Senior Full-Stack Developer for 10-Day Sprint -- 2

@webbookstudio

Hi there, We understand you need a senior full-stack developer to complete and launch Rally, a web-based operating system for college events and nightlife, within a tight 10-day deadline. You've already developed the product and codebase, and now require someone to connect the frontend and backend, implement authentication, event management, and other key features. With our 17 years of experience in web development and a strong background in modern React/JavaScript, PHP, and backend/database/API development, we're confident in our ability to deliver a stable and working launch. Our team has worked on similar projects, such as a learning platform website for children and an e-commerce site for a luxury leather retailer, showcasing our expertise in full-stack development. What's your plan for handling potential roadblocks or unexpected issues that may arise during the sprint, and how would you like us to prioritize tasks to ensure a successful launch? Feel free to message us to discuss the details! — Webbook Studio

@shivmirthyusl

Hi, With nearly two decades of experience in web and mobile app development, my team at IT Flex Solutions India has the technical prowess and the industry knowledge to take your project from where it stands now to a successful and revenue-generating MVP. Having successfully completed 483+ projects like yours, even as we operate remotely, we are no strangers to providing invaluable contributions as part of a tight deadline. Our daily presence throughout this intensive 10-day sprint means you get both a full-time commitment and consistent updates on our progress. At IT Flex Solutions India, we always value the work put in prior to ours. We understand that your existing codebase requires an experienced hand to build upon it effectively. With countless projects involving inheriting and completing existing codebases under our belts, we are confident we can deliver according to your expectations. Our versatile skillset in HTML, JavaScript, PHP, Laravel - dovetail with the technology listed as needed for this project - will ensure the much-needed stability and interconnectivity your platform requires. Thanks, SBM

@irsolutions

With over a decade of experience in full-stack architecture and high-scale systems, I understand the urgency of your project to finish and launch Rally, a web-based operating system for college events and nightlife. My background in scaling Telegram Mini Apps to over 1 million users directly applies to the fast-paced nature of your 10-day sprint. A strategic insight for ensuring scalability and speed in the project is to prioritize efficient code structure and daily Git commits to track progress. My past success in handling high-complexity systems aligns with the challenges of completing and connecting the frontend and backend, as well as implementing authentication, event management, and payment systems. I encourage you to take action by contacting me to discuss the roadmap for your project. I am available heavily for the next 10 days, possess strong React/JavaScript web development and backend/API experience, and am committed to personally performing the work to ensure a successful launch within your timeframe. Let's collaborate to make your project a reality.

@a4logic

Hi, I can join the 10-day sprint immediately and work directly on the existing Rally codebase to get the MVP production-ready. I have 15+ years of full-stack development experience, including React/JavaScript, APIs, databases, authentication, payments, dashboards, ticketing workflows, bug fixing, and taking inherited projects through launch. Availability: 8–10 hours daily for the next 10 consecutive days Time zone: Pakistan (UTC+5), and I can maintain the required Eastern Time overlap Yes, I have extensive experience inheriting existing codebases, auditing them quickly, fixing incomplete workflows, and shipping production releases. Fixed Price: $2,500 USD I confirm that I will personally perform the work with no subcontracting. I can provide daily Git commits, daily deployed progress, and focus first on the critical end-to-end path: auth → events → tickets → payments → QR/check-in → admin → deployment. I’m ready to start with the repository audit immediately. Best regards, Yasir Shah

@ykarora26

With extensive senior full-stack experience and a proven track record in React and backend development, I'm well-equipped to seamlessly integrate and elevate Rally's existing web-based operating system. How about setting up a quick call to discuss the specific features and functionalities that need immediate attention to ensure a successful 10-day sprint launch? Regards, Yogesh Kumar

@diektech

Hi — Elias here from Miami. I understand you're looking to complete and launch Rally during an intensive 10-day sprint. This is a critical phase, and I can appreciate the urgency of getting everything right. The real challenge often lies in ensuring the system is not only functional but also scalable and maintainable as it grows. Integrations and workflows can quickly become complex, and managing state effectively is crucial. What usually matters most here is creating a stable environment that can handle future expansions without significant rework. My approach would be to set up a clear structure focusing on modularity and reusable components. This way, we can ensure that each piece interacts smoothly and is easy to maintain. I’ve worked on similar platforms where quick launches were essential, so I understand the need for a solid foundation. A few questions to better understand the scope: Q1 – What user roles and permissions will be necessary for Rally? Q2 – Are there any specific integrations you foresee needing right at launch? Q3 – What are your scaling expectations as user traffic increases? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.

