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I have a React site whose interface is fully designed and working. What still remains is the server-side work, and I need someone who can sit with me at our Rajajinagar office, plug straight into the codebase and get it across the finish line. Here is what’s left to build: • User authentication powered by JSON Web Tokens (JWT) – sign-up, login, protected routes, token refresh and secure storage. • Database management – the schema and a few tables are already in place, but the structure is only partially set up. You will need to review what exists, complete the missing collections/tables, write the remaining queries or ORM models, and seed initial data where required. • API integration – wire the finished front-end components to clean, well-documented REST endpoints, handle errors gracefully and ensure the responses line up with the UI expectations. All front-end calls are already stubbed; you will mainly be creating or completing the controllers, middleware and data layer, then testing everything end-to-end on the local network before we push to staging. Tech you should be comfortable with: Node.js, Express (or a comparable framework), JWT, whichever database you prefer to finish the current setup (it’s running on SQL right now, but I’m open to a quick migration to Postgres or MySQL if that speeds things up), Git and basic Docker commands for local containers. This is a strictly onsite engagement. You’ll have a dedicated workstation, immediate access to the designer and me for quick feedback loops, and we can clear blockers in real time. My goal is to wrap the backend in no more than one intense working week, including tests and a quick security review. Deliverables will be: 1. Fully functional backend repository pushed to our Git server 2. Postman (or Thunder Client) collection covering every new endpoint 3. A short hand-off document outlining the database schema, JWT secret rotation steps and any environment variables If you’re confident you can walk in, own these tasks and leave the project deployment-ready, let’s lock dates and get started.
Project ID: 40672375
43 proposals
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Active 6 days ago
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43 freelancers are bidding on average ₹23,119 INR for this job

Hello, I have checked your project requirement and I am fully able to execute your project successfully. ➔ Please inbox me So we can have quick discussion and proceed further. ➔ Available to get started immediately. My related experience level 6+ years and I possess all the require skills for this project. I will also share my work samples related to your job, please inbox me. Awaiting your reply. Regards Kuldeepak
₹3,800 INR in 7 days
7.6
7.6

I’m delighted to know that you need someone seasoned in JavaScript and Node.js, as these are my core skills. With over a decade of experience in Full-Stack Development, I have built scalable web applications like yours, driven by React, Node.js, and Express. I am adept at using JWT for user authentication, securing your data and ensuring that your app is robust. Your ambitious timeline matches my work ethic: speed and quality come hand-in-hand for me. Whether it's setting up or completing the database schema, writing queries to ensure all REST endpoints function seamlessly with the front-end, or even considering migrations to Postgres or MySQL - I've got it covered! In my previous experiences, I’ve implemented architectures on SQL databases as well as NoSQL architecture like MongoDB (which aligns with your tech-stack preference). Migrating databases won't be a hindrance, rather an optimization for the structure. In essence, what makes me stand out from other candidates is my deep comprehension of the requirements, ability to deliver absolute reliability through maintainable clean code and communicate effectively throughout every stage of our project. Choosing me means choosing to wrap up your backend efficiently and efficaciously. Let's make this happen!
₹3,800 INR in 7 days
7.1
7.1

Hello, We would be glad to assist you with this project. Protovo Solutions LLP is an experienced technology and business solutions agency serving global clients since 2016. We have successfully completed projects in custom software development, CRM and ERP customization, SaaS platforms, marketplaces, e-commerce, AI automation, digital marketing, and virtual assistance. Our team has hands-on expertise in Laravel, CodeIgniter, PHP, Node.js, React, Python, WordPress, Shopify, PrestaShop, OpenCart, PerfexCRM, RISE CRM, Odoo, APIs, automation, SEO, data management, and business support services. With more than 100 client reviews on Freelancer, we understand the importance of clear communication, reliable delivery, quality work, and ongoing support. We can review your complete requirements, recommend a practical approach, and execute the work through clear milestones. Relevant work samples and technical details can be shared during our discussion. Please connect with us through chat so we can discuss the requirement and take this forward. Kind regards, Protovo Solutions LLP
₹7,000 INR in 10 days
6.8
6.8

