Software engineering / API integrations
Systems that
connect.
We connect your ERP, CRM, payment gateways and third-party APIs with robust integrations. Data stops living in islands: it flows between systems on its own — correct and in real time — with no spreadsheets to export and nothing to key in twice.
What integration is
Letting your systems
share what they know.
Integrating means connecting two or more systems so they share data and actionsautomatically. When you create a customer in the CRM, that customer shows up in the ERP; when an order comes into the store, inventory updates and the invoice is generated on its own. Instead of people moving information between screens, the systems talk to each other.
That conversation happens through APIs (application programming interfaces): contracts that define what one system can ask for and what the other returns. We work with the standards that run the industry — REST and GraphQL to read and write data, webhooks to react to events the moment they happen — and with the authentication protocols (OAuth 2.0, API keys, tokens) that keep the connection secure.
Not every integration is built the same way. When a standard connector exists and the case is simple, an iPaaS platform (integration platform as a service) solves it fast and cheaply. When the flow is critical, carries bespoke logic or moves high volume, acustom integration over the API gives full control over errors, retries and performance. We choose based on the case — and often combine both. It is part of oursoftware engineering practice.
Problems it solves
What keeping systems
apart costs you.
Data islands
Every application keeps its own version of the truth. The customer in the CRM is not the same as the one in the ERP, and no one is sure which one is right.
Double (and triple) entry
The same data is keyed in by hand in three places. Beyond the wasted time, each copy is another chance to mistype an amount, a reference or an email.
Out-of-sync data
A price changes in one system but not in the others. When applications do not talk to each other, information goes stale silently and decisions are made on old data.
Manual work between apps
Export a CSV from here, import it there, review, repeat. Bridge tasks that eat hours every week and that no one wants to do.
Reports that do not match
Sales quotes one number, finance quotes another. Without a single connected source of data, every report starts from a different snapshot of reality.
The limits of off-the-shelf
The out-of-the-box connector covers 80% of what you need and falls short exactly on your special case. Without access to the logic, there is no way to stretch it.
What we integrate
We connect with what
you already use.
We do not replace your tools: we make them work together. These are the systems we integrate every day:
- ERP (SAP, Business Central, Holded…)
- CRM (Salesforce, HubSpot, Pipedrive…)
- Ecommerce (Shopify, WooCommerce, Magento…)
- Payment gateways (Stripe, Redsys, PayPal…)
- Marketing and email
- Logistics, shipping and warehouse
- SQL and NoSQL databases
- Third-party APIs and in-house services
Use cases by department
A connection for
every team.
| Department | Integration | Result |
|---|---|---|
| Sales | CRM ↔ ERP (customers and orders) | A single customer record; reps see stock, pricing and payment status without leaving the CRM. |
| Finance | Payment gateway ↔ invoicing | Every charge generates its invoice and its ledger entry; reconciliation with no manual keying. |
| Operations / Logistics | Ecommerce ↔ warehouse ↔ carrier | Orders, stock and shipments in sync; the customer sees real tracking, not an estimate. |
| Marketing | CRM ↔ email platform | Segments always up to date; no more exporting lists by hand for every campaign. |
| Management / BI | Every system ↔ data warehouse | A dashboard with numbers that add up, fed automatically. |
In one line
Your systems already talk; we make them understand each other.
Benefits and results
What you gain by
connecting it all.
One reliable set of data
A single source of truth. Data is entered once and travels, correct, to every system that needs it.
Fewer errors
With no copy-paste between screens, duplicates, mistyped amounts and mismatches disappear.
Real-time information
A change in one system shows up in the others instantly, not in the next nightly dump.
End-to-end processes
Order, payment, invoice and shipment stop being islands and become a single continuous flow.
Scalability
An integrated flow that handles 100 orders handles 10,000 just as well, without adding manual hours.
Less reliance on key people
Knowledge stops living in someone’s head (or spreadsheet): it lives in a documented system.
How we build it reliably
Integrations that hold up
in the real world.
An integration is not “connect and forget”. APIs change, services go down and limits exist. We design for that real world with the right techniques:
If something fails, the system retries, alerts and loses no data. That is the difference between a toy integration and one you can put into production.
The CPPA method
From scattered systems to
one connected whole.
Map systems and data
We inventory the systems in play, the APIs they expose, which data must travel and in which direction. For each field we define the source of truth, so there are never two “official” versions.
Design the integration
We decide the pattern (real time vs. batch, custom vs. iPaaS), the field mapping between systems, the authentication model and — crucially — exactly what happens when something fails.
Build and test
We develop against each API’s sandbox, with automated tests, error handling, retries and idempotency. Nothing touches production before it is validated with realistic test data.
Go live and monitor
We roll out in phases, with monitoring and alerts from day one. We measure, tune, and leave the integration documented and versioned, ready to grow.
Example integrations
What it looks like
in practice.
ERP ↔ ecommerce
- Order placed in the store
- Order created in the ERP
- Stock decremented
- Availability updated on the website
- Delivery note generated
CRM ↔ marketing
- New contact in the CRM
- Synced to the email platform
- Segment assigned
- Welcome sequence sent
- Activity logged back into the CRM
Payment gateway ↔ invoicing
- Charge confirmed (webhook)
- Amount verified
- Invoice generated
- Ledger entry posted
- Invoice emailed to the customer
Inventory sync
- Stock change in the warehouse
- Event published
- Updated across store and marketplaces
- Alert if it drops below threshold
- Movement logged
Risks and mitigation
What can go wrong,
and how we prevent it.
Integrating well is as much about connecting systems as about planning for what happens when one of them stops responding. These are the real risks and how we mitigate them:
APIs change
A provider updates its API and your integration stops working. Mitigation: we version the contracts, write automated tests and watch for deprecation notices.
Outages and timeouts
No service is available 100% of the time. Mitigation: retries with backoff and queues that hold the work until the service is back. Nothing is lost.
Security and access
An integration moves sensitive data between systems. Mitigation: OAuth 2.0, least-privilege access, secrets kept in a vault, and encryption in transit and at rest.
Rate limits
APIs cap how many calls they accept per minute. Mitigation: rate limiting on our side, call batching and batch processing where it makes sense.
Duplicate data
A poorly designed retry can create the same invoice twice. Mitigation: idempotency, so every operation can be repeated without side effects.
The “black box” integration
If no one knows what it does or why it failed, maintaining it is impossible. Mitigation: monitoring, logs with traceability, and documentation from the design stage.
Frequently asked questions
Which systems can be integrated?
Custom integration or an iPaaS platform?
What happens if an API fails or goes down?
Is it secure?
Does it work in real time?
How long does it take?
Related services
Keep exploring.
Custom software
When no off-the-shelf tool fits, we build the system your operation needs, with the integrations built in from the start.
See →
Web applications
A tailored web application that centralises your processes and talks to the rest of your systems from day one.
See →
Enterprise software
When the integration is part of a larger corporate system, with several departments and many users, we move into enterprise-software territory.
See →Which systems do you need to connect?
Request a proposal →Want to see how we think about a system connected end to end? Read ourCPPA X-RAY on 100 Montaditos.