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Perplexity

Internship - Machine Learning Research Engineer

Perplexity02 Sep 2026
fulltimeremote
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Job Description

Internship Program Berlin

Internship program: 12 - 24 weeks, full-time, in-person in the Berlin office.

Responsibilities

  • Relentlessly push search quality forward — through models, data, tools, or any other leverage available.

  • Train, and optimize large-scale deep learning models using frameworks like PyTorch, leveraging distributed training (e.g., PyTorch Distributed, DeepSpeed, FSDP) and hardware acceleration, with a focus on retrieval and ranking models.

  • Conduct research in representation learning, including contrastive learning, multilingual, evaluation, and multimodal modeling for search and retrieval.

  • Build and optimize RAG pipelines for grounding and answer generation.

Qualifications

  • 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).

Required Skills

PyTorchRAGMultimodal

Frequently asked questions

Is the Internship - Machine Learning Research Engineer position at Perplexity remote?

Yes. The Internship - Machine Learning Research Engineer role at Perplexity is a remote position, open to candidates worldwide.

What type of employment is the Internship - Machine Learning Research Engineer role?

Perplexity is hiring for a full-time Internship - Machine Learning Research Engineer position.

What skills are needed for the Internship - Machine Learning Research Engineer job at Perplexity?

Key skills for this role include PyTorch, RAG, Multimodal.

How do I apply for the Internship - Machine Learning Research Engineer position at Perplexity?

You can apply for the Internship - Machine Learning Research Engineer role directly through Perplexity's official application link provided on this page.

Interested in this role?

Apply directly on the company's website.

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Perplexity

Perplexity

Website
Posted02 Sep 2026
Typefulltime
LevelInternship
LocationRemote
Apply NowView All Jobs at Perplexity

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