API Development & Integration
We build custom APIs and integrate third-party platforms so your tools work together automatically, securely and in real time.
We build secure, documented REST and GraphQL APIs from scratch. This allows your internal systems, mobile apps and business partners to share ongoing data safely.
We connect your website to external API services. Payment gateways, shipping providers, CRM systems integrated flawlessly into your existing workflow.
We build & develop APIs that sit on top of older, inflexible software. This allows your modern web applications to read and write data to your legacy databases.
Automated data transfer between your website and systems like Salesforce, SAP or HubSpot. Customer records, order data and inventory levels stay perfectly in sync.
We secure your endpoints with OAuth 2.0, JWT authentication and rate limiting. Your data is protected against unauthorized access, scraping and injection attacks.
Event-driven APIs that triggers actions. When a payment clears or a shipment drops, the relevant system is updated immediately without manual polling.
Disconnected software creates bottlenecks. If your sales team is manually copying data from your website into your CRM, you need an API integration. We build the digital bridges that connect your disparate systems. Whether you need a custom REST API for your mobile app or a complex integration with an archaic payment provider, we write the code that makes them talk.
All API development is handled by our senior engineers in Bangkok. We do not rely on fragile third-party connectors like Zapier for core business operations. We write native, robust code that handles error logging, data validation and retry logic. We have integrated complex ERP systems for manufacturers, built booking engine APIs for hotels and synced inventory for regional ecommerce brands.
Our integration clients include businesses in Bangkok, across Thailand and internationally. We work with companies that have outgrown manual processes and need their tools to communicate instantly. From securing endpoints to writing comprehensive technical documentation for your partners, we handle the entire API lifecycle with predictable pricing.
Businesses across Thailand trust our engineers to connect their critical software systems. Fixed pricing, secure code and reliable native integrations built in Bangkok.
Sierra IT Group Co., Ltd.
99 Soi Thian Thale 28,
Bangkhuntian Chailtalay Road,
Tha Kham, Bang Khun Thian
Bangkok 10150
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