Full Stack CMS Developer (Sitefinity/Umbraco/C# .NET)

TSD is a leading technical integration and engineering company that specializes in bespoke applications, e-commerce, and systems integration. We work on a variety of projects, ranging from real-time bidding systems and high-traffic e-commerce websites to big-data analytics and high-speed transactional middleware.

As a Full Stack CMS Developer at TSD, you will be responsible for developing and maintaining both frontend and backend components of web applications using Sitefinity and Umbraco CMS. You will collaborate closely with our design and development teams to deliver robust and scalable solutions. You will work on implementing new features, enhancing existing functionality, and optimizing performance and security.

Our tech stack primarily includes C#, .NET (Core and Framework), Sitefinity, Umbraco, JavaScript, and related frontend frameworks. You will work in an agile development environment, participate in daily stand‑ups, and collaborate with team members using tools like Slack and Git.

This is a full‑time, remote position, allowing you the flexibility to work from anywhere. Our team is spread all over the UK, and we've been successfully working remotely for over 10 years.

Requirements

Full‑time role (37.5hrs pw), fully remote, Full Stack CMS Developer with expertise in C# and .NET (Core and Framework). Knowledge of Sitefinity, Umbraco or DynamicWeb CMS platforms.

Key Responsibilities

• Developing and maintaining CMS-based web applications using Sitefinity, Umbraco with C# .NET
• Collaborating with design and development teams to implement new features and functionalities
• Creating responsive and user-friendly websites using HTML, CSS, and JavaScript
• Integrating Sitefinity/Umbraco CMS with third‑party systems and APIs
• Optimizing websites for performance, scalability, and security
• Performing code reviews and ensuring coding best practices
• Debugging and troubleshooting issues as they arise
• Keeping up-to-date with the latest trends and technologies in web development

Requirements

• 3+ years of experience as a Full Stack CMS Developer
• Expertise in Sitefinity or Umbraco and C# .NET
• Strong knowledge of HTML, CSS, and JavaScript
• Ability to work both independently and collaboratively in a team
• Good problem‑solving and communication skills

Benefits

Fully remote, casual dress, company events, unlimited holiday, up-to £55,000pa (dependant on experience) and a chance to make a difference to the company and our customers.

No recruiters, agencies or people who aren't (but still are) off‑shore agencies please

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