
Em Andamento
Publicado
Several internal web apps power our day-to-day operations, all built with React. I need a reliable developer who can slot into the existing workflow and keep velocity high as new features roll out. Current focus • Polish and extend the UI so every screen feels intuitive and on-brand. • Wire up new and existing REST/GraphQL endpoints, handling all API integration details and edge cases. How we’ll work The codebase lives in GitHub, tasks are tracked in Jira, and pull-requests go through a quick review before merge. I’ll assign small, well-scoped tickets first so we can establish rhythm; from there the stream of work is steady. Communication happens in Slack, and I’m always available to clarify requirements. Deliverables for each ticket 1. React components or hooks that follow the project’s styling and naming conventions. 2. Integrated API calls with proper error handling and optimistic UI updates when relevant. 3. Passing unit tests and a brief PR description outlining decisions made. Acceptance criteria are simple: the feature matches the design file, data flows correctly from the backend, and no existing tests break. If you enjoy iterative UI/UX refinement and cleanly architected data flows, you’ll fit right in.
ID do Projeto: 40176069
101 propostas
Projeto remoto
Ativo há 1 mês
Defina seu orçamento e seu prazo
Seja pago pelo seu trabalho
Descreva sua proposta
É grátis para se inscrever e fazer ofertas em trabalhos

I’m a React developer with solid experience maintaining and extending existing production codebases. I’m comfortable jumping into established workflows and keeping momentum high while new features ship. My focus is clean, intuitive UI that stays consistent with existing branding and conventions. I regularly work with REST and GraphQL APIs, handling edge cases, loading states, error handling, and optimistic UI updates so the app feels fast and reliable. I’m used to GitHub-based workflows with PR reviews, Jira tickets, and async communication via Slack. I appreciate well-scoped tasks and take care to deliver polished components, clear PR descriptions, and passing unit tests. I work independently, communicate clearly when clarification is needed, and aim to be a low-friction, dependable addition to the team. Happy to start with a small ticket and build rhythm from there.
$12 USD em 40 dias
0,0
0,0
101 freelancers estão ofertando em média $16 USD/hora for esse trabalho

Hello, I’m ready to support your React apps and keep velocity high as features roll out. I’ll slot into your GitHub/Jira workflow, polish UI to be intuitive and on-brand, and wire up REST/GraphQL endpoints with robust error handling and optimistic updates where suitable. For each ticket I’ll deliver: React components or hooks that follow your conventions, integrated API calls with clear error handling, and passing unit tests with a concise PR description. I’ll start with small, well-scoped tasks to establish rhythm and then maintain a steady stream. I’ll communicate via Slack and fit your quick PR review process, while ensuring acceptance criteria—design match, correct data flow, and no test break—are met. What is the current API contract for the REST/GraphQL endpoints and what is the expected error handling strategy? How do you define 'on-brand' UI across apps? Is there a design system or tokens to follow? What is the preferred approach for optimistic UI updates for create/update operations in this app? How should we handle feature flags or rollout strategy for new changes? What is your testing strategy and preferred test coverage for new tickets?
$25 USD em 37 dias
7,6
7,6

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in Node.js, Frontend Development, API Integration and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
$25 USD em 5 dias
6,5
6,5

Hello, I’d be happy to jump into your React apps and help keep things moving smoothly. I can clean up and extend the UI so everything feels intuitive and on-brand, and handle REST or GraphQL integrations with solid error handling and clean data flow. I’m comfortable working with GitHub, Jira, pull requests, and Slack, and I’m used to picking up small tickets and building momentum quickly. Are you using a specific UI library or testing setup that I should follow from the start? Looking forward to discussing further. Best regards, Kamran
$15 USD em 40 dias
6,5
6,5

Hello, I have carefully analyzed your requirements for supporting and extending internal React-based web applications within an established workflow. I recently worked on a similar long-term engagement where I joined an existing React codebase, polished UI components to match brand guidelines, and integrated REST and GraphQL endpoints while maintaining high delivery velocity through GitHub, Jira, and structured PR reviews. Your project requires clean, intuitive UI updates and reliable API integrations. I will build React components and hooks that follow your naming and styling conventions, handle REST and GraphQL integrations with proper error handling and optimistic updates, and ensure all changes are covered by passing unit tests with clear PR summaries for fast reviews. I am available to begin work immediately and am committed to delivering high-quality features quickly while fitting seamlessly into your existing workflow. Best regards, Elenilson
$12 USD em 40 dias
5,8
5,8

Hello, I’m an experienced React developer and can seamlessly integrate into your workflow to polish UI/UX and connect API endpoints for your internal web apps. I specialize in clean, maintainable code, iterative feature delivery, and seamless API integration. How I can contribute: Build and refine React components/hooks following your existing styling and naming conventions. Connect REST and GraphQL endpoints with proper error handling, edge case management, and optimistic UI updates where appropriate. Deliver unit-tested, production-ready code with clear PR documentation outlining decisions and implementation details. I’m comfortable working with GitHub, Jira, and Slack, and I thrive in iterative environments with well-scoped tickets. My focus is on ensuring UI matches design, data flows correctly, and no existing functionality is broken. I enjoy refining user interfaces while maintaining clean data architecture, making me a strong fit for ongoing feature development in your React apps. Best regards,
$12 USD em 40 dias
5,6
5,6

