Senior Backend Developer
Summary
Build and maintain .NET-based backend services for a CMS-driven platform, integrating Umbraco CMS with front-end components and third-party APIs while optimizing performance and security.
A UK-based company is hiring a skilled Backend.NET Developer to join our team and play a key role in delivering a high-impact project. The ideal candidate will have a strong background in Microsoft technologies, excellent problem-solving skills, and experience integrating complex back-end functionality with front-end systems.
You will work closely with the Head of Development and collaborate with a front-end developer to bring this project to life. A functional specification and project requirements will be provided, but you will be responsible for designing and implementing technical solutions that meet business needs.
Responsibilities
- Integrate front-end components into Umbraco CMS
- Build and customize back-office editors for modules
- Enhance back-office UX to ensure ease of use for content editors
- Create templates, configuration options, and theming capabilities for components
- Develop and integrate RESTful APIs and handle third-party integrations (e.g., CRMs, payment gateways, marketing tools)
- Implement job search functionality within the system
- Optimize performance, scalability, and security
- Collaborate in an Agile/Scrum environment to deliver features iteratively
Requirements
- Umbraco CMS (v8/9/10+): custom development, templates, back-office extensions; familiarity with Umbraco APIs, content models, and package integration
- Microsoft .NET & C#: ASP.NET Core / .NET Framework, C#, Razor, Visual Studio; strong LINQ skills
- Database: Microsoft SQL Server, T-SQL, stored procedures, query optimization
- Source Control & Delivery: Git (Beanstalk/SmartGit or equivalent), CI/CD (Azure DevOps, GitHub Actions), IIS config & URL rewrite
- Engineering Foundations: MVC architecture; design patterns (DI, Repository, SOLID); performance optimization, caching, and security best practices
- Collaboration & Delivery: clear communication, strong debugging/problem-solving, ability to translate business requirements into robust technical solutions; Agile/Scrum experience
Preferred
- Deploying Umbraco on Azure (App Services, SQL, Blob Storage)
- Experience with headless CMS (Umbraco Heartcore)
- SEO and accessibility best practices
- Professional growth opportunities with access to training and certifications
- Collaborative and innovative team culture with direct impact on projects
- Work with a forward-thinking UK-based company in the employer marketing space