
Open
Posted
•
Ends in 8 hours
Paid on delivery
My web application needs a thorough full-stack pass. Both the frontend and backend contain bugs that appear during normal user flows, and resolving these is the first priority. Right after stabilising the codebase, we will dive into new functionality: rolling out fresh features, polishing and extending existing ones, and wiring in selected third-party services. Feature work spans three fronts: user-interface improvements built in React (TypeScript), deeper backend logic in Node.js/Express, and new REST/GraphQL APIs that will be documented with OpenAPI. Everything lives in a GitHub repo with a Kanban board and CI pipeline; work happens on feature branches, merged by pull request with unit tests. Deliverables • Repaired critical and minor bugs recorded in the tracker • Updated UI per supplied Figma screens • Refactored or extended backend logic with passing tests • New API endpoints fully documented • Seamless integration with the chosen third-party service (details shared at kick-off) • Deployments to staging and, once approved, production Acceptance criteria: no lint or test regressions, code coverage unchanged or better, all acceptance checks green on CI, and a smooth experience in the latest Chrome, Firefox, and Safari. If you are comfortable moving from React components to SQL queries and back again—and enjoy leaving code cleaner than you found it—this should be a rewarding sprint together.
Project ID: 40373845
97 proposals
Open for bidding
Remote project
Active 4 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
97 freelancers are bidding on average ₹24,020 INR for this job

Hi there, I can help you with stabilizing your existing application and then smoothly moving into feature development across both frontend and backend. I have been working on React (TypeScript) and Node.js/Express based applications for a long time, especially fixing live product issues where bugs appear during real user flows, and then extending the system with new features without breaking existing functionality. My approach will be to first go through your current codebase and bug tracker, fix the critical issues affecting user experience, and make sure the application is stable with proper testing and CI checks passing. Then I will work on UI updates based on your Figma designs, followed by backend improvements, API enhancements (REST/GraphQL), and integration with third-party services while keeping the code clean, documented, and maintainable. I am comfortable working with GitHub workflows, feature branches, pull requests, and maintaining test coverage so everything stays production-ready. I would request to connect once so I can review the current setup and start with the bug fixes immediately. Thanks, Rahul A.
₹20,000 INR in 7 days
7.8
7.8

This looks like a great fit, I will triage and fix the tracked bugs first — React UI and Node/Express backend — then move into feature work: updated components from your Figma screens, extended backend logic, and new REST/GraphQL endpoints documented with OpenAPI. For the third-party integration, I will isolate it behind an adapter layer so swapping or upgrading the service later does not ripple through your codebase — keeps tests stable and deploys safe. Questions: 1) Is the GraphQL layer Apollo-based or another framework? 2) Which third-party service category are we integrating — payments, messaging, or something else? Looking forward to discussing further. Best regards, Kamran
₹24,746 INR in 10 days
7.3
7.3

Your CI pipeline will fail the moment someone merges untested code into main if you don't enforce branch protection rules and mandatory test coverage thresholds. I've debugged enough "it works on my machine" disasters to know that a Kanban board alone won't prevent regressions when multiple devs are touching the same codebase. Before I map out the stabilization plan, I need clarity on two things: What's your current test coverage percentage, and are you running integration tests against real MongoDB/CouchDB instances or just mocking data access? Second, which third-party service are you integrating - payment gateway, analytics platform, or something else? The architecture changes dramatically depending on whether we're handling webhooks, OAuth flows, or batch data syncs. Here's the execution approach: - REACT + TYPESCRIPT: Refactor components using strict null checks and discriminated unions to catch type errors at compile time, eliminating 70% of runtime bugs before they hit production. - NODE.JS + EXPRESS: Implement centralized error handling middleware and request validation schemas (Joi or Zod) so invalid payloads never reach your business logic layer. - MONGODB/COUCHDB OPTIMIZATION: Add compound indexes on frequently queried fields and implement connection pooling to prevent database timeouts under concurrent load. - REST + GRAPHQL APIS: Generate OpenAPI specs automatically from route definitions using tsoa or similar, ensuring docs stay synchronized with actual endpoints. - CI/CD HARDENING: Configure Husky pre-commit hooks to block commits that fail linting or drop coverage below baseline, plus automated Lighthouse audits on every PR. I've stabilized 8 legacy codebases over the past three years where "quick fixes" had piled up into technical debt. Let's schedule a 20-minute call to review your bug tracker priorities and agree on which issues block new feature work versus which can be deferred.
₹22,500 INR in 7 days
7.3
7.3

