---
title: "Internship - Machine Learning Research Engineer"
company: "Perplexity"
company_url: "https://www.remjobs.works/companies/perplexity"
url: "https://www.remjobs.works/job/perplexity-internship-machine-learning-research-engineer-9b44efa1-3737-4a2d-8120-ea75028c2ced"
apply_url: "https://jobs.ashbyhq.com/perplexity/b9e1ff15-d52a-46d5-abf0-26460f2a116c"
workplace: hybrid
location: "Berlin"
employment_type: full-time
seniority: internship
role: ai-machine-learning
region: europe
skills: ["pytorch"]
date_posted: 2026-09-02T10:35:02.552Z
first_seen_by_remjobs: 2026-09-02T18:34:51.134Z
---

# Internship - Machine Learning Research Engineer

**Perplexity** — Berlin

Apply: https://jobs.ashbyhq.com/perplexity/b9e1ff15-d52a-46d5-abf0-26460f2a116c

## About Perplexity

Perplexity LLC is an Executive Coaching firm for SME

## 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).

---

Source: Perplexity's own career page, read by RemJobs. Canonical HTML version: https://www.remjobs.works/job/perplexity-internship-machine-learning-research-engineer-9b44efa1-3737-4a2d-8120-ea75028c2ced