Senior Software Engineer – Kotlin & Payments (Hybrid London)

Company: Formula.
Apply for the Senior Software Engineer – Kotlin & Payments (Hybrid London)
Location: London
Job Description:

Formula. is seeking a Senior Software Engineer to join a major UK bank’s transformation project in London. The role is hybrid with 3 days onsite per week and a focus on rebuilding the payment system to support multiple methods and channels.

Required are deep Kotlin expertise, experience with payment gateways, solution architecture, backlog creation from high-level requirements, and prior leadership of delivery teams. Initial term: 6 months, Inside IR35.

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Posted: August 10th, 2026