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Staff Applied Scientist (Perm or Contract)

London, England💼 Contract💰 $180,000–$180,000🗓 2026-03-15 → 2026-07-31

Core

Design and build models for campaign optimisation, audience quality modelling, inventory allocation, and measurement in programmatic advertising to improve CTR, CPA, and ROAS.

Role type

Staff Applied Scientist (Perm or Contract)

Builds

Real-time optimisation systems for campaign performance, audience scoring, and inventory pricing/allocation

Domain

Programmatic advertising, data collaboration, privacy-preserving analytics

Deliverable

production ML models

Required skills

optimisation or bidding systems in programmatic advertising, applied ML and statistical foundations, production ML experience, fluency with the programmatic ecosystem, cross-publisher or cross-supply optimisation

Preferred skills

privacy-constrained environments, cohort-based targeting, clean rooms

Technologies

Scala services, SDKs, data pipelines

Responsibilities

Design and build models for campaign optimisation using publisher-side and advertiser outcome data; Develop approaches to inventory allocation accounting for audience quality and supply dynamics; Own models end-to-end from conception through production monitoring; Influence product direction by identifying opportunities and framing feasibility; Run experiments and prototypes to validate ideas and evolve them into production systems

Seniority

Staff, hands-on technical leadership with broad scope and autonomy

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