Hi there, Your React frontend is ready with stubbed API calls - I can sit at your Rajajinagar office, review the existing SQL schema, and build out the JWT auth layer, complete the data layer, and wire up REST endpoints that match your UI exactly. What I'll do: ✅ Implement JWT authentication - sign-up, login, protected routes, token refresh with secure storage ✅ Complete the database schema, write ORM models, and seed initial data ✅ Build controllers and middleware connecting your stubbed frontend to working endpoints ✅ Deliver Postman collection, hand-off doc, and push to your Git server ✅ Test end-to-end on your local network before handoff Skills: ✅ Node.js & Express backend development ✅ JWT authentication and token management ✅ SQL/PostgreSQL database design and ORM modeling ✅ RESTful API development and integration ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ 300+ projects delivered, 280+ five-star reviews Why me: I can start immediately and work onsite with focused intensity to hit your deadline. Quick question - what ORM or query builder is currently in the project? Matching existing patterns from day one will speed things up. I can deliver in 1 day for 4604 INR and can start right now.
₹4,604 INR in 1 day
5.7
5.7

Your React frontend is already complete, so the remaining job is to establish a secure backend contract that matches every stubbed request without forcing UI rework. At Poundit, I built Node.js and Django backends with JWT authentication, PostgreSQL data models, REST APIs, and role-based access. I can review the current SQL schema and frontend request shapes, then complete signup, login, access and refresh tokens, protected middleware, ORM models, seed data, controllers, validation, and consistent error responses. I’ll preserve the existing database where practical instead of migrating without a clear benefit. Each endpoint will be tested against the React interface and documented in a Postman collection, with environment variables, schema notes, and JWT secret-rotation instructions included. I can own the technical scope, but I am available remotely rather than onsite in Rajajinagar. Would you consider remote delivery with continuous written updates and shared testing access?
₹5,000 INR in 2 days
5.0
5.0

Hello, I’d be happy to complete the backend development for your React application and work onsite from your Rajajinagar office. I have 5+ years of experience with Node.js, Express, JWT authentication, SQL databases, REST APIs, Git, and Docker. I will provide: * Complete JWT authentication with protected routes and token refresh * Database schema completion, ORM/models, queries, and seed data * Clean REST API development and front-end integration * Proper validation, error handling, and security checks * End-to-end testing across the existing UI and backend * Postman/Thunder Client collection for all endpoints * Git repository with clean, documented backend code * Handover documentation covering database, environment variables, and JWT secret rotation I’m comfortable working in an intensive onsite environment and can focus on completing the backend within the proposed one-week timeline. Warm Regards, Monica Bhatia
₹2,800 INR in 6 days
5.0
5.0

I am ready to sit onsite with you for your React website related work. My fes is 799999 for 20 days. And you will bear my all the expenses like travelling, food, hotel room stay and other expenses. After 20 days gone I will charge you same for next 29 days. I can provide you my service for 1 year only, because I already have lots of work. Let me know if you are interested?
₹799,999 INR in 20 days
5.0
5.0

Hi, Thanks for sharing your project. It aligns well with work I’ve successfully completed for other clients, and I’m confident I can deliver a high-quality solution tailored to your requirements. Before providing an accurate timeline, scope, and budget, I’d like to clarify a few key details to ensure we're aligned from the start. Freelancer’s proposal character limit makes it difficult to cover everything thoroughly here. If you're available, let's connect via chat. I can walk you through similar projects I've completed, discuss the best approach for your specific requirements, and answer any questions you may have. Once I understand your expectations, I'll provide a clear execution plan with realistic timelines and pricing. I’m ready to get started as soon as we finalize the details and look forward to working with you. Best regards, Mayank Sahu
₹3,800 INR in 7 days
4.1
4.1

