Marketplace web application
UmmYeah — case study
A two-sided local food marketplace: home cooks list what they're making, neighbours find it by postcode, order, pay and collect.
The project
What was needed
UmmYeah is not a brochure site — it is a business that only exists as software. Cooks need to open a "kitchen", list dishes with photos and prices, set collection times and get paid. Customers need to find food near them, order, pay by card and know when to collect. And because both sides are private individuals, the money has to flow safely between them without the platform holding it.
It also had to work on a phone in someone's kitchen, be simple enough for a first-time seller, and handle the awkward real-world cases — a dish selling out, an order being cancelled, a cook going quiet.
What Bath IT built
The work
What this demonstrates
Software, not a brochure
A marketplace has no template to start from: two kinds of user, money moving between them, stock, orders, collection, search — all of it built and tested, all of it on a phone. UmmYeah shows we can take a business idea that only exists as software and build the software. If your project is an application rather than a website, that is the capability you're buying.
Inside the site
Beyond the home page
Browsing kitchens by postcode
How it works, for cooks and customers
On a phone
Built for the screen most people use
Most visitors to a site like this arrive on a phone, often on mobile data. Every page is designed for that first — readable, tappable, quick — and then scaled up to a desktop, not the other way round.
Technical notes
How it's built
Built as a custom application rather than on a CMS or a marketplace plugin — the ordering, payout and account logic is the product
Stripe Connect handles onboarding each seller and routing each payment; card details never touch the site
PostgreSQL behind it, with rate-limiting and session handling on the public endpoints
Mobile-first throughout: the browse, order and seller screens were designed for a phone first
Maintained by the team that built it; the next features are built the same way
Where it is now
Live and trading at ummyeah.food with kitchens listed across the Somer Valley; still being built on.
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