Internship - Machine Learning Research Engineer
Perplexity, Berlin
- Pay
- Not listed by the employer
- Work type
- Hybrid
- Level
- Intern
- Area
- Research, ML / AI engineering, Inference & ML systems
- Posted
- Sep 2, 2026
About the role
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).
Similar roles at other companies
Deep Learning Research Intern - Summer 2027 - Amsterdam
IMCAmsterdam, Netherlands +3
Pay not posted
Posted Jul 6, 2026
Pay not posted
Posted Jul 1, 2026
Research Intern, Inference (Summer 2027)
Together AISan Francisco
$58–$70 / hr
Posted Sep 18, 2026
Research Intern
Quadrillion LabsNew York City
$300K–$500K / yr
Posted Jun 28, 2026
Listed on Perplexity's Ashby job board; checked 17 h ago. First seen by us 19 h ago. Being listed doesn't mean the team is actively interviewing.