You will get Full Stack API Integration Expert Stripe OpenAI OAuth Payment Gateway
Project details
I build secure and scalable API integrations and AI automation systems that connect your business tools, reduce manual work and improve workflow efficiency. My focus is on creating reliable integrations that enhance productivity and support business growth.
▶ What I deliver:
✔ Stripe and Chargebee payment gateway integrations
✔ OpenAI and Azure AI Search powered automation solutions
✔ Microsoft Entra ID OAuth and secure authentication systems
✔ Third party API integration for CRM, SaaS and business tools
✔ Workflow automation across platforms like Slack, Shopify and HubSpot
✔ Data synchronization and backend integration architecture
I use modern tools and methods including REST APIs, webhooks, OAuth flows, Postman, Docker, Azure services, AWS, GitHub and AI assisted development using ChatGPT and Copilot for faster and accurate delivery.
API Integration Specialist Stripe OpenAI Azure Entra ID Expert API Developer Integration Engineer Backend Integration Specialist SaaS API Developer Automation Engineer AI Integration Developer Payment Gateway Integration OAuth Developer
▶ What I deliver:
✔ Stripe and Chargebee payment gateway integrations
✔ OpenAI and Azure AI Search powered automation solutions
✔ Microsoft Entra ID OAuth and secure authentication systems
✔ Third party API integration for CRM, SaaS and business tools
✔ Workflow automation across platforms like Slack, Shopify and HubSpot
✔ Data synchronization and backend integration architecture
I use modern tools and methods including REST APIs, webhooks, OAuth flows, Postman, Docker, Azure services, AWS, GitHub and AI assisted development using ChatGPT and Copilot for faster and accurate delivery.
API Integration Specialist Stripe OpenAI Azure Entra ID Expert API Developer Integration Engineer Backend Integration Specialist SaaS API Developer Automation Engineer AI Integration Developer Payment Gateway Integration OAuth Developer
What's included
| Service Tiers |
Starter
$100
|
Standard
$299
|
Advanced
$499
|
|---|---|---|---|
| Delivery Time | 5 days | 8 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 3 | 5 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Frequently asked questions
About Keshave
Full Stack SaaS & AI Developer | Web, Mobile, MVP Scaling
Karachi, Pakistan - 6:38 pm local time
I am a Full Stack SaaS and AI Developer specializing in Web, Mobile, MVP Scaling with 5 plus years of hands on experience working with startups and product teams. I help turn ideas into production ready systems used by real users, focusing on performance, clean architecture, and long term scalability.
My work combines modern web technologies, mobile app development, and advanced AI integration to deliver solutions that are both powerful and practical.
✔ What I can build for you:
→ SaaS Platforms
🗸 End to end SaaS development from MVP to scale
🗸 Multi tenant systems with secure authentication and role management
🗸 Subscription systems, dashboards, and admin panels
🗸 API driven architecture for web and mobile apps
🗸 Scalable database design and cloud deployment
→ AI Powered Applications
🗸 AI chatbots and assistants using OpenAI and Google Gemini
🗸 Voice to text with Whisper and intelligent automation workflows
🗸 AI features including text, image, and real time processing
🗸 Context aware systems with memory and decision making logic
🗸 Automation using n8n for scalable business workflows
→ Web and Mobile Apps
🗸 Modern web apps using MERN stack and GraphQL APIs
🗸 Cross platform mobile apps using Flutter and React Native
🗸 Real time features like tracking, messaging, and analytics dashboards
🗸 Responsive UI with strong UX and performance optimization
🗸 Production ready deployment with CI CD pipelines
☑ Backend and Cloud Expertise:
🗸 Node.js, Express, REST APIs, GraphQL
🗸 AWS, Firebase, Supabase, Docker based deployments
🗸 PostgreSQL, MySQL, MongoDB for scalable data systems
🗸 Secure authentication, permissions, and system design
💡 I do not just build features. I design systems that are maintainable, scalable, and aligned with your long term product vision. Whether you need to launch fast with an MVP or scale an existing product, I bring both technical execution and product thinking.
👉 If you are looking for a Full Stack SaaS and AI Developer for Web, Mobile, MVP Scaling who understands both technology and business impact, let’s connect and build something that lasts.
Full Stack SaaS Developer AI Developer Web App Developer Mobile App Developer MVP Development SaaS Development MERN Stack Developer Node.js Developer React Developer Flutter Developer React Native Developer AI Chatbot Developer OpenAI Developer Google Gemini Developer n8n Automation AWS Developer Firebase Developer Supabase Developer API Development Scalable Web Applications Startup MVP Developer Cloud Backend Developer
Steps for completing your project
After purchasing the project, send requirements so Keshave can start the project.
Delivery time starts when Keshave receives requirements from you.
Keshave works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Analysis & Integration Planning
Understand your business workflows, identify required APIs, define data flow, authentication method and integration architecture.
Development & API Integration
Build secure API connections, implement Stripe, OpenAI, Azure, Entra ID or third party services with proper error handling and automation logic.