Oscar Peterson
Co-Founder & Technical Director
4+ years building digital platforms and core IT for B2B businesses, his own previous ventures among them.
About Stackslim
Fewer platforms.
Better business
Stackslim designs, builds and runs the warehouse, order, ecommerce and internal systems that wholesalers, distributors and specialist retailers depend on. From the first call to the day-to-day running, it stays with the same people.
Founded late 2025. Based in the UK. Clients in several countries.
2founders who design, build, run and support every system
£0transaction fees or per-seat licences, on any system
100%client satisfaction on Clutch.co*
4 hoursor less before you hear back, Monday to Friday
*From client reviews published on Clutch.co.
How we work
Four things we hold ourselves to.
On every project, and every month after it goes live. If a decision doesn't pass these four, we don't make it.
Your business first
We do well when your platform does. So we build what saves you time and money, and skip what doesn't.
Reliable and robust
We go deep rather than fast, and still deliver on time. Work that holds up beats work that demos well.
Clear communication
No jargon, no surprises. You always know what we're building, why, and what it costs.
Long-term partnership
We stay past launch. Support, improvements and design changes are included, at no extra cost.
Our story · Founded late 2025
We didn't like the status quo.
Stackslim was founded in late 2025, after a couple of years spent inside the tech B2B businesses run on, online commerce and admin and ERP systems in particular. The pattern was hard to miss: bloated enterprise pricing, hidden fees, and support that ends when the project does.
So we started with a simple question. What if a business stack could be current, fast and good to look at, without the inflated monthly fees, scaling costs, per-order charges and transaction fees?
Today we serve businesses in several countries: wholesalers, specialist retailers and service providers. They stay because we deliver on that promise. A reliable platform, unlimited support, and a direct line to the people who built it.
We're not trying to be the biggest agency, and we're not a jack of all trades. What we take on, we deliver. Every time.
Commerce platform
Admin & ERP
Invoicing
Spreadsheets
Support desk
Five platforms, one system.Stackslim
A direct line
The people behind Stackslim.
The founders are hands-on in every project, from the first call to the day-to-day running. Either of them is a message away.
Harry Todd
Co-Founder & Operational Director
Sales background at a leading UK B2B retail and tech wholesaler. Handles operations and business administration across every project.
Talk to the people who'll build it.
Tell us what your business runs on today. We'll say what we'd build first, and what we'd leave alone.
hello@stackslim.co.uk · Replies within 4 hours, Monday to Friday