You will get Build or Fix Your Ruby on Rails Web App (Backend + Frontend)
Top Rated
Project details
Get expert-level Ruby on Rails development — fast, secure, and scalable. I bring years of experience delivering clean, maintainable code and production-ready features. Whether it's fixing bugs, building APIs, or launching full apps, I focus on performance, clarity, and client satisfaction.
Programming Languages
HTML & CSS, JavaScript, Ruby/Ruby on RailsCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$70
|
Standard
$250
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | - | ||
Source Code |
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CE
Chioma Janelle E.
Jun 13, 2026
Back-End Support Specialist Needed
DG
Darren G.
Jan 7, 2026
download hundreds of files via scrape using NodeJs
Great job!
ZW
Zayaan W.
Nov 12, 2025
Looking for Expert to Resolve Next.js + Rails Integration Problem
Iman Fatima exceeded my expectations with her work. She demonstrated strong technical skills, attention to detail, and a proactive attitude in solving challenges. Communication was smooth, deadlines were met, and the final delivery was outstanding. I highly recommend her for anyone looking for a reliable and talented freelancer.
FA
Fahad A.
Jul 13, 2025
React.js Developer Needed – UI Bug Fixes, Mobile Responsiveness & Stripe Integration
I hired Fatima to resolve some minor UI bugs, enhance mobile responsiveness, and handle Stripe integration for my React.js app. She did an excellent job—everything was delivered exactly as requested, with a sharp eye for detail and solid professionalism. Communication was easy and consistent throughout, and she even shared a clear demo video of the final work. The app now looks great on all devices, and the Stripe integration runs smoothly. I'm really happy with the outcome and would gladly work with her again in the future. Highly recommended!
About Iman
Build Scalable LLM, AI & SaaS Products | Full-Stack Web Engineer
100%
Job Success
Lahore, Pakistan - 6:42 am local time
⭐ Reduced DB query times by 40%+ on a live SaaS platform, with zero downtime, thousands of daily users
⭐ GPT-4 AI assistant that resolved 70% of support tickets automatically
⭐Multi-tenant SaaS from scratch: role-based access, Stripe billing, React dashboard
⭐ Fintech payment flow (Stripe, MangoPay, Apple Pay, Google Pay) passed compliance review on the first submission
⭐ Top Rated Plus (3%) Upwork freelancer 5+ years, funded startups to enterprise teams
Most SaaS products don't fail because of bad code; they fail because the architecture wasn't built to scale, the AI behaves inconsistently in production, or the backend collapses under real traffic.
I'm Iman Fatima, a Top Rated Plus(3%) full-stack developer with 5+ years building SaaS platforms, AI-integrated systems, and fintech products for early-stage startups, funded companies, agencies, and enterprise teams.
I don't just write code, I design and develop scalable digital products engineered for growth, performance, and long-term reliability. Whether you're building from zero or scaling what already exists, I focus on systems that are fast, stable, and production-ready from day one.
🚀 What I Build
👉 Full-Stack SaaS Platforms Ruby on Rails, Django, NestJS, FastAPI backends + React, TypeScript, Tailwind frontends
👉 AI-Powered Features GPT-4, LLaMA, LangChain chatbots, voice apps, text-to-query, code generation
👉 LLM Optimization & RLHF consistent, production-grade AI behavior, not just demos
👉 Performance Tuning 40%+ query improvements on live systems using PostgreSQL, MongoDB, Supabase
👉 Payments & Auth Stripe, MangoPay, Apple Pay, Google Pay, JWT, OAuth2
👉 Infrastructure & DevOps Docker, CI/CD on GitLab or Jenkins, AWS, DigitalOcean
⚙️ How I Work
1. Discovery: Understand your product, users, and business model
2. Architecture Design scalable systems, APIs, and database structure from day one
3. Agile Build Milestone-based development with proactive, regular updates
4. QA & Testing RSpec-tested, well-documented code your next engineer can work with
5. Deployment CI/CD pipelines, cloud infrastructure, smooth go-live
6. Post-Launch Scaling, feature updates, performance monitoring, and ongoing support
🛠 Tech Stack
✅ Backend: Ruby on Rails, Django, NestJS, FastAPI, Python
✅ Frontend: React, TypeScript, Tailwind CSS
✅ AI & LLM: OpenAI GPT-4, LLaMA, LangChain, Prompt Engineering, RLHF
✅ Database: PostgreSQL, MongoDB, Supabase, Firebase
✅ Payments: Stripe, MangoPay, Apple Pay, Google Pay
✅ Auth: JWT, OAuth2, Clerk Authorization
✅ DevOps: Docker, CI/CD, AWS, DigitalOcean, GitLab, Jenkins
✅ APIs: REST, GraphQL, WebSockets, SignalR
🎯 Why Clients Choose Me
👉 Architecture-first mindset - I think about scale before writing the first line of code
👉 Proven in production 40%+ performance gains on real-life systems with real users
👉 LLM Enhancement Specialist at Turing AI that behaves correctly, not just impressively
👉 Fast delivery without shortcuts, RSpec-tested, maintainable code from day one
👉 Clear communication, realistic timelines, zero surprises at deadline
📩 Let's Build Your Product
Building a SaaS, adding AI capabilities, or scaling an existing platform? Let's talk. Send me a brief description of your project, and I'll respond with:
✅ Technical approach
✅ Architecture plan
✅ Development timeline
✅ Honest assessment of scope and fit
SaaS Development | Full-Stack Development | Web Application Development | Scalable Architecture | API Development | Backend Development | Frontend Development | AI Development | LLM Integration | GPT-4 | OpenAI API | LangChain | Prompt Engineering | AI Chatbot Development | NLP | RLHF | FastAPI | Django | Node.js | NestJS | Ruby on Rails | REST API | GraphQL | Microservices Architecture | React.js | Next.js | TypeScript | Tailwind CSS | UI/UX Optimization | PostgreSQL | MongoDB | Supabase | Redis | Database Optimization | Query Performance Tuning | Stripe Integration | Payment Gateway Integration | Subscription Systems | OAuth | JWT Authentication | AWS | Docker | CI/CD | Cloud Architecture | DevOps | SaaS MVP Development | AI SaaS Development | Scalable Web Applications | Multi-Tenant SaaS | AI Automation Systems | Startup Product Development | Backend for AI Applications | Production-Ready Systems | High-Performance Web Apps
Steps for completing your project
After purchasing the project, send requirements so Iman can start the project.
Delivery time starts when Iman receives requirements from you.
Iman works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Review
I review your requirements, codebase, and clarify any open questions.
Development Begins
I start coding the requested feature, bug fix, or integration