Hi, I can work onsite at your Rajajinagar office and complete the backend for your existing React application within the planned one-week timeline. My approach will be to first review the current codebase, SQL schema, stubbed frontend calls, and API requirements. Then I’ll complete the backend controllers, middleware, authentication, database layer, and endpoint integration. I can help with: * Node.js / Express backend * JWT signup/login * Protected routes * Token refresh flow * SQL/Postgres/MySQL database work * Schema/table completion * REST API development * Error handling * Frontend API integration * Git and Docker basics * Local testing and staging prep Deliverables: * Functional backend repo pushed to Git * JWT authentication completed * Database queries/models completed * API endpoints connected to React UI * Postman/Thunder Client collection * Environment variable notes * JWT secret rotation notes * Short hand-off document I’ll focus on completing the missing backend cleanly, testing end-to-end with the existing React frontend, and leaving the project deployment-ready. Best regards Ankit
₹5,000 INR in 1 day
3.7
3.7

Hi! I’m Tarang. I have read your entire project requirements. I will provide you with a React Backend Completion within your budget. I have more than 12 years of experience and have completed 150+ projects in design and development. I am very interested in this job opportunity. I am available to start immediately and can deliver high-quality work within your timeline. Please join the chat so we can discuss further and get started right away.
₹3,800 INR in 7 days
3.3
3.3

Hi-Abror Here From Uzbekistan. "Complete React Backend Integration" - I can finish your backend using Node.js, Express, JWT, REST APIs, and database integration efficiently. I can complete authentication, protected routes, token handling, database models, controllers, middleware, REST endpoints, error handling, and frontend integration while preserving existing functionality carefully. I will test every endpoint end-to-end, prepare Postman documentation, review security, finalize environment configuration, and deliver a deployment-ready repository with handover documentation. Can you confirm the current database engine and existing backend structure before development begins? Looking forward to working with you.
₹3,800 INR in 7 days
3.3
3.3

Hi, At first glance, this looks straightforward but there’s usually one part that causes issues later. I’ve handled similar work before and can help you avoid that. Regards, Rajesh
₹3,800 INR in 7 days
2.4
2.4

Hello, I have 6+ years of experience in backend and full-stack development, and I understand that your React frontend is already complete and you need the remaining backend work finished onsite in Rajajinagar within one focused working week. I can take over the existing codebase, review the current database structure, complete the required tables/models, seed initial data, and build clean REST APIs using Node.js and Express. I will implement secure JWT authentication including signup, login, protected routes, token refresh, middleware, and secure token handling. I will connect the existing frontend stubs with the completed APIs, ensure proper validation and error handling, and test the complete flow end-to-end. I’m also comfortable working with SQL databases, PostgreSQL/MySQL, Git, Docker, and Postman/Thunder Client. Before handover, I will perform a basic security review, provide the complete backend repository, API collection, database documentation, environment-variable details, and JWT secret rotation guidance. I can work closely with you and the designer onsite to resolve issues quickly. I am ready to discuss the existing setup and lock the dates immediately. Best Regards, Shailender
₹7,000 INR in 5 days
0.9
0.9

Hello, I am an experienced Full Stack Developer with strong experience in React, Node.js, Express, JWT, SQL and REST APIs. I have carefully read your requirements and can complete the backend and make it deployment-ready within your one-week timeline. I can handle authentication, database setup, API integration, controllers, middleware, testing and security review with your existing React frontend. I’m comfortable with onsite development and can work directly with you and your designer for quick feedback and faster delivery. I will provide daily progress updates, Postman collection, proper documentation and **1 month of free support for the delivered features. I would love to discuss the project and get started. Thank you!
₹1,500 INR in 7 days
1.1
1.1

