You will get Build a Scalable SaaS MVP with Ruby on Rails & React
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Project details
Hi, I’m Zee
I help founders and startups build investor-ready SaaS MVPs using Ruby on Rails + React fast, secure, and built to scale.
Have a great product idea but no reliable development partner to bring it to life?
That’s where I come in.
With 10+ years of experience, 4500+ Upwork hours, and a proven track record of shipping real, profitable SaaS products, I help startups go from concept → production smoothly and efficiently.
What You’ll Get
✅ A fully functional SaaS MVP built with Ruby on Rails, React, and PostgreSQL
✅ Secure user authentication (Devise, Auth0, or Firebase Auth)
✅ Stripe or PayPal integration for subscriptions and payments
✅ Responsive UI with React + TailwindCSS
✅ Scalable backend architecture following best Rails practices
✅ REST or GraphQL APIs for seamless integration
✅ Deployment & CI/CD setup on AWS, Heroku, Vercel, or DigitalOcean
Why Work With Me?
I don’t just write code. I help you build a sustainable SaaS foundation.
Every feature is developed with scalability, performance, and long-term maintainability in mind.
You’ll get a production-ready MVP that’s not just functional but also easy to grow, pivot, and attract investors with.
I help founders and startups build investor-ready SaaS MVPs using Ruby on Rails + React fast, secure, and built to scale.
Have a great product idea but no reliable development partner to bring it to life?
That’s where I come in.
With 10+ years of experience, 4500+ Upwork hours, and a proven track record of shipping real, profitable SaaS products, I help startups go from concept → production smoothly and efficiently.
What You’ll Get
✅ A fully functional SaaS MVP built with Ruby on Rails, React, and PostgreSQL
✅ Secure user authentication (Devise, Auth0, or Firebase Auth)
✅ Stripe or PayPal integration for subscriptions and payments
✅ Responsive UI with React + TailwindCSS
✅ Scalable backend architecture following best Rails practices
✅ REST or GraphQL APIs for seamless integration
✅ Deployment & CI/CD setup on AWS, Heroku, Vercel, or DigitalOcean
Why Work With Me?
I don’t just write code. I help you build a sustainable SaaS foundation.
Every feature is developed with scalability, performance, and long-term maintainability in mind.
You’ll get a production-ready MVP that’s not just functional but also easy to grow, pivot, and attract investors with.
Programming Languages
HTML & CSS, JavaScript, Ruby/Ruby on RailsCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$350
|
Standard
$800
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 8 days |
Number of Revisions | 1 | 1 | 2 |
Number of Pages | 3 | 6 | 10 |
Design Customization | |||
Content Upload | - | - | - |
Responsive Design | - | ||
Source Code |
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CN
Chris N.
Jun 15, 2026
Fullstack Developer with Strong Backend talent for Ruby-on-Rails Project
Z and his team, Huzaifa especially, will remain important partners to us for the long run due to the quality of support and expertise they brought to us for 12 months of working together. They are true partners
KW
Ken W.
Jun 15, 2026
Frontend Developer (React + shadcn/ui + Tailwind v4) — Fitness SaaS
Although our collaboration was short-term, working with Zulqarnain was an absolute pleasure. His communication skills and professional approach are outstanding. Beyond his work ethic, his great personality makes him a joy to work with. I highly recommend him to other clients and would definitely love to partner with him again on future projects.
BW
Brent W.
Mar 30, 2026
React Native Mobile App Developer
JB
Justin B.
Jan 14, 2026
Rafl Shopify App Development Sweepstakes
AA
Abdulmohsen A.
Dec 9, 2025
Node.js and React.js Developer for SaaS Application
Highly recommended, Smart and professional
About Zulqarnain
AI Engineer | LLM Features in Production Apps | Node, Next.js, Python
100%
Job Success
Raiwind, Pakistan - 9:16 pm local time
12 years engineering, 5,160 hours on Upwork, 34 contracts, 100% Job Success. MPhil in Data Science, PUCIT.
WHAT I BUILD
- RAG pipelines over real company data, chunking, embeddings, retrieval quality, evaluation
- Multi-agent and workflow automation systems with proper error handling and retries
- OpenAI and Anthropic integrations wired into product surfaces, not bolted on
- The application around it: Node.js, Next.js, TypeScript, Python, PostgreSQL
- Token and latency cost control, most AI features die on unit economics, not capability
ALSO STRONG IN
Ruby on Rails modernization and rescue work, multi-tenant SaaS architecture, performance and database optimization.
HOW I WORK
I ask what the product needs to do six months from now before I write anything. You get working code in the first week, not a discovery phase. I'm reachable within four hours during US business time, and I say when something is a bad idea.
Available 35+ hrs/week, open to contract-to-hire.
𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬:
AI SaaS, SaaS Development, SaaS Engineer, Full Stack Developer, Full Stack Engineer, React.js, Next.js, Node.js, Ruby on Rails, Rails, TypeScript, JavaScript, MERN Stack, Web Development, Frontend Development, Backend Development, API Development, REST API, GraphQL, PostgreSQL, MySQL, MongoDB, Database Design, Database Optimization, Cloud Computing, AWS, Vercel, Docker, CI/CD, DevOps, Microservices, System Architecture, Software Architecture, Enterprise Applications, SaaS Architecture, Multi Tenant SaaS, AI Integration, OpenAI, Claude AI, Anthropic, LLM Integration, AI Automation, Generative AI, Chatbot Development, Workflow Automation, Performance Optimization, Application Scaling, Scalability, System Stabilization, Bug Fixing, Code Refactoring, Technical Leadership, Team Lead, Product Engineering, MVP Development, Startup Development, Agile Development, Software Engineering, Web Applications, Platform Engineering, Digital Transformation
Steps for completing your project
After purchasing the project, send requirements so Zulqarnain can start the project.
Delivery time starts when Zulqarnain receives requirements from you.
Zulqarnain works on your project following the steps below.
Revisions may occur after the delivery date.
Initial Discussion
We’ll start with a detailed conversation to understand your requirements and expectations.
Project Plan
I’ll create a roadmap and share the milestones and deadlines.