Member of Technical Staff (Machine Learning Research Engineer)

Promptcube3; Berlin; Vor Ort; EUR 110.000 - 150.000; Vollzeit

Zusammenfassung

Perplexity is seeking an experienced Member of Technical Staff (Machine Learning Research Engineer) to advance retrieval and ranking for next-generation search technologies in Berlin. The role emphasizes building and optimizing the model stack, scalable training with PyTorch, and deploying high-performance search components.

The candidate will lead research in representation learning, multilingual and multimodal modeling, and RAG grounding, collaborating with Data, AI, Infrastructure, and

Qualifikationen

• Strong background in search/retrieval systems evaluation and metrics.
• Experience with large-scale models and distributed training.
• Proven ability to publish in AI/ML venues.

Aufgaben

• Architect and build core components of the search platform and model stack.
• Design, train, and optimize large-scale deep learning models.
• Deploy models in production with scalable, performant pipelines.
• Collaborate with cross-functional teams to deliver high-quality search features.

Kenntnisse

PyTorch

Distributed training

Retrieval systems

Representation learning

Multilingual models

Research publications

Tools

DeepSpeed

FSDP

Jobbeschreibung

# Member of Technical Staff (Machine Learning Research Engineer)Perplexity1970-01-21BerlinOn-site / hybridFull Time## Role informationPerplexity is seeking an experienced Machine Learning Research Engineer to help build the next generation of advanced search technologies, with a focus on retrieval and ranking. Responsibilities Relentlessly push search quality forward — through models, data, tools, or any other leverage available Architect and build core components of the search platform and model stack Design, 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 advanced research in representation learning, including contrastive learning, multilingual, and multimodal modeling for search and retrieval Deploy models — from boosting algorithms to LLMs — in a scalable and performant way Build and optimize RAG pipelines for grounding and answer generation Collaborate with Data, AI, Infrastructure, and Product teams to ensure fast and high-quality delivery Qualifications Deep understanding of search and retrieval systems, including quality evaluation principles and metrics Proven track record with large-scale search or recommender systems Strong proficiency with PyTorch, including experience in distributed training techniques and performance optimization for large models Expertise in representation learning, including contrastive learning and embedding space alignment for multilingual and multimodal applications Strong publication record in AI/ML conferences or workshops (e.g., NeurIPS, ICML, ICLR, ACL, CVPR, SIGIR) Self-driven, with a strong sense of ownership and execution Minimum of 3 years (preferably 5+) working on search, recommender systems, or closely related research areas Find more English Speaking Jobs in Germany on Arbeitnow