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Permanent

Principal C# Developer .Net AWS - FinTech

Client Server
City
money-bag £100000 Annual
Posted: 10 August 2026 (Today)
Closing date: 09 September 2026
Ref: 3149967142

Principal C# Developer / Engineer (C# .Net AWS Python) London / WFH to £120k Would you like to join a growing and profitable scale-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As a Principal C# Developer you will architect and build highly performant and scalable solutions using the Microsoft tech stack and SOLID design principles, collaborating with cross functional Agile project teams in 2 week Sprints, you''ll be an advocate of best practice and ensure software is delivered to schedule. There''s a host of new features and development work and you''ll also help to drive the adoption of AI within the business, introducing things like chat bots and exploring the use of AI to make process improvements. This is an impactful role where you''ll report into and collaborate with the CTO, you''ll have a lot of visibility and quickly see the results of your work. Location / WFH: There''s a hybrid policy, with two days in the brand new London offices and flexibility to work from home two days a week (Thursdays and Fridays). About you: You are an experienced Software Developer / Engineer with a strong knowledge of modern best practice You have strong C# backend development skills, ideally also Python coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems You have a strong knowledge of Computer Science fundamentals such as OOP, Data Structures, ..... full job details .....

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