API Development and System Integration Services

We are experienced in developing and integrating RESTful APIs that allow for seamless communication between different software systems.

GoodCore has extensive experience developing business-specific APIs to enable seamless integration between disparate systems.

Our team of developers is experienced at developing custom APIs to suit your varying business models and ensure coherent, flexible, and consistent integration with as many systems as possible.

Since 2005, we have helped businesses with their specific API development and integration requirements – everything from simple development of Facebook APIs to highly complex and customised API development.

Our forte lies in our ability to understand the nuances of our client's requirements and develop fully-customised, well-documented, and easily integrable APIs.

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API Development


API Development Services for Mobile Applications

Our core API development services include building reliable, scalable, and easily integrable APIs for mobile applications.

API Development Services for Web-based Systems

We develop robust, compatible and well-documented REST APIs for web-based systems to extend their functionality.

API Development Services for Cloud-based Systems

We specialise in developing cloud-based APIs that help integrate applications with other services in the cloud.


GoodCore's API development and integration expertise includes, but is not limited to, the following:

Payment Gateways

Google APIs



Shipping Method

Yahoo APIs

Twitter APIs

Skype-Based APIs

Facebook APIs

Oracle-Based APIs


Two-Factor Authentication


Finance & Fintech

Loan Management System

Loan Management System

Software platform to facilitate loan application and disbursement for local businesses impacted by COVID-19 under the UK government’s Bounce Back Loan Scheme (BBLS)
View Case Study


Conference Management App

Conference Management App

Powerful mobile apps for the participants of the prestigious Sibos event organized by SWIFT for the financial industry every year
View Case Study


Briefing Management Platform

Briefing Management Platform

Software platform for a Silicon Valley start-up that offers it to Fortune 100 companies for managing briefing programs and events.
View Case Study

Have a project with API development and integrations?

If you require expert API development and software system integration services then look no further!

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Why choose our API development Services

We pride ourselves in being one of the leading API development companies in the UK, since 2005. We not only develop RESTful APIs that are: fully customisable, well-documented, and secure but we also offer API integration services that ensure easy and successful integration with all kinds of mobile, web, and cloud-based systems.



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Frequently Asked Questions

We develop fully customisable, well-documented, and secure RESTful APIs for mobile apps, web-based systems, and cloud-based applications.
We offer a wide range of API development services such as maps and navigation APIs, shipping and payment gateway integrations, SMS APIs, social media integrations, and two-factor authentication.
GoodCore offers software system integration services for organisations that wish to automate and streamline their business processes quickly and efficiently. Our services cover the development and implementation of bespoke software systems as well as the alignment and interconnection of existing systems that will help consolidate your data and operations while maintaining interdepartmental confidentiality where needed.
Even if your product was developed by another provider, we can explore taking it over from the other company. Generally, cooperation from your existing provider is needed. Such projects are always tricky and each project is different from the other, but we are willing to dig deeper to find out how we can synchronise the multiple systems to help you achieve speed and efficiency.

Get in touch with us

we do next

  • Our team contacts you within one business day
  • We engage an initial discussion to understand your requirements
  • Our team of analysts and developers assess the scope and propose a way forward with mutual consultation
  • All information exchange is protected via a mutual NDA
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