Secure APIs, webhooks and backend services that connect customer-facing products to payments, CRMs, suppliers, communications and internal operations.
Most integration failures happen after the happy path: duplicate events, rate limits, partial updates, expired credentials or a supplier going offline. I design the contract, data mapping and recovery behaviour together so information stays consistent when real-world failures arrive.
Best for — Products and teams with disconnected systems or fragile APIs
This is usually a fit when
The final scope uses only what the problem needs. These are the common building blocks, not a bundle designed to make a quote larger.
Payments, CRM, accounting, booking, travel, Twilio, messaging and supplier platforms connected through supported APIs.
REST services with authentication, permissions, validation, consistent error handling and useful documentation.
Idempotent handlers, queues and retry policies that remain safe when events arrive twice, late or out of order.
Explicit field mapping, transformation and reconciliation between systems with different concepts and identifiers.
Credential handling, least-privilege access, audit trails and logging appropriate to the information being moved.
Health checks, useful alerts and operational dashboards that show whether data is flowing before a customer reports it.
Short feedback loops keep the scope honest and surface the difficult decisions while they are still inexpensive to change.
We decide which system owns each record and how conflicts, deletes and corrections should propagate.
Payloads, authentication, rate limits and failure behaviour are documented before implementation begins.
Duplicate, delayed, malformed and unavailable-system scenarios are exercised before production traffic arrives.
Staged deployment, logs, metrics and alerts make the integration observable from its first production event.
These are shipped systems from my engineering history—not demo projects created to fill a services page.
Senior Fullstack Developer
Booking and payments for WalkThePlanet, a startup travel platform, end to end.
Four external travel APIs unified behind one booking and payment flow.
Lead Developer / Fullstack Developer
Built the calling platform that replaced the company's third-party subscription outright.
Recurring SaaS cost removed, replaced by software the business owns.
Bring the current process, the constraint and the outcome you need. You will leave the first call knowing whether it is worth building and what the likely next step looks like.
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