We connect payment acceptance and build the logic around it: reconciliation, refunds, duplicate notifications, subscriptions. We have worked with more than 35 different payment systems. From four weeks.
This is a starting price. The exact figure and timeline come from your technical brief, and the review is free.
Who it is for
You need this once the money side of a product has outgrown a single payment button. The signal is usually reconciliation: it stops fitting in a spreadsheet and someone starts losing Monday morning to it. Platforms that split money between several sellers reach that point earlier than the rest. Before quoting we draw the path of one payment, from the payer to your account.
Problems we solve
· A payment went through and the order stayed unpaid
· Daily reconciliation is done manually in a spreadsheet
· Refunds are processed by hand and leave no trace
· A subscription charge fails and nobody notices
· The provider sends a notification twice and the order is duplicated
What is included
· Provider integration and payment state machine
· Idempotent handling of repeated notifications
· Refunds and partial refunds
· Automatic daily reconciliation with a discrepancy report
· A payment log where every state change is stored
· Sandbox testing and a staged production release
What we can build
· Payment acceptance on sites and in apps
· Subscriptions and recurring billing
· Settlement and split payments between sellers
· Internal ledgers: balances, wallets, transaction history
How we work
· We draw the money path end to end, including edge cases
· We agree the state machine and the behaviour on failure
· We implement and test in a sandbox
· We release, switch on reconciliation and monitoring
· We review the reports together during the first weeks
Engagement models
· Fixed price for one provider and a clear scenario
· Time and materials for several providers and complex settlement
· Support: updates when a provider API changes
Stack
LaravelNestJSPHPTypeScriptPythonCeleryNext.jsReactVue 3Inertia.jsBladeTailwind CSSPostgreSQLMySQLRedisMeilisearchiOSAndroidDockernginxPM2ObsidianTelegram Bot APIJSON-RPCClaude API
Projects for this service
IT for FinTech and Payment Companies
2021year the central bank registered the institution
A complete payment company built for a central bank licence: the settlement core, merchant and agent back offices, and client apps for iOS, Android and Telegram.
People obtained a verified wallet status through a website: apply, pay, submit documents, get a decision. At its peak the service handled up to a thousand applications a month.
We build and run products that move money: wallets, processing, billing and reconciliation. This is the direction where we have 14+ years of practice and 35+ different payment systems behind us.
We connect payment acceptance so that the money arrives, refunds work and the accounting matches. Local providers and international gateways, from one week.
We know what hurts in a subscription product: isolation of customer data, billing, and onboarding a new customer without a developer.
Frequently asked questions
How long does a payment integration take?
From four weeks when the job is the full payment logic with reconciliation, refunds and a ledger. Connecting a single provider is faster and is often part of a website or app project.
What does the price depend on?
The payment side of a product starts from $2500. What moves it up is the number of providers, the scenarios involved and whether reconciliation is required. Before we quote, we draw the money path from the payer to your account. That work costs nothing, and it often removes requirements you do not need.
Do we need a licence?
That is a question for lawyers, not for us. We do the technical side: integration, ledger, security and reconciliation. We do not give legal advice and we do not pretend to.
How do you prevent double charges?
Idempotent notification handling: a repeated message does not create a second order. This is the most common integration defect and the first thing to verify.
Local providers, local protocols, and a server of yours that they call. A short map of the payment work for a team planning market entry from outside the country.
6 min read
Discuss your task
Leave a name and a phone number, and we will ask the rest in the conversation.
Have an idea for a new product, or need to grow an existing one?
Tell us about the task. We will study it and propose an option that makes sense technically and economically.
