Senior Decision Scientist, Marketplace

London - HybridFull-time2026-11-09 → 2026-11-10

Core

Designing decision systems for a two-sided marketplace to optimize driver booking, parcel matching, and pay recommendations.

Role type

Senior IC decision scientist (marketplace)

Builds

Data applications, monitors, and alerts that drive booking and pay decisions

Domain

Logistics / Two-sided marketplace / Gig economy

Deliverable

production ML models

Required skills

SQL, experimental design, causal inference, stakeholder management, system design, data application development

Preferred skills

Experience with matching or pricing models, experience in fast-growth environments, ability to work without clean experiments

Technologies

Claude, agents, SQL

Responsibilities

Decide which marketplace problems are real, design decision signals for booking and matching, build data tools to ship answers, validate changes in the field, get decisions from squad leads

Seniority

Senior, hands-on IC

About Relay

Relay is a digital banking platform that gives self-made business owners the tools and know-how to be great with money—bringing clarity, confidence, and control to every dollar earned, so they can turn hard work into lasting success. We do this by replacing financial guesswork with real visibility, transforming cash flow from a constant source of stress into a clear signal owners can use to run stronger, more resilient businesses.