API & System Integration

Connect Every System So Your Data Flows Without Manual Work

We build APIs and connect the tools your business already uses: websites, apps, ERP, payment gateways, accounting, messaging, logistics, and spreadsheets.

The result is one flow of data, where an order placed in one place updates every system that needs to know, automatically and reliably.

Plan an Integration

Stop Copying Data Between Tools

Most businesses run on several systems that do not talk to each other.
So people re-type orders, export spreadsheets, and reconcile numbers by hand, and mistakes slip through.

At Vastech, we design integrations that are secure, documented, and monitored, so data moves on its own and your team can focus on the work that matters.

What We Build

APIs and integrations that keep every system in sync

  • Payment Gateway Integration

    Virtual accounts, QRIS, e-wallets, and cards through local and global gateways, with automatic payment confirmation.

  • Custom API Development

    Secure, versioned, and documented REST and GraphQL APIs for your apps, partners, and internal systems.

  • System-to-System Integration

    Connect your website, apps, ERP, accounting, CRM, and logistics so data is entered once and shared everywhere.

  • Webhooks & Automation

    Event-driven flows that react instantly to payments, orders, and status changes, with retries and full logs.

  • Data Sync & Reporting

    Scheduled and real-time syncs that bring data from every system into one dashboard or spreadsheet.

What We Focus On

An integration is only as good as its reliability. We design for failures, retries, and security from day one, so data keeps flowing when it matters.

Reliability

Queues, retries, and idempotent processing, so no order or payment is lost or counted twice.

Security

Authentication, signed requests, encryption, and least-privilege access on every connection.

Monitoring

Logs, alerts, and dashboards that show every event and flag problems before users notice.

Documentation

Clear API references and integration guides your team and partners can actually use.

Performance

Fast responses and efficient syncs that keep up with high transaction volumes.

Our Integration Stack

If it has an API, a database, a file export, or a webhook, we can connect it. These are the protocols and platforms we work with most.

Protocols

  • REST
  • GraphQL
  • gRPC
  • Webhooks
  • WebSockets
  • SOAP
  • SFTP

Payments

  • Xendit
  • Midtrans
  • DOKU
  • Stripe
  • PayPal
  • QRIS
  • Virtual Accounts
  • E-Wallets

Messaging

  • WhatsApp Business API
  • Email (SMTP
  • SES
  • SendGrid)
  • SMS Gateways
  • Firebase Cloud Messaging
  • Telegram Bot

Business Platforms

  • Google Workspace
  • Google Sheets API
  • Accurate
  • Jurnal
  • SAP
  • Odoo
  • Marketplace APIs

Logistics & Maps

  • Courier APIs
  • Shipping Rate & Tracking
  • Google Maps Platform
  • Geocoding

Middleware & Security

  • RabbitMQ
  • Redis Queues
  • Kafka
  • n8n
  • OAuth 2.0
  • JWT
  • API Gateways

Our Approach

We map your systems and data flows first, then build, test, and monitor every connection end to end.

01

Audit your systems

We list the tools you use, the data each one owns, and where information is copied by hand.

02

Design the data flow

We define the source of truth, events, mappings, and error handling for every connection.

03

Define the contracts

We specify endpoints, payloads, and authentication, and agree on them with every party involved.

04

Build & connect

We develop the APIs, connectors, queues, and webhooks that move the data.

05

Test end to end

We test real scenarios in sandbox environments, including failures, timeouts, and retries.

06

Monitor

After go-live, every connection is logged and monitored, with alerts when something needs attention.

Let Your Systems Work Together.

Tell us which tools you use. We will connect them into one reliable flow of data.

address
Kirana Two Tower, Level 10A, Kelapa Gading, Jakarta Utara 14250
instagram
@vastech.id