SERVICE: System Integrations — APIs, CRM-ERP sync and data connectors

Are Disconnected Systems Slowing You Down?

These problems cost businesses thousands of hours and euros every year.

Manual Copy-Paste

Your team wastes hours copying data between systems — orders, customer info, invoices — introducing errors every time.

Data Inconsistencies

Different systems show different numbers. Customer records don't match. Inventory counts are off. Trust in your data is gone.

No Single Source of Truth

When three systems have three different answers, which one is right? Decision-making becomes guesswork.

Reconciliation Overhead

End-of-month reconciliation takes days instead of minutes because data from multiple systems needs manual alignment.

One Connected Business Ecosystem

We design and implement integrations that make your systems work together as one — automatically, reliably, and securely.

Seamless Data Flow Across Every System

Whether you need two systems talking to each other or a complete enterprise integration architecture, we build robust, maintainable connections that keep your data consistent and your teams productive.

  • Real-time and batch synchronization
  • Error handling and automatic retries
  • Data validation and transformation
  • Monitoring dashboards and alerting
  • OAuth 2.0 and enterprise-grade security

Integration Impact

80%
Less manual data entry
0
Data discrepancies
24/7
Automated sync
1
Single source of truth

Our Integration Services

End-to-end integration capabilities — from API design to enterprise middleware.

API Development & Design

Custom REST and GraphQL APIs with clean documentation, versioning, rate limiting, and developer-friendly design that makes integration effortless.

CRM Integration

Connect Salesforce, HubSpot, Zoho, or Pipedrive with your other business systems. Sync contacts, deals, activities, and custom objects automatically.

ERP Integration

Bridge SAP, Odoo, Microsoft Dynamics, or Exact Online with your e-commerce, warehouse, and financial systems for unified operations.

Real-Time Data Synchronization

Instant bi-directional data flow between systems using webhooks, event-driven architecture, and message queues for time-critical processes.

Legacy System Connectors

Connect older systems that lack modern APIs. We build adapters, file-based interfaces, and database connectors to bridge the gap.

iPaaS & Middleware Solutions

Integration platforms with n8n, Azure Integration Services, and custom middleware that orchestrate complex multi-system workflows.

How We Deliver Integrations

A proven methodology for reliable, maintainable integrations.

  1. 1

    System Audit

    We map your current systems, data flows, and pain points to identify integration opportunities and priorities.

  2. 2

    Architecture Design

    We design the integration architecture, define data mappings, error handling strategies, and security protocols.

  3. 3

    Build & Test

    Iterative development with sandbox testing, data validation, and edge case handling before touching production data.

  4. 4

    Migration & Go-Live

    Controlled rollout with data migration, parallel running, and validation to ensure zero data loss.

  5. 5

    Monitor & Support

    Ongoing monitoring, alerting, and maintenance to keep integrations running smoothly as your systems evolve.

Common Integration Scenarios

Real-world integration projects we deliver for businesses across industries.

CRM to ERP Order Sync

Automatically push won deals from your CRM into your ERP as sales orders — no re-keying, no delays.

E-Commerce to Warehouse

Sync online orders with warehouse management for automated picking, packing, and shipment tracking.

Payment Gateway Integration

Connect Stripe, Mollie, or PayPal with your systems for automated invoicing, reconciliation, and reporting.

HR to Payroll Connector

Sync employee data, time tracking, and leave management between HR and payroll systems automatically.

Multi-Channel Inventory Sync

Keep stock levels accurate across your website, marketplaces, and physical stores in real time.

Customer Data Unification

Merge customer data from multiple touchpoints into a single, unified profile for marketing and support.

Integration Technologies

Enterprise-grade tools and protocols for reliable, secure integrations.

REST APIs
GraphQL
n8n
Azure Integration Services
MSSQL
PostgreSQL
RabbitMQ
OAuth 2.0

Frequently Asked Questions

Common questions about our system integration services.

We integrate virtually any system with an API or data export — CRMs (Salesforce, HubSpot, Zoho), ERPs (SAP, Odoo, Microsoft Dynamics), e-commerce platforms (Shopify, WooCommerce), payment gateways (Stripe, Mollie), accounting tools (Exact, QuickBooks), and custom or legacy systems.

A straightforward two-system integration usually takes 2 to 4 weeks. More complex multi-system integrations with data transformation, error handling, and monitoring can take 6 to 12 weeks depending on the number of systems, data volume, and business rules involved.

Security is built into every integration. We implement OAuth 2.0, API key management, TLS encryption, rate limiting, IP whitelisting, and input validation. All integrations follow OWASP guidelines and GDPR requirements for data handling.

Real-time sync transfers data instantly when changes occur — ideal for order processing or inventory updates. Batch sync processes data at scheduled intervals (hourly, daily) — suitable for reporting, analytics, or non-time-critical data. We help you choose the right approach based on business needs and system capabilities.

Yes. We offer ongoing monitoring, maintenance, and support packages. This includes error alerting, performance monitoring, data validation checks, and prompt issue resolution. We also handle updates when connected systems change their APIs.

Yes, and we have shipped it: our PrestaShop case study covers a live two-way sync between a PrestaShop shop and a Netsis ERP, covering orders, stock, prices and invoices. The same pattern applies to other ERP, accounting and third-party logistics systems. Where a system publishes an API we integrate against it; where it does not, we sync at the data layer instead.

PrestaShop, WooCommerce, Shopify and custom storefronts. The platform matters less than what sits behind it: the work is nearly always keeping orders, stock and invoices consistent between the shop and the ERP, accounting or fulfilment system, without anyone retyping them.

Yes — manufacturing is where much of our integration work runs in production. We have delivered a digital traceability platform and a manufacturing process tracking system that connect production lines, quality control and inventory to the ERP, so orders, bills of materials and stock levels stay consistent between the shop floor and the office. The same patterns — real-time sync for production events, batch sync for reporting — apply to most manufacturing ERP integrations.

We map your current systems, data flows, and pain points to identify integration opportunities and priorities. Whether you need two systems talking to each other or a complete enterprise integration architecture, we build robust, maintainable connections that keep your data consistent and your teams productive.

Yes. Rui Codex is based in Belgium and serves clients across the European Union, both remotely and on-site. Being based in Belgium means we work in your timezone and under EU data-protection rules.

Delivered work

Real projects rather than scenarios - what was built, and how.

Where we work

Rui Codex is a Belgian company and works on-site with clients across Brussels, Antwerp, Ghent, Leuven and Liège, and remotely across the European Union. See all service areas.

Ready to Connect Your Business Systems?

Tell us which systems you need connected and we'll design an integration strategy tailored to your business. Free consultation, no commitment.

We typically reply within 1 business day. Your project details stay private.