How Business Software Connects
E-commerce Shop
→ API Integration →
Japanese ERP / Inventory
→ API Integration →
Accounting & Tax Systems
SYSTEM DATA SYNCHRONIZATION
API & System Integration in Tokyo
Connecting CRMs, e-commerce systems, ERPs, custom accounting software, and message webhooks. Build automated, secure data flows using REST APIs and background workers.
AUTOMATED FLOWS
Automate Workflows and Connect Platforms
Modern business environments rely on multiple specialized software applications. Instead of manually exporting files, I build secure RESTful API client wrappers, handle authorization (OAuth 2.0 / API Keys), set up webhook listeners, and manage asynchronous data queues.
I use PHP, Laravel, Redis, and relational databases (PostgreSQL/MySQL) to build fail-safe integration code that includes error logging, automatic retries, and rate-limit compliance.
API Integrations for the Japanese Market
LINE Messaging
Automate notifications, customer workflows, and CRM chats via the LINE Messaging API.
Payment Gateways
Process transactions locally and internationally via Stripe, PayPay, or GMO. Read about Payment Gateway Integration.
freee Accounting
Synchronize invoices, sales data, and business expenses with freee. See freee API Integration.
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