Machine Learning / Data Science Researcher - Bristol (Hybrid | 3 days office) Full-time | Permanent Are you a researcher who enjoys solving problems where the solution doesn't already exist? Do you like working at the intersection of machine learning, mathematical modelling, and real-world systems-and want to see your work directly shape commercial products? If so, this could be a strong next step. We're working with a fast-growing B2B SaaS business operating at the cutting edge of behavioural and data science. Their platform helps some of the world's most recognisable consumer brands understand complex human systems and make better decisions from them. They're now looking for a dedicated ML / mathematical researcher to help evolve the core intelligence behind their product. This is a foundational hire in the research function-someone who will shape the next generation of their modelling capability. The Opportunity At the heart of the product is a behavioural and network-based modelling engine that underpins everything the company delivers to clients. This role will focus on improving, extending, and rethinking that engine-bringing in new research, testing novel approaches, and helping translate theory into scalable applied systems. You'll be working closely with the founding team and senior stakeholders, including one of the co-founders (a PhD-level researcher), to ensure research outputs directly influence pr...