Senior C#/.NET Developer

Salary: £62,000 - 102,000 per year

Requirements:

• Good Optimizely CMS development expertise using versions 11 and 12; alternatively highly experienced using Umbraco CMS.
• Good knowledge of coding and architectural patterns and coding approaches.
• Good commercial expertise in .NET Framework 4.5+, .NET Core 6+, C#12, ASP.NET Core MVC / Razor Pages.
• Experience with source control such as Git.
• Experience with JavaScript / TypeScript.
• Experience with HTML, CSS / SASS.
• Good problem-solving skills and attention to detail.
• A collaborative working style and willingness to work with a diversely skilled team.
• Ability to communicate technology solutions to non-technical external stakeholders and parties.
• Desirable: Optimizely Content Cloud Certified Developer.
• Desirable: Azure Certifications.
• Desirable: SQL Server / Azure SQL using Entity Framework Core.
• Desirable: Familiarity with Blazor WebAssembly for building interactive client-side web applications.
• Desirable: Azure Cloud Services.
• Desirable: Azure DevOps.
• Previous experience developing bespoke web applications using .NET Core.
• Understanding of the full software development life cycle, ideally Agile/Scrum.
• Experience working in a full technical project team, ideally for a digital agency or technical digital consultancy.
• Experience working across multiple streams of work concurrently, involving several clients.

Responsibilities:

• Develop and maintain Optimizely-centric solutions as well as bespoke solutions written using .NET.
• Implement Optimizely and associated technologies, and bespoke software solutions using .NET Core / .NET Framework, C#12 and ASP.NET Core.
• Collaborate effectively with QA, BA, PM, DevOps and other members of the wider Engineering and agency teams.
• Be accountable for the timely and technically sound delivery of assigned tasks.
• Proactively drive the technical definition of software delivery project planning, including scope, time estimates and technical skills.
• Ensure technical implementation and delivery processes such as unit testing, source control, coding standards, deployments and technical documentation are followed, improved and evolved as practices mature.
• Help ensure the technical objectives of the Optimizely Engineering team are met.
• Maintain and enhance our reputation for Optimizely and .NET technical excellence.

Technologies:

• .NET Framework
• ASP.NET
• Azure
• Blazor
• Cloud
• CMS
• CSS
• DevOps
• Git
• JavaScript
• MVC
• SASS
• SQL
• TypeScript
• Umbraco
• WebAssembly
• Web

More:

We are offering a hybrid working arrangement with 3 days in the office in Manchester and 2 days remote. The salary is 55,000 to 60,000 per annum, and the role is a permanent, full-time position in the IT sector. We are a recruiter for a Human Resources Services role, and the position focuses on Optimizely and .NET engineering within a collaborative team environment.

last updated 36 week of 2026