C# Senior Software Developer

My client is seeking a talented C#Senior Software Developer to join their Preston-based team. This role offers an exciting opportunity to lead projects, mentor junior developers, and work on high-impact, secure banking solutions. You will be a key contributor to web portal and API development, ensuring performance, security, and reliability in a dynamic environment.

This role is ideal for developers with strong technical expertise who are looking to grow into leadership or team management responsibilities.

• Develop and maintain web portals using ASP.NET MVC / .NET Core
• Design and integrate REST APIs with internal and third-party services
• Implement secure authentication mechanisms (JWT, OAuth2, API Keys)
• Connect applications to relational databases using Entity Framework Core (DbContext, LINQ, Migrations)
• Debug and trace request flows from UI ? Controller ? API ? Database ? Response
• Maintain and publish API documentation via Swagger / OpenAPI
• Ensure API security, reliability, and performance (error handling, retry logic, logging, timeouts, CORS)
• Collaborate with database, infrastructure, and QA teams for portal and API releases
• Participate in code reviews, version control, and CI/CD deployment workflows

• C# (strong proficiency)
• ASP....