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I have a set of file-transfer web applications that were built with Claude and are already running in production, yet several core features are malfunctioning and the overall interface feels dated. Functionality fixes needed: • Users are unable to sign up or log in reliably, so authentication must be re-engineered and hardened. • Data-submission forms either fail validation or never reach the backend; they need to post correctly and surface friendly error messages. • Key pages should present stored files and status updates, but the information is missing or out of sync. • System-generated emails (account confirmation, transfer notifications, etc.) do not arrive, so SMTP or any transactional-mail service hookup has to be inspected and corrected. UI/UX improvements: The apps should feel cohesive and intuitive. I’d like smoother navigation flows, a modern visual refresh, and full mobile responsiveness. While at it, add a straightforward payment integration so users can upgrade transfer limits right from the interface. Acceptance criteria: 1. All four functional areas above work on staging and then live. 2. Navigation takes a user from upload → confirmation → download in no more than three clicks on desktop and mobile. 3. The refreshed design passes basic accessibility checks (WCAG AA for colour contrast). 4. Transactional mail delivers consistently (≥95 % success in logs). 5. Payment gateway processes a $1 test transaction and returns success/fail webhooks correctly. Stack details, repo access, and current deployment pipeline will be provided once we start. I’m happy to iterate quickly—show me incremental progress, and I’ll test immediately so we can push fixes live without downtime.
Project ID: 40387178
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172 freelancers are bidding on average $161 USD for this job

I understand that your file-transfer web apps need functional fixes like authentication, form validation, stored files display, and email delivery, along with UI/UX enhancements for smoother navigation and mobile responsiveness. Also, a payment integration is required. Once we discuss the full scope, the budget can be adjusted. I am confident in meeting your needs efficiently. Please review my 15-year-old profile for assurance of quality work. Let's discuss the details and get started.
$123 USD in 6 days
7.6
7.6

As a Graphic and Front-End Designer with over 8 years of experience, I am well-versed in your project's requirements. My skills in Adobe Photoshop, Illustrator, and Figma will allow me to re-engineer and modernize the user interface of your file-transfer applications with a fresh, intuitive design. I recognize the need for smooth navigation flows and mobile responsiveness, two elements that can significantly enhance user experience and engagement. Finally, working iteratively where I can present small but meaningful progress for consistent testing would help in instigating fast fixes without much downtime. I am customer-focussed professional who is committed towards your long-term success. Let's collaborate to create secure reliable file-transfer apps that promote growth in your business.
$100 USD in 7 days
7.1
7.1

Hi, I understand you need an experienced developer to stabilize and modernize your live file transfer apps by fixing the broken core flows first, then improving the interface and payment experience without disrupting production. The priority is restoring reliable authentication, form submission, file and status visibility, email delivery, and payment handling while making the apps feel cleaner, faster, and more intuitive across desktop and mobile. My approach would begin with a focused audit of the current codebase, staging setup, auth flow, backend endpoints, mail configuration, and payment hooks to isolate the root causes. I would then repair each broken workflow, improve error handling and data sync, refresh the UI for a more cohesive user journey, and ensure responsive behavior and accessibility compliance. I work incrementally, so you can review fixes quickly on staging before live release. Before delivery, I will test sign up and login, form posting, file and status rendering, transactional email delivery, payment and webhook handling, mobile navigation flow, and accessibility checks to ensure the updated apps are stable and production ready. Best, Justin
$140 USD in 7 days
6.1
6.1

Hi, I can fix the core backend issues in your file-transfer apps and modernise the UI without disrupting your current production setup. What I’ll fix • Rebuild and stabilise signup/login (authentication reliability + security) • Fix form submissions so data consistently reaches the backend with proper validation and clear error messages • Repair file/status syncing so uploaded files and updates display correctly • Restore transactional emails (SMTP/SendGrid/Mailgun) with logging and delivery verification UI/UX improvements • Modern, responsive redesign (mobile-first) • Smoother navigation with a clean interface refresh • Streamlined flow: upload → confirm → download in ≤3 clicks • WCAG AA contrast compliance • Add payment integration for upgrade/limits with working webhooks Deliverables • All fixes deployed on staging + production • Working email system (≥95% delivery success) • Successful $1 test payment with webhook validation • Improved responsive UI • Short documentation of changes I’ll work iteratively so you can test and approve each fix before going live. Best regards, Sushma
$110 USD in 7 days
6.2
6.2