I can stabilize your full stack quickly, then turn that stable base into clean feature delivery without disrupting CI or coverage. This project is a strong fit because it spans exactly what I do best: React/TypeScript UI fixes, Node.js/Express backend repair, and API work that stays testable, documented, and deployment-ready. I’m comfortable moving from Figma screens to frontend implementation, then back through business logic, Mongo/NoSQL queries, and REST/GraphQL endpoints. Key strengths: • Fast bug triage across frontend and backend user flows • Clean, maintainable code with unit tests and no lint regressions • API documentation and third-party integrations done with production discipline I’ve spent 10+ years building and fixing full-stack applications in JavaScript ecosystems, including React, Node.js, Express, REST APIs, and database-driven features. I also work comfortably in GitHub PR workflows with feature branches, CI checks, and staged releases. My approach: first audit and reproduce the tracked bugs, fix the highest-impact issues, and verify all acceptance paths. Then I’ll implement the UI updates from Figma, extend backend logic, wire in the selected service, document new endpoints in OpenAPI, and deploy to staging for review before production. If you’d like, I can review the tracker and repo structure with you and outline the fastest path to a clean first milestone.
₹25,000 INR in 14 days
6.7
6.7

Hello, I’ve gone through your project details, and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, specializing in Node.js and React, working with both the frontend and backend. My approach focuses on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I can assist in repairing the critical and minor bugs you’ve identified, enhancing the user interface in line with your Figma designs, and refactoring backend logic with detailed documentation. My experience with REST/GraphQL APIs and third-party service integration will also ensure a seamless implementation. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: Could you share the details of the third-party services you'd like to integrate? Let’s discuss over chat! Regards, Arpit Jaiswal
₹27,750 INR in 1 day
5.6
5.6

Hi, I am an IIT Grad, MongoDB Certified Developer, ex-BFSI and worked at fortune 500 companies. I will make it a reality for you. As a Full Stack Bug Fixes & Features, I will thoroughly debug both frontend and backend codebases using a combination of static analysis tools, debugging software, and iterative testing to identify and resolve the bugs, followed by implementing new features and functionality in React, Node.js/Express, and OpenAPI. Kindly click on the chat button so we can discuss and get started. Will share you my prior projects done and my resume too. I have been doing freelancing since 2019 worked at top MNCs in both USA and India. Lets connect
₹25,000 INR in 7 days
5.3
5.3

Hello, I have extensive experience in the mentioned technologies and am ready to start immediately. Let’s connect via chat to discuss the project requirements further. Thank you, Jignesh
₹35,000 INR in 5 days
5.3
5.3

Hi there! I have worked on apps where bugs showed up during normal user flows and slowed down both delivery and confidence. The fix was always the same at the start: stabilize the product first, then build new features on clean ground. Your project needs someone who can move across the full stack without losing momentum. I can handle the React TypeScript UI fixes, trace backend issues in Node and Express, improve SQL or data layer logic, and ship new REST or GraphQL endpoints with clean OpenAPI docs. I also work comfortably with GitHub flow, feature branches, pull requests, CI checks, and test coverage requirements. What stands out here is that you are not only asking for bug fixing. You need someone who can repair tracked issues, match Figma updates accurately, keep lint and tests green, document APIs properly, and make sure staging and production releases stay smooth across Chrome Firefox and Safari. I like this kind of sprint because the goal is not just to make things work again but to leave the codebase cleaner and easier to extend for the next round of features and third party integrations. I am ready to get started and help you move this forward with solid execution. Please share the repo access, tracker, and anything needed from your side to begin.
₹25,000 INR in 7 days
4.8
4.8

With my extensive experience in Full Stack Development spanning over a decade, your project could not be in better hands. I have successfully handled over 100 projects, making me well-versed in the efficient and effective resolution of backend and frontend bugs. Not only will I resolve the issues currently hampering your web application, but I will also implement lasting solutions, ensuring a smoother user experience. Furthermore, working on a Kanban board in Github with a CI pipeline is not new to me. In fact, it is a format I thrive in as it allows me to work in an organized flow while maintaining ample scope for iterations and enhancements. My versatility extends to UI/UX design- with several successful projects under my belt where I've polished Figma designs to actualized user interfaces. A comprehensive digital strategy implemented alongside the sprints can enhance your website further, which is an added value when partnering with me. Let's embark on this 'rewarding sprint' together; transforming your web application into its fully optimized potential. Choose me for 10+ years of proven expertise combined with a passion to create scalable and secure solutions aligned precisely with your needs. Together we can elevate your users' experience across Chrome, Firefox and Safari browsers - let's deliver!
₹27,500 INR in 7 days
4.7
4.7

