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Integrations and API

An ERP that needs to receive orders, a carrier that needs to generate labels, a marketplace that needs to mirror the same stock: these exchanges run through APIs, and I build or adapt the connectors linking them to your shop.

Describe my issue Chat on WhatsApp

Commonly connected systems

  • ERP and business management

    Syncing orders, stock and prices between the shop and the management system.

  • Carriers and logistics

    Label generation, parcel tracking, carrier selection at checkout.

  • Marketplaces

    Publishing the catalogue and pulling in orders from one or more marketplaces.

  • CRM and marketing tools

    Sending customer and order data to a CRM or an email tool.

  • Accounting and invoicing

    Automatically sending sales data to accounting software, to avoid manual re-entry.

How I approach an integration

An integration starts with reading the external system's technical documentation: data format, authentication, call rate limits. Some systems expose a clean, documented API; others rely on file or webhook exchanges. The connector adapts to what actually exists, not to what would be ideal in theory.

One point that's often underestimated: error handling. An API call that fails silently can desynchronise stock for days without anyone noticing. I set up logging and, where relevant, an alert for repeated failures.

Building an integration

  1. Reviewing the technical documentation

    Reading the external system's API or exchange format, and checking the access available.

  2. Defining the direction of exchange

    Who sends what, how often, and how data conflicts are resolved when the two systems disagree.

  3. Building the connector

    Writing the code that links the two systems, handling errors and incomplete data.

  4. Testing on a separate environment

    Checking behaviour with real data before connecting the systems in production.

  • 2019 e-commerce developer since
  • 3 platforms: PrestaShop, WooCommerce, Shopify
  • 3 working languages: FR, EN, TR
  • 100 % direct contact with the developer

No middleman: the person who replies is the one who works on the code.

Describe your need in one minute

A few targeted questions so I can reply with an estimate rather than another questionnaire.

outil
api
sens
frequence (facultatif)
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Frequently asked questions

Does the external system need to already have an API?
It's simpler if it does. If the system only offers file exports or no programmable interface, an integration is still possible but with different constraints, which I explain before starting.
What happens if the third-party system changes its API?
A connector can break if the external system changes its behaviour without warning. That risk exists for any integration; regular monitoring catches it quickly rather than discovering it through a stock issue.
How long does setting up an integration take?
It depends on the quality of the external system's documentation and the number of edge cases to handle. An estimate always follows the documentation review, never before.
Do you handle authentication and security for the exchanges?
Yes, setting up API keys, access tokens and encryption for the exchanges is part of the integration work.
Can several systems be synced at the same time?
Yes, but each extra system adds a possible point of failure and a priority rule to define when two sources disagree. I factor that into the pricing rather than discover it along the way.