E-Commerce and Retail Platforms That Handle Real Volume
Talk about your projectThe short version
Retail software is mostly a counting problem, and counting is harder than it sounds once stock moves through several channels at once. Two customers buy the last unit within the same second; a return arrives before the refund clears; a warehouse count disagrees with the system and both are partly right. We've built marketplaces, stock control and inventory platforms, and we treat those races as the design problem rather than the edge case.
What makes it hard
What this sector demands
Stock accuracy across channels
The moment you sell in more than one place, stock becomes a consistency problem. Overselling costs you the order and the customer; overcautious reservation costs you sales you could have made.
Two-sided marketplaces
Vendors need onboarding, catalogue control, order visibility and payouts — effectively a second product behind the storefront, and usually the part that's underestimated.
Payments and their aftermath
Taking payment is the easy half. Refunds, partial refunds, chargebacks, failed captures and split payouts are where the reconciliation work actually lives.
Peaks that don't warn you
Traffic arrives in spikes around campaigns and seasons. Architecture that's fine at average load can fall over exactly when the sales are.
What we build
What we build
Multi-vendor marketplaces
Vendor onboarding, catalogue management, commission and payout logic, plus the admin tooling to intervene when something goes wrong.
Inventory and stock control
Real-time stock across locations and channels, with reservation logic, movement history and reconciliation against physical counts.
Warehouse operations
Receiving, picking, packing and dispatch, designed for handheld use on a warehouse floor rather than a desk.
Custom storefronts
Where an off-the-shelf platform genuinely doesn't fit — unusual catalogue structures, B2B pricing rules, or bespoke checkout requirements.
Order and delivery tracking
Real-time status for customers and staff, including the states that aren't a clean progression: partial shipments, splits and returns.
Retail automation
Order routing, supplier reordering, marketplace listing sync and reconciliation, so the repetitive parts stop consuming staff time.
How we work
How we approach E-Commerce & Retail
- 01Model stock and order state first — most retail bugs are really state-modelling bugs
- 02Decide the consistency rules for overselling explicitly, because there's a real trade-off either way
- 03Design payment flows to include refunds, partials and failures from the start
- 04Build operational tooling alongside the customer-facing product, not after it
- 05Load-test against campaign-shaped spikes, not steady average traffic
- 06Instrument reconciliation so disagreements surface as reports rather than surprises
Proof
E-Commerce & Retail work we've delivered
Client names are withheld by agreement — the case studies describe the problem and how it was solved instead.
FAQ
Questions we get asked
Use the platform if you're selling ordinary products in an ordinary way — it'll be cheaper and faster, and we'll tell you so. Custom earns its cost when the catalogue, pricing or fulfilment model genuinely doesn't fit, when you're running a marketplace with vendor payouts, or when the operational system behind the storefront is the actual product.
By deciding the trade-off deliberately rather than inheriting it. Stock is held in one authoritative place with reservation at the point of intent, and channels reconcile against it. You can bias toward never overselling, which idles some stock, or toward selling everything, which occasionally oversells. Both are valid; picking without realising you picked is what causes trouble.
Usually yes, via API, database or scheduled file exchange depending on what the system offers. Where a real-time API doesn't exist, we design around a sync interval you can live with and make any drift visible rather than silent.
Yes, including Stripe, PayPal and regional gateways. We treat the post-payment path — refunds, partial refunds, failed captures, payouts and reconciliation — as part of the integration rather than a later phase, because that's where most of the real work is.
That's an architecture decision made early, not a setting toggled later. We identify which paths must stay up under load, load-test those against spike-shaped traffic, and make sure the parts that can degrade do so without taking checkout with them.
Related
Where to go next
Building something in e-commerce & retail?
Let's talk it through.
Tell us what you're trying to build and we'll tell you what's straightforward, what's genuinely hard, and what we'd do first.
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