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C# Senior Software Developer

Job Posted: 22 days ago

Salary: £ 50,000 - 75,000 / Annum
Job Type: Permanent
Location: Preston

Expire in: 6 days

Job Description

C# Senior Software Developer 

My client is seeking a talented C# Senior Softwar 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.

Key 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

Required Technical Skills

C# (strong proficiency)
	
ASP.NET MVC or .NET Core Web API
	
MVC concepts: Routing, Controllers, Filters, Middleware, Model Binding, Dependency Injection
	
Entity Framework Core (DbContext, DbSet, OnModelCreating, LINQ) and ADO.NET/Raw SQL experience
	
MS SQL Server or MySQL database experience
	
HTML5, CSS3, JavaScript
	
REST API expertise and integration (HttpClient, RestSharp, JSON serialization/deserialization, CORS, HTTPS, API security)
	
Git version control and CI/CD workflows (Azure DevOps, GitLab CI preferred)
	
Hosting experience with IIS or Kestrel
	
Docker basics (preferred but not mandatory)

Preferred/Bonus Skills

Experience with fintech or payments API integration
	
Cloud services (Azure, AWS) hosting basics
	
Webhooks and event-based APIs
	
Structured logging tools (Splunk, ELK, App Insights)
	
Performance optimization and API rate-handling

Why Join My Client

Be part of a pioneering fintech/secure banking technology company
	
Opportunity to mentor and lead junior developers
	
Work in a supportive, collaborative, and technically driven environment
	
Gain experience in high-security, mission-critical software projects

Interested? Please Click Apply Now!

C# Senior Software Developer

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Looking for your next career move? Join a top company hiring C# Senior Software Developer job near me in Preston! This is your chance to work on exciting projects, grow professionally, and enjoy a rewarding career with competitive pay and excellent benefits. Whether you're an experienced professional or looking to take the next step, this role offers the perfect opportunity to enhance your skills and make an impact. Don’t miss out—apply today via Vita CV and take your career to the next level!