Ecommerce integration with POS
Your website or online store reads items, prices, and stock from the POS, and sends orders back.
The Problem
When Online Orders and the Till Live in Different Worlds
POS integration problems show up on the busiest nights. The website sells a dish the kitchen ran out of, and someone retypes delivery orders into the till by hand.
01 · Retyping
Staff retype online orders into the till by hand.
Online orders post straight into the POS as tickets, with modifiers attached.
02 · Sold out
The website sells dishes the kitchen has run out of.
Sold-out items and stock changes reach the website as soon as staff mark them.
03 · Tablets
Each delivery app needs its own tablet and menu.
Delivery menus and orders run through the POS where the app supports it.
04 · Books
POS sales get exported and posted to the books by hand.
Daily sales, taxes, and fees post to QuickBooks or Xero automatically.
A guest orders online at 7 p.m., and a server retypes the ticket into the POS while the dining room waits. The website still lists the special you ran out of at six. Delivery tablets crowd the counter, one per app, each with its own menu prices. In the shop next door, a barcode scans at the till, but the website shows a different price. At month-end, someone exports POS sales to a spreadsheet so the bookkeeper can post them by hand.
We start by treating the POS as the source of truth for items, prices, and in-person sales. Your website, online ordering, delivery apps, and accounting read from it, and online orders flow back into it like any other ticket. Card payments stay in the POS vendor's certified terminal flow, which keeps card data away from your website. The kitchen and the counter work one queue instead of three tablets.
One item list everywhere
Items, prices, modifiers, and sold-out dishes flow from the POS to every channel you sell through.
Online orders in the queue
Web and delivery orders print in the kitchen or shop like any in-person ticket.
Card data stays out
Payments run in the POS vendor's certified terminal flow, not through your website.
Our POS Integration Services Process
From POS Review to Live Orders in Five Steps
You see what your POS already connects to, approve the item and order map, and watch test orders reach the kitchen or till before launch.
We check your POS edition, its integration marketplace, its API access, and the channels you sell through. You get a written plan: which links already exist, which need custom work, and what each one costs.
What's Included
What Our POS System Integration Covers
Every project is scoped to your POS and your channels. Most combine these six parts, from the website link to daily sales posted in your books.
Compare Options
DeveloperLook vs POS Marketplace App vs Manual Workaround
Marketplace apps are quick for common links, and manual workarounds cost nothing upfront. Here's where each holds up as locations, channels, and devices multiply.
| Feature | DeveloperLookBest fit | Marketplace app | Manual workaround |
|---|---|---|---|
| Planning | Item and order map first | Install and configure | No planning needed |
| Online orders | Posted to the POS as tickets | If the app supports it | Retyped by staff |
| Sold-out items | Synced to every channel | Varies by app | Updated by hand |
| Card payments | POS-certified terminal flow | POS-certified terminal flow | Separate card reader |
| Accounting | Daily sales posted automatically | Summary exports | Spreadsheet at month-end |
| Speed to start | 1 to 5 weeks | Same day for listed apps | Starts immediately |
| Ownership | Your code and accounts | Vendor subscription | Staff time |
| Cost | Fixed price from $850 | Monthly app fees | No upfront cost |
DeveloperLook
Marketplace app
- Planning
- DeveloperLook: Item and order map firstMarketplace app: Install and configure
- Online orders
- DeveloperLook: Posted to the POS as ticketsMarketplace app: If the app supports it
- Sold-out items
- DeveloperLook: Synced to every channelMarketplace app: Varies by app
- Card payments
- DeveloperLook: POS-certified terminal flowMarketplace app: POS-certified terminal flow
- Accounting
- DeveloperLook: Daily sales posted automaticallyMarketplace app: Summary exports
- Speed to start
- DeveloperLook: 1 to 5 weeksMarketplace app: Same day for listed apps
- Ownership
- DeveloperLook: Your code and accountsMarketplace app: Vendor subscription
- Cost
- DeveloperLook: Fixed price from $850Marketplace app: Monthly app fees
Projects We've Built
Restaurant and Retail Projects We Have Built
Restaurant sites, food ordering apps, and a fashion store app. They aren't POS integrations, but menus, orders, and stock run through every one of them.
Nicefin Restaurant Website and Dashboard
- Food & Beverage
- Dashboard
- Booking System
Sevanor Food Delivery App and Restaurant Dashboard
- Food & Beverage
- Food Delivery
- Dashboard
Coffee Break Specialty Coffee Mobile App
- Food & Beverage
- E-commerce
- Food Delivery
Unicom Fashion Ecommerce App and Admin Dashboard
- Fashion
- Dashboard
- E-commerce
What Our Clients Say
What Clients Say After Launch
Feedback from teams we have built restaurant, retail, and ordering software for.
We had a pretty specific idea of what we wanted our website to become, but I wasn’t sure how easily we could explain all of it to a development team. There were quite a few moving parts, and we were working toward a deadline, so I expected a few things to get lost along the way. That never really happened. They understood what we were trying to achieve, kept us updated throughout the process, and got everything ready within the agreed timeline. The final site feels much easier to navigate, works beautifully on mobile, and is noticeably smoother for our customers. It was a huge relief seeing the original idea actually turn into the website we had in mind.
