API integration services that connect your systems securely.
Businesses run on many tools that rarely talk to each other. We connect your applications, payment gateways, CRMs, ERPs and SaaS platforms through secure APIs, so data flows automatically and reliably, with a strong focus on security, risk factors and compliance.
Problems we solve
- Orders, payments and customer data are re-entered by hand across several systems.
- You need to accept payments in a new market through a local payment gateway.
- An integration breaks silently and nobody notices until customers complain.
- Partners or customers need API access to your platform.
- Data from multiple tools has to be combined for reporting or automation.
What's included
- Payment gateway integration: card, wallet and local payment methods, including gateways such as Xendit for Indonesian markets, with webhooks, refunds and reconciliation handled properly.
- Business system integrations: CRMs, ERPs, accounting, e-commerce, messaging and logistics platforms.
- Custom API development: well-documented REST APIs for your partners, mobile apps or other systems.
- Middleware and microservices: integration services that can be deployed and scaled independently.
- Security and compliance: authentication, secret management, encryption, input validation and audit logging.
- Monitoring and recovery: retries, alerts and logs so failures are caught and fixed quickly.
How we work
- Map the data flow. Which system is the source of truth, what triggers each sync and what happens on failure.
- Review the APIs and risks. Limits, authentication, compliance requirements and edge cases are documented first.
- Build and test in sandbox. Integrations are tested against provider sandboxes before touching live data.
- Go live with monitoring. Gradual rollout, alerting and documentation for your team.
Technology
REST and GraphQL APIs, webhooks, OAuth 2.0 and API keys, message queues for reliable processing, and backend services in common frameworks. We follow each provider's official SDKs and security guidance.
Who it's for
E-commerce and fintech businesses adding payment methods, companies connecting sales, finance and operations tools, and SaaS products that need integrations or a public API for their customers.
Common integration scenarios
- Syncing new orders from an online store into accounting, inventory and courier systems.
- Adding local payment methods for a new market and reconciling payments with your records.
- Pushing leads from website forms and ads into a CRM with the right owner assigned.
- Exposing a secure partner API so customers can connect their own systems to your platform.
- Sending real-time notifications to email, SMS or messaging apps when key events happen.
Why work with DigiHarbour
- Business-aware engineering. Technical decisions stay connected to the outcome your business actually needs, not to the latest trend.
- Clarity before complexity. We simplify requirements and workflows before adding another layer of technology, which keeps cost and maintenance under control.
- Built for the real world. Permissions, edge cases, validations and operational realities are treated as part of the product from the first sprint.
- Designed to evolve. Architecture and product decisions leave room for the next stage of growth, so version two does not require starting over.
- Clear communication. You get regular demos of working software, written decisions and a single point of contact, wherever your team is based.
Frequently asked questions
Which payment gateways can you integrate?
We integrate gateways that provide documented APIs, including regional providers such as Xendit. Tell us your target markets and we will advise on suitable options.
How do you keep integrations secure?
Credentials are stored securely, traffic is encrypted, webhooks are verified and access follows the principle of least privilege. Sensitive operations are logged for auditing.
What happens if a third-party API goes down?
We design for failure with retries, queues and alerts, so data is not lost and your team is notified.
Can you connect a tool without an official integration?
Usually, if it offers an API or webhooks. If not, we look at export options or alternative approaches and explain the trade-offs.
How this connects to our other services
Integrations are what make the rest of your stack work together. They connect the web apps and mobile apps we build to payment gateways and business tools, and they are the backbone of AI automation workflows. For bigger changes, see custom software development.
Related services
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