Things that may not be going the way you want
"It's got a lot of bugs"
Pages failing. Counters showing -1. Error messages instead of texts. Cache not updating when you change something. Layouts broken.
"Where is our agency?"
You had an agency create your Umbraco website and then - poof. No signs of life. And they didn't ever bother to suggest a support contract. Now you're left to change. And luck.
"It's slow"
And taking your business down with it. People don't stay in a page that takes ages to load because someone had the splendid idea of loading 30k items in memory just to get a counter - every single time.
"I don't dare touch it"
You want to create new things. You really do. But it feels like a Jenga tower - one wrong move, and everything collapses.
"Upgrade? Are you joking?"
Yes, it's old. Yes, it's out of support. But it's so badly made that upgrading means actually rebuilding it from scratch. And paying more than it cost you to create the original.
"We just don't have a clue"
Someone asked for CSP. Caching. WCAG. Faceted search. Endpoints for third party apps. But you just don't have the technical knowledge, so you end up patching things around and making them worse.
You halted every attempt to improve, and now it's drowning you.
Legacy Umbraco versions are not supported any more
You're still on v7 and v8 and "it runs fine". Where "fine" means no support, security holes, incompatibilities, and failures in integrations. The code that was written ten years ago just doesn't cut it any more.
Upgrades get harder with time
Good luck trying to go from v7 to v17. Half or your add-ons are discontinued, your integrations need a full rewrite, and that content structure you so painfully devised - it's now out of date as well.
Getting slower and buggier over time
Your content got larger, your visitors increased - but your Umbraco build is not up to the task any more. It was built for a different usage scenario, and now it's just degrading more and more every day.
Request a technical assessment
We’ll have a look at your setup and honestly tell you where it’s likely to fail, slow down, or block future growth, as well as whether it's worth to upgrade, rebuild, or forget it all together.
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 a 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
We moved to DotSee in a moment of crisis with our previous developer. I’ve been nothing but impressed from the outset – highly responsive, extremely knowledgeable and quick to help with both small tweaks and major improvements. A definite win for us.
Sarah Wixon
Operations Director, Pie Recruitment