Senior Mathematical Software EngineerLocation: London Permanent: Full time, on site Salary: £125,000 to £140,000A specialist insurance business is building out its analytical software capability, supporting a proprietary simulation platform used across underwriting, exposure management, actuarial and portfolio decision making.This is a complex engineering role sitting in the engine room of the platform. The system processes large and varied datasets across multiple lines of business, balance sheets, quota share structures and MGA platforms. Examples of the scale involved include millions of location records, large property portfolios and complex marine exposure data.This is not a traditional Back End role focused on web applications or APIs. The work is centred on mathematical software engineering, simulation, large scale data processing and building maintainable code (Julia) for a complex production platform.The business does not require prior insurance experience. They are looking for a strong software engineer with excellent fundamentals, experience working on complex systems and the ability to build code that remains reliable, understandable and relevant over time.Why joinWork on a proprietary simulation platform used directly by actuarial, risk and underwriting teamsBuild software that supports complex modelling, portfolio analytics and business critical decision makingSolve engineering problems involving large datasets, simulation logic and platform scaleJoin a growing