Service area

Billing, payments and online sales

We design digital workflows for service records, payments and online customer or partner interactions.

How the solution works
Online shopping and mobile payment
Goods delivery from a warehouse
Developer writing code on a laptop

Select a stage to explore the work

Online shopping and mobile payment — Julio Lopez · Pexels Goods delivery from a warehouse — Wojciech Kotlicki · Pexels Developer writing code on a laptop — Mikhail Nilov · Pexels

Service or order. Record items, prices and calculation rules.

Charge. Calculate the amount using agreed rules.

Payment. Receive confirmation from the payment system.

Reconciliation. Update status and reconcile transaction history.

Service directions 12 ↗
How we approach the work

What this service covers

Scope depends on business requirements, payment providers, bank interfaces and operating rules.

Billing and subscription services

We define tariffs, periods, activation, cancellation, discounts and adjustments. Charges and balances are traceable. Agreed examples test tariff changes, partial periods and corrections.

Payments and banking integrations

We configure provider checkout, status callbacks and reconciliation. Duplicate events, failures and refunds follow agreed flows. Payment success depends on confirmation, not just reaching a thank-you page.

Online stores and B2B portals

We build catalogues, search, baskets, checkout and customer accounts. B2B flows can include individual terms, roles and approvals. Stock, prices and statuses connect to accounting where suitable interfaces exist.

Illustrative scenario · not a completed project

How this could work at your site

A customer pays a monthly service through a portal. The period and charge are shown, checkout goes to the provider and the balance updates after confirmation. Repeated notifications do not duplicate payment, and disputed operations remain traceable.

Discuss a project ↗
  1. Service or order

    Record items, prices and calculation rules.

  2. Charge

    Calculate the amount using agreed rules.

  3. Payment

    Receive confirmation from the payment system.

  4. Reconciliation

    Update status and reconcile transaction history.

What you receive

Deliverables and handover

  • Agreed calculation rules and customer flows.
  • Order, charge and payment-status history.
  • Tested operations, permissions and operator guidance.
Construction licences and certificates ↗

Scope, equipment, schedule and price are agreed after reviewing your requirements and surveying the site where needed. This example illustrates the approach; the final design is tailored to your site.

ТОО «СМУ БАСТАУ»

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Tell us about the site and the task so we can discuss the right scope.

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