Freelance
Umbraco developer

I help businesses and web agencies with Umbraco – from new websites and further development to upgrades, troubleshooting and support. Whether you need help with a single task or an experienced Umbraco developer for a longer-term collaboration.

Tell me about your task →Need an Umbraco upgrade?

Typical tasks

What I do in Umbraco

New Umbraco sites

From content structure and document types to a complete Umbraco website that's easy to maintain and edit.

Further development

New features, custom modules and improvements to existing Umbraco websites – including sites built by others.

Umbraco site takeover

Review of code and configuration to provide a clear understanding of the solution and a solid foundation for reliable operation and future development.

Support and maintenance

Ongoing Umbraco support, troubleshooting, bug fixes and updates to keep your website stable and secure.

Security updates

I monitor security vulnerabilities in Umbraco and .NET and apply security updates promptly – also available on an hourly basis.

Integrations

Integration with CRM, ERP, accounting systems and AI services, along with REST API development and headless Umbraco solutions.

E-commerce & payments

E-commerce, booking systems, online payments, subscriptions and customer self-service – integrated with Umbraco.

Performance & SEO

Faster Umbraco websites with a focus on page load times, Core Web Vitals, caching and technical SEO.

Umbraco + Blazor

Interactive Umbraco websites, customer portals and web apps with Blazor – built on a solid .NET foundation from backend to frontend.

Umbraco Cloud

Development, further development and upgrades of Umbraco websites – on both Umbraco Cloud and other hosting platforms.

Umbraco Upgrades

Upgrading and migrating older Umbraco websites to a modern, supported version – carefully planned and thoroughly tested.

Read about upgrading →

Anything else?

Need help with something else in Umbraco? I've worked with most aspects of it and can help you find a solution.

My clients

Who I Work With

I work with both web agencies and businesses on Umbraco development. For agencies, I can step in as a freelance Umbraco developer when extra capacity or specialist expertise is needed. I can join your existing team or work as a subcontractor – remotely or on-site.

For businesses, I provide new Umbraco websites, further development, support and upgrades of existing solutions. I can also take over a website from a previous developer or agency, ensuring it stays maintained and continues to evolve.

Portfolio

Umbraco cases

View the full portfolio →

2021 – now · Modernising an Umbraco Portal

Håndværkernøglen

Håndværkernøglen's website has been modernised and extended over the years with new features and integrations. I've migrated the platform from Umbraco 7 to 11, optimised key pages to achieve up to 100/100 in Google PageSpeed, and automated administrative tasks through integrations with the Danish company register, AI and self-service features.

Umbraco 11
ASP.NET Core
Web API
SEO
Tailwind CSS
Alpine.js
ChatGPT API
CVR-register API

Read the case →

2022 – now · Modernizing the Online Shop and Business Systems

Børne-Foto

Børne-Foto needed to modernize its online shop and internal systems without disrupting daily operations. I've updated the solution step by step, allowing old and new systems to work alongside each other. The new online shop is faster and easier to use, and online orders have increased by 35%.

ASP.NET Core
Umbraco 11
Blazor
SQL Server
Entity Framework
Web API
Tailwind CSS
Alpine.js

Read the case →

More Umbraco projects

2026 Opus Group Troubleshooting and optimization of an existing Umbraco 17 solution in Microsoft Azure, using Azure Metrics and Application Insights to investigate performance and other issues.

Umbraco 17
Azure
Azure Metrics
Application Insights
.NET Core
C#
Git

2025–26 KBH El-Teknik Development of a new website using Umbraco 17 as a headless CMS with a Blazor frontend. The entire solution is built on C# and .NET, from content management to the user-facing frontend.

Umbraco 17
Blazor SSR
.NET Core
C#
MS SQL
Tailwind CSS
Git

2022–23 Gorm Agency Backend and full-stack development of Umbraco Cloud websites for the agency's clients. Working with Umbraco 10 and 11, ASP.NET Core, APIs and frontend customizations.

Umbraco Cloud 10-11
.NET Core
Web API
ASP.NET MVC
C#
JavaScript
SCSS

Testimonials

What do customers say?

Jon has played a decisive role in the development of our platform. With deep expertise in .NET, Umbraco and API integrations he has delivered a stable, scalable and intuitive solution.
His professional approach, fast deliveries and technical insight are absolutely top class!

Eric Jernberg · Managing director and owner, Håndværkernøglen

I have worked with Jon for several years on updating and optimising our entire IT setup.
Jon has delivered not only technical solutions but also outstanding service, and his professional approach and ability to find tailor-made solutions have been decisive for our company's digital development.

Ole Nielsen · Managing director and owner, Børne-Foto

Frequently asked questions

Can you take over an Umbraco website developed by someone else?

Yes. I have extensive experience working with existing Umbraco solutions, including websites built by other developers or agencies. I typically start by reviewing the code and configuration to understand the solution before making any changes.

Can you help with a single task, or do I need an ongoing agreement?

No ongoing agreement is required. I handle everything from individual bug fixes and small changes to larger development projects. I also offer ongoing Umbraco support and maintenance when needed.

How much does a freelance Umbraco developer cost?

I generally work on an hourly basis, but fixed-price agreements are also possible for well-defined tasks. The cost depends on the scope and complexity of the project. Get in touch with a description of what you need, and I'll provide an estimate.

Which versions of Umbraco do you work with?

I've worked with Umbraco for many years, from older versions to the latest .NET Core-based releases. I help with both maintaining existing websites and upgrading or migrating to newer, supported versions.

Do you work as a subcontractor for web agencies?

Yes. I work with web agencies as a freelance Umbraco developer, both on individual projects and as additional development capacity over longer periods. I can join an existing development team or handle tasks independently.

Do you only work remotely?

I primarily work remotely, but I'm also available on-site by arrangement, for example during project kickoffs, workshops or when working together in person makes sense.

Need an Umbraco developer?

Ready for new tasks. Call or write – I usually reply within 24 hours. Remote, hybrid or on-site by agreement.

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FreelanceUmbraco developer