Merchant services
POS Integration & Developer Services
Connect your POS to the systems you already run — accounting, ecommerce, scheduling, payroll, ERP or a custom application. We scope the connection, select supported apps or gateway tooling, and stay involved through testing.
Available integrations depend on your POS platform, processor and the third-party system's published capabilities.
Talk to a payments specialist
Tell us about your business and we'll follow up with next steps. No obligation.
What you get
App marketplace setup
Selection, installation and configuration of supported POS apps instead of trial-and-error installs.
Accounting & ecommerce sync
Map sales, tax, tips and payouts into your bookkeeping platform or online store catalog.
Gateway & API projects
Semi-integrated terminal and hosted-checkout work for teams building their own front end.
Multi-location rollouts
Consistent menus, pricing, users and reporting structure across every store you operate.
Data migration
Move item catalogs, customers and gift card balances from an existing system where the data can be exported.
Test plan & signoff
Documented test transactions and a written signoff before the integration handles live volume.
Included in the setup
- Discovery call to document current systems and required data flow
- Compatibility review against your POS platform and processor
- Installation and configuration of supported apps or gateway credentials
- Sandbox or test-mode transactions before go-live
- Reference documentation for your team
- Post-launch support window with a named contact
How the process works
- 1
Scope
We map which systems must talk to each other, what data has to move, and who owns each side.
- 2
Build and test
Supported apps are configured or API credentials issued, then we run test transactions end to end.
- 3
Launch and document
We move the integration to live, hand over documentation, and remain the point of contact for issues.
What actually happens during a POS integration
Most integration requests start with a business running two or three systems that don't talk to each other: a POS ringing sales, a bookkeeping platform where someone re-types the daily total, and maybe a separate online store or booking calendar with its own customer list. The work is mapping which fields need to move — sales, tax, tips, refunds, item-level detail, customer records — and in which direction, then finding the supported connector or API that moves them without a developer rebuilding it from scratch.
Where a certified app exists in your POS platform's marketplace, the project is mostly configuration: install, authenticate, map accounts or categories, and run a parallel day of transactions to confirm the numbers land in the right buckets. Where no off-the-shelf app exists — a custom in-house system, a niche booking tool, a legacy database — the project becomes a scoped API or webhook build, usually working with your developer or an approved technology partner rather than starting from a blank page.
Semi-integrated and gateway projects follow a related but distinct path: instead of syncing two back-office systems, you're connecting a payment terminal or hosted checkout to software you or your team built, so that card data flows through a certified, PCI-scoped path while your application controls the order and UI.
Who needs this versus who doesn't
Multi-location retailers and restaurant groups typically need integration work to keep menus, pricing, users and reporting consistent across every store, and to feed one clean number into accounting instead of reconciling five separate exports by hand. Businesses opening an online storefront alongside a physical counter usually need catalog and payout sync so online and in-store sales report together rather than as two disconnected businesses.
A single-location retailer using only the built-in reporting their POS already provides typically doesn't need a custom project — the native dashboard covers it. The signal that integration work is worth the investment is usually a recurring manual task: someone re-entering the same numbers, reconciling two systems by hand at month-end, or a spreadsheet bridging systems that should talk directly.
What we review before scoping a project
Before recommending an integration, we confirm which systems are actually in play, whether they publish a supported API or app marketplace listing, what data can legally and technically be exported from a legacy platform, and who on your side owns testing and signoff. The most common pitfall is skipping a documented test plan and discovering mismatched tax or tip mapping after a system has already been running live for weeks — which is why every project here ends with sandbox testing and a written signoff before it touches production volume.
Three common integration paths
Most projects fall into one of these categories; the scoping call determines which applies to you.
| Path | Typical use case | What's involved |
|---|---|---|
| Marketplace app install | Accounting sync, loyalty, online ordering on a supported POS platform | Configuration and account mapping, usually days not weeks |
| Custom API / webhook project | Custom in-house software, niche booking or ERP tools | Scoped developer project with your team or a technology partner |
| Gateway / semi-integrated build | Custom checkout, kiosk or app controlling its own UI | Certified terminal or hosted-checkout connection, PCI scope kept on the payment path |
Frequently asked questions
Which systems can you connect to a POS?
Common projects include accounting platforms, online stores, scheduling and reservation tools, payroll, inventory systems and custom in-house applications. Availability depends on your POS platform and the third-party system's published integration options.
Do you support custom or semi-integrated payments?
Yes. For teams building their own checkout, we work with gateway and semi-integrated terminal options so card data stays within the payments environment and your application handles the order flow.
Can you migrate data from my old POS?
Where your current system can export items, customers or balances, we help map and import that data. Some platforms limit what can be exported, so we confirm feasibility during scoping.
How long does an integration take?
Timing depends on the systems involved, how clean the existing data is, and third-party review cycles. We give you a scoped plan with milestones rather than a blanket estimate.
Do I need my own developer for an integration?
Not for a certified marketplace app — those are usually configuration only. Custom API or webhook projects go faster with a developer involved, whether that's someone on your team or a partner we bring in to scope the build.
What's the most common reason an integration goes wrong?
Skipping documented testing before go-live. Mismatched tax, tip or category mapping is easy to miss until a report doesn't reconcile weeks later, which is why every project here includes a test plan and written signoff before it handles live volume.
Can you connect a POS to a system that isn't well known?
If the system publishes any API, webhook or export function, we can usually scope a connection. Some legacy or closed platforms limit what can be exported, so we confirm feasibility during the discovery call before quoting the project.