A2S VENTURE

Payment Integration

Payment integration that keeps revenue flowing.

Cards, subscriptions and wallets in one checkout, with the receipts, refunds and reconciliation your team needs, on accounts you own.

Sprint board · Your payments

This sprint · Across your products● On track

To do

TAXTax handling
RECONBank matching

In progress

SUBSSubscriptions

Done

CARDCard checkout
REFUNDRefund flow

One customer's year

One customer's year, billed right.

Pick a step to see the moments where billing usually goes wrong.

Billing timeline

Step 1 of 4

They subscribe

A clean checkout, with the right price, currency and tax.

  • They subscribe
  • They upgrade
  • A payment fails
  • Finance closes the month

Signs you need it

When billing starts costing you customers.

Sound familiar? Book a call
  1. 01

    Failed payments go unnoticed

    Customers lapse without anyone chasing them.

  2. 02

    Plan changes are done by hand

    Every upgrade means a manual invoice.

  3. 03

    Finance reconciles in spreadsheets

    Payouts do not match what the system says.

  4. 04

    You cannot take local payments

    Customers abroad leave at checkout.

  5. 05

    Refunds need an engineer

    A simple request becomes a support ticket.

What we build

From checkout to the bank.

Payment systems are mostly about what happens after the first charge.

Pick one to see more

Payment Integration

Checkout

A short checkout with the payment methods your customers actually use.

  • Cards and wallets
  • Local payment methods
  • Multiple currencies
  • Card details stay with the provider
Talk to us about this

Build or buy?

Hosted billing or custom billing?

Almost nobody should build all of it. The question is how much on top of a provider.

CompareHosted billingStripe Billing and similarCustom on a providerYour rules, their rails
Time to launchStronger on this: DaysWeeks
Upfront costStronger on this: LowerHigher
Unusual pricing modelsLimitedStronger on this: Yes
Fees at scalePercentage on topStronger on this: Often lower
Card data security burdenStronger on this: Handled for youStill handled by the provider
Best whenYour pricing is simple plans, and you want to start charging soon.You have usage pricing, marketplaces or rules a hosted tool cannot express.

How we work

From a money map to a clean first payout.

Six steps, the same on every project. AI-assisted workflows speed up the build, an engineer reviews every change, and at each step there’s something you can check for yourself.

Security built in from the first sprint, not added at the end.

“Good software takes work off your plate. We build what you need, show you as we go, and tell you straight when something isn’t worth building.”
Ali Raza, Co Founder

Adding engineers to a team instead? Start with a trial sprint on real tickets.

Book a call
  1. Step 01

    Discovery and scope

    We start with what you are really building, not just a list of features. Goals, users, limits and edge cases are agreed before anyone writes code.

    Scope agreed before we build

    A written scope and milestone plan for you to approve.

  2. Step 02

    Architecture and planning

    We map the system before the build: how the parts connect, where the data goes and which APIs it needs. Fewer surprises, and no big rewrites halfway through.

    A plan you can read

    The architecture and milestones, in plain words.

  3. Step 03

    Build in short sprints

    We work in short cycles with something usable at the end of each one. You see progress the whole way, so problems get fixed while they are small.

    Working software, not status reports

    Real features you can try at each milestone.

  4. Step 04

    Testing

    Every release is tested the way people will really use it. Integration bugs and slow spots show up before your users find them.

    Releases you can trust

    Test plans and automated checks on every release.

  5. Step 05

    Release

    Only stable builds go live. We release step by step, so a problem is caught early and can be rolled back quickly.

    You own what we build

    The code, cloud and app store accounts are yours.

  6. Step 06

    Handover or keep building

    Once it is live, you choose: a full handover with documentation, or we keep building with the same team and the same rhythm.

    We stay after launch

    Support and new features, or a documented handover.

Before you commit

Find out if you need custom billing at all.

Many businesses do not. Tell us how you charge and we will say.

Ask us first

Technology and tools

Payment tools, on accounts you own.

What you get

What you own when we hand over.

Your money and customer records stay with you.

Your merchant accounts

Payments go straight to you, in your name.

The billing code

In your own repository, with tests on every money path.

A money map

How each payment moves, written in plain words.

Finance reports

Records your team can reconcile against the bank.

How to get started

Two ways to work together.

Choose the one that fits where your product is today. If you are not sure, we will tell you plainly on the first call.

Fixed price

Build a product

Starting something new?

We scope the work, agree a fixed price and deliver in milestones. Best for MVPs, new systems and AI projects with a clear goal.

Starts withDiscovery and scope
PaymentsPer milestone
TeamSet in discovery
Best forMVPs, ERP, new products
Book a call

You leave with a clear scope and plan

Monthly plan

Add engineers to your team

Need more hands on a live product?

Our engineers join your standups, repo and sprint board on a monthly plan. Best for teams that need to ship before they can hire.

Starts withA trial sprint
PaymentsMonthly
TeamEngineers + PM
Best forTeams with a live product
Start a trial sprint

Scale up or down as your roadmap changes

Opens your email app with the message ready to send. We only use your details to reply to you.

Book a call

Talk to the people who build it.

We map how money moves through your business, then tell you how much a provider can handle and what, if anything, needs custom work.

  1. 1

    Tell us about it

    A few lines on the form is enough.

  2. 2

    Talk it through

    What you are building, where it stands and what you need next.

  3. 3

    A clear next step

    Scoping, a trial sprint, or an honest “you don’t need us”.

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A2S Venture · FAQ

Do you store card details? No. Card data stays with the payment provider, which keeps your security burden far lower.

FAQ

Ask us anything.

Common questions about this service. Pick one to see the answer.