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Member of Technical Staff (Machine Learning Engineer, Search)

PerplexityLondonHybridPosted 25 March 2025
Advert doesn't mention visasFull-time
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Perplexity AI Ltd holds a sponsor licence

RoutesGlobal Business Mobility: Senior or Specialist Worker, Skilled Worker
RatingWorker (A rating)
On the register since6 May 2026

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What the advert says about visas

Advert doesn't mention visas

The employer holds a licence, so sponsorship may still be possible. Ask before applying.

About the role

Perplexity is seeking an experienced Machine Learning 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 our search platform and model stack

  • Train and evaluate retrieval, ranking and classification models, including LLMs

  • Deploy models - from boosting 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

  • Self-driven, with a strong sense of ownership and execution

  • Minimum of 5 years of working on search or recsys-related projects

Listed by Perplexity on Ashby. Apply on the employer's site. Original listing.

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