Hello I can handle the full-stack cleanup and feature development for your application efficiently. I will start by fixing all critical and minor bugs to stabilize core user flows. Frontend updates will be implemented in React (TypeScript) based on your Figma designs. Backend logic in Node.js/Express will be refactored and extended with proper testing. I will build and document new REST/GraphQL APIs using OpenAPI. Third-party integrations will be added cleanly without breaking existing functionality. All work will follow GitHub workflow with feature branches, PRs, and CI checks. I will ensure no regressions, stable coverage, and smooth performance across major browsers. Ready to start immediately and deliver clean, maintainable code.
₹15,000 INR in 7 days
4.9
4.9

Hey, I understand your priority is to stabilize the application by fixing frontend and backend issues first, then move into feature enhancements, UI updates from Figma, API expansion, and third-party integrations while keeping CI checks and test coverage intact. I am comfortable working across React (TypeScript) interfaces, Node.js/Express backend logic, and database layers, moving between bug fixing, refactoring, and new API development. In my recent full-stack work, I handled similar codebases where I resolved production bugs, implemented UI updates, extended REST/GraphQL endpoints, and ensured all changes passed linting, unit tests, and CI pipelines before deployment. I also follow structured GitHub workflows—feature branches, pull requests, and test-backed merges, so improvements are delivered without regressions and the codebase remains cleaner after each sprint. Would you like me to begin with the highest-priority bugs from your tracker or review the current CI failures first?
₹28,700 INR in 6 days
4.6
4.6

Hello, I can help you stabilise and enhance your full-stack application by first fixing all critical and minor bugs across both frontend (React + TypeScript) and backend (Node.js/Express) to ensure smooth user flows without regressions. I will systematically debug, reproduce issues from your tracker, and resolve them with clean, test-covered fixes while maintaining existing functionality and improving overall code quality. After stabilisation, I will refactor and extend both UI and backend logic based on your Figma designs, ensuring pixel-perfect implementation and consistent UX across Chrome, Firefox, and Safari. I will also develop new REST/GraphQL APIs with proper structure and document them using OpenAPI standards for easy integration and scalability. All work will follow strict Git workflow practices using feature branches, pull requests, and CI validation with unit tests to ensure no linting or test regressions and stable code coverage. I also have strong experience integrating third-party services and can seamlessly wire them into your existing architecture. Deliverables will include fixed and optimised codebase, updated UI, new APIs, backend improvements, staging + production deployments, and a fully stable CI pipeline. I can start immediately and work in an agile, sprint-based manner with clean communication throughout. Regards, Mutahra https:
₹25,000 INR in 2 days
4.2
4.2

Hello, I’ve gone through your job description and understand you need a full-stack developer to first stabilize your React (TypeScript) frontend and Node.js/Express backend, fix existing bugs, and then extend the system with new features, API integrations, and third-party services. With 5+ years of experience in full-stack development, I’ve worked on similar React + Node systems involving debugging, refactoring, and scalable API development. What I can help you with: • Fix frontend/backend bugs and stabilize existing user flows • Implement UI updates based on Figma and improve React components • Build and document new REST/GraphQL APIs with proper testing Warm regards, Monica Bhatia
₹19,000 INR in 3 days
4.6
4.6

Hey, your project, Full-Stack Bug Fixes & Features looks like a great fit for my skills. I've worked on similar JavaScript projects and can deliver solid results. Let me know if you'd like to chat about the approach.
₹12,500 INR in 7 days
4.3
4.3

I understand this isn’t just feature work—you need a solid full-stack cleanup first, fixing real user-flow bugs across your React (TypeScript) frontend and Node/Express backend before building on top of it. I’m comfortable working across the stack, debugging, refactoring, and then extending features while maintaining clean architecture, tests, and CI standards. I can handle UI updates from Figma, implement/document new REST/GraphQL APIs with OpenAPI, and ensure smooth third-party integrations—all via structured GitHub workflows with PRs and test coverage intact. The focus will be stability first, then scalable, well-tested feature delivery. Looking forward for your positive response in the chatbox. Best Regards, Hassan T
₹32,000 INR in 7 days
4.3
4.3

**DO NOT PAY ME UNTIL I COMPLETE! :)** Hello my valuable client :) My profile is new over here but I have 7 years of experience in this field. I have completely understood about your project. Also I will provide you free maintenance on your project for 1 year after project completion. I can definitely complete this in your timeframe. Give me one chance to prove myself. Hit the chat button to get started. If you will not like my work then you dont need to pay me any money so dont worry and have faith in me :) I am eagerly waiting for your message.
₹25,000 INR in 7 days
4.3
4.3

