Custom Development for whatever does not fit a package
Smart-UI takes on inherited codebases, performance work and ongoing maintenance, including older .NET and PHP systems whose original team has moved on. Work starts with a 1 to 2 week assessment rather than a proposal to rebuild.
What does Smart-UI take on outside a standard build?
Smart-UI takes on inherited codebases, performance work and ongoing maintenance: older .NET and PHP systems whose original team has moved on, sites that need Core Web Vitals fixed, and applications that need someone to own them.
Work on an inherited system starts with an assessment rather than a proposal to rebuild: what the system does, what state it is in, and what is safe to change.
| Engagement models | Assessment first, then fixed-price or retainer |
|---|---|
| Typical duration | Assessment 1-2 weeks |
| Team shape | 1-2 engineers |
| Stack | Legacy .NET, PHP, WordPress, React, Node.js |
| Markets served | United Kingdom, United States, Australia, European Union |
One team, whatever the piece turns out to need
The engineers who scope a piece are the ones who build it, whether that is rescuing someone else's half-finished project, connecting two systems that were never meant to meet, or a redesign that has to keep every URL. React, Node.js, Python and the infrastructure underneath, with the repositories and accounts in your name from day one.
Our Custom Services
What tends to arrive here: work with a clear end, a fixed price, and no obvious box to put it in.
Custom Software Development
Internal tools and applications for a workflow no product on the market covers, built deliberately narrow so there is almost nothing to train anyone on.
Website & Web Application Development
From a marketing site to an application with accounts, billing and permissions, scoped as fixed-price stages so you can stop after any one of them.
UI/UX Design & Development
Design and build by the same team, which removes the handover where half the detail usually goes missing.
Cloud Solutions & Integrations
Moving a system onto AWS or GCP, or connecting it to the services it depends on, with the environment defined as code so it can be rebuilt rather than remembered.
API Development & Integrations
Connecting systems that were never designed to meet, including the ones offering an undocumented endpoint, an XML feed, or a CSV dropped on an FTP server at 3am.
Automation Solutions
Removing a manual process somebody repeats every week: n8n workflows, scheduled jobs, or an AI agent where the step genuinely needs judgment.
Consulting & Strategy
A technical read on what you already have before money is committed: what to keep, what to replace, in what order, and what each part is likely to cost.
Email Templates Coding
HTML email that survives Outlook, Gmail and dark mode, tested across clients rather than checked once in a browser and hoped for.
Website Maintenance
Updates, dependency patching, monitoring and backups that have been restored at least once, on a plan sized to the site rather than a standard retainer.
Website Redesign
A new design over the same content, keeping URLs, redirects and rankings intact, because a redesign that loses the traffic is not an improvement.
Something that does not fit a standard package?
Describe the problem and what has already been tried. A fixed-price estimate and a plan come back within 48 hours.
DuelMasters
Delta Lake
Woodhill Property
Wild Earth- View All Projects
Frequently Asked Questions
Our custom services include HTML email template development, website performance optimisation, website maintenance retainers, emergency bug fixes, website redesigns, and integration projects that do not fit standard service categories.
Yes. We conduct a performance audit (Core Web Vitals, Lighthouse, WebPageTest), identify bottlenecks, and implement fixes including image optimisation, caching strategies, code splitting, and CDN configuration.
Yes. Our maintenance retainers cover security patches, CMS and plugin updates, uptime monitoring, bug fixes, and small feature additions. Retainers are available from 10 hours per month.
From the blog
All articlesInheriting a legacy .NET backend nobody wants to touch
What to do when a business-critical system runs on old .NET, the people who wrote it are gone, and rewriting is not an option. The order of work that holds.
The hardest part of a legacy system is staffing it
The code was never the problem. Finding one senior engineer willing to own an old .NET backend was, and what fixed it was the job description, not the pay.
Send the scope, the deadline and what it has to connect to. A fixed-price estimate and a delivery plan come back within 48 hours, with no obligation to proceed. If it is easier to talk it through first, the numbers below reach the same people.