Rol IA · Oferta abierta

Senior Applied Scientist — Search & ranking

Índice de mercado

Enfoque: AI Agents

Paris · 10-50 employees · Startup · GenAI: Yes

Tiempo completo
Senior
Marketplace relevance
Hybrid
London, United Kingdom · Hybrid
£100k–£130k + equity

Este anuncio está pensado para talento nativo en IA: habilidades y herramientas claras para saber si encajas antes de aplicar — y para reducir descartes por desajuste.

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Empleo: Tiempo completo
Modalidad: Hybrid
Ubicación: London, United Kingdom · Hybrid
Compensación: £100k–£130k + equity
Nivel de experiencia: Senior
Equipo: Marketplace relevance
Beneficios

Sobre el rol

Qué busca el equipo y cómo encaja el puesto.

H Company is hiring a Senior Senior Applied Scientist — Search & ranking on the Marketplace relevance team (Hybrid · London, United Kingdom). This is a hands-on role in search & recommendations—not a generic “AI enthusiast” post.

You will own ranking, retrieval, and online experimentation end to end: problem framing, offline evaluation, safe rollout, and iteration from production signals. Success is measured with clear metrics (quality, latency, cost, or business KPIs)—not slide decks alone.

London hybrid team blends classical learning-to-rank with embeddings and GenAI-assisted summaries. We optimise for buyer trust, seller fairness, and measurable GMV lift—not vanity offline metrics.

You will collaborate with PM, search infra, and marketplace integrity squads.

What you will do

Design offline metrics that mirror online constraints; lead power analysis for experiments.
Prototype ranking changes with guardrails for cold start, diversity, and abusive listings.
Coordinate model handoffs: feature contracts, monitoring, and rollback plans.
Present readouts to GM-level stakeholders with crisp storytelling.
Mentor junior scientists on causal pitfalls and Simpson’s paradox in two-sided markets.

What we look for

PhD/MS in quantitative field or equivalent industry depth in search/recommendations.
Python + SQL + PyTorch; large-scale logging and experimentation platforms.
5+ years owning ranking models in prod.

Nice to have

Snowflake dbt analytics loops.
Integrity / trust & safety collaboration experience.

Habilidades que buscamos

Qué implica cada capacidad en este rol — no solo una lista de palabras clave.

Python
Production Python for data pipelines, model code, APIs, and automated tests—not notebook-only workflows.
PyTorch
Training and inference with PyTorch: reproducible experiments, checkpointing, and deployment-minded exports.
SQL

Herramientas y stack

Plataformas y productos mencionados para este rol (APIs, IDEs, BBDD vectoriales, CRM, diseño, etc.).

SnowflakeTool
Regular use of Snowflake in the search & recommendations stack—configuration, debugging, and team conventions.

Encajas muy bien si…

Adaptado a esta oferta — úsalo para comprobar tu encaje antes de aplicar.

You can show evidence in your application: Outline an A/B you ran on ranking—hypothesis and guardrails.
Several of these show up in recent shipped work—not only on your CV: Python, PyTorch, SQL, and Snowflake.
You have owned ranking, retrieval, and online experimentation in production: debugging live issues, running postmortems, and iterating from real user or business signals.
You are comfortable with the hybrid rhythm (Hybrid · London, United Kingdom)—onsite collaboration when it matters, deep work when remote.
You explain trade-offs (quality, cost, latency, safety) in plain language—with numbers or examples, not buzzwords.
You read the full listing (comp: £100k–£130k + equity, benefits in At a glance) and your expectations align.

Aplicar

Solo cuentas candidato: añade tu titular y bio en , y opcionalmente un enlace o PDF de CV para que los reclutadores vean tu CV completo. Luego escribe un breve pitch — las candidaturas usan el correo de tu cuenta.

Lo que pide la empresa

Outline an A/B you ran on ranking—hypothesis and guardrails.

Inicia sesión con cuenta candidato para aplicar

Regístrate, añade titular y bio; luego podrás adjuntar enlace o PDF de CV en Mi cuenta antes de aplicar. Así las candidaturas quedan ligadas a tu perfil.

Iniciar sesión Crear cuenta candidato

Sugerencias

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Senior Applied Scientist — Search & ranking

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