Member of Technical Staff Machine Learning Engineer Ranking Quality Search
PerplexityVisit Perplexity website
Perplexity is an AI-powered answer engine that provides real-time, cited answers and research capabilities.
San Francisco, United States
Funding history
About Perplexity
Private AI company founded in 2022. Its products combine conversational search and research with cited web sources; it also offers developer-facing Search, Agent, Router, and Embeddings APIs.
Skills
About the Role
You will own ranking-quality problems from evaluation and bottleneck identification through implementation and safe release. You will train and evaluate retrieval, ranking, and classification models, including neural and LLM-based approaches. You will build ranking infrastructure for feature computation, low-latency inference, deployment, and monitoring while balancing quality, latency, reliability, cost, and complexity.
Requirements
- Search system
- Recommender system
- Evaluation
- Production ranking system
- Machine learning
- Software engineering
- Data
- Model serving
- Monitoring
- Neural ranking
- Low-latency ranking system
- 5 years of industry experience
Responsibilities
- Improve search quality through models, data, evaluation, and infrastructure
- Own ranking-quality problems from evaluation through safe release
- Train and evaluate retrieval, ranking, and classification models
- Build and operate ranking infrastructure
- Balance quality, latency, reliability, cost, and engineering complexity
- Own final quality outcomes across cross-functional collaboration
