London: Search ML Engineer Intern - Build NextGen Retrieval

FDE Times; Greater London; Hybride; GBP 13 000 - 27 000; Plein temps

Résumé du poste

Perplexity is seeking a Search Machine Learning Engineer Intern to help build the next generation of advanced search technologies, focusing on retrieval and ranking. You will work with experienced engineers to improve search quality, experiment with new models, and ship features that impact how users search and discover information.

This in-person London internship runs 12–24 weeks, full-time, with hands-on learning, mentorship, and opportunities to contribute to production-scale ML systems.

Qualifications

• Strong foundation in ML and statistics with coursework or projects related to information retrieval, ranking, or recommender systems.
• Experience with Python and common ML frameworks (PyTorch, TensorFlow, JAX) through academic, open source, or personal projects.
• Familiarity with evaluating model quality using offline metrics and/or A/B testing is a plus, but not required.
• Previous experience (internships, research, or significant projects) working on search, recommendation, or NLP is a plus, but not required.
• Self-driven and curious, with ownership mindset and ability to work in a fast-paced environment.
• Experience with Rust will be a plus.

Responsabilités

• Contribute to experiments that improve search quality through better models, data usage, and evaluation tools, under the guidance of senior engineers.
• Design and implement components of the search platform and model stack, including retrieval, ranking, and classification models.
• Train evaluating models (including LLM-based approaches) for retrieval, ranking, and classification tasks.
• Support deployment and monitoring of search and ranking models in a scalable and performant way.
• Help build and iterate on RAG pipelines for grounding and answer generation.
• Collaborate with Data, AI, Infrastructure and Product teams to deliver improvements quickly and learn best practices in production ML.

Connaissances

Machine Learning

Statistics

IR/Ranking

Recommender Systems

Outils

Python

PyTorch

TensorFlow

JAX

Rust

Description du poste

Perplexity is seeking a Search Machine Learning Engineer Intern to help build the next generation of advanced search technologies, focusing on retrieval and ranking. You will work with experienced engineers to improve search quality, experiment with new models, and ship features that impact how users search and discover information.

This in-person London internship runs 12–24 weeks, full-time, with hands-on learning, mentorship, and opportunities to contribute to production-scale ML systems.