Hi there, I understand you want to revamp a live file-transfer suite built with Claude, addressing authentication, form reliability, real-time data syncing, transactional emails, and a cohesive UI with mobile responsiveness and a built-in payment flow. I can deliver a solid, production-ready revamp with a phased approach that minimizes risk and keeps downtime to zero. Solution highlights: - Authentication overhaul: robust signup/login, passwordless options, rate-limiting, and secure session handling. - Reliable data submission: fix form validation, ensure backend posting, clear user-facing error messages, and retry-safe submissions. - Data consistency: synchronize file listings, statuses, and transfers across pages with a single source of truth; real-time or near real-time updates where feasible. - Email deliverability: diagnose SMTP/ transactional mail service integration, implement a resilient retry strategy, and ensure reliable delivery metrics. - UI/UX refresh: cohesive design system, responsive layout, accessible color contrast (WCAG AA-compliant), smoother navigation, and performance-focused frontend. - Payments: integrate a lightweight gateway for upgrading transfer limits with a test $1 transaction and webhook handling. Deliverables: - Staging environment with all fixes implemented and documented test cases. - Production rollout plan with feature flags and rollback steps. - Accessible UI refresh across desktop and mobile, with a 3-click flow for upload → confirmat
$190 USD in 3 days
5.8
5.8

Hello dear, Toriqul Global Solutions is a professional web design and development company dedicated to building modern, high-performance, and user-friendly digital solutions. Founded by Engineer Md. Toriqul Islam, a Computer Science & Engineering graduate from RUET, the company has over 10 years of experience delivering scalable and visually appealing websites. Web Design & Development: We are a full-stack web development team with strong experience. Our design approach is modern and simple, helping attract and engage users effectively. We have built websites for various industries and worked with many clients, delivering high-quality solutions. Client satisfaction is always our top priority. Technologies We Use: HTML5, CSS3, Bootstrap, JavaScript, jQuery, Angular, React, Node.js, WordPress, PHP, Laravel, .NET, CodeIgniter, Python, Ruby on Rails, MySQL, MongoDB. Why Choose Us: • Modern, clean, user-focused design • Fully responsive on all devices • Scalable and optimized code • Clean and well-documented work • On-time delivery • Clear communication • Client satisfaction first We have worked with clients across different industries, delivering websites that meet business goals and user expectations. Let’s build something great together. We are ready to discuss your project and start immediately. Best Regards, Toriqul Global Solutions
$120 USD in 5 days
5.4
5.4

Hello, I have experience fixing and updating web apps like yours. I will improve login and sign-up so they work better and are secure. I will fix forms so they submit correctly and show helpful error messages. I will make sure the pages show the right files and status updates. I will fix email setup so notifications send properly. I will update the design to look modern, be easy to use, and work well on phones. I will add a simple payment option for upgrades. I can start now, show progress quickly, and help you go live smoothly with no downtime. Thank you Azad
$140 USD in 7 days
5.6
5.6

Greetings, I'm a full stack developer with 10+ years of experience, I can fix and stabilize your file-transfer apps by reworking authentication, repairing form validation and backend flow, syncing data display, and resolving email delivery (SMTP/transactional setup). I’ll also modernize the UI/UX with responsive design and integrate a clean payment flow for upgrades. Let’s schedule a quick chat to discuss your preferred tech stack, timelines, and launch goals. I’m confident I can bring your vision to life. Best regards, Samar H.
$100 USD in 7 days
5.1
5.1

I can fix and modernize your existing file-transfer web applications tailored to your requirements, including features such as authentication repair, form validation fixes, backend data syncing, and transactional email restoration. The system will also include a UI/UX refresh with mobile responsiveness, improved navigation flow, and payment gateway integration for upgrading transfer limits. Best regards, Shawana
$80 USD in 3 days
4.8
4.8

