You will get Professional & Scalable Web Application | Next.js, FastAPI, NestJS | SaaS
Project details
I’m a Senior Full Stack Engineer with 6+ years of experience building scalable SaaS platforms, fintech systems, and mobile-first products used by thousands of real users worldwide.
I specialize in end-to-end product development, covering system design, backend architecture, APIs, mobile applications, dashboards, integrations, and cloud deployment. I help clients turn ideas into production-ready, scalable solutions—from concept to launch and long-term growth.
🔧 What I Can Build
Full-stack SaaS platforms, fintech and payment systems, mobile-backed APIs (Flutter supported), e-commerce & marketplace platforms, mental health, wellness & EdTech systems, admin panels, real-time systems (chat, video, notifications), and AI-powered applications.
🛠 Tech Stack
Frontend: React, Next.js, Flutter
Backend: Django, FastAPI, Node.js, NestJS, Laravel
Databases: PostgreSQL, MySQL, MongoDB, Firebase
Cloud: AWS, Docker
Integrations: Stripe, Agora, Maps, AI services, APIs
💎 What You’ll Get
Secure, scalable architecture, clean, maintainable code, strong performance and security practices, clear communication, and reliable delivery.
📩 Let’s build something solid, scalable, and future-proof.
I specialize in end-to-end product development, covering system design, backend architecture, APIs, mobile applications, dashboards, integrations, and cloud deployment. I help clients turn ideas into production-ready, scalable solutions—from concept to launch and long-term growth.
🔧 What I Can Build
Full-stack SaaS platforms, fintech and payment systems, mobile-backed APIs (Flutter supported), e-commerce & marketplace platforms, mental health, wellness & EdTech systems, admin panels, real-time systems (chat, video, notifications), and AI-powered applications.
🛠 Tech Stack
Frontend: React, Next.js, Flutter
Backend: Django, FastAPI, Node.js, NestJS, Laravel
Databases: PostgreSQL, MySQL, MongoDB, Firebase
Cloud: AWS, Docker
Integrations: Stripe, Agora, Maps, AI services, APIs
💎 What You’ll Get
Secure, scalable architecture, clean, maintainable code, strong performance and security practices, clear communication, and reliable delivery.
📩 Let’s build something solid, scalable, and future-proof.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$79
|
Standard
$299
|
Advanced
$799
|
|---|---|---|---|
| Delivery Time | 3 days | 10 days | 25 days |
Number of Revisions | 3 | 5 | 9 |
Number of Pages | 3 | 10 | 25 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$99 - $999
Additional Revision
+$49
Additional Page
(+ 1 Day)
+$39
Content Upload
(+ 1 Day)
+$20
2 reviews
(2)
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BA
BD Chat A.
Feb 17, 2026
Great experience working with Mr. Mahmudul. He took complete ownership of the project and delivered high-quality work within the agreed timeline. His communication was clear and proactive throughout the process, and he consistently demonstrated strong technical expertise and attention to detail. The overall collaboration was smooth and professional. I would definitely work with him again and highly recommend him to others.
BA
BD Chat A.
Feb 17, 2026
You will get Professional & Scalable Web Application | Next.js, FastAPI, NestJS | SaaS
Great experience working with Mr. Mahmudul. He took complete ownership of the project and delivered high-quality work within the agreed timeline. His communication was clear and proactive throughout the process, and he consistently demonstrated strong technical expertise and attention to detail. The overall collaboration was smooth and professional. I would definitely work with him again and highly recommend him to others.
SA
Samio A.
Feb 16, 2026
Project Up & Running
Mahmudul took full ownership of the project and successfully set up our existing Flutter source code without issues. He quickly resolved dependency and configuration problems and ensured the application was running smoothly. Communication was clear, professional, and proactive throughout the process. Highly recommended for Flutter projects.
About Mahmudul
Senior Full Stack Engineer | Mobile & Web | FastAPI, Flutter, Nextjs
100%
Job Success
Dhaka, Bangladesh - 2:00 am local time
I help startups and businesses build scalable Android, iOS, Desktop, and Web applications from idea to production.
With 5+ years of hands-on experience, I’ve delivered 25+ mobile apps and 30+ web applications, including fintech, mental health, SaaS, eCommerce, and EdTech platforms used by real customers in production.
🚀 WHAT I BRING TO YOUR PROJECT
I don’t just write code. I build systems that scale.
✅ End-to-end product development (idea → architecture → launch → scale)
✅ Android & iOS apps (Flutter, native integrations)
✅ High-performance web apps & admin dashboards
✅ Secure backend APIs & system design
✅ Payment gateway integrations (Stripe, regional gateways)
✅ Real-time systems (chat, voice, video, Agora SDK)
✅ AI integrations (OpenAI, RAG, LLM-based systems)
✅ Cloud architecture & AWS deployment
🧠 TECHNICAL STACK
• Mobile: Flutter, Android (Java/Kotlin), iOS (Swift)
• Frontend: React.js, Next.js
• Backend: Django, FastAPI, Node.js, Laravel, Nest.js
• Database: PostgreSQL, MySQL, MongoDB, Firebase
• Cloud: AWS (EC2, S3), CI/CD, Git
• Integrations: Stripe, Agora, Maps API, Vimeo, Banking APIs
I choose technology based on your business goals — not trends.
💼 PROVEN PRODUCTION EXPERIENCE
I’ve led engineering teams as a CTO and VP of Engineering, which means I understand business priorities, deadlines, scalability, and long-term maintainability.
Some highlights:
• Mental Health Platform with AI companion & real-time therapy sessions
• International Money Transfer Apps with secure transaction systems
• Multi-tenant eCommerce SaaS serving thousands of merchants
• EdTech platform supporting live classes & large concurrent users
• Real-time communication apps with voice & video calling
I design with performance, security, and scalability in mind from day one.
🤝 WHY CLIENTS WORK WITH ME LONG-TERM
• I take full ownership — you won’t need to micromanage
• Clean, maintainable, production-grade code
• Clear and proactive communication
• Strong problem-solving & system architecture skills
• Product-focused mindset, not just task-based development
I treat your product like it’s my own.
📩 LET’S BUILD SOMETHING GREAT
Whether you're building an MVP, scaling an existing product, or fixing performance issues — I can help.
Send me your idea, and I’ll suggest the best technical approach with clarity and honesty.
Looking forward to working on your next big idea.
Steps for completing your project
After purchasing the project, send requirements so Mahmudul can start the project.
Delivery time starts when Mahmudul receives requirements from you.
Mahmudul works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering & Discovery
Analyze business goals, target users, and key features. Define project scope, technical needs, and success metrics.
Planning & Architecture
Design system architecture, database schemas, API structure, and deployment strategy. Plan for scalability, performance, and security.