I will integrate apis, payment gateways, and backends to your app

D
damithranga6000
D
damithranga6000
Damith Ranga

About this gig

Are you looking to connect third-party services, process payments securely, or add AI capability to your app? I specialize in building robust API integrations and backend connections for web, mobile, and desktop applications.


As a Full-Stack Software Engineer, I ensure your integrations run seamlessly with clean architecture, secure handling, and complete data integrity.


What I Can Integrate & Build For You:

Payment Gateways: Stripe, PayPal, Razorpay, and custom checkout flows.

Modern APIs: RESTful APIs, GraphQL, Webhooks, and OAuth authentication.

AI & Automation: OpenAI/ChatGPT APIs, custom LLM connections, and automated workflows.

Cloud & Database: Firebase, AWS, MongoDB, and custom server-side microservices.


Why Work With Me?

Security First: Token handling, encrypted keys, and secure endpoints.

Clean Documentation: Well-commented code and easy-to-read API usage docs.

Scalable Architecture: Built to handle high traffic and low latency.


Please send me a direct message with your project requirements before placing an order to confirm the best package!

Get to know Damith Ranga

Damith Ranga

Full Stack Software Engineer Mobile, Web and Desktop

  • FromSri Lanka
  • Member sinceSep 2021
  • Languages

    Sinhala, English
I am a Full-Stack Software Engineer specializing in end-to-end application development (Mobile, Web, & Desktop). Rather than just writing code, I help startups and businesses solve complex technical challenges, debug performance issues, and connect modern AI workflows into their existing software. Let's talk about your project goals before you order.

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