Hi, I understand you need a skilled backend developer to complete your React site's server-side functionality. With extensive experience in Node.js, RESTful API development, and database management, I’m ready to jump in and help you wrap this up efficiently. My approach will be: - First, I will set up user authentication using JWT, ensuring secure routes and token management. - Next, I will review and finalize your database schema, create the necessary tables, and write all required queries or ORM models. - Finally, I will integrate the front-end with well-documented REST APIs and conduct end-to-end testing to ensure everything aligns perfectly. I thrive in collaborative environments and can commit to an intense working week to meet your timeline. Are you available to discuss this further and confirm the start date?
₹4,159.63 INR in 7 days
0.6
0.6

The JWT refresh flow is where most setups break, users get logged out mid-session if the token expires while they're filling a form. I'd handle this by storing a short-lived access token in memory and a longer-lived refresh token in an HttpOnly cookie, then silently swap them in the background without interrupting the UI. Most devs overlook connection pooling when switching from SQL to Postgres, which can slow down the API under load. I'd configure the pool size to match the expected concurrent users and add a retry mechanism for failed queries. The codebase is ready for me to start right away.
₹10,000 INR in 3 days
0.0
0.0

Hello, I hope you’re doing well. I reviewed your project requirements and I’m confident that I can help you build a high-quality, modern, and user-friendly solution according to your needs. Onsite-React-Backend-Completion I’m Ankur, a Full Stack Developer with 7+ years of experience in: • Custom Website Development • E-commerce Development • Mobile App Development • Flutter App Development • Android & iOS Applications • WordPress & PHP Development • UI/UX Design • Admin Panels & APIs I have successfully completed 500+ projects for startups, businesses, and individual clients worldwide. Why work with me? ✔ Clean and professional development ✔ Mobile-friendly and responsive design ✔ Fast communication and regular updates ✔ Scalable and secure solutions ✔ On-time delivery ✔ 3 months of free support after completion My goal is not just to complete the project, but to build a solution that helps your business grow. I would be happy to discuss your project in detail and start working immediately. Looking
₹4,000 INR in 15 days
0.0
0.0

I understand the challenge is not building the React interface, but completing the backend layer that connects authentication, database logic, and existing frontend components properly. Since the UI is already ready, the main work is making sure the APIs, data flow, and security pieces match what the application expects. My approach would be to first inspect the current codebase, database structure, existing API stubs, and authentication flow. Then I would complete the server logic, implement JWT-based authentication, finish the missing database models and queries, and connect the REST endpoints with proper error handling. I would also test the full flow locally before moving anything forward. My relevant skills include Node.js, RESTful API development, and PostgreSQL database management. I prefer fixing the current structure instead of changing the stack unless there is a clear reason, because unnecessary migrations can create more problems. Could you confirm the current backend framework and database setup already used in the project?
₹1,000 INR in 2 days
0.0
0.0

Hi, I can take over the remaining backend work and work directly with your existing React codebase onsite in Rajajinagar. I’m comfortable with **Node.js, Express, JWT authentication, SQL/PostgreSQL, REST APIs, Git, and Docker**. I can finish the auth flow, review and complete the current database structure, implement the missing controllers/middleware, connect the existing frontend calls, and test everything end-to-end before staging. I’ll also provide the Postman collection and clear hand-off notes for the schema, environment variables, and JWT configuration. One question: which SQL database and ORM/query layer is the current backend using now? Best, Catherine
₹600 INR in 7 days
0.0
0.0

I've built several production backends with Node.js and Express, and I'm comfortable jumping into partially completed codebases and shipping fast. I'll complete your JWT auth layer with secure token refresh logic, finish your SQL schema based on what the React frontend expects, write clean controllers and middleware to wire up those stubbed front-end calls, and seed test data for immediate validation. I'll also document the setup, generate a full Postman collection, and run end-to-end testing to catch integration issues before staging. Ready to start onsite and work collaboratively to clear blockers in real time.
₹606 INR in 5 days
0.0
0.0

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