Skip to content
Updated How AI-exposed are the skills employers are hiring for? See the data →

From the employer's careers site First seen 6 Nov 2026

Senior/Staff Evaluation Data Analyst (Agentic Search)

Nebius London senior full-time

The employer hasn't listed a salary.

Apply on Nebius

Description

We are looking for an experienced Data Analyst who has built evaluation systems for complex technology products and is excited to take end-to-end ownership of quality in search built for AI agents.

In this position, you will:

  • Own the quality measurement and improvement cycle end-to-end: identify user needs, define success, build evaluations, diagnose failures, and work with engineers and product managers to improve outcomes.
  • Design, build, and evolve evaluation systems, including datasets, benchmarks, metrics, and automated pipelines that support development and launch decisions.
  • Evaluate response quality across multiple dimensions, including relevance, completeness, freshness, factual accuracy, and usefulness to downstream agents.
  • Investigate quality regressions and metric anomalies, uncover root causes, and identify the improvements with the greatest potential impact.
  • Help prioritize the product and engineering roadmap, making quality trade-offs explicit and assessing whether changes deliver meaningful improvements for users.

We expect you to have:

  • Substantial hands-on experience designing and building evaluation or quality measurement systems for complex technology products, such as search, AI agents, voice technologies, autonomous driving, recommendation systems, advertising, or other similar complex systems.
  • A track record of owning ambiguous problems from initial framing through implementation, diagnosis, and measurable product improvement.
  • Strong Python skills and an engineering mindset: you can turn analytical ideas into reliable, maintainable pipelines and tools.
  • A solid foundation in mathematical statistics and practical experience with experimental design, sampling, uncertainty, and measurement bias.
  • Strong analytical judgment: you understand what a metric captures, what it misses, and whether an observed improvement matters to users.
  • The ability to reason across user needs, product behavior, and technical systems, and to translate that understanding into actionable evaluations.
  • Strong communication and collaboration skills, with the ability to influence technical and product decisions.
  • The independence to make progress in a fast-moving environment where requirements, methods, and definitions of success are still evolving.

Benefits & Perks:

  • Competitive compensation
  • Career growth and learning opportunities
  • Flexibility and ownership
  • Collaborative and innovative culture
  • Opportunity to work on impactful AI projects
  • International environment and talented teams

Skills

Required

  • Python
  • mathematical statistics
  • experimental design
  • sampling
  • uncertainty
  • measurement bias

Ready to apply?

You apply with the employer directly. Their original posting is here: https://job-boards.greenhouse.io/nebius/jobs/5027589101

Apply on Nebius