Hi there! I understand you're looking for a reliable developer to enhance your React web apps and keep the momentum going with new features. I have extensive experience with React, having successfully delivered several projects involving REST and GraphQL integrations, ensuring a seamless user experience and adherence to branding. ✔My Plan: - Collaborate closely with your team via Slack for clear communication. - Hit the ground running by tackling well-scoped tickets first and adapting to the existing workflow. - Implement intuitive React components and hooks, ensuring they match project conventions and are rigorously tested. - Seamlessly wire up API calls with the necessary error handling and user feedback. I'm excited about the prospect of joining your team and contributing to the continuous improvement of your internal applications. Regards, Davide
$50 USD em 7 dias
4,8
4,8

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project — Ongoing React Web App Support . I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan
$40 USD em 40 dias
4,9
4,9

As an experienced Full-Stack Developer, specializing in React and Node.js, I can ensure that your apps not only run smoothly, but also have UIs that are intuitive and consistent with your brand. Having worked on several projects with similar requirements to yours including wire-up works for REST/GraphQL endpoints, I feel confident that I can handle the necessary API integration details and related edge cases effectively. Your methodology closely aligns with my own working style - from Jira task tracking to pull request reviews on GitHub. My expertise with cloud platforms like AWS and Docker offers added value to your project, as does my focus on clean and maintainable code along with exhaustive testing. Additionally, my skills as a biostatistician extend beyond just software development. They add another layer of expertise concerning data-driven applications which could prove beneficial for your organization. My strong communication skills paired with deadline-driven delivery will keep you informed throughout the process and help us meet your project's demands efficiently.
$15 USD em 40 dias
4,8
4,8

Dear Client, I am excited about your project "Ongoing React Web App Support" and confident I can deliver excellent results. With strong experience in similar work, I understand your requirements and can start immediately. I would love to discuss your project further and answer any questions. Thanks and best regards, Faizan
$18 USD em 40 dias
4,5
4,5

Hi there, I’ve read your Ongoing React Web App Support brief and I can slot into your GitHub/Jira workflow to keep feature velocity high as new work rolls out. I will polish UI to be intuitive and on-brand, wire REST/GraphQL endpoints with robust error handling and optimistic updates, and deliver React components and hooks with tests and concise PR notes; I’ll start with small, well-scoped tickets and target a 1-day turnaround per item, keeping you updated via Slack and Jira. Best regards,
$50 USD em 34 dias
4,0
4,0

Hi there, I'm Kristopher Kramer from McKinney, Texas. I’ve worked on similar projects before, and as a senior full-stack and AI engineer, I have the proven experience needed to deliver this successfully, so I have strong experience in API Integration, Frontend Development and Node.js. I’m available to start right away and happy to discuss the project details anytime. Looking forward to speaking with you soon. Best regards, Kristopher Kramer
$30 USD em 40 dias
4,6
4,6

With over 12 years of experience as a full-stack software engineer, I have honed my skills in a wide range of technologies like ReactJs, NodeJs, PHP, Laravel, Vue js and many more - all of which are perfectly aligned with your project's requirements. I have extensive experience building and refining web apps with iterative UI/UX refinement and cleanly architected data flows, which makes me the ideal candidate for this role. Given my flexibility and ability to work within your existing workflow using Jira, Github and even utilizing quick review procedures before merging any pull requests, I am confident in my capacity to slot right into your team and maintain high velocity as we rollout new features. One crucial aspect of my work style that really sets me apart is my stringent approach to ensuring that all deliverables meet the project's design file, the data flows seamlessly from the backend and no existing tests break - the precise acceptance criteria you set out. Additionally, I rely on clear communication via Slack which works perfect as it aligns with you communication preferences. Lastly, but not least significantly - I am absolutely committed to your project's success. This means guaranteeing both quality code that meets strict deadline policies and a high-level service throughout our collaboration. So if you're looking for an experienced professional with a passion for clean code working in tandem with on-time delivery, then please don't hesitate to hire me.
$12 USD em 40 dias
4,1
4,1

Hello, As a full-stack engineer with extensive experience in React and Node.js spanning eight plus years, I'm confident that I can offer you the high-level support your project needs. Having previously built production web platforms with similar requisites throughout my career, I am familiar with the intricacies of merging new features seamlessly into an existing workflow. In addition to my proficiency in React and Node.js, I specialize in Ethereum and L2 rollups- this puts me in a unique position to deal with data-heavy apps and their backend integration. My past clients often praised me for my strong attention to detail and my commitment towards delivering clean (keeping your codebase tidy), maintainable solutions. I believe this aligns perfectly with your need for intricate UI/UX refinement and clean data flows. Moreover, my thoroughness extends to even the most mundane tasks such as writing descriptive pull request (PR) messages or ensuring proper error handling. As a professional committed to delivering quality work, every aspect of your project's requirements including styling, naming conventions, error handling or optimistic UI updates would be met diligently. This coupled with my ability to effectively communicate through platforms like Slack would make for a seamless work relationship where we could iterate through the various tasks ensuring accurate implementation of the design files while maintaining consistent velocity. Thanks!
$50 USD em 22 dias
3,9
3,9

