REST API build
Versioned endpoints with authentication, rate limiting, pagination and consistent error responses.
API & Integrations
API Development & Integration
Integrations fail quietly. I build them with retries, logging and clear failure states, so when a third-party service has a bad day you find out from a log entry rather than from a customer.
REST APIsDjango REST FrameworkNode.jsJWTOAuthWebhooksPostmanStripe
Sound familiar?
- Two systems hold the same data and neither is trusted
- A third-party integration breaks and nobody notices for days
- Your API has no documentation, so every consumer asks you directly
- Staff re-key the same information into a second tool every day
Tell me which two systems need to talk to each other and what should happen when one of them is down.
What you get
Concrete deliverables, not a retainer with vague scope.
Third-party integration
Payment gateways (Stripe, JazzCash), e-commerce checkout flows, telephony, email, CRM and analytics services connected with retry and backoff handling.
Webhooks
Inbound and outbound webhooks with signature verification, idempotency and a replay path for failures.
Data synchronisation
Scheduled or event-driven sync between systems, with conflict rules decided up front rather than discovered in production.
Documentation
Usable API documentation and a Postman collection so other developers can integrate without a meeting.
Monitoring
Structured logging and failure alerts on the integration points most likely to break.
How it runs
- Step 1
Contract first
We agree the endpoints and payload shapes before implementation so both sides can build in parallel.
- Step 2
Auth and security
Token strategy, scopes, rate limits and validation designed in, not added later.
- Step 3
Implementation
Endpoints built with tests against the agreed contract.
- Step 4
Integration and hardening
Real third-party calls, retries, idempotency and timeout behaviour.
- Step 5
Handover
Documentation, collection and a walkthrough for whoever maintains it next.
Proof from real projects
Case studies where I delivered exactly this kind of work.
Veeivs Reporting Analytics Platform
A SaaS reporting and ranking platform for multi-branch performance: live centre stats, agent and team lead ran…
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Medicare Portal
A Medicare lead generation and lead tracking portal for healthcare operations, built to manage Medicare leads,…
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Keynou Tools All-in-One Utility Platform
An all-in-one online tools platform with image, PDF, video, converter, compressor and QR utilities, built with…
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Phamanovix Pharmacy Management Software
A multi-tenant pharmacy software product with inventory, orders, prescriptions, suppliers, staff management, r…
Read case studyAPI & Integrations — questions
Can you connect our website to our CRM?+
Yes — form submissions, lead routing, deduplication and status sync are a routine part of this work, whether the CRM is one I built or a third-party product with an API.
Do you integrate payment gateways?+
Yes, including Stripe and regional providers such as JazzCash, covering checkout, webhooks, refunds and reconciliation.
What if the third-party API is badly documented?+
That is common. I work from whatever exists, probe the live endpoints in a sandbox, and document the real behaviour as part of the delivery so your team is not stuck the next time.
Will the API be documented?+
Yes. Endpoint documentation and a Postman collection are part of the deliverable, not an optional extra.
Ready to talk about api & integrations?
Tell me which two systems need to talk to each other and what should happen when one of them is down.
Send project details