@tangramua

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 PHP, JavaScript, HTML, AngularJS, Web Development, Full Stack Development, Backend Development, Frontend Development, API Development, Software Engineering 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.     

@Rapha

Hello, my name is Rafael. I’ve worked on full-stack React/JavaScript applications involving authentication, role-based access, REST APIs, databases, payments and production deployment, and I’m comfortable taking over an existing codebase rather than rebuilding working components. For Rally, I’d treat the 10 days as a launch sprint: first reproduce the current build and identify blockers, then prioritize the critical path from authentication through event creation, organization dashboards, ticketing, QR check-in and payments. Admin functionality, notifications, mobile responsiveness and launch-critical bugs would be integrated around that flow, with production stability taking priority over unnecessary refactoring. I can work directly from your repository, workflows and UI mockups, with daily Git commits and a working deployment/demo each day so progress remains visible. I personally perform the development and can communicate in English throughout the sprint. I’m available to start immediately and commit heavily across the full 10 consecutive days. Proposed fixed price: $3,500, subject to a quick review of the repository and confirmed launch scope. I can provide relevant live applications and code samples through Freelancer for review.

@onkarkulkarni8

Hello, I your "Senior Full-Stack Developer for 10-Day Sprint -- 2" project description in detail and undertood your requirements. I've worked on many PHP projects in recent times. So I am confident on achieving your expected Goals. Please initiate a communication thread to discuss further and start with the project. ⭐ 5.0/5 from a recent client: "Project was delivered before Time with Best professional Knowledge One could ever held. Thanks for the support" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.

@Hammadhassan21

Hey, I’ve carefully reviewed your project, and I understand you need a senior full-stack engineer who can quickly step into an existing codebase and help launch Rally within a focused 10-day sprint. I can help complete the remaining development work while prioritizing stability, performance, and a smooth production release. I will handle frontend and backend integration, authentication, user roles, event workflows, dashboards, ticketing, QR check-in, payments, notifications, database connectivity, responsive improvements, bug fixes, and deployment. My focus is delivering a reliable MVP with consistent communication, daily progress updates, and clean implementation. I have hands-on experience with similar production full-stack applications and would be happy to share relevant examples during our discussion. One quick question: What framework and backend architecture is Rally currently using, and which features are considered critical blockers for the 10-day launch? Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best Regards, Hammad Hassan

@doomshellsl

Hello, A 10-day sprint is not the time for experimentation—it’s about entering the existing codebase, identifying what is blocking launch, and executing against a tightly prioritized plan. That is exactly how we would approach Rally. At Doomshell Software Pvt. Ltd., we bring 14+ years of experience in full-stack development, production web applications, API integrations, authentication, dashboards, payment workflows, and deployment. We can take ownership of the remaining launch-critical work, including: • React/JavaScript frontend and backend integration • Authentication, roles, and organization dashboards • Event creation, ticketing, QR check-in, and payments • Admin workflows, notifications, APIs, and database connectivity • Mobile responsiveness, bug fixing, testing, and production deployment • Daily Git commits, working demos, and clear progress reporting We understand that Rally already has its product direction, repository, workflows, and UI designs. Our priority will be stability and a working launch, not unnecessary refactoring or rebuilding completed components. We can commit focused development resources throughout the 10-day sprint and are open to continuing post-launch development if the collaboration is successful. Let’s schedule a quick 10–15 minute call to review the current codebase, remaining features, and launch blockers. We can then map the 10-day sprint into clear priorities and milestones. Best Regards, Doomshell Software Pvt. Ltd.

@corpmember29

Hi, I understand Rally is an existing web platform and the immediate goal is to complete, connect, test, and launch a stable MVP within an intensive 10-day sprint. I can take ownership of the existing codebase and focus on: * React/frontend and backend/API integration * Authentication, roles, onboarding, and dashboards * Events, venues, organizations, artists, and booking workflows * Ticketing, QR check-in, attendance, and capacity tracking * Payments, webhooks, refunds, and payout workflows * Notifications, admin controls, reporting, and logs * Database integration, responsive UI, bug fixing, testing, and production deployment My approach will start with a rapid repository audit to understand the current architecture, identify blockers, prioritize launch-critical workflows, and then work through them continuously with daily commits and a deployed demo. I have 13+ years of full-stack development experience and strong experience inheriting, completing, debugging, and launching existing production codebases. Availability: I can commit heavily for the full 10-day sprint with daily progress and Eastern Time overlap I personally perform the development work and do not subcontract it. I’m ready to review the repository, product scope, and launch priorities immediately and begin with the highest-risk end-to-end workflows. Best regards, Christina

