Custom Payment Integrations
When a certified integration does not exist, we build one that behaves like it does.
For proprietary platforms, internal tools, and legacy software: we build to your gateway or acquirer's APIs with the same rigor as a native integration.
What this integration does
- Connects your platform to a payment gateway via REST, SOAP, or SDK.
- Handles tokenization, recurring, refunds, disputes, and webhooks end-to-end.
- Provides documentation, tests, and monitoring for long-term stability.
Problems it solves
- Homegrown platforms with hard-coded payment logic.
- Legacy software with no vendor path to modern gateways.
- Multiple platforms each speaking to payments differently.
- Integrations that break silently every time a webhook shape changes.
Typical data flow
- 1Your platform initiates a payment request through the integration.
- 2Gateway processes and returns a result via API + webhook.
- 3Integration posts events (capture, refund, dispute) back into your system.
- 4Monitoring and alerting catch drift before it affects customers.
Business benefits
- A native-feeling integration without waiting on a vendor roadmap.
- Stability from real tests, real monitoring, and real documentation.
- Freedom to change gateways later without rewriting business logic.
- Cleaner audits with a real integration boundary between platform and payments.
Implementation Process
- 1
Design
We produce a written integration design and API contract.
- 2
Build + Test
We build in your environment or ours; test against gateway sandboxes.
- 3
Ship + Monitor
We deploy, document, and set up monitoring for webhook and gateway health.
Compatibility
- • Any gateway with a documented API (Fiserv, TSYS, Elavon, Adyen, Stripe, Braintree, etc.).
- • Any platform your team can grant an integration boundary to.
- • Cloud, on-prem, and hybrid deployments.
Security considerations
- • Hosted fields, iframes, or SDKs to keep PCI scope minimal.
- • Encrypted secrets, least-privilege API keys, and audit logs by default.
- • Webhook signature verification and replay protection.
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Related case studies
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Frequently asked questions
Do you work with our engineers?+
Yes. We can lead the build, embed with your team, or hand off a reference implementation.
Who owns the code?+
You do. We deliver documented, tested code in your repositories.
What about future gateway changes?+
The integration boundary makes gateway swaps far less painful — that is a deliberate design goal.
How is it supported long-term?+
Optional retainer or fully self-managed. Either way, monitoring and docs come with it.
Book an integration consultation
Tell us about your current stack — we'll return a written integration plan with scope, timing, and next steps.
Ready to see what your setup could look like?
Book a working session focused on custom payment integrations. Clear recommendations, no obligation.
- • 150+ software platforms reviewed
- • 1,500+ merchant environments evaluated
- • Under 24-hour average response time
- • 7–14 business day onboarding