Data First Jobs

Haystack

ML Engineer

Full Time · In Office · Seattle, Washington (USA)

$183,800–$248,700 · Posted Jun 27, 2026

We're hiring on behalf of a Haystack partner!

The Role

  • Lead the Insights & Prompt Generation vertical within the Conversational Discovery Experiences (CAX) team.
  • Own prompt generation, quality, personalization, and coverage for Sponsored Prompts.
  • Lead a team of applied scientists and engineers to build and scale the prompt generation pipeline.
  • Develop new prompt themes, quality frameworks, and drive coverage expansion.
  • Define metrics to measure prompt effectiveness and drive experimentation to improve CTR, helpfulness, and advertiser outcomes.

What You'll Need

  • 4+ years of applied research experience.
  • 3+ years of experience managing scientists or machine learning engineers.
  • 3+ years of experience building machine learning models for business application.
  • PhD or Master's degree with 6+ years of applied research experience.
  • Strong technical depth in NLP, LLMs, and information retrieval.
  • Experience programming in Java, C++, Python or related languages.

What's On Offer

  • Opportunity to re-imagine advertising with generative AI technologies.
  • Work at the forefront of re-inventing advertising experiences.
  • Lead a passionate group of innovators shaping the future of advertising.

Apply via Haystack today!

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ML Engineer

Haystack

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