Senior Data Scientist (FP&A) (Full-time) - G MASS Consulting

ace has partnered with a prestigious, leading international fund and corporate services organisation to appoint an experienced Senior Data Scientist who will provide senior advisory and technical guidance across a foundational data programme, at the point where the structural decisions are being made. Our client is midway through a significant change agenda: consolidating a fragmented core administration estate and investing seriously in clean data, consistent data processes, and data quality measurement. This is a senior role focused on judgement and output. You will sit alongside an internal data lead, a small data engineering function and an FP able to articulate and defend the trade-offs between competing modelling approaches. Expert SQL; strong Python for analysis and validation. Practical experience of the Microsoft data stack — Fabric, Synapse, Power BI semantic models, and ideally Azure AI Foundry. Demonstrable experience defining data quality frameworks and KPIs in an enterprise setting. Evidenced capability-building experience. A material part of this role is raising the standard of an existing team. Executive presence and credibility with technology leadership and finance stakeholders. Comfortable operating at enterprise, not internet, data scale. Benefits Please note that this role is full-time, five days per week, hybrid in London. Start date is ideally immediate, with the ability to earn up to £800 a day.