You will get Backend API & Third-Party Integrations
Project details
I help businesses build reliable backend systems and integrate third-party services that are secure, scalable, and easy to maintain.
As a senior full-stack developer with 10+ years of experience, I design and develop backend APIs that support real production workloads — not just basic CRUD endpoints.
This service is ideal if you need:
✔ Backend APIs for web or mobile applications
✔ Integration with third-party services (payments, external APIs, AI tools)
✔ Secure authentication and authorization
✔ Database design and performance optimization
I focus on clean architecture, proper error handling, and long-term scalability so your backend remains stable as your product grows.
Clear communication, clean code, and predictable delivery are always part of the process.
As a senior full-stack developer with 10+ years of experience, I design and develop backend APIs that support real production workloads — not just basic CRUD endpoints.
This service is ideal if you need:
✔ Backend APIs for web or mobile applications
✔ Integration with third-party services (payments, external APIs, AI tools)
✔ Secure authentication and authorization
✔ Database design and performance optimization
I focus on clean architecture, proper error handling, and long-term scalability so your backend remains stable as your product grows.
Clear communication, clean code, and predictable delivery are always part of the process.
Programming Languages
HTML & CSS, JavaScript, Ruby/Ruby on RailsWhat's included $499
These options are included with the project scope.
$499
- Delivery Time 3 days
- Number of Revisions Unlimited
Frequently asked questions
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GB
Guy B.
Nov 4, 2025
Lovable.dev expert for bugs fixes
Great work ! highly recommended !
AJ
Amisha J.
Oct 6, 2025
Full-Stack MEAN Developer (Full-Time, Angular + Node.js)
AH
Ali H.
Jul 15, 2025
Web UI Development Bug Fix for Open AI Assistant (NestJS & Vue.js)
We hired Raheel Shahzad to fix a series of UI bugs in our OpenAI Assistant interface, and the results were exceptional. They quickly identified the issues, communicated clearly throughout the process, and implemented clean, efficient solutions that improved both usability and performance. Their deep understanding of frontend frameworks and attention to detail really stood out. Highly professional, fast turnaround, and great problem-solving skills — we’ll definitely be working with them again!
MS
Muhammad S.
May 16, 2025
Fix & Improve AI Chatbot in Next.js (Streaming, UI, and Backend Integration)
Consistently delivers high-quality work, thank you!
CM
Charlie M.
May 9, 2024
React Developer Needed for Cosmetic Enhancements
It was great working with Raheel! He meets all the deadlines. Looking forward to working with him again!
About Raheel
Senior Full-Stack Developer | React, Next.js, Node,ROR,Python& AI Apps
100%
Job Success
Sahiwal, Pakistan - 5:18 am local time
With 𝟏𝟎+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐩𝐫𝐨𝐟𝐞𝐬𝐬𝐢𝐨𝐧𝐚𝐥 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞, I specialize in full-stack development using 𝐑𝐞𝐚𝐜𝐭, 𝐀𝐧𝐠𝐮𝐥𝐚𝐫, 𝐚𝐧𝐝 𝐍𝐞𝐱𝐭.𝐣𝐬 𝐨𝐧 𝐭𝐡𝐞 𝐟𝐫𝐨𝐧𝐭𝐞𝐧𝐝, combined with 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐍𝐞𝐬𝐭𝐉𝐒, 𝐑𝐮𝐛𝐲 𝐨𝐧 𝐑𝐚𝐢𝐥𝐬, 𝐏𝐲𝐭𝐡𝐨𝐧, 𝐚𝐧𝐝 𝐏𝐇𝐏 𝐨𝐧 𝐭𝐡𝐞 𝐛𝐚𝐜𝐤𝐞𝐧𝐝. My focus is not just writing code, but delivering systems that support real business growth and long-term stability.
𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐦𝐞 𝐰𝐡𝐞𝐧 𝐭𝐡𝐞𝐲 𝐧𝐞𝐞𝐝:
✔ A senior developer who can take ownership from 𝐢𝐝𝐞𝐚 → 𝐌𝐕𝐏 → 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭
✔ Clean, well-structured, and maintainable code (not short-term hacks)
✔ A reliable engineer for 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐩𝐚𝐫𝐭𝐧𝐞𝐫𝐬𝐡𝐢𝐩𝐬 𝐚𝐧𝐝 𝐜𝐨𝐦𝐩𝐥𝐞𝐱 𝐬𝐲𝐬𝐭𝐞𝐦𝐬
✔ Clear communication and predictable delivery
𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭
✔ React, Angular, Next.js
✔ Component-based & responsive UI
✔ Server-side rendering (SSR) & performance optimization
Backend Development
✔ Node.js, NestJS
✔ Ruby on Rails
✔ Python (Django)
✔ PHP (Yii2)
𝐀𝐏𝐈𝐬 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬
✔ RESTful APIs & GraphQL
✔ Third-party integrations
✔ Authentication & authorization (JWT, OAuth)
𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 & 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞
✔ PostgreSQL, MySQL, MongoDB, SQL Server
✔ MVC & modular system design
✔ Scalable application architecture
𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞
✔ AWS, Docker
✔ CI/CD pipelines
𝐏𝐫𝐨𝐟𝐞𝐬𝐬𝐢𝐨𝐧𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
✔ Fintech, E-commerce, and Real Estate platforms
✔ Single-page applications (SPAs) & SSR applications
✔ Backend services and long-lived codebases
✔ Agile teams using Git, GitHub Flow, and Jira
𝐂𝐀𝐒𝐄 𝐒𝐓𝐔𝐃𝐘
𝐓𝐨𝐠𝐥 𝐀𝐈 – 𝐎𝐧𝐞-𝐂𝐥𝐢𝐜𝐤 𝐖𝐚𝐥𝐥𝐞𝐭 & 𝐀𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦
𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐲: Fintech / AI
𝐑𝐨𝐥𝐞: Senior Full-Stack Developer
Togl AI is a browser-based wallet that allows users to 𝐬𝐢𝐠𝐧 𝐮𝐩, 𝐬𝐢𝐠𝐧 𝐢𝐧, 𝐚𝐧𝐝 𝐦𝐚𝐤𝐞 𝐩𝐚𝐲𝐦𝐞𝐧𝐭𝐬 𝐨𝐧 𝐚𝐧𝐲 𝐰𝐞𝐛𝐬𝐢𝐭𝐞 𝐰𝐢𝐭𝐡 𝐚 𝐬𝐢𝐧𝐠𝐥𝐞 𝐜𝐥𝐢𝐜𝐤, reducing friction across the web.
