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$
USD
I will build a scalable custom saas web application
Masud Hasan
About this gig
I create custom SaaS products and full-stack web applications using Django, FastAPI, Next.js, and AWS. Built for production use, not just demonstrations.
RECENT WORK :
- HIPAA-compliant multi-tenant patient management SaaS (Next.js + Django + PostgreSQL on AWS) launched at 5 locations on the day
- Airwallex payment integration, on a FastAPI backend
- On-device LLM deployment where all user data remains on the client machine
WHAT I DELIVERED :
- tenant SaaS with role-based access control and billing
- Custom backend APIs (Django, FastAPI, Node.js) with a Next.js frontend
- Payment gateways: Stripe, Airwallex
- Secure architecture: tenant isolation, logging, encryption
- AWS deployment with Docker and CI/CD
HOW I WORK :
You deal with me; no outsourcing. Architecture scoped first sprints with regular demos delivered as production-ready documented code.
Message me before ordering so we can agree on scope and the right package.
Respect third-party rights
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Get to know Masud Hasan
Masud Hasan
Full Stack Developer I Web Apps, SaaS and AI Solutions
- FromBangladesh
- Member sinceAug 2014
- Avg. response time1 hour
- Last delivery2 years
Languages
Bengali, English
I build web applications, SaaS products, and AI-powered software for startups, companies, and agencies.
15+ years of experience, backed by UnlockLive IT - a 60-engineer development team with 1,000+ delivered projects for clients in the US, UK, Canada and Australia.
Main stack: React, Next.js, TypeScript, Python (FastAPI/Django), Node.js, PostgreSQL, MongoDB, AWS, Stripe, and the OpenAI and Claude APIs.
I work with you directly - scoping, architecture, build and deployment - and you own clean, documented code at the end of it.
Message me with your project, and I will reply within the hour.
My Portfolio
FAQ
Should I contact you prior to ordering?
Yes. SaaS platforms and web applications differ greatly in terms of scope. Please send me your project idea, necessary features and time frame – and I will propose you a suitable package or offer a custom quote.
What kind of information do you require from me to start?
Your project idea, necessary features, user roles, some design inspiration and estimated time frame for the project. If you cannot provide all the above mentioned information now, please share whatever you have at the moment and I will help you to fill the gaps.
I have an idea but nothing else, do you need more information?
Not at all. I can assist you with defining the necessary core features, user flow and direction of the project before its actual development.
Do I get the source code?
Absolutely. The complete source code is delivered with each product, neatly structured so that your team could later maintain and expand it further.
Will you deploy my project?
Yes. I deploy projects to AWS using Docker and CI/CD. All the necessary documentation and instructions are provided.
Can you work with my existing code base?
Yes. Please send me your GitHub repo and I will extend it, fix, refactor it or add additional modules.
My project doesn't fit into the packages you proposed, what do I do?
Please contact me regarding your project requirements and I will send you a custom quote and estimate the timeline.
