Integration Engineering
Connect your business systems so data flows automatically between your ERP, accounting software, e-commerce platform, payment gateway, and third-party tools — without manual exports and imports.
The Problem
Sales data sits in your order management tool. Inventory lives in the warehouse system. Accounting is in a separate platform. None of them are connected, so no single view of your business is ever accurate without someone manually pulling it together.
When systems do not integrate, people become the integration layer. Someone exports a report from one system and types the numbers into another. That work is slow, expensive, and introduces errors that compound over time.
Manual data transfer means manual mistakes — transposed figures, missed records, outdated balances. By the time a discrepancy is noticed, tracing it back to the source takes hours and reconciliation becomes a regular burden.
A business adds a new tool — a CRM, a field sales app, a new payment gateway — and discovers there is no way to connect it to what already exists. Each system becomes another island, adding to the manual work rather than reducing it.
Payments arrive through a gateway. The finance team reconciles them manually against sales records. Any mismatch requires investigation. A direct integration between your payment gateway and your ERP or accounting system eliminates most of that work.
When data moves in daily or weekly batches — or not at all — your reports are always behind. Decisions get made on yesterday's numbers, not today's, and exceptions go unnoticed until they become real problems.
What We Build
From payment gateways to legacy system connectors, we build the data bridges your business operations depend on.
Capabilities
Building an integration is more than calling an API. Reliability, error handling, and observability are what separate a working integration from one that creates problems.
Design and develop integrations against documented REST APIs — handling authentication, request/response formatting, pagination, and error codes.
Configure webhook endpoints that receive and process events from external services in real time, with signature verification and idempotency handling.
Translate data between incompatible formats — different field names, data types, nested structures — so each system receives exactly what it expects.
Build integrations that handle network failures, API timeouts, and service outages gracefully — with retries, queuing, and failure alerts.
Implement OAuth 2.0 flows, API key management, JWT authentication, and token refresh handling for secure connections to external services.
Respect API rate limits through request throttling, backoff strategies, and batch request design — so integrations never get blocked by upstream services.
Set up cron-driven sync jobs that pull or push data on a schedule — useful where real-time sync is unnecessary or where the API does not support webhooks.
Connect systems via message queues and event streams so that actions in one system immediately trigger the right response in another.
Write tests for integration logic and set up monitoring so you know when a sync fails, stalls, or produces unexpected results.
Document every integration: what flows, when, in which direction, what triggers it, and what to check when something looks wrong.
Use Cases
Distribution companies that run an ERP for operations but use separate accounting software end up with staff manually entering journal entries from one system into the other. We build integrations that post transactions to the accounting system automatically when the ERP records a sale, purchase, or payment — removing an entire category of manual work.
E-commerce businesses often manage orders in their store platform, inventory in a separate system, and payments through a gateway — with no automatic connection between them. We sync orders, stock levels, and payment status so fulfilment, inventory, and finance are always looking at the same data.
Operations software frequently needs to notify customers, field staff, or managers when something happens — a delivery dispatched, a payment received, an order status updated. We connect SMS providers, email services, and push notification platforms into your existing software.
Some businesses need to pull data from or submit data to regulatory or industry APIs — product registries, customs systems, trade databases. We work through the API documentation and build the connector so your system exchanges data correctly.
Web and mobile applications need a payment flow that initiates the transaction, handles the gateway redirect or SDK call, processes the callback, verifies the payment, and records the result. We handle the full payment integration cycle including reconciliation with your order and accounting records.
Organisations that hold data across multiple systems often want a unified view — sales from one system, costs from another, logistics from a third — without manually compiling reports. We build pipelines that pull and normalise data from each source into a reporting layer.
Technology
We use production-proven tools to build integration services that hold up under real business conditions.
NestJS
Integration service layer
Laravel
Webhook & API connectors
REST APIs
Primary integration protocol
Webhooks
Real-time event handling
PostgreSQL
Sync state & audit logs
Docker
Isolated service deployment
Cron Jobs
Scheduled batch sync
Message Queues
Reliable async delivery
How We Work
A structured approach that keeps projects on track without unnecessary ceremony.
We learn how your business operates, what the current pain points are, and what success looks like. No assumptions.
Define the technical scope, system architecture, data model, and integration touchpoints before writing a line of code.
Design interfaces that your actual users — operators, managers, field staff — can navigate without training.
Iterative builds with regular check-ins. You see working software early, not just status reports.
Functional, integration, and edge-case testing. We fix issues before they reach your users.
Production deployment with proper environment configuration, data migration support, and go-live assistance.
Post-launch monitoring, bug fixing, and feature iterations as your operations evolve.
Why Upotto
Upotto ERP connects with accounting software, payment gateways, and logistics systems as part of its standard feature set. We've built and maintained these integrations for live distribution businesses — so our integration work comes from production experience, not theory.
Authentication setup, data mapping, error handling, retry logic, monitoring — we cover the entire integration, not just the happy path. A completed integration includes all the machinery that makes it reliable over time, not just the parts that work when everything goes right.
We write integration code that fails gracefully. When an external service is unavailable, requests queue and retry rather than drop silently. When a sync falls behind, your team gets alerted before the discrepancy becomes a real problem downstream.
We document every integration we build: what data flows, in which direction, what triggers the sync, and what to check when something looks wrong. Your team should understand your integrations without needing to come back to us each time.
Related Services
ERP systems that are integration-ready by design — built to connect with your accounting, payment, and logistics tools.
Explore serviceBackend systems and APIs that are the integration point between your software and external services.
Explore serviceWhen integration alone is not enough and you need a system built to connect everything.
Explore serviceFAQ
Tell us which systems you need to integrate and what data needs to flow between them. We will review your setup and explain what the integration work involves.
