API & Software Integration

API & Software Integration Services

Streamline operations and boost efficiency with custom software and API integration services that connect your favourite business tools and platforms.

Business systems integration showing connected platforms and data flow

What are software integration services?

Software integration services connect separate business systems so that data moves between them automatically instead of being copied by hand. Synergi Tech delivers this as a build and support service: we map the process you want to automate, connect the systems through their APIs, transform the data so each platform receives it in the format it expects, and monitor the connection once it is live.

A typical engagement covers discovery and data mapping, authentication setup using OAuth 2.0 or API keys, building the integration with webhooks for real time events or scheduled synchronisation for batch data, handling retries and failures so nothing is silently lost, and logging every transaction for audit. Where a platform has no usable API, we work with file based transfer, database level integration or middleware instead.

We integrate the systems UK businesses actually run on: Xero, Sage and QuickBooks for finance, Stripe and GoCardless for payments, HubSpot, Salesforce and Zoho for CRM, e-commerce and warehouse platforms, and bespoke in-house applications. Integrations are built to handle personal data in line with UK GDPR, with data minimised, transferred over TLS and retained only as long as the process requires.

Integration Capabilities

Powerful features to connect and automate your business processes

Seamless Connections

Connect disparate systems and applications to work together harmoniously.

Process Automation

Automate repetitive tasks and workflows to increase efficiency and reduce errors.

Real-time Sync

Keep your data synchronised across all platforms in real-time.

Secure Transfers

Enterprise-grade security for all data transfers and API communications.

Analytics & Reporting

Gain insights from integrated data with comprehensive reporting tools.

Performance Optimisation

Optimised integrations that don't slow down your existing systems.

Popular Integrations

We work with leading platforms to connect your business ecosystem

Xero Integration

Xero

Accounting

Stripe Integration

Stripe

Payments

GoCardless Integration

GoCardless

Direct Debit

Zoho Integration

Zoho

CRM

HubSpot Integration

HubSpot

Marketing

Salesforce Integration

Salesforce

CRM

MailChimp Integration

MailChimp

Email Marketing

Slack Integration

Slack

Communication

Integration Use Cases

Real-world examples of how integrations transform businesses

E-commerce Integration

Connect your online store with accounting, inventory, and shipping systems

Example Flow:

Shopify → Xero → Inventory Management → Shipping API

CRM Automation

Sync customer data between sales, marketing, and support platforms

Example Flow:

HubSpot → Salesforce → Support Desk → Email Marketing

Financial Workflows

Automate invoicing, payments, and financial reporting processes

Example Flow:

CRM → Invoice Generation → Payment Processing → Accounting

Marketing Automation

Create seamless customer journeys across multiple touchpoints

Example Flow:

Website → CRM → Email Marketing → Analytics → Retargeting

Business Benefits

Transform your operations with intelligent integrations that work around the clock to keep your business running smoothly.

  • Eliminate manual data entry and reduce human error
  • Improve data accuracy and consistency across systems
  • Increase operational efficiency by up to 60%
  • Enable real-time decision making with unified data
  • Reduce operational costs through automation
  • Scale your business without increasing manual workload

ROI Calculator

Time Saved Per Week

20+ hours

Error Reduction

95%

Cost Savings (Annual)

£25,000+

Custom API Integration Services for UK Business

When your business runs on multiple systems that don't talk to each other, your team ends up rekeying data, reconciling spreadsheets, and chasing errors. Our API integration services remove that friction by connecting your software through their APIs so information flows automatically and accurately. From a single one-way sync to a real-time, two-way integration across your whole tech stack, we build the connections that let your systems work as one.

We integrate the platforms UK businesses rely on every day: accounting software such as Xero, Sage, and QuickBooks; payment providers including Stripe and GoCardless; CRMs like HubSpot, Salesforce, and Zoho; e-commerce platforms; and bespoke in-house applications. Where an off-the-shelf connector exists we'll use it; where one doesn't, we build a custom integration tailored to your exact workflow. We can also design and build a custom API for your own software, so partners, customers, and internal tools can connect to it securely.

Every integration is built with reliability and security in mind, using modern authentication, robust error handling, and monitoring so issues are caught before they affect your business. And because APIs evolve, we offer ongoing maintenance and support to keep your integrations running smoothly long after launch.

Integration Success Story

How we connected event finance data to Xero and removed the manual reconciliation behind it

Eventwise logo
Entertainment & Events

Eventwise SaaS Platform

Revolutionary event management SaaS platform with seamless Xero integration for comprehensive event budgeting and financial management.

  • Seamless Xero integration with real-time synchronisation
  • Comprehensive event budgeting and financial management
  • Streamlined expense tracking and reconciliation processes

What We Built

  • Real-time Xero integration
  • Comprehensive event budgeting tools
  • Automated expense tracking
  • Financial reconciliation system
  • Event lifecycle management
Laravel
Vue.js
Xero
MySQL
Redis
Cloud Infrastructure

Have systems that need to talk to each other?

Discuss Your Integration

Integration Services FAQs

What are API integration services?

API integration services connect two or more software systems through their APIs so they can share data automatically. Instead of manually exporting and importing information, an API integration keeps your systems in sync in real time, for example pushing e-commerce orders into your accounting software or syncing customers between your CRM and finance system.

Which systems can you integrate?

We integrate accounting platforms (Xero, Sage, QuickBooks), payment providers (Stripe, GoCardless), CRMs (HubSpot, Salesforce, Zoho), e-commerce platforms, marketing tools (Mailchimp), and bespoke in-house applications. If a system has an API, we can almost always connect it; where one doesn't, we'll advise on the best alternative approach.

How much do software integration services cost?

Cost depends on the number of systems, the volume and direction of data, and how much automation you need. A simple one-way sync is more straightforward than a real-time, two-way integration across multiple platforms. We scope each project up front and provide a fixed, transparent quote after a free consultation.

Can you build a custom API for our software?

Yes. As well as integrating existing third-party APIs, we design and build custom APIs for your own software so other systems can connect to it securely. This is ideal when you want partners, customers, or internal tools to exchange data with your platform.

Do you maintain integrations after they go live?

Yes. APIs change and systems get updated, so we offer ongoing monitoring and maintenance to keep your integrations working reliably, with support options up to 24/7 monitoring and guaranteed response times.

Ready to Connect Your Systems?

Let's discuss how integrations can streamline your business operations and boost productivity.