Senior Data Scientist - Operational Research

London - Hybrid💼 Full-time🗓 2026-06-24 → 2026-09-26

Core

Design, build, and evolve optimization models and solvers for Relay's last-mile delivery network to optimize scheduling, assignment, and pricing decisions.

Role type

Senior individual contributor operational research scientist

Builds

Production decision systems for last-mile logistics optimization

Domain

Logistics / Operations Research / Mathematical Programming

Deliverable

production ML models

Required skills

mathematical programming, meta-heuristics, algorithm design, solver development, Python, Rust, Julia, C++, large-scale optimization

Preferred skills

hands-on network problem solving, production system evolution, cross-functional collaboration

Technologies

Python, Rust, Julia, C++

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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.