The mobile experience is probably my favourite part of the new site. We had spent a lot of time making sure the desktop version looked right, and the team kept pushing us to think about how everything would actually feel on a phone too. They were right. The navigation is clean, the interactions feel natural, and everything we’ve tested so far works exactly as it should. They also went through the links, forms, integrations, and other details more than once before launch, which I really appreciated. And even after going live, we could still reach out when something came up. The whole process felt friendly, organised, and surprisingly straightforward.
What I appreciate most is that the website is actually easy for us to manage now. We can update content ourselves instead of sending a developer a message every time we need to change something small. They also paid attention to the technical SEO side, which mattered to us because we didn’t want a new website to create problems for the traffic we already had. I’ve probably asked more questions than I should have since launch, but every question has been handled patiently and without any fuss. The team is easy to work with, they explain things clearly, and when we need something changed, they focus on getting it done rather than making the process complicated.
1,250+
Projects shipped
10+
Years of experience
Top 3%
Upwork Top Rated Plus
5 stars
Average review score
Want results like these?
Tell us what you are building. You get a reply within 24 hours on business days, then a written estimate.
Work Culture
Why Restaurants and Retailers Trust Us With Their POS
A POS integration is judged during a dinner rush or a Saturday sale. These habits keep orders flowing, prices right, and card data where it belongs.
Marketplace apps checked first
We look at your POS vendor's own marketplace before proposing custom code. If a listed app already covers it, we'll tell you before we quote.
Card data kept out of scope
Payments stay in the POS vendor's certified terminals, so card numbers don't touch your website. That keeps your PCI scope as small as the setup allows.
Launches on quiet shifts
We switch on new integrations before a slow service or trading day, not on a Friday night. Your staff learn the new flow without a full room watching.
Menus mapped item by item
Every item, modifier, and tax rule is matched across channels before the first sync. Mismatched modifiers cause most of the wrong tickets we're called to fix.
Locations kept separate
Each location keeps its own menu, prices, and stock in the integration. A dish that sells out downtown doesn't vanish from the uptown ordering page.
Your accounts, your code
API keys, app subscriptions, and custom code sit in your business's name. You can switch providers without rebuilding your ordering setup.
Overview
How does POS integration work for restaurants and retailers?
DeveloperLook handles POS integration for restaurants and independent retailers on Square, Toast, Clover, and Lightspeed. We connect the POS to your website, online ordering, delivery apps, and QuickBooks or Xero, with card payments kept in the vendor's certified flow. Projects start at $850, run 3 to 8 weeks, and the integration code is yours.
DEVELOPERLOOK
Project facts · POS Integration Services
- Service
- POS integration services (website link, custom POS syncs, multi-location hubs)
- Typical timeline
- 3 to 4 weeks for listed links, 5 to 8 weeks for custom work
- Platforms
- Square, Toast, Clover, Lightspeed, and delivery apps
- Built with
- POS vendor APIs, webhooks, Node.js, and PostgreSQL
- Experience
- 10+ years of development experience and 1,250+ shipped projects
- Post-launch support
- 30, 60, or 90 days, depending on plan
- Communication
- Calls in US, UK, and AU business hours
- Starting price
- From $850 USD, fixed scope after a free POS review
Reviewed 7 Oct 2026 by Saimul Islam
Good fit
Restaurants taking online orders
Your online orders print on a separate tablet, and staff retype them into Toast or Square before the kitchen sees them.
Independent retailers selling online
Your shop's till and website price the same item differently, and online customers buy stock that sold in-store this morning.
Grocers and convenience stores
You want your POS catalog feeding Instacart or DoorDash, so delivery customers see real prices and in-stock items.
Owners closing the books by hand
Your bookkeeper exports POS sales every month and posts them to QuickBooks by hand, tips and fees included.
Restaurant groups with several locations
You run several locations on one POS and need an integrated POS system that keeps each site's menu, stock, and reports separate.
Not a fit
Running Shopify POS
Your shop runs Shopify POS or wants to move to it. Our Shopify POS Integration page covers rollouts, offline payments, and stock by location.
Shopify store with Square
Your online store is on Shopify and the till is Square, Clover, or Lightspeed. Our Shopify Square, Clover and Lightspeed Sync page covers that pairing.
POS not chosen yet
You're still choosing a POS and want a vendor comparison. Pick the POS first, since every integration plan depends on its API and marketplace.
Budget under $850
Your budget is under $850 and your POS vendor already offers an online ordering add-on. Turn that on first, and we'll say so before we quote.
Not sure we're the right fit?
Book a free call or message us. We'll tell you honestly whether we're the right team.
Pricing
Transparent Starting Prices for POS Integration Services
These are starting points in USD. Your final price depends on locations, channels, and whether a listed integration exists, and you get a fixed proposal after a free POS review.
For one location connecting its POS to the website or online ordering.
$850one-time, USD
- Free POS and menu review
- Website or online ordering linked to the POS
- Items, prices, and sold-out items synced
- Online orders sent to the POS as tickets
- Test orders on your real devices
- 30 days of post-launch support
Recommended
For businesses connecting the POS API to accounting, ecommerce, or apps without a listed integration.
$2,450one-time, USD
- Everything in POS to Website Link
- Custom sync on the POS vendor's API
- Daily sales posted to QuickBooks or Xero
- Payments kept in the certified terminal flow
- Retry queue and failed-order alerts
- 60 days of post-launch support
For groups running several locations, delivery apps, and in-store devices from one POS.
$5,100one-time, USD
- Everything in Custom POS Integration
- Up to 5 locations mapped
- Delivery app menus and orders connected
- Kiosks, signage, or feedback devices linked
- Sales dashboard across locations
- 90 days of post-launch support
For Agencies
White-Label POS Integration Services for Agencies
You own the client relationship. We supply the POS engineering: website and ordering links, custom syncs on the vendor's API, and accounting posts. Fixed quotes protect your margin, and launches are timed around your client's quiet shifts.
How the partnership works
White label: your client only ever sees your brand
- Your client
- You, the agency
- DeveloperLook
Share the locations
Send the POS, the channels, and the locations your client runs.
- Client needs
- You share the details
- Details received
We map the menu
You get an item and order map, a fixed quote, and a launch date.
- Scope and plan
- Proposal to resell
- Your quoteYOUR LOGO
Quiet-shift handoff
Tested orders and a staff guide delivered under your agency's brand.
- Done by our team
- Your brand on it
- Handed to your clientDone
Partner with DeveloperLookDelivered under your brand
Stay client-facing
Your agency's name on every handover, and no client contact unless you ask.
Service-safe launches
Go-lives timed around service, with test orders on real devices.
Fixed-price quotes
Quotes you can resell, with each location and channel priced upfront.
POS API experience
Engineers who work with POS vendor APIs, webhooks, and marketplace apps.
The Right Technology for Your Project
Technology Stack
We use each POS vendor's own APIs, webhooks, and marketplace apps first, then custom code for the links they leave open.
- Square
- Toast
- Clover
- Lightspeed
- DoorDash
- Uber Eats
- Instacart
WooCommerce
QuickBooks
Xero
Google Sheets
Power BI
Node.js
PostgreSQL
Docker
AWS
FAQ
Frequently Asked Questions
Straight answers on costs, websites and ecommerce, payments, delivery apps, scanners, and Toast with QuickBooks.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
POS integration services with DeveloperLook start at $850 for one location linking its POS to your website or online ordering. Online orders come back into the POS as tickets. Custom syncs on the POS vendor's API start at $2,450, and multi-location hubs with delivery apps and in-store devices start at $5,100. POS and app subscriptions stay with their vendors.
A listed integration takes 3 to 4 weeks, including test orders on your devices. Custom POS syncs and multi-location projects take 5 to 8 weeks. Menu cleanup usually takes longest, because every item and modifier must match across the POS and each channel before orders flow.
POS integration is connecting your point of sale system to the other places you sell and account, so items, orders, and sales match everywhere. Typical links are your website, online ordering, delivery apps, scanners, and accounting. The POS stays the source of truth, and every other channel reads from it.
Connect the website to the POS through the vendor's own online ordering link, a marketplace app, or the POS API. The website reads items, prices, and stock from the POS, and online orders post back as tickets. We test the whole loop with real orders before your first live service.
Most POS systems integrate with ecommerce through the vendor's own online store link, a POS integration platform, or a custom sync on the POS API. The key decision is which system owns each field, usually the POS for price and stock. We set that rule first, so the two channels stop overwriting each other.
Keep card payments in the POS vendor's own certified terminals and payment service rather than building a separate card flow. In a semi-integrated setup, the terminal handles card data and sends only the result to the POS, which reduces PCI scope. Online payments go through the vendor's checkout or a gateway it supports.
Yes, in most cases. A kiosk or tablet survey can read the order or receipt number from the POS API, so feedback ties to a real visit, server, and location. Where the POS has no open API, a QR code on the receipt does the same job with less setup.
Most retail POS scanners act like a keyboard: the scan types the barcode into the POS, which looks up the matching item. The real integration work is in the catalog, so every product has one barcode linked to the same SKU in the POS and on your website. We clean up duplicate and missing barcodes first.
Several POS systems do. Instacart's documentation lists catalog integrations with POS systems such as Clover, Square, Lightspeed, Heartland, and Revel, and DoorDash integrates directly with Toast, Square, and Clover. We check your POS against each delivery app's list and fill any gaps with a catalog feed.
Yes, in more than one way. Toast's built-in QuickBooks Online sync is for Toast Retail, while restaurants usually connect through xtraCHEF by Toast or partners such as Restaurant365 and MarginEdge. We help you pick the route, then map sales, taxes, tips, and fees to your chart of accounts.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
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