Senior Consultant at Chi Square Economics Quantitative Researcher – competitive salary – Madrid (Spain) or Newcastle upon Tyne (UK) An ambitious and fast-growing consultancy is hiring a Quantitative Researcher to join its expanding investment quant team, based in either Newcastle, UK or Madrid, Spain. The firm specialises in software development and consulting for clients in the financial services and investment sectors, offering a unique opportunity to work on a wide range of real‑world quantitative challenges. Role As a Quantitative Researcher, you’ll work across the full lifecycle of quant‑driven projects, including: Developing and maintaining pricing models, trading tools, and risk analytics systems Solving complex problems using applied mathematics, modelling, and data analysis Sourcing and preparing data, then building and coding the final production‑ready solution This role blends elements of data science, economics, and software engineering to deliver high‑impact results. To be a good fit, you’re likely someone who thrives on solving hard problems, enjoys building tools from the ground up, and has a genuine passion for coding and modelling. Requirements A strong academic background, with a postgraduate degree from a top‑tier university in Mathematics (or a numerical subject) Proven experience working in the financial services space (ideally at a