@alihassan321

I’m a senior full-stack developer with 10+ years of experience, and I’m comfortable taking over existing codebases, understanding the architecture quickly, and delivering under tight deadlines. I can work intensively for the full 10-day sprint and handle the frontend/backend integration, authentication and roles, event management, dashboards, ticketing and QR check-in, payments, notifications, database/API work, responsive fixes, bug resolution, and production deployment. My focus would be on getting Rally into a stable, production-ready state rather than over-engineering the MVP, with daily Git commits and working demos so you can clearly track progress. For the complete 10-day sprint, my proposed fixed price is $3,500. I can start immediately and dedicate substantial availability throughout the sprint. I’ll personally handle the development without subcontracting and can quickly adapt to the existing stack and workflows once I review the repository and scope. At the beginning, I would prioritize the launch-critical features, identify any blockers, and establish a clear 10-day execution plan so we can maximize the chances of a successful production launch within the deadline.

@webbookstudios

Hi there! I'm Markiyan, a full stack developer and CEO of a web agency, and I'm excited to help you launch Rally, a web-based operating system for college events and nightlife, within this intensive 10-day sprint. I understand that I'll be working with an existing codebase, completing and connecting the frontend and backend, and implementing various features such as authentication, event management, and payments. My experience with modern React/JavaScript web development, backend/database/API, and shipping real production applications makes me a strong fit for this project. I've worked on similar projects, including a learning platform website for children and a website for an electric bike company, both of which involved complex frontend and backend integration. My team and I have completed 500+ projects with a 5.0 rating on Freelancer across 10+ years of work. I can deliver a stable, working launch of Rally within the given deadline, prioritizing a successful MVP sprint over unnecessary engineering perfection. I'm available to start immediately and will be heavily available for the next 10 consecutive days. One question: what is the current state of the existing repository, and are there any specific areas of the codebase that need immediate attention? Feel free to message me to discuss the details!

@elishadiah326

Hi, Thank you for posting the good task! Your project is exactly the kind of fast-paced MVP sprint I enjoy. I have strong full-stack experience working with existing React applications and backend APIs, and I'm comfortable taking ownership to deliver a stable production launch under tight deadlines. I carefully reviewed your requirements, including completing the frontend and backend integration, authentication and user roles, event management, organization dashboards, ticketing with QR check-in, payments, admin features, notifications, database integration, responsive UI, bug fixing, and production deployment. I also understand the importance of daily Git commits, daily working demos, and personally handling all development without subcontracting. I have experience shipping production-ready web applications, troubleshooting complex codebases, and delivering high-quality results while maintaining clear communication throughout the project. Available to start immediately and dedicate full-time effort for the next 10 consecutive days. I have one question: - What is your current technology stack (React framework, backend, database, and hosting platform)? Best regards, Diah

@zainalitariq245

Hi, I understand you need a senior full-stack engineer to join a 10-day sprint and help complete and launch Rally, an existing web-based platform for college events and nightlife. Since the product and codebase are already in place, the focus is on quickly understanding the current system, completing missing features, fixing issues, and getting a stable MVP into production. I will work directly with your existing repository, handle frontend and backend integration, authentication, roles, event workflows, organization dashboards, ticketing, QR check-in, payments, admin functionality, notifications, database integration, responsive improvements, testing, and deployment. I’m comfortable working inside existing codebases, taking ownership, and delivering daily progress with clean Git commits and working demos. Here, you can review my previous work as an experienced professional: https://www.freelancer.com/u/zainalitariq245 I can dedicate my availability for the next 10 days, personally handle the development, and start immediately after reviewing the repository and project priorities. Let's discuss further. Thanks.

@durgesh8527

It's a pleasure to meet you! As a seasoned full-stack developer with a dedicated team, my forte lies in not just developing robust software but also optimizing its performance, maintaining it effectively, and ensuring impeccable architecture. I possess extensive experience using the core technologies needed for this project, including React, Node.js, and PHP. My proficiency extends similarly across the back-end components such as database integration and API development with services like Stripe and Twilio. To give you a tangible affirmation of my abilities, I've created several live applications that I would love to showcase once we connect. Be it your requests for authentication management, event creation, ticketing system implementation, or even your demