United Kingdom
API Development Company UK
REST and GraphQL APIs, third-party integrations and microservice architecture for UK businesses — clean, documented and built for production stability. From HMRC MTD to Salesforce to custom platform APIs.
APIs That Connect Your Business, Not Just Your Systems
Most UK businesses are running on a patchwork of SaaS tools, legacy databases and third-party platforms that don't talk to each other. Every manual data transfer, every re-keying task, every report pulled from three separate systems is the symptom of an API problem. Cyberbeak builds the connections that eliminate that overhead.
We are a UK-managed API development team that has built real-time auction data feeds, logistics tracking integrations, HMRC MTD connectors, WhatsApp Business API platforms and multi-marketplace sync engines. Every API we deliver is documented with OpenAPI specs, versioned for stability, and monitored in production.
API Services We Deliver for UK Businesses
REST API Design & Development
Resource-oriented REST APIs with OpenAPI documentation, JWT / OAuth2 authentication, rate limiting, versioning and production monitoring — built to support web, mobile and third-party consumers.
GraphQL API Development
Flexible GraphQL APIs for complex data models — schema design, resolver optimisation, subscription support for real-time feeds and persisted query caching for high-traffic clients.
Third-Party System Integration
Integration with Salesforce, SAP, Stripe, Twilio, Xero, HMRC MTD, Companies House, Open Banking providers, payment gateways and logistics carriers — built to handle the quirks of each external system's API contract.
Microservice Architecture
Decomposition of monolithic systems into independently deployable services — API gateway configuration, service mesh, inter-service auth and distributed tracing for UK enterprise platforms.
Webhook & Event-Driven Systems
Webhook delivery infrastructure with retry logic, signature verification, event fan-out and dead-letter queues — reliable event-driven integration between UK business systems.
API Gateway & Developer Portals
Self-service API platforms for UK businesses selling API access to partners or customers — authentication, rate-tier management, usage metering and developer documentation portals.
UK API Projects We've Delivered
AuctionBridge — UK
Real-time auction data API delivering live lot status, bid events and payment webhooks to three external buyer platforms — 8ms median response time under 400 concurrent bidders.
Read case study →LogiTrack — Logistics UK
Multi-carrier integration API connecting 6 UK logistics providers — Royal Mail, DPD, DHL, Evri, Yodel and Hermes — with unified tracking, label generation and proof-of-delivery webhooks.
Read case study →FinConnect UK — Fintech
Open Banking API integration with 12 UK banks via TrueLayer — account verification, payment initiation and transaction data with FCA PSD2 compliance and audit logging.
Read case study →StyleForward — Retail UK
Multi-marketplace sync API connecting Shopify, Amazon UK and eBay — real-time inventory synchronisation, unified order management and returns processing across all three channels.
Read case study →Frequently Asked Questions
What API development services does Cyberbeak offer in the UK?+
Cyberbeak offers REST API development, GraphQL API development, third-party integration (Salesforce, SAP, Stripe, HMRC MTD, Companies House), webhook architecture, microservice decomposition and API gateway configuration. All APIs are documented with OpenAPI specs and versioned for production stability.
How long does API development take for UK businesses?+
A focused REST or GraphQL API typically takes 4–8 weeks from discovery to production. A microservice platform with multiple services, API gateway and monitoring typically takes 12–20 weeks. Cyberbeak delivers a fixed delivery plan after a paid discovery sprint.
How much does API development cost in the UK?+
A focused REST or GraphQL API with documentation and testing typically costs £15k–£40k. A full microservice platform typically costs £50k–£160k. Third-party integrations are scoped separately based on external system complexity. Cyberbeak provides fixed-price proposals after discovery.
Can Cyberbeak integrate UK government APIs such as HMRC MTD or Companies House?+
Yes. Cyberbeak has integrated HMRC Making Tax Digital APIs for VAT and corporation tax, Companies House API for entity verification, Land Registry API for property data, and Open Banking APIs for UK financial applications. We are familiar with UK government API authentication patterns and compliance requirements.
Does Cyberbeak build APIs that comply with UK data regulations?+
Yes. All Cyberbeak APIs are built with UK GDPR-compliant data handling — field-level encryption for personal data, audit logging, data retention policy enforcement and DPA-compliant third-party data sharing. For Open Banking integrations, we follow FCA-regulated PSD2 requirements.
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Ready to Connect Your Systems?
Talk to our UK team about your API project. We scope REST, GraphQL and integration work from first conversation to delivery plan within one week.
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