Web Services & APIs
Backend development and API integration
Macoin develops backend APIs and system integrations for business apps in Malaysia, with access controls, data mapping and operational support scoped upfront.
What is Web Services & APIs?
Web services and APIs are the backend layer that lets your applications, partners and internal systems exchange data reliably. They matter most when several products depend on the same information staying correct.

Who this is for
One backend, several frontends
A web app, a mobile app and partner integrations all pulling from the same source of truth.
Connecting business systems
Accounting, logistics, CRM and payments need to agree with each other automatically.
Platforms carrying real load
Traffic is growing and the backend needs to be designed for it rather than patched after each incident.
What We Deliver
REST and GraphQL APIs
Documented, versioned and authenticated properly, so your team and your partners are never guessing.
Third party integration
Payment gateways, logistics providers and accounting software connected and monitored.
Database design
PostgreSQL schemas designed for how your data is actually queried, which is what keeps things fast at volume.
Why choose our approach
Built for production, not demo
Error handling, logging and monitoring go in during the build, not after the first outage.
Security applied consistently
Authentication, rate limiting, input validation and encryption are standard on every endpoint.
Documented from day one
Your team and your partners can integrate without waiting on us for answers.
Designed for spikes
Architected to absorb roughly ten times normal traffic without an emergency refactor.
Connect systems with clear data and access rules
Backend development and API integration connect mobile apps, web platforms and the tools your business already operates. The scope should name the data exchanged, the authoritative system and the actions each connection permits. An integration is ready to operate only when its failure handling and support responsibilities are also understood.
- Provider documentation: supported actions, authentication and test access.
- Records: source of truth, field mapping and shared identifiers.
- Access: which users or systems may read and change each record.
- Reliability: duplicate events, retries, reconciliation and alerts.
- Handover: configuration, monitoring, recovery steps and account ownership.
A mobile app and admin dashboard can share a backend while enforcing different permissions. Payment and booking workflows need clear confirmation rules. We assess the available APIs before committing to an integration; we do not assume every third-party product supports every desired action.
WhatsApp for a quotationPlanning guides for this service
- API and system integration: a buyer's checklist
Plan data ownership, authentication, retries, reconciliation and support when connecting your app, accounting system, CRM or other business tools.
- Mobile app, backend and admin dashboard: the full scope
An app is only one part of a business system. Define the API, database, permissions and staff dashboard before comparing development quotations.
- Software maintenance and developer takeover checklist
Before changing developers, check code, accounts, deployments, data backups and integrations. Separate maintenance, incidents and enhancements in the scope.
FAQ
Web Services & APIs questions we get asked
An API is the doorway one system uses to ask another for information or to record something. It is how your mobile app gets data from your database, or how your website tells your accounting software a payment happened.
Ready to get started?
Tell us about your project. We'll get back to you within one business day.
