API Development & Integration
API Development and Third-Party Integration Services
Custom REST and GraphQL API development plus integrations with CRMs, ERPs, payment gateways, shipping carriers and marketing platforms.
APIs That Connect Your Website to the Systems Behind It
Most business friction happens between systems: orders retyped into an accounting package, leads copied into a CRM, stock levels that disagree with the warehouse. API development removes that manual work by letting your website, app and back-office tools exchange data automatically and reliably.
We design APIs contract-first — clear resources, predictable responses, versioning and meaningful status codes — and document them so any developer can integrate without guesswork. Authentication uses tokens or OAuth 2.0, sensitive traffic is rate limited, and every request is logged with enough context to trace a problem.
For integrations with platforms you do not control, we handle the awkward parts: pagination limits, rate caps, retries with backoff, idempotent writes, webhook verification and alerting when a partner service goes down, so a third-party outage never silently loses your data.
What’s Included
What Our API Services Cover
Custom REST & GraphQL APIs
Well-structured endpoints for your website, mobile apps or partners, with authentication, pagination and rate limiting.
CRM & ERP Integration
Two-way sync of leads, customers, orders and stock with Salesforce, HubSpot, Zoho, Dynamics, SAP and similar systems.
Payment Gateway Integration
Stripe, PayPal, Razorpay, Authorize.Net and regional gateways, including subscriptions, refunds and secure webhooks.
Shipping & Logistics APIs
Live rates, label generation and tracking from carriers such as UPS, FedEx, DHL, Royal Mail and Australia Post.
Webhooks & Event Pipelines
Signed, replay-safe webhooks with queues and retries so events are processed exactly once, even under load.
API Documentation & Monitoring
OpenAPI specs, example requests, sandbox keys, uptime checks and alerts when an endpoint slows down or fails.
Benefits
What Good API Work Gives You
- Data entered once and reflected everywhere, removing hours of duplicate admin each week.
- Fewer errors: automated transfers do not mistype an order value or an address.
- Real-time visibility of stock, orders and customers across the tools your team uses.
- A stable contract, so your app, storefront and partners can evolve independently.
- Clear logs and alerts, so integration problems are found before customers report them.
Technologies Used for API Development & Integration
We recommend the right tools for your goals, budget and team — never a one-size-fits-all stack.
Discuss Your ProjectHow We Work
Our API Development & Integration Process
Discovery & Consultation
We learn about your business, audience and goals, review any existing website and agree on clear success criteria.
Strategy & Planning
We define the sitemap, features, technology stack and timeline, so scope and budget are clear before work begins.
UI/UX Design
We design wireframes and polished, responsive layouts for your approval, focused on usability and conversions.
Development
We build with clean, standards-based code, integrate your tools and set up an easy-to-use content editor.
Testing & QA
We test functionality, speed, security, accessibility and SEO across browsers and devices before launch.
Launch & Support
We deploy, monitor and fine-tune your site, then provide ongoing maintenance and support as you grow.
FAQ
API Development & Integration FAQs
Can you integrate my website with software that has no public API?
Often yes. Options include a database-level connector, scheduled file exchange (CSV/SFTP), an email-parsing bridge or automation tools such as Zapier. We review what the vendor allows and recommend the most reliable route.
How do you keep integrations secure?
Credentials live in server-side environment configuration, never in front-end code. Traffic is HTTPS only, webhooks are signature-verified, permissions are least-privilege and access tokens are rotated on a schedule.
What happens if a third-party service is down?
Requests are queued and retried with exponential backoff, failures are logged and alerted, and the user-facing experience degrades gracefully instead of breaking. Nothing is lost when the partner comes back online.
Will I get documentation for the API you build?
Yes. You receive an OpenAPI specification, example requests and responses, authentication instructions and a Postman collection your developers or partners can use immediately.
Explore More
More Web Development Services
Technologies and services that work well alongside api development & integration.
Custom Web Development
Bespoke websites and web applications engineered around your workflows — fast, secure, and built to scale with your business.
Front-End Development
Pixel-accurate, accessible front ends built from your designs with HTML5, CSS3, JavaScript, Tailwind or Bootstrap — responsive on every device.
Website Design
Modern, responsive UI/UX design that communicates your value in seconds and guides visitors toward taking action.
WordPress Development
Custom WordPress themes, plugins and WooCommerce builds that are fast, secure and genuinely easy for your team to manage.
Case Studies & Live Demos
API Development & Integration in Practice
Projects where this work made a measurable difference — the problem, what we built and the results. Each one has a working demo you can try.
- React
- TypeScript
- Node.js
Web Application Development
Freight Dispatch & Driver Tracking Platform
A live dispatch board built in React and Node.js that replaced a spreadsheet-and-phone workflow for 120 drivers.
- Node.js
- NestJS
- TypeScript
API & ERP Integration
ERP to Web Shop Integration
A NestJS integration layer moving 312,000 messages a day between an ERP, a web shop and the accounts system.
- Laravel
- PHP 8
- Blade & Livewire
Web Application Development
Property Management & Tenant Portal
A Laravel platform managing 1,140 units — tenancies, maintenance jobs, contractor scheduling and owner statements.
- Elixir
- Phoenix Channels
- Go
Real-Time Web Platform
Live Auction Bidding Platform
An Elixir and Go platform holding 11,000+ concurrent bidders per sale with bid latency measured in milliseconds.
- PostgreSQL
- pg_stat_statements
- Redis
Database Optimisation
Rental Marketplace Database Optimisation
Search dropped from 2.4 seconds to 38 milliseconds, and the marketplace went from six database servers to two.
- Python
- FastAPI
- Tesseract OCR
Data Automation & OCR
Invoice Processing & OCR Automation
A Python pipeline that reads 18,400 supplier documents a month and posts 93% of them without a person keying anything.
From the Blog
Guides and Comparisons Worth Reading
Straight answers on when this technology is the right choice, what it costs and how to get the most from it.
NestJS vs Express: When a Node.js Backend Needs Structure
Express gets a Node API running in an afternoon. NestJS is what keeps it maintainable three years and three developers later. Here is how to tell which one your project needs.
Node.js for Real-Time Features: Tracking, Chat and Live Updates
Live dashboards, driver tracking, notifications and chat all need a server that can hold thousands of open connections. That is what Node is built for.
Donation Pages That Convert: Monthly Giving, Gift Aid and the Thank-You Journey
A donation page has one job, and small details decide whether supporters finish it. Here is how we design the one-off versus monthly choice, capture Gift Aid properly, pick payment options, let fundraisers launch appeals themselves and turn the thank-you into the start of a relationship.
API Development & Integration Enquiry
Tell Us About Your API or Integration
Tell us which systems need to talk to each other and how often data must sync, and we will map out the integration.
- Reply within 24 hoursA real person reviews every request.
- Free consultationHonest advice, no obligation.
- 100% confidentialHappy to sign an NDA.
- We review your requirements
- We reply with questions or a call slot
- You receive a clear, itemised proposal