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API Integrations

Your CRM doesn't talk to your payment gateway. Your legacy system doesn't talk to your new app. We build the connections that make separate systems function like one. That's ranged from wiring in a single payment gateway to building middleware that keeps a dozen systems in sync in real time. We built the payment, SMS, and fundraising integration for an NGO's donation platform: three separate third-party systems that had to work together seamlessly for a donor completing a transaction. Every integration is designed around what happens when a call fails, not just when it succeeds, because that's the part most integrations skip.

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Overview

Built for what happens when a call fails

We built the payment gateway, SMS gateway, and fundraising integration for an NGO's donation platform, three separate third-party systems that had to work together seamlessly for a donor completing a transaction. That's the kind of integration work we do: connecting systems that were never designed to talk to each other.

API integration work ranges from wiring in a single payment gateway to building middleware that keeps a dozen systems in sync. We design for what happens when a call fails, not just when it succeeds.

What's Included

What you get with API Integrations

Payment gateway integration

Stripe, Razorpay, PayPal, and regional gateways, tested against real failure cases.

SMS & communication gateways

Transactional and marketing messaging wired in reliably.

Third-party API integration

CRMs, ERPs, and external services connected properly.

Custom middleware

When systems need translation logic between them, not just a direct call.

Failure handling & retries

What happens when the other system is down: planned for, not discovered in production.

Digital signature & e-sign integration

Legally binding digital signature workflows wired into your systems.

How We Work

Our approach

We map every integration point and its failure modes before writing code. A silent failure in a payment flow is a business problem, not just a bug. That map covers what happens when the other system times out, returns bad data, or goes down entirely, not just the successful response path. We build retry logic and alerting so failures surface immediately instead of silently dropping data. Every integration is documented as it's built: what's connected to what, and how errors are handled, so your team, or the next vendor, isn't reverse-engineering it later.

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Tech We Use

Tools & technologies

Protocols & Standards

REST APIs GraphQL

Tools & Platforms

Postman Zapier Node.js
FAQ

Common questions about api integrations

Can you integrate with a system that has no public API?

Sometimes, through other means: screen scraping, file-based transfer, or database-level integration. We'll assess feasibility honestly.

What happens if a third-party API goes down?

We design retry logic and failure handling up front. Your system should degrade gracefully, not silently lose data.

Do you document the integrations you build?

Yes, so your team, or the next vendor, understands what's connected to what.

Can you integrate payment and SMS gateways together, like for a donation platform?

Yes, we've built exactly this: payment, SMS, and fundraising systems working together for a nonprofit's donor platform.

Can you build middleware to keep multiple systems in sync?

Yes, when a direct point-to-point connection isn't enough, we build middleware that handles translation and sync logic between systems.

Do you support GraphQL as well as REST?

Yes, we'll recommend whichever fits the systems involved and your team's existing tooling.

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Let's talk

Ready to start your api integrations project?

Whether you need a brand-new build, a redesign of something that's already live, or a second opinion on a project another vendor left behind, our in-house engineering team scopes the work honestly, keeps you updated sprint by sprint, and stays reachable after launch instead of disappearing once the invoice is paid. Fill in the quick form and we'll reply within one business day, or book a free 30-minute architecture review if you'd rather talk it through first. No obligation, no sales pitch.

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