems. You'll train and evaluate models, including LLMs, and deploy them in scalable ways, while collaborating with cross-functional teams to drive search quality forward. This senior role involves ownership of RAG pipelines and impactful contributions to advanced search technologies.
Perks & Benefits
This is a fully remote position, offering flexibility in work location. You can expect a collaborative environment with Data, AI, Infrastructure, and Product teams, fostering career growth through high-impact projects. The role emphasizes a self-driven culture with ownership, likely supporting a healthy work-life balance typical in tech remote setups.
Full Job Description
Perplexity is seeking an experienced Senior Machine Learning Engineer to help build the next generation of advanced search technologies, with a focus on retrieval and ranking.
Responsibilities
Relentlessly push search quality forward—through models, data, tools, or any other leverage available
Architect and build core components of our search platform and model stack
Train and evaluate retrieval, ranking and classification models, including LLMs
Deploy models - from boosting to LLMs - in a scalable and performant way
Build and optimize RAG pipelines for grounding and answer generation
Collaborate with Data, AI, Infrastructure and Product teams to ensure fast and high quality delivery
Qualifications
Deep understanding of search and retrieval systems, including quality evaluation principles and metrics
Proven track record with large-scale search or recommender systems
Self-driven, with a strong sense of ownership and execution
Minimum of 5 years of working on search or recsys-related projects
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