Catalog-first commerce studio · Kyiv

Storefronts built to survive a real product catalog.

Ledgerline Commerce maps categories, variants, filters and redirects before a single page is styled. Then we wire local payment statuses and stock rules so your team sees exceptions before customers do.

Book a paid discovery sprint Review build phases

Commerce operations specialist reviewing a product catalog matrix on screen

Evidence / ledger excerpt

Numbers we hand over, not numbers we promise

Catalog SKUs mapped1
1,240

Median per discovery sprint

Payment status matches2
99.4%

After nightly reconciliation

Inventory sync latency3
180ms

Median multi-warehouse round trip

Stock rules documented4
12

Written into the handover checklist

  1. Across four 2025 storefront engagements, counted at catalog freeze.
  2. Provider ledger export versus order table, live and test split.
  3. Webhook round trip measured from warehouse update to storefront stock badge.
  4. Oversell, reserved cart, negative stock, and multi-warehouse mismatch cases.

Catalog architecture

Category, then variant, then stock rule.

The catalog is mapped before a single storefront page is designed. Attributes, filters, import fields and stock rules are settled in a working matrix, so a variant name never quietly decides what is buyable.

Printed catalog audit sheet beside a laptop showing a three-level category, variant and stock rule table
Handover sheet from a retail catalog audit, Kyiv
Working matrix excerpt: rules resolved at cart level
Variant Attributes Rule at cart
Home coffee / brewers
Pour-over 02 Matte black, 600 ml Reserve on add, block oversell
Immersion Sand, 800 ml, gift box Low stock guard at 5
Grinders
Hand grinder Steel burr, 40 mm Net stock across two warehouses
Electric grinder Burr set, 38 mm Backorder allowed, 7 day lead
Filters and paper
Filter pack 100 pcs, size 02 Bundle override, single SKU stock
  • Amber marks an exception, never a category. Low stock, negative stock and warehouse mismatch carry it; healthy rows stay quiet.
  • Each rule becomes an acceptance test and a redirect entry before launch, so payment and inventory screens agree with the catalog.

Integration ledger

Payment providers, wired and monitored.

Every provider we connect gets an adapter, an explicit status map, and a reconciliation check against the order total. Test and live keys are tracked separately, so nothing reaches production untested. Merchant approval and provider terms stay with the provider.

Book a discovery sprint
Provider status ledger · Kyiv, Ukraine
Provider Method State Env
LiqPay Card, Apple Pay Adapter verified Live
Monobank Card, installments Adapter verified Live
WayForPay Card, cash on delivery Adapter verified Test
Privat24 Card Status map review Test
Nova Poshta Delivery, COD reconcile Adapter verified Live

Status dots describe adapter test coverage and reconciliation checks, not the state of a merchant account.

Inventory operations

Stock counts that surface the exceptions, not just the total

Reserved carts, low stock, negative stock and multi-warehouse splits are flagged at the row level. Oversell rules sit on the variant, so a warehouse can stop a sale before the item reaches a customer.

  • Reserved: carts held for 30 minutes
  • Available: on hand minus reserved
  • Amber rows need a decision today
Warehouse snapshot, updated 09:42 EET
SKU Warehouse On hand Reserved Available State
CL-4482 Kyiv main 240 36 204 Synced
CL-4483 Kyiv main 18 22 -4 Oversell blocked
ST-7702 Dnipro 7 3 4 Low stock, limit 10
CL-4484 Two warehouses 52 51 1 Split mismatch
NR-1191 Lviv 96 12 84 Synced
NR-1190 Lviv 0 0 0 Backorder hold
ST-7703 Kyiv main 1,240 180 1,060 Synced

Each exception row carries a resolution rule and an owner in the handover checklist.

05 / Implementation sequence

Six ruled phases, each closing with an artifact

Scope is fixed at paid discovery. Every phase ends with a document you can audit before the next one opens, so catalog, payment and stock logic do not drift mid-build.

  1. 01

    Paid discovery sprint

    Catalog inventory audit, provider shortlist, redirect baseline.

    Week 1 Scope sheet
  2. 02

    Catalog architecture matrix

    Category to variant to stock rule, plus attribute and filter map.

    Week 2 to 3 Catalog matrix
  3. 03

    Local payment integration

    LiqPay, Monobank and WayForPay adapters with status mapping.

    Week 3 to 4 Status ledger
  4. 04

    Inventory exception rules

    Reserved carts, low stock, negative stock, multi-warehouse mismatch.

    Week 4 to 5 Rule spec
  5. 05

    Acceptance testing

    Oversell scenarios, checkout states and redirect validation.

    Week 5 to 6 Test log
  6. 06

    Handover checklist

    Access transfer, provider terms, and open-risk register.

    Week 6 Handover pack

Hosting, licences, SMS, delivery API and provider fees sit outside the development tiers. See the full build phases.

Next step

Begin with a paid discovery sprint, not a blind quote

We map the catalog matrix, the payment adapters, and the inventory exceptions first. Fixed tiers follow once the scope is written down.

What your scope notes should cover
CatalogCategory, variant, and stock rule in one matrix
PaymentsAdapter setup and status mapping for local providers
InventoryOversell limits, reserved carts, multi-warehouse mismatch
HandoverAcceptance tests, redirect map, provider status ledger
Send your scope notes Review the build phases

Or write directly to contact@alphaweforge.com. Replies on business days.