⚠️ If you're not happy, you don’t pay. ⚠️ Hi, Thank you for checking my proposal and sharing the detailed project brief. I can rebuild and enhance your file-transfer web applications built with Claude using modern technologies, ensuring reliability and a sleek interface. I will deliver: • Robust authentication system with enhanced security measures • Seamless data submission forms with error handling • Fully functional pages displaying stored files and real-time updates • Meticulously configured SMTP or transactional mail services • Intuitive and cohesive UI/UX design with mobile responsiveness • Payment integration for user-friendly upgrades You will also receive detailed documentation and training to ensure smooth operations post-launch. I am confident I can execute your vision professionally and efficiently. Looking forward to discussing timeline and next steps. Best regards, Chirag.
$200 USD in 7 days
4.7
4.7

Subject: Proposal for Fixing Malfunctioning Features and Enhancing User Experience I understand the urgent need to address authentication reliability, form validation, missing data displays, and transactional email issues in your Claude-built web apps. Additionally, improving UI/UX and integrating a payment gateway for seamless user experience is crucial. My structured approach ensures precise results with transparent communication. I can start immediately, facilitate a smooth handover, and offer valuable insights, even if you select another provider. Could you clarify the top priority issue for immediate resolution? Kind regards, Melissa Pringle
$150 USD in 7 days
4.8
4.8

Hello, I am Vishal Maharaj, a seasoned professional with 20 years of experience in Web Development, API Development, Backend Development, Claude (Anthropic), Claude Code, Graphic Design, and UI/ User Interface. I have carefully reviewed your project requirements and am confident in providing a comprehensive solution. To revamp the live file-transfer apps, I will prioritize re-engineering and securing the authentication process, ensuring correct data submission and error handling, syncing stored files and status updates, and fixing the email delivery system. Additionally, I will focus on enhancing the UI/UX by improving navigation flows, modernizing the visual design, and ensuring mobile responsiveness. Integration of a payment gateway for user upgrades will also be implemented. Please initiate a chat to discuss the project further. Cheers, Vishal Maharaj
$250 USD in 5 days
5.0
5.0

Hello, I came across your project and it immediately caught my attention. We went through your project description and it seems like our team is a great fit for this job. I create clean, modern designs that instantly grab attention and communicate your brand professionally across all platforms. Please come over chat and discuss your requirement in a detailed way. Best regards, Khadija Amin freelancer.com/u/khadijaamin9
$80 USD in 3 days
4.8
4.8

Hi Ahmed, I’ve reviewed your existing file-transfer applications and understand the issues are mainly around broken authentication, unreliable form submissions, data sync inconsistencies, and failed transactional email delivery, along with a UI that needs a modern refresh and better flow. I’ve worked on similar production debugging projects where I re-engineered auth systems, fixed backend form pipelines, restored data consistency, and stabilized SMTP/transactional services to reach reliable delivery rates. I can also improve the UX with a cleaner, responsive interface and integrate a simple payment flow for upgrade limits while ensuring the upload → confirmation → download journey stays fast and intuitive. I’ll work incrementally with staging updates so you can test fixes in real time and safely push to production without downtime. Looking forward for your positive response in the chatbox. Best Regards, Arbaz N
$210 USD in 7 days
4.9
4.9

Hi There!!! ★★★★ ( Fix auth, forms, emails + modern UI revamp with payment integration ) ★★★★ I understand your live file-transfer apps have issues with login/signup, broken forms, missing data sync, and email delivery, along with outdated UI. You need stable functionality plus a modern, responsive redesign with smooth user flow. ⚜ Fix authentication & session handling ⚜ Debug forms & backend API sync ⚜ Restore file data display & status updates ⚜ SMTP/email delivery setup & testing ⚜ UI/UX redesign with mobile responsiveness ⚜ Payment gateway integration + webhooks ⚜ Accessibility & performance improvements I have strong exp fixing production apps, especially auth, APIs and email systems. I enjoy cleaning messy flows and making apps stable and user friendly. My approach is audit → fix core bugs → redesign UI → integrate payments → test on staging before live push, ensuring no downtime. Let’s discuss repo access and priorities, ready to start immediatly and iterate fast. Warm Regards, Farhin B.
$110 USD in 7 days
5.2
5.2

