Senior C# Developer

You'll work on mission-critical banking software used by major retail banks, combining deep C# expertise with SQL Server, Blazor and modern cloud-ready architectures. This is an ideal opportunity for a senior engineer who wants to shape technical direction and lead the adoption of AI within a regulated financial environment. About the Role

You'll take ownership of key C#/.NET components within a large, enterprise-grade retail banking platform. Expect hands-on development, architectural input, and leadership around integrating AI into workflows such as fraud detection, customer analytics, automation, decision support and operational efficiency.

This role suits a senior engineer with strong full-stack skills and a passion for modernising financial systems., * Design, develop and maintain C#/.NET applications used across retail banking operations.

• Build modern, responsive front-end interfaces using Blazor.
• Work extensively with SQL Server to design schemas, optimise queries and improve data performance.
• Lead the introduction of AI and machine-learning capabilities into existing products and workflows.
• Collaborate with product, data and architecture teams to define AI use cases and integration patterns.
• Drive best practices across coding standards, testing, CI/CD and secure development.
• Mentor mid-level developers and contribute to long-term technical strategy.
• Ensure solutions meet regulatory, security and performance requirements for financial institutions.

• 8-10+ years' professional experience developing enterprise systems in C#/.NET.
• Strong experience with SQL Server, including performance tuning, stored procedures and schema design.
• Hands-on experience building modern web UIs with Blazor (Server or WebAssembly).
• Solid understanding of distributed systems, API design and cloud-ready architectures.
• Experience integrating automation, analytics or AI-driven features into production systems.
• Strong problem-solving skills and the ability to work in regulated, high-assurance environments.
• Excellent communication skills and the ability to influence technical direction.

A leading financial software house specialising in retail banking platforms is seeking an experienced Senior C# Developer to join its core engineering team. This is a high-impact role where you will modernise existing systems, build new customer-facing applications, and play a pivotal part in introducing AI-driven capabilities across the organisation.