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 Web & App Engineer | Flutter & MERN | AI & MVP
100%
Job Success
Hawalli, Kuwait - 5:29 am local time
After 𝟰+ 𝘆𝗲𝗮𝗿𝘀 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗿𝗲𝗮𝗹-𝘄𝗼𝗿𝗹𝗱 𝘀𝗼𝗳𝘁𝘄𝗮𝗿𝗲, I understand what founders need beyond working code: a product that is secure, maintainable, scalable, and ready to grow with the business.
If you are a looking for a 𝗿𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝗦𝗲𝗻𝗶𝗼𝗿 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 to build a SaaS MVP, mobile app, AI-powered platform, or scalable web product, I can take your idea from concept to production.
I specialize in building 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻-𝗿𝗲𝗮𝗱𝘆 𝘀𝗼𝗳𝘁𝘄𝗮𝗿𝗲 — not prototypes that need to be rebuilt once real users arrive.
From frontend and mobile development to backend architecture, databases, APIs, payments, AI integrations, system design, and deployment, I can handle the complete development lifecycle.
𝗚𝗶𝘃𝗲 𝗺𝗲 𝘁𝗵𝗲 product you want to build, the 𝗽𝗿𝗼𝗯𝗹𝗲𝗺 𝘆𝗼𝘂 𝗻𝗲𝗲𝗱 𝗳𝗶𝘅𝗲𝗱, or even an early-stage idea, and 𝗜’𝗹𝗹 𝗵𝗲𝗹𝗽 turn it into a practical technical solution that can 𝗴𝗿𝗼𝘄 with your 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀.
𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗
⇥ SaaS MVPs & multi-tenant platforms
⇥ Flutter apps for iOS & Android
⇥ React & React Native applications
⇥ Full-stack web platforms & dashboards
⇥ Node.js & Laravel backend systems
⇥ AI-powered applications & OpenAI integrations
⇥ REST APIs & third-party integrations
⇥ Stripe/payment gateways & subscriptions
⇥ Admin dashboards & internal tools
⇥ Marketplace & ecommerce platforms
⇥ Authentication & role-based systems
⇥ Existing SaaS repair, modernization & performance optimization
⇥ Scalable backend & database architecture
𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗛𝗜𝗥𝗘 𝗠𝗘
I don’t just wait for a list of tickets. I approach projects as a 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿.
I think about the fastest path to launch, 𝘄𝗵𝗮𝘁 𝘂𝘀𝗲𝗿𝘀 𝗮𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗻𝗲𝗲𝗱, how the system should 𝘀𝗰𝗮𝗹𝗲, where 𝘀𝗲𝗰𝘂𝗿𝗶𝘁𝘆 or performance may become a problem, and which 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗱𝗲𝗰𝗶𝘀𝗶𝗼𝗻𝘀 will save time and money later.
My goal is to build products that can move through:
𝗜𝗱𝗲𝗮 → 𝗠𝗩𝗣 → 𝗘𝗮𝗿𝗹𝘆 𝗨𝘀𝗲𝗿𝘀 → 𝗚𝗿𝗼𝘄𝘁𝗵 → 𝗦𝗰𝗮𝗹𝗲
𝗖𝗢𝗥𝗘 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘
Mobile:
Flutter | Dart | React Native | Firebase | Push Notifications | Payments
Web & Full Stack:
React | JavaScript | TypeScript | Node.js | Express.js | Laravel
Backend & Databases:
Node.js | Laravel | PostgreSQL | MongoDB | MySQL | Firebase | Supabase | REST APIs
AI & Automation:
OpenAI API | LLM Integration | AI Chatbots | AI Features | Workflow Automation | API Integration
Architecture & Problem Solving:
System Design | Software Architecture | C++ | Data Structures & Algorithms
I have 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 with 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 handling 𝗿𝗲𝗮𝗹 𝘂𝘀𝗲𝗿𝘀, financial workflows, transactions, authentication, secure APIs, and 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝘀𝘆𝘀𝘁𝗲𝗺𝘀.
𝗜 𝗖𝗔𝗡 𝗛𝗘𝗟𝗣 𝗜𝗙...
✓ You need a startup MVP built from scratch
✓ Your SaaS needs an experienced full-stack engineer
✓ Your existing app has bugs, performance, or architecture issues
✓ You need Flutter or React Native development
✓ You need React + Node.js or Laravel development
✓ You want to add AI to an existing product
✓ You need APIs, payments, subscriptions, or third-party integrations
✓ Your MVP works and now needs to scale
✓ You need one engineer who can understand the entire system
𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞
Flutter | Dart | React | React Native | JavaScript | TypeScript | Node.js | Express.js | Laravel | PostgreSQL | MongoDB | MySQL | Firebase | Supabase | OpenAI API | REST APIs | Git | C++ | DSA | System Design | Software Architecture
𝗟𝗘𝗧’𝗦 𝗕𝗨𝗜𝗟𝗗 𝗬𝗢𝗨𝗥 𝗣𝗥𝗢𝗗𝗨𝗖𝗧
Whether you already have specifications or only an idea, 𝗜 𝗰𝗮𝗻 help 𝗱𝗲𝗳𝗶𝗻𝗲 the 𝗠𝗩𝗣 𝘀𝗰𝗼𝗽𝗲, architecture, tech stack, development roadmap, launch strategy, and scaling plan.
𝗦𝗲𝗻𝗱 𝗺𝗲 an invitation or 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 with what you’re trying to build. If it’s a good fit, 𝗜’𝗹𝗹 𝗲𝘅𝗽𝗹𝗮𝗶𝗻 how I would 𝗮𝗽𝗽𝗿𝗼𝗮𝗰𝗵 it and the 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗽𝗮𝘁𝗵 I recommend.
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.