Posted 2 Sep 2026 (64 days ago) · Job 2949 · Read from the employer's Ashby board, last checked 5 Nov 2026, 08:25 UTC

Internship - Machine Learning Research Engineer

Perplexity · Berlin, Germany

Apply on Perplexity’s siteAsk about this jobApply opens the employer’s own application. Nothing is sent from here.

What the posting says

Each fact carries its state:Statedfound in the postingConflictstwo statements disagree, both quotedNot mentionedthe posting does not say

Employment typeStated
Full time
Work arrangementStated
Hybrid

Not mentioned in this posting

“Not mentioned” means the posting does not say. It is not a no. You could ask the recruiter.

PayNot mentioned
The posting does not say
ShiftNot mentioned
The posting does not say
ExperienceNot mentioned
The posting does not say
EducationNot mentioned
The posting does not say
Visa sponsorshipNot mentioned
The posting does not say

Requirements, each with its sentence from the posting

These are the employer’s words. The index does not judge whether you meet them.

  • No requirement has been itemised for this posting yet. The employer’s words are in the full posting below.
Read the full posting as the employer wrote it

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).

The posting text is reproduced as the employer wrote it; the index adds nothing to it.