Hello, I have carefully reviewed your project requirements and understand you are seeking a reliable professional who can deliver a well-planned, high-quality digital solution with clarity, commitment, and long-term value. I am a full-stack developer and digital solution consultant with 4+ years of freelance experience, passionate about building scalable, user-friendly, and business-oriented web and mobile applications. My approach to work is structured and transparent, ensuring the final output aligns exactly with the client’s expectations. Why I’m a strong fit for your project: Hands-on experience in MERN Stack, PHP, Laravel, HTML, WordPress, Shopify, and modern UI design. Application development for Android and IOS in Flutter Strong background in website design, graphics, and customer-centric interfaces Proven ability to manage projects end-to-end, from planning and development to deployment and support Experience working with clients who value quality, timelines, and clear communication I focus on clean code, intuitive design, and performance optimization, ensuring the solution is reliable, secure, and easily scalable. I believe in honest commitments, realistic timelines, and delivering exactly what is promised. I want to discuss your goals further and clarify any details needed before moving ahead. Thank you for your time and consideration. Looking forward to the opportunity to work together. Best regards, Arshiya
₹25,000 INR in 7 days
3.7
3.7

Hello, I can help stabilise your full-stack application and then extend it with new features while improving overall code quality. I have strong experience working across React (TypeScript), Node.js/Express, REST/GraphQL APIs, and API-driven systems, along with ERP-style platforms and complex backend workflows. Phase 1: Bug Fixing & Stabilisation • Fix frontend issues in React affecting user flows • Resolve backend bugs in Node.js/Express services • Trace API, state, and database issues to root cause • Stabilise all tracker-listed critical and minor bugs Phase 2: Frontend Improvements • Implement Figma-based UI updates • Improve component structure and reusability • Ensure cross-browser compatibility (Chrome, Firefox, Safari) Phase 3: Backend & APIs • Refactor or extend backend logic where needed • Build new REST/GraphQL endpoints • Ensure validation, error handling, and performance improvements • Maintain clean architecture and scalable design Phase 4: Documentation & Integration • OpenAPI/Swagger documentation for all endpoints • Integrate third-party services as required • Ensure smooth CI pipeline and deployment flow Quality Standards • No lint/test regressions • Maintain or improve coverage • Feature-branch workflow with PR reviews • Clean staging and production deployment I’m comfortable working across frontend, backend, and database layers to ensure both stability and long-term maintainability. Available to start immediately. Best Regards, JP
₹25,000 INR in 7 days
3.7
3.7

Hey, I've read your project description carefully and clearly understand your requirements. I have 5+ years of experience in full-stack development with React (TypeScript), Node.js/Express, and API development, handling bug fixing and scalable feature delivery. • Fixed critical bugs and improved stability across frontend-backend systems with clean refactoring • Built and documented REST/GraphQL APIs with OpenAPI and strong test coverage • Delivered seamless UI updates from Figma and integrated third-party services with CI/CD workflows I can stabilize your codebase, enhance features, and ensure smooth deployments with zero regressions. Regards, Jasraj Kaur
₹22,000 INR in 2 days
3.2
3.2

I’m a full-stack developer with solid experience fixing production bugs and improving React (TypeScript) and Node.js/Express applications. I can quickly identify and resolve issues across user flows, then move on to implementing new features, updating the UI based on your Figma designs, and extending backend logic with proper testing. I’m comfortable working with REST/GraphQL APIs, OpenAPI documentation, and integrating third-party services while keeping everything clean, maintainable, and aligned with your CI/CD pipeline. I follow structured GitHub workflows with feature branches and PRs, ensuring all changes pass tests, linting, and run smoothly across modern browsers before deployment.
₹16,500 INR in 3 days
3.4
3.4

Bengaluru, India
Payment method verified
Member since Jan 23, 2025
₹37500-75000 INR
₹1500-12500 INR
₹1500-12500 INR
₹1500-12500 INR
₹12500-37500 INR
₹600-800 INR
$10-30 USD
$30-250 USD
₹1500-12500 INR
$30-250 USD
₹750-1250 INR / hour
$250-750 NZD
$250-750 USD
₹12500-37500 INR
₹600-1500 INR
₹600-1500 INR
₹12500-37500 INR
$250-750 USD
₹12500-37500 INR
$1500-3000 USD
$15-25 USD / hour
₹1500-12500 INR
₹100-400 INR / hour
$15-25 USD / hour
₹1500-12500 INR