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Member of Technical Staff (Machine Learning Research Engineer)

Berlin, Deutschland💼 Full-time🗓 2026-04-05 → 2026-07-28

Core

Architect and build core components of the search platform and model stack, designing, training, and optimizing large-scale deep learning models for retrieval and ranking.

Role type

Senior IC machine-learning research engineer (search & retrieval)

Builds

Scalable search platform components, retrieval and ranking models, RAG pipelines for grounding and answer generation

Domain

Search technology, large-scale deep learning, representation learning

Deliverable

production ML models

Required skills

Large-scale search and retrieval systems, PyTorch (distributed training, performance optimization), representation learning (contrastive learning, embedding space alignment), multilingual and multimodal modeling, publication record in top AI/ML conferences

Preferred skills

Experience with boosting algorithms and LLMs, hardware acceleration expertise

Technologies

PyTorch, PyTorch Distributed, DeepSpeed, FSDP

Responsibilities

Design and train large-scale deep learning models for retrieval and ranking; conduct advanced research in representation learning; deploy models in a scalable and performant way; build and optimize RAG pipelines; collaborate with Data, AI, Infrastructure, and Product teams

Seniority

Senior, hands-on IC

Rewrite
## About the role 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 ## Requirements 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 ## Nice to Have ## Benefits
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