Skip to main content

API Development & Integrations

Payment gateways, banks and third-party APIs, connected properly

Most integration problems show up after launch: a webhook that silently failed, a customer charged twice, a transfer that never got credited. We build integrations that expect things to go wrong, so they can be traced and fixed when they do.

Talk to us about your project

You probably need this if…

  • Customers occasionally pay but your system doesn't record it, and someone has to fix it by hand.
  • You need your app to talk to a payment gateway, a bank, a logistics partner or a government API.
  • Partners want to integrate with your platform and you need a documented API for them.
  • Your current integration works "most of the time" and nobody knows why it sometimes doesn't.

What you get

Payment integrations

Paystack, Flutterwave, Monnify, Interswitch and Stripe: checkout, subscriptions, transfers and dedicated virtual accounts.

Webhooks done right

Signature verification, idempotency so nothing is processed twice, retries, and a daily reconciliation job that catches anything missed.

Your own API

A documented REST API for partners or your mobile app, with authentication, rate limiting and versioning.

Messaging and identity

SMS and OTP through local providers like Termii, transactional email, and WhatsApp notifications.

Monitoring

Alerts when an integration starts failing, so you hear about it before your customers do.

How a project runs

  1. Read the fine print

    We go through the provider's docs, sandbox behaviour and settlement rules before designing anything.

  2. Build against the sandbox

    Including the failure cases: declined cards, timeouts, duplicate webhooks, reversed transfers.

  3. Go live carefully

    Small real transactions first, reconciled by hand against the provider's dashboard.

  4. Document it

    Written documentation of how the integration works, so your next developer isn't guessing.

What we typically use

  • Paystack
  • Flutterwave
  • Monnify
  • Interswitch
  • Stripe
  • Mono (open banking)
  • Termii
  • REST & OpenAPI

These are tools we use often, not a fixed list. We choose the stack for each project based on what fits it best: your budget, your team, what you already run, and how the system needs to grow.

Common questions

Can you fix an existing integration someone else built?

Yes. We start with a review of the code and the provider's logs to find where payments are being lost, then fix it.

Can you integrate more than one payment gateway?

Yes, and it's often a good idea: if one provider has an outage, payments can route through the other.

Do you build APIs for other developers to use?

Yes, with OpenAPI documentation, test keys and a sandbox so partners can integrate without needing us on every call.

Have something like this in mind?

A few lines about the problem is enough to start. We'll reply with questions and an honest view of how we'd approach it.

Start the conversation