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← Perplexity AI

Internship - Machine Learning Research Engineer

Perplexity AI · Berlin

CHECKED 5H AGO

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At a glance

Highlights

  • Push search quality forward via models, data, and tooling innovation.
  • Build and optimize RAG pipelines for grounding and answer generation.
  • Research representation learning for multilingual search and retrieval.

Ideal candidate

A curious ML researcher obsessed with search quality and representation learning who loves turning research ideas into real retrieval experiences.

Requirements

  • Understanding of search and retrieval systems, including quality evaluation principles and metrics.
  • Strong proficiency with PyTorch, including experience in distributed training techniques and performance optimization for large models.
  • Interested in representation learning, including contrastive learning, dense & sparse vector representations, representation fusion, cross-lingual representation alignment, training data optimization and robust evaluation.
  • Publication record in AI/ML conferences or workshops (e.g., NeurIPS, ICML, ICLR, ACL, EMNLP, SIGIR).
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Lab profile

About Perplexity AI

Builds AI search answers and agentic Computer to turn knowledge into action.

What they build

  • Perplexity AI answer engine
  • Perplexity Computer agentic assistant
  • Comet AI browser and desktop apps

Known for

  • Agentic AI and agent capabilities
  • Applied AI product engineering
  • Cross-platform apps across web, mobile and desktop
  • Multimodal AI and integrations

Key facts

  • Founded in 2022
  • Headquartered in San Francisco, California
  • Serves millions of users daily
More about Perplexity AI →
Apply on the lab’s site ↗