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Formula.

Senior Software Engineer

Formula.
United Kingdom · Full-time · Mid-Senior

Senior Software Engineer : £650 Inside IR35 : Hybrid London (3x per week) : Banking client


A major UK bank is seeking Senior Software Engineers to support on a major transformation project to rebuild the payment system, replacing their existing enterprise solution.


The new product will support a broad range of payment methods and channels across both in-person and digital environments.


Key requirements:

  • Specific domain expertise in payment gateway systems
  • Full Stack : Kotlin (will accept wider JVM with the ability to transition) and React.js
  • Solution architecture and design capabilities
  • Taking high level requirements and creating structured backlogs


Key details:

  • Up to £650 per day Inside IR35
  • 3 days onsite per week (London)
  • 3 months initial term (subject to extension)
  • Immediate starters


Apply now or reach out directly to find out more.


Due to the high volume of applications, not all applicants will receive feedback.


Lead Software Engineer : £650 Inside IR35 : Hybrid London (3x per week) : Banking client

Key Skills

Ranked by relevance

kotlin jvm
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Posted
May 21, 2026
Type
Full-time
Level
Mid-Senior
Location
London Area
Company
Formula.

Industries

Software Development

Categories

Engineering

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