Hey , I just went through the project description, and I see you are looking for someone experienced in Claude Code, Backend Development, Frontend Development, Graphic Design, Web Development, User Experience Research, Cloudflare, Claude (Anthropic), API Development and UI / User Interface. It instantly reminded me of a client who faced similar challenges, and I knew I had a tailor-made solution for it. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: • Is there anything else you’d like to add to the project details? • What’s the top hurdle you’re facing with this project? • What is the timeline to get this done? Why Choose Me? 250+ Projects. 5 Years. Zero Misses. My reputation is built on a single metric: Flawless Execution. While others promise quality, my last 100+ consecutive 5-star reviews prove it. I don’t just finish the job; I set the standard. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) The portfolio here is just the tip of the iceberg. To respect client confidentiality, my recent heavy-hitters aren't public, but I can share them 1-on-1. Click the 'CHAT' button, and I’ll send over the relevant samples immediately for your review. Regards, Abdul Haseeb Siddiqui.
$30 USD in 5 days
5.0
5.0

I checked your 4 problems and will help you to fix all them successfully. Kindly contact me to get success result.
$500 USD in 5 days
4.7
4.7

✋ Hi There!!! ✋ The Goal of the project:- FIX CORE FUNCTIONAL ISSUES AND REVAMP FILE TRANSFER APPS WITH MODERN UI AND RELIABLE PERFORMANCE. I have carefully reviewed your requirements including broken authentication, form failures, missing data sync, email delivery issues, and the need for a clean modern interface with payment integration. I am a strong fit because I specialize in debugging live systems and turning unstable apps into reliable and scalable platforms. • Rebuild secure authentication and fix form submission with proper validation and backend sync • Restore file data flow, status tracking, and reliable transactional email delivery • Redesign UI for smooth navigation, mobile responsiveness, and integrate payment gateway I will also provide UI design improvements, database management, testing, API fixes, and full source code delivery with deployment support. I bring 9+ years experience as a full stack developer and have fixed and upgraded similar production apps and file systems. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$111 USD in 11 days
4.8
4.8

Hi, I can fix the authentication instability, broken form submissions, missing data sync, and email delivery issues affecting your file-transfer apps. I’ll rework auth flows, validate backend integrations, and stabilize SMTP/transactional email so everything functions reliably end-to-end. Alongside a modern UI refresh with mobile responsiveness and payment integration, are you currently using a specific SMTP provider and payment gateway I should align with? I’m available to start immediately and can work iteratively with fast staging updates. Best Regards, Fizza Nadeem K
$140 USD in 7 days
4.9
4.9

Hi, There is strong interest in the project and full support can be provided to ensure its successful progress. I fully understand your goals and the direction of this project. My focus will be on accuracy, quality, and efficiency throughout the process. I am committed to delivering an outcome that meets and exceeds your expectations. I have about 6 years of experience as a senior software engineer, working full-time across several companies and delivering many successful projects. I’m confident that if I take on your project, I can guide it smoothly and deliver the best possible result. If there are any details that aren’t fully clear yet, we can go through them together and make sure everything is aligned so I can deliver exactly what you’re looking for. If you’re looking for the best results, I would truly appreciate the opportunity to work on your project. By consistently delivering high-quality work and meeting deadlines, my goal is to support and strengthen the foundation of your business for the long term. I’d like to clarify your requirements and confirm my understanding through a quick conversation. Once everything is clear, I can get started right away and keep communication smooth, especially with the time zone difference. I’d also appreciate it if you could take a moment to review my profile and feedback. I’m confident I can deliver results that exceed your expectations, and I’m fully ready to get started. best regards, Dax M
$150 USD in 1 day
4.3
4.3

Abu Dhabi, United Arab Emirates
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