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NAND Solutions
Services

Integrations

Connect the systems you already run.

The Problem

Disconnected systems cost real money.

Disconnected systems cost real money in manual reconciliation, errors, and lost context. Every API call that a human makes by hand is a failure mode waiting to happen. When QuickBooks doesn't talk to your operations system, someone is spending hours bridging the gap — and introducing errors in the process.

What We Build

Integrations that handle the real world.

API integration development
QuickBooks Online sync
Stripe webhooks
Bidirectional data sync
Idempotent retry logic
Webhook management
Rate limit handling
Data transformation

HOW WE WORK

From Discovery to Production

  1. Discovery & Scoping

    We map your current systems, data flows, and pain points. Deliverable: a technical scoping document with estimated effort and risk register.

  2. Architecture & Design

    System design, database schema, API contracts, and infrastructure plan — reviewed with your team before any code is written.

  3. Build & Integrate

    Iterative delivery in 2-week cycles. You see working software continuously, not just at the end.

  4. Deploy & Support

    Production deployment with runbooks, monitoring, and a defined handoff plan. Ongoing support available as a retainer.

ENGAGEMENT MODELS

Choose Your Engagement Model

Fixed-Scope

Custom
  • Defined deliverables
  • Fixed timeline
  • Single-project engagement
  • Ongoing retainer
  • Priority support
  • Dedicated engineer
RECOMMENDED

Retainer

$4500/mo
  • Defined deliverables
  • Fixed timeline
  • Single-project engagement
  • Ongoing retainer
  • Priority support
  • Dedicated engineer

Hourly

Custom
  • Defined deliverables
  • Fixed timeline
  • Single-project engagement
  • Ongoing retainer
  • Priority support
  • Dedicated engineer

Talk to a specialist

Tell us which systems need to talk to each other. We'll design the integration.

Integration Services — API & System Integrations | NAND Solutions