Work

Three builds you can actually use.

Two of these are working interfaces loaded with sample data; the third is live on the web. Click around and judge for yourself.

Product for salePHP · MySQLKeepa API

404Deals

Amazon arbitrage deal finder

The client

404Deals, our own subscription platform for UK Amazon sellers who buy stock to resell and need to know, quickly, whether a product is worth buying.

The problem

Sellers were checking each product by hand. Opening the listing, reading the historical price chart, guessing at fees, and working out whether there was margin left. Three to five minutes of research per product, repeated hundreds of times a week, and still plenty of bad buys.

What we built

One line per product with the history already pulled, the Amazon fees, FBA costs and VAT already deducted, and the net profit and ROI already calculated. Three to five minutes of research became a one second glance: buy it or skip it.

What makes it different

It comes to you. Set the filters for the kind of product you actually buy, and the platform sends matches to Telegram and Discord, plus a desktop push notification in Chrome. The platform tells you when something worth buying appears, so you can get on with the rest of your day.

The hard part

Making live third-party data behave. Keepa is rate limited by a token budget, so the fetching had to be queued and scheduled to stay inside quota without going stale. Fee and VAT logic had to survive Amazon’s different categories and business discounts. And the alerting had to fan out to three channels at once.

100,000+Products scanned
£2m+Potential profit surfaced
5 monthsDesign to launch
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Internal softwareThe Edinburgh Butter CompanyNode.js · SQLite

MayFlow

Operations platform for The Edinburgh Butter Company

The client

The Edinburgh Butter Company, a producer selling to shops and distributors, with several people working in the system at once.

The problem

The business ran on spreadsheets. Orders, customer delivery days, courier sheets, pricing and production yield each lived in a different file, and every one of them was updated by hand. The work was repetitive, easy to get wrong, and impossible to see the whole of at once.

What we built

One platform for the week. Customers with their delivery days, carriers and pricing; the order form; courier sheets that print themselves; products and pricing with bulk changes; production and yield tracking; and a dashboard that shows the week, the month, the year and lifetime side by side. Work that took hours of manual entry is now one or two clicks.

What changed

Everything is measurable, so it can be analysed. The business can look at yield, revenue and output over time and get a predictable picture instead of a guess. It is used every working day across the office.

The hard part

Forecasting. Predicting what the coming weeks look like meant combining standing orders, one-off orders, delivery patterns and production yield cycles into a single forward view, then keeping it accurate as the week changes underneath it.

Product names and figures shown in the demo have been changed.

DailyIn use across the office
16 weeksDesign to launch
1 to 2Clicks for what took hours
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Built for a clientCHHS Hygiene and SafetyNode.js · SQLite

CHHS Course Platform

Online food safety training for CHHS Hygiene and Safety

The client

CHHS Hygiene and Safety Ltd, a UK food safety training provider. They certify people in food hygiene and allergen awareness, and sell both to individuals and to businesses training whole teams.

The problem

Training taught in a room does not scale, and a paper certificate is only as good as the employer’s willingness to believe it. CHHS needed to sell courses online, deliver them properly, prove what each learner had actually passed, and let companies buy training in bulk for staff who do not have work email addresses. They also needed to write and change the courses themselves, without a developer in the loop every time the material moved on.

What we built

course.chhs.co.uk. A learner works through narrated slides, passes a short quiz at the end of every part, sits a final exam and gets a PDF certificate with its own serial number. Anyone, including an employer with no account, can type that serial into the site and see whether it is genuine, whose it is, which course and what they scored. Individuals buy by card; companies buy seats in bulk at volume pricing and enrol their own staff. Two courses are live, Elementary Food Hygiene and Allergens, and CHHS adds more themselves.

What makes it different

Two things. CHHS owns the content: staff build courses in an admin builder, dropping in a folder of slides and narration, dragging parts into order, writing the questions and setting the pass mark. Narration belongs to a slide rather than a page number, so reordering a course can never leave the audio on the wrong slide. And the company side is built for how workplace training actually happens: an employee signs in on the manager’s computer with just their name and date of birth, trains as themselves, then “Save & Exit” hands the machine straight back to the manager for the next person. No work email, no second password to lose.

The hard part

Making the certificate mean something. Parts unlock in order, every slide has to be reached before the quiz will open, each attempt gets a freshly shuffled paper, the correct answers never reach the browser, marking happens on the server, and a fail sends the learner back through the material before they re-sit. On top of that, a learner is pinned to the version of the course they started, so republishing never changes the material under someone mid-way, and an issued certificate is a frozen record of what was passed that later edits cannot rewrite. Seats work the same way: a credit is spent at the moment an employee is enrolled, in the same transaction that checks it, so two quick clicks can never oversell a company’s seats.

2 coursesLive and selling
15 modulesNarrated and quizzed
6 weeksDesign to launch
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