We've just completed a similar project. I recently helped a client extend and polish multiple internal React apps while integrating REST and GraphQL endpoints, and I will help keep your workflow high-velocity with clean, maintainable code. You won't find someone better aligned with what you're looking for. I understand you need UI refinement, well-structured React components and hooks, seamless API integration, proper error handling, and passing unit tests. I’m experienced with GitHub, Jira, and Slack workflows, and I focus on iterative feature development that matches designs, ensures reliable data flows, and keeps existing functionality intact. I'd love to chat about your project! The worst that can happen is you walk away with a free consultation. Regards, Danie.
$8 USD em 40 dias
3,9
3,9

As the CEO of Web Crest, I've lead a 10-member team specializing in MERN stack development and API integrations. Our experience aligns perfectly with your project needs: polishing and extending UI, integrating REST/GraphQL endpoints, and handling all API integration intricacies. In working on your project, we will commit to delivering React components following your styling/naming conventions, integrated API calls with thorough error-handling mechanisms, along with passing unit tests. Transparency is our top priority. We are accustomed to using tools like GitHub and Jira for codebase management and task tracking respectively – a protocol that you've already established in your workflow. You can trust our ability to quickly adapt to new projects and deliver structured, high-quality code each time. With over a decade of experience in the field, we understand the importance of efficiency and continuous improvement – elements that have enabled us attain a 98% project completion rate with top ratings. The flexibility you're offering in terms of well-scoped tickets will lend itself well to establishing a smooth rhythm to maximize our collaboration potential. Let's connect via Slack, operate through Jira, and communicate transparently just as you've indicated for a seamless execution of this project!
$12 USD em 40 dias
3,4
3,4

Hello I offer expert, ongoing React web app support, ensuring your critical internal applications consistently power your day-to-day operations with reliability and efficiency. My proactive maintenance and rapid problem-solving will keep your business running smoothly. Let's discuss optimizing your essential tools for seamless performance. Giáp Văn Hưng
$19 USD em 7 dias
3,9
3,9

Hello Johnathan, I understand your needs. I am an expert with 8 years of experience in Frontend Development and I helped many clients reach their goals. Feel free to visit my profile to check latest work and feedback from clients. If you like my approach, please connect in chat. Thank you, Bwalya
$12 USD em 40 dias
3,4
3,4

Hello, This is exactly the kind of environment I work best in. I’m comfortable stepping into an existing React codebase, following established patterns, and keeping momentum high while features ship iteratively. I focus on clean, intuitive UI refinements that stay aligned with the design system, and I’m very hands-on with REST and GraphQL integrations, including edge cases, loading states, and optimistic updates. I’m used to working with GitHub, Jira, and PR-based workflows, and I communicate clearly in Slack to unblock things fast. Starting with smaller tickets to establish rhythm makes perfect sense, and I’m happy to scale up once we’re aligned. You can expect well-structured components/hooks, solid API handling, and PRs that are easy to review and merge without surprises. If you’d like, I can jump in quickly and knock out an initial ticket to show fit.
$12 USD em 40 dias
3,5
3,5

Hi there, Good morning I am Talha. I have read you project details i saw you need help with API Integration, Frontend Development and Node.js I am excited to submit my proposal for your project, which focuses on a comprehensive project plan. To begin, we will thoroughly understand your project's objectives and requirements, ensuring alignment on scope and goals. We will provide a clear and realistic project timeline with manageable milestones to ensure timely completion Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan
$25 USD em 28 dias
3,0
3,0

Hi there, We can assist you in providing ongoing support for your React web apps, ensuring a seamless integration of new features and maintaining a high level of productivity. Our team at DexWolf Technologies has a strong background in React development and can easily adapt to your existing workflow. Questions: 1. Are there any specific design guidelines or branding elements that we should follow when polishing and extending the UI of the web apps? 2. Could you provide more details about the structure of the REST/GraphQL endpoints that need to be wired up for API integration? DexWolf Technologies has extensive experience in React development, UI/UX refinement, and API integration. We are well-versed in working with GitHub, Jira, and Slack for seamless collaboration and communication. About Us: https://www.freelancer.com/u/dexwolftech999 We'd be happy to share our portfolio and discuss how we can support your ongoing React web app development. Feel free to click the chat icon to connect with us for further details. Thanks, DEX
$12 USD em 40 dias
3,0
3,0

Stockholm, Sweden
Método de pagamento verificado
Membro desde jan. 24, 2026
$25-50 USD / hora
$30-250 CAD
$30-250 USD
₹100-400 INR / hora
₹1500-12500 INR
₹100-400 INR / hora
₹1500-12500 INR
₹600-1500 INR
$250-750 USD
₹75000-150000 INR
$750-1500 USD
£250-750 GBP
$250-750 USD
$3000-5000 USD
$30-250 USD
$30-250 USD
₹37500-75000 INR
₹12500-37500 INR
₹12500-37500 INR
$25-50 USD / hora