You will get Secure Payment integration & Multi-tenant Database Architecture for SaaS
Project details
Need to connect your app with external services or payment systems?
I will integrate secure and scalable REST APIs into your web or mobile application.
I provide clean code, reliable performance, and seamless API communication.
You will get a secure and reliable API integration for your web or mobile application. I specialize in integrating REST APIs, payment gateways, and third-party services that help your application communicate smoothly with external systems.
With strong experience in full-stack development using technologies like Flutter, Node.js, and modern backend frameworks, I focus on building clean, scalable, and well-structured integrations. My goal is to ensure that your application performs efficiently, securely handles data, and connects seamlessly with external services.
Whether you need to integrate a payment gateway, authentication service, third-party API, or custom backend API, I will implement a stable and optimized solution. I follow best practices for security, performance, and maintainable code so your system can scale easily as your product grows.
You will receive well-organized source code, clear communication, and reliable delivery.
I will integrate secure and scalable REST APIs into your web or mobile application.
I provide clean code, reliable performance, and seamless API communication.
You will get a secure and reliable API integration for your web or mobile application. I specialize in integrating REST APIs, payment gateways, and third-party services that help your application communicate smoothly with external systems.
With strong experience in full-stack development using technologies like Flutter, Node.js, and modern backend frameworks, I focus on building clean, scalable, and well-structured integrations. My goal is to ensure that your application performs efficiently, securely handles data, and connects seamlessly with external services.
Whether you need to integrate a payment gateway, authentication service, third-party API, or custom backend API, I will implement a stable and optimized solution. I follow best practices for security, performance, and maintainable code so your system can scale easily as your product grows.
You will receive well-organized source code, clear communication, and reliable delivery.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$25
|
Standard
$85
|
Advanced
$175
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 6 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | ||
Content Upload | - | - | |
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$10 - $40
Additional Revision
+$5
Additional Page
(+ 1 Day)
+$5
Design Customization
(+ 1 Day)
+$5
Content Upload
(+ 1 Day)
+$5Frequently asked questions
4 reviews
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MB
Maryam B.
May 21, 2026
Build an AI-powered ecommerce platform — web + mobile
Aliasgar is an excellent developer. He built our AI-powered ecommerce platform with great skill and attention to detail. The work was clean, fast, and exactly what we needed. He communicated well throughout the project and delivered on time. Highly recommended!
JI
Javed I.
Apr 20, 2026
AI Product Recommendation Feature Development
Awesome working with Aliasgar V.! Built a smooth AI product recommendation system with Flutter & Node.js. Everything works great, clean code, and delivered on time. Super easy to work with
MA
Muhammad A.
Apr 19, 2026
Add AI Chat Assistant to Existing eCommerce App (Flutter + Node.js)
Great work. He understood the task and completed it perfectly.
The AI chat integration works smoothly. Highly recommend Aliasgar V.
The AI chat integration works smoothly. Highly recommend Aliasgar V.
AH
Ali H.
Apr 11, 2026
SaaS Application Repair & Enhancement Specialist
"Very responsive and professional" efficiently identified and fixed login and Payment transaction problems. The performance of the app has greatly improved. strongly recommended
About Aliasgar
Senior Full-Stack Developer | Flutter & MERN | AI & MVP Specialist
100%
Job Success
Hawalli, Kuwait - 11:38 pm local time
I specialize in building Flutter mobile apps, MERN stack web applications, SaaS MVPs, and AI-powered platforms designed for real users, real traffic, and real growth.
Most clients come to me when they need a startup-ready developer who understands both product thinking and clean technical execution, not just code.
About Me
I am a Senior Full-Stack Developer with 5+ years of experience. I am currently working as a Software Engineer at Value Growth Advisory (Kuwait).
I have built and contributed to systems handling thousands of active users, including fintech-grade applications managing real transactions, secure APIs, and scalable backend architecture.
My focus is on build products that are stable, scalable, and investor-ready from day one.
SaaS, Mobile & Web Development Services
I help startups and founders with:
SaaS MVP Development (Flutter / MERN / Next.js)
Flutter App Development for iOS & Android
Full Stack Web Applications (MERN Stack)
AI Integration & Automation Systems
API Development & Third-Party Integration
Stripe / Payment Gateway Integration
Startup MVP Development & Prototyping
Multi-tenant SaaS Architecture
Admin Dashboards & Internal Tools
If you need a SaaS MVP developer, Flutter app developer, or full stack MERN developer, I can handle end-to-end development.
My Development Approach
I do not just build features, I build scalable product systems.
My process ensures:
Clean and maintainable architecture
Fast MVP development for startups
Secure backend and API design
Optimized performance for scale
Business-focused technical decisions
I always focus on building solutions that can go from: MVP → Early users → Growth → Scale
Core Expertise
Mobile Development:
Flutter, Dart, Cross-platform App Development
Web & Full Stack:
MERN Stack (MongoDB, Express, React, Node.js), Next.js, TypeScript
Backend & APIs:
REST APIs, Node.js, Express, Firebase, Supabase
AI & Automation:
OpenAI API, AI chatbot integration, workflow automation, LLM-based systems
Payments & SaaS:
Stripe integration, subscription systems, fintech workflows
Why Clients Hire Me
Clients choose me when they want:
A startup-focused full stack developer
A Flutter app developer who understands performance
A SaaS MVP builder who thinks like a product engineer
Someone who can handle both frontend + backend + deployment
I focus on delivering real business value, not just writing code.
Recent Work Experience
Fintech SaaS platforms with secure payment flows and subscriptions
Flutter mobile apps for cross-platform product launches
AI-powered tools and automation systems
Scalable backend systems with REST APIs and database optimization
SaaS dashboards and marketplace platforms
Let’s Build Your Product
If you have an idea or even if it is just a concept. I can help you turn it into a structured, scalable product.
Let’s discuss:
MVP scope
Tech stack selection
Development roadmap
Fast launch strategy
Send me a message and let’s start building your product the right way.
Keywords
Full Stack Developer, Flutter Developer, MERN Stack Developer, SaaS MVP Developer, Startup MVP Development, AI Integration Developer, Web Application Developer, Mobile App Developer, API Integration Specialist, Stripe Developer, Backend Developer, Next.js Developer, Node.js Developer, Scalable SaaS Architecture, Multi-tenant SaaS, AI Automation Developer, ChatGPT Integration, Business Automation Tools, Cross-platform Mobile App Development
Steps for completing your project
After purchasing the project, send requirements so Aliasgar can start the project.
Delivery time starts when Aliasgar receives requirements from you.
Aliasgar works on your project following the steps below.
Revisions may occur after the delivery date.
Project Review & Setup
I review your API documentation, project requirements, and source code to understand the integration scope and prepare the development environment.
API Integration & Development
I integrate the REST API or payment gateway into your application and implement the required backend or frontend logic for smooth data communication.