I contributed as a senior full-stack developer, focusing on frontend performance, backend services, and AI-powered features.
𝐊𝐞𝐲 𝐂𝐨𝐧𝐭𝐫𝐢𝐛𝐮𝐭𝐢𝐨𝐧𝐬
✔ Built modern frontend interfaces using 𝐑𝐞𝐚𝐜𝐭 𝐚𝐧𝐝 𝐍𝐞𝐱𝐭.𝐣𝐬
✔ Implemented server-side rendering (SSR) for performance and SEO
✔ Developed backend services using 𝐏𝐲𝐭𝐡𝐨𝐧
✔ Integrated AI functionality using APIs from OpenAI Inc.
✔ Designed and optimized 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋 databases
✔ Worked on secure authentication and authorization flows
✔ Collaborated closely with stakeholders on product and UX decisions
𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤
React, Next.js, Python, PostgreSQL, AI APIs
𝐑𝐞𝐬𝐮𝐥𝐭
✔ Launched a production fintech platform with real users
✔ Simplified user onboarding with one-click authentication
✔ Built a scalable foundation for future growth and integrations
𝐂𝐀𝐒𝐄 𝐒𝐓𝐔𝐃𝐘 𝟐
𝐂𝐚𝐫𝐒𝐞𝐫𝐯 – 𝐒𝐚𝐚𝐒 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐟𝐨𝐫 𝐀𝐮𝐭𝐨 𝐑𝐞𝐩𝐚𝐢𝐫 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬
𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐲: Automotive SaaS
𝐑𝐨𝐥𝐞: Senior Full-Stack Developer
CarServ is a large-scale SaaS platform built to function as an 𝐨𝐩𝐞𝐫𝐚𝐭𝐢𝐧𝐠 𝐬𝐲𝐬𝐭𝐞𝐦 𝐟𝐨𝐫 𝐚𝐮𝐭𝐨𝐦𝐨𝐭𝐢𝐯𝐞 𝐫𝐞𝐩𝐚𝐢𝐫 𝐬𝐡𝐨𝐩𝐬, helping businesses manage operations, payments, and third-party integrations from a single system.
I worked as a senior full-stack developer, contributing to both frontend and backend development for a 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐠𝐫𝐚𝐝𝐞, 𝐦𝐮𝐥𝐭𝐢-𝐭𝐞𝐧𝐚𝐧𝐭 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦.
𝐊𝐞𝐲 𝐂𝐨𝐧𝐭𝐫𝐢𝐛𝐮𝐭𝐢𝐨𝐧
✔ Built and maintained backend features using 𝐑𝐮𝐛𝐲 𝐨𝐧
✔ Developed data-driven frontend components using Angular
✔ Designed and optimized PostgreSQL database schemas
✔ Integrated Stripe for secure payments and subscriptions
✔ Implemented scheduled background tasks using Cron Jobs
✔ Integrated third-party automotive repair APIs
✔ Deployed and maintained services on AWS
Tech Stack
Angular, Ruby on Rails, PostgreSQL, AWS, Stripe, Cron Jobs, Third-Party APIs
Result
✔ Delivered a scalable SaaS platform used by real automotive businesses
✔ Enabled secure payments and automated operational workflows
✔ Built a maintainable architecture designed for long-term growth
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𝐇𝐨𝐰 𝐈 𝐖𝐨𝐫𝐤
I work best with clients who value 𝐜𝐥𝐞𝐚𝐧 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞, 𝐫𝐞𝐚𝐥𝐢𝐬𝐭𝐢𝐜 𝐭𝐢𝐦𝐞𝐥𝐢𝐧𝐞𝐬, 𝐚𝐧𝐝 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐦𝐚𝐢𝐧𝐭𝐚𝐢𝐧𝐚𝐛𝐢𝐥𝐢𝐭𝐲. I’m not a good fit for rushed, low-budget, or quick-fix projects.
If you’re looking for a 𝐬𝐞𝐧𝐢𝐨𝐫 𝐟𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 who can contribute immediately and help you build software the right way, feel free to invite me to discuss your project.
Steps for completing your project
After purchasing the project, send requirements so Raheel can start the project.
Delivery time starts when Raheel receives requirements from you.
Raheel works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements & API Planning
Review business requirements Define API structure and integrations
Backend Development
API development Business logic implementation Database setup and optimization