Lead AI Scientist, Brand Intelligence & Search

SE Ranking Limited; Polska; On-site; PLN 350,000 - 550,000; Full time

Job summary

SE Ranking, an all-in-one SEO and digital marketing platform, is seeking a Lead Applied Scientist to reverse-engineer how AI search and generative platforms describe brands and to build a measurement layer proving AI visibility's value to businesses.

You'll run experimental pipelines, design sampling across topics and regions, and mentor a small ML team while translating insights into product features and industry-first research.

Qualifications

• 5-6+ years in Data Science or Applied Science with shipped decisions.
• Expertise in ranking and information retrieval (NDCG, precision@K).
• Strong GenAI/LLM experience using ML APIs and open-weight models.
• Rigorous evaluation: leakage detection, time-based validation, business metrics.
• Ability to lead a small team and set technical direction.

Responsibilities

• Design and run experiments to test hypotheses.
• Define features to improve AI visibility for brands.
• Develop sampling methods for AI responses across topics/regions.
• Establish evaluation framework for LLM outputs.
• Mentor ML Engineers and contribute to hiring.
• Turn findings into product features and research.

Skills

Data science

Ranking & IR

GenAI/LLM

Model evaluation

Technical leadership

English proficiency

Tools

ClickHouse

LightGBM

CatBoost

faiss

LLM APIs

Job description

SE Ranking, an all-in-one SEO and digital marketing platform, is seeking a Lead Applied Scientist to reverse-engineer how AI search and generative platforms describe brands and to build a measurement layer proving AI visibility's value to businesses.

You'll run experimental pipelines, design sampling across topics and regions, and mentor a small ML team while translating insights into product features and industry-first research.