07Payment Integration

Getting paid online shouldn't be the hard part.

Integrating a payment provider correctly — with webhooks verified, sensitive keys kept server-side, and failure states handled — so transactions are reliable and secure.

Payment Integration

Where payment integrations go wrong

Payment bugs are expensive in a way UI bugs aren't. A missed webhook, an unverified callback, or a key exposed to the frontend can mean lost revenue or a real security hole. This has to be done carefully, not quickly.

Why it matters

Secure by design

Secrets and sensitive logic stay server-side. Nothing exploitable sits in the frontend.

Webhooks handled correctly

Payment events are verified and processed reliably, including retries and failures.

Multiple flows supported

One-off payments, subscriptions, or escrow-style release, depending on what you need.

Clear audit trail

Every transaction is logged and traceable, not just 'it worked.'

Payment Integration in practice

Money handled carefully

Every payment event is verified and logged, with sensitive keys kept off the client entirely.

What I provide

Payment bugs cost money, so this is done deliberately — here's what's covered on both the money-in and money-tracking side. Every failure state gets handled explicitly, because a missed webhook or an unverified callback is a real financial risk, not just a UI glitch. Nothing sensitive touches the browser, and every transaction is logged so you can trace it later.

What's included in Payment Integration
Secure by design
  • Server-side key security
  • Verified webhooks
  • Full transaction logging

Payment provider integration

Connected properly, with sensitive keys and logic kept off the client.

Webhook handling and verification

Payment events verified and processed reliably, including retries.

Secure server-side key management

Nothing exploitable sits exposed in the frontend code.

Success/failure state handling

Both outcomes handled explicitly, not just the path where everything works.

Transaction logging

Every transaction recorded and traceable, not just assumed to have gone through.

Testing across payment scenarios

Failures, retries, and edge cases tested before anything goes live.

Technology

FlutterwaveNode.jsFirebase Functions

How I work

01

Discover

Understand the goal, the constraints, and what actually needs to exist.

02

Plan

Scope the work, pick the approach, and set a realistic timeline.

03

Design

Structure and interface decisions made deliberately, not defaulted to.

04

Develop

Built on a clean, maintainable foundation — not just made to work once.

05

Test

Checked across devices, edge cases, and real conditions before launch.

06

Launch

Deployed carefully, with a plan for what happens if something needs to roll back.

07

Improve

Monitored after launch, with fixes and improvements as real usage comes in.

Have a project in mind?

Need payments wired in properly? Let's get it done right the first time.

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