API Development & Integrations

Connect everything. Break nothing.

Most digital products are built on top of APIs — your own and dozens of others. Payment processors, CRMs, communication platforms, data providers. When those connections are fragile, inconsistent, or poorly documented, every integration becomes a source of bugs. We build backend APIs and third-party integrations that are secure, versioned, tested, and documented — so your team and your partners can rely on them.

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What we deliver

RESTful API design and implementation with OpenAPI documentation
GraphQL API setup with schema design and resolvers
Webhook implementation and event-driven architecture
Third-party integrations: Stripe, Twilio, HubSpot, Shopify, SendGrid, and more
Authentication and authorisation (JWT, OAuth 2.0, API key management)
Rate limiting, caching, and performance optimisation
Database schema design and ORM setup (PostgreSQL, MySQL, MongoDB)
API versioning strategy and backwards-compatibility management
Integration testing and automated test suites
OpenAPI/Swagger documentation and interactive API reference

Third-party integrations

Platforms we integrate regularly. If it has an API, we can connect it.

Stripe & Stripe ConnectTwilio (SMS, WhatsApp, Voice)HubSpot CRMShopify & Shopify PartnersSendGrid & MailchimpSalesforceGoogle APIs (Maps, Calendar, Drive)Meta Graph APIXero & QuickBooksCustom ERP / legacy systems

Our approach

Design before build

We produce an API design document before writing a line of implementation code. Endpoints, request/response shapes, auth model, versioning strategy, and error handling — agreed and reviewed before any build work starts.

Security by default

Authentication, authorisation, rate limiting, input validation, and secrets management are built in from day one — not added at the end when a security review flags them. OWASP Top 10 is a checklist we work from, not a reminder list.

Documentation is the deliverable

An API without documentation is a liability. Every engagement includes an OpenAPI spec, an interactive API reference, and a getting-started guide. Your team and your partners should be able to integrate without asking you questions.

Frequently asked questions

What is the difference between REST and GraphQL, and which should I use?

REST is simpler to build, cache, and debug — it works well for most APIs where clients have predictable, stable data needs. GraphQL is better when multiple clients (web, mobile, third parties) need different subsets of the same data, or when over-fetching is a real performance problem. For most product APIs, REST is the right call. For complex data graphs with many consumers, GraphQL pays off. We recommend based on your specific case, not on what's fashionable.

Can you integrate our system with Stripe, HubSpot, Shopify, or other third-party platforms?

Yes — third-party integrations are a large part of what we build. Common ones include Stripe (payments, subscriptions, webhooks), HubSpot (CRM sync, deal automation), Shopify (inventory, orders, fulfilment), Twilio (SMS, WhatsApp, voice), SendGrid and Mailchimp (email), Zapier-compatible webhook endpoints, and custom ERP/CRM integrations. If there is an API for it, we can integrate it.

How do you ensure APIs are secure?

We build authentication (JWT, OAuth 2.0, API keys), authorisation (role-based access control), rate limiting, input validation, and proper error handling into every API from the start — not as afterthoughts. We also handle secrets management, HTTPS enforcement, and CORS configuration. Security is a design requirement, not a final checklist.

Will the API be documented?

Yes. Every API we build is documented with OpenAPI/Swagger specs, interactive API reference (viewable in a browser), and a getting-started guide for any team that will consume it. Documentation is part of the deliverable, not optional.

Can you build an API for my existing database or legacy system?

Yes. Wrapping legacy systems with a clean, modern API is one of the most common projects we take on. It lets you modernise incrementally — the old system stays running, but new clients (mobile apps, third parties, internal tools) consume a well-designed API layer in front of it. We scope this with an initial audit of the existing system before any build work begins.

Need an API built or an integration that actually works?

Tell us what you need to connect, what platform you are building on, and what is currently broken or missing. We respond within 24 hours with a direct proposal.

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