Got one or more of the problems below? Keep reading!
Bugs and critical issues
If your website is failing to serve clients your reputation goes downhill. Even the smallest bug can cause frustration.
Current agency dissappeared
Your current agency created your Umbraco website and then - total radio silence. No support, no maintenance, and they won't implement new functionality even if requested.
Perfomance problems
It's not just a slow site - it's slowing your business down. A list that's not loading, a page that takes ages to render - they drive visitors away.
Afraid to create something new
"If it works, don't touch it" they say, but you know that a site untouched is a site that deteriorates over time. The idea of a rebuild or - alas - a totally new build terrifies you.
Stuck on v7/v8
You want to upgrade, but you fear it'll be too complicated and you'll probably lose data in the process. You stay stuck on v7/v8, where it's difficult to evolve, let alone stay secure.
Low technical expertise
You need experts, but nobody can currently respond effectively to your actual requirements.
Your issues become urgent after a while. Here's why.
End of support for legacy Umbraco versions
Your v7 and v8 Umbraco setups are already exposed to risk and can't be extended properly since the ecosystem has moved on to newer versions. They slowly but steadily degrade.
Upgrades get harder with time
The longer you leave your Umbraco site without upgrading it or migrating it to the latest version, the more difficult it becomes to do so - outdated plugins, legacy code, complex integrations make it harder as time goes by.
Performance and stability degradation over time
As content volume and complexity grows, your Umbraco site needs good care. Without it, it'll gradually become slower and may start introducing critical errors.
Request a technical assessment
We’ll review your setup and tell you where it’s likely to fail, slow down, or block future growth.
Finding the right Umbraco partner shouldn't be that hard.
Most teams don't struggle because Umbraco CMS is difficult. They struggle because ownership of their Umbraco website is unclear.
Projects get delivered, but Umbraco support and maintenance fade. Upgrades get postponed. Performance issues pile up. The original developers move on, and no one wants to take responsibility. That's where most generic agencies and short-term contractors fall short.
DotSee is different by design. We are a 100% Umbraco-focused team built for long term support, complex Umbraco upgrades, and projects that require continuity, especially when projects outlive internal teams, vendors, or original assumptions.
We work with digital teams and agencies worldwide as an experienced Umbraco development partner, offering Umbraco expertise, clean ownership, and support that continues after launch.
One Umbraco partner. From implementation to long-term maintenance.
Umbraco Implementation
Over 120 Umbraco websites launched for organisations of all sizes. From straightforward builds to complex, integration-heavy platforms.
We use our internal Themelion framework to standardize common Umbraco functionality, reduce bugs, lower long-term costs, and speed up delivery - while keeping projects fully maintainable and upgrade friendly.
Umbraco thrives with integrations, and so do we. Whether it's CRMs, search, or custom systems, we build with future change in mind.
Upgrades and Updates
Whether we built your site or not, we handle Umbraco upgrades and updates safely, from routine minor releases to full LTS and major version upgrades.
We’re trusted by digital teams and other Umbraco agencies to modernise legacy builds, migrate older versions, and stabilise complex setups without unnecessary rewrites or downtime.
Support & Maintenance
Our Umbraco support and maintenance plans are SLA-backed and designed for long-term stability instead of firefighting.
We provide proactive monitoring, site health reports, and early fixes before issues become critical. No disappearing after launch, no handovers to junior teams.
Support is paired with flexible retainers, so you can continuously improve performance, add features, and evolve your Umbraco site as your business grows.
What's been keeping us busy
120+ websites developed
We have developed over 120 Umbraco websites from scratch for medium and large-sized businesses, as well as for educational and cultural institutions. And that's only over the past few years.
- We helped an Umbraco Gold Partner Agency in the UK as well as several other UK-based agencies develop new websites for their clients.
- We helped multiple Greek agencies develop Umbraco solutions for large organizations.
- We developed Umbraco websites for end clients from scratch using our Themelion codebase which provides all common website features from day one.
30+ upgrades performed
We have performed numerous upgrades from Umbraco v7, v8, and v10, to Umbraco v13, handling everything from complex integrations to custom code.
- We helped an Australian Platinum Partner agency provide its clients with upgrades from Umbraco v7, v8, and v10 to v13.
- We helped multiple Greek and international agencies upgrade their clients' Umbraco websites.
150+ websites supported
Agencies and end clients trust us to support their websites. And support doesn’t just mean fixing issues. We enhance functionality, add new features, and help sites grow.
- We are providing constant support for large sets of multiple agencies' clients worldwide.
- We support sites developed for end clients through retained hours and SLA-backed total support agreements with unlimited P1 / P2 incident handling, monthly site reports, and proactive maintenance - we spot and fix issues before they become critical.
“DotSee is our reliable support partner.
The team's professional attitude, expertise and flexibility made for an efficient collaboration and high-quality end-results.”
Lasse Kollerud
Head of Sales, Marketing & Partner Management, incadea
“DotSee delivered a flexible and dynamic content platform to help us launch Moralius on the international scene. The team's professional attitude ensured a smooth collaboration and α high quality end-result.”
Isidoros Vakropoulos
Technical Lead, Moralius
Their ability to grasp complex requirements and implement them intelligently is excellent.
Dan Evans
Owner, Plan 9 Website Development