API integration and custom platform development
Systems that don’t talk to each other: your store, website, app and back office.
In short
Lintel builds API integrations that connect your Shopify store, website or app to the systems your business already runs on: ERP, inventory, accounting, CRM, shipping and marketing tools. We replace manual exports and copy-paste steps with automated, monitored flows that stay reliable as volume grows.
Who it is for
Businesses where people move data between systems by hand: orders re-typed into an ERP, stock levels updated from a spreadsheet, customer records that disagree between the store and the CRM. When two systems need to agree, an integration usually costs less than fixing the errors by hand.
What we build
- Order, inventory and customer syncs between Shopify and an ERP, warehouse, POS or accounting system.
- Webhook-driven flows that react to events as they happen instead of polling on a schedule.
- Middleware and custom APIs when two systems have no direct connector, or the connector does not fit your process.
- Integrations for websites and apps: forms, portals and mobile apps that read and write the same data as your store. See custom software development.
- Replacements for fragile no-code chains that have outgrown their limits.
How we build integrations
- Map the data first: which system owns each field, what happens on conflicts and what must never be overwritten.
- Event-driven where the platform allows it: Shopify sends webhooks for changes such as new orders, so a flow can react without constant polling.
- Safe to run twice: every handler is written so a repeated or delayed delivery cannot create duplicates.
- Visible failures: logging and alerts, so a stopped sync is noticed in minutes, not at month-end.
- Kept current: Shopify releases API versions on a regular schedule, and integrations are planned for those updates.
Platforms and systems
We work with REST and GraphQL APIs, webhooks, file-based exchanges when a system offers nothing else, and Shopify’s Admin and Storefront APIs. For Shopify-specific work, see Shopify development and custom Shopify apps.
How an enquiry works
- Send a short briefTell us about the store and what isn’t working.
- We review itUsually within 24 hours.
- Scope and pricingWe discuss what the work involves and what it costs.
- Go ahead if there’s a fitThe project starts once scope and price are agreed.

Gencer KarakayaFounder & Shopify Engineer
Every brief is reviewed by the founder.
Questions
- Do you use existing connectors or build custom integrations?
- We start with the connector if one exists and fits your process. We build a custom integration when it doesn’t, or when the data rules are specific to your business.
- What happens when an integration fails?
- We design for it: retries, logging and alerts, and handlers that can safely process the same event twice, so a failure is visible and recoverable.
- Can you integrate systems that are not Shopify?
- Yes. Websites, web applications, mobile apps and back-office systems can be connected through their APIs, whether or not a store is involved.