Senior iOS Engineer — Remote UK, FinTech/AI

Addition Solutions is seeking a Senior iOS Mobile Engineer to own native mobile development in a fully remote UK-based role. The contract is 6 months initially, outside IR35, with a day rate of £350–£450 and remote work from anywhere in the UK.

You will design, develop and maintain high-quality iOS apps in Swift, collaborate with cross-functional teams, and ensure performance, security and reliability in highly regulated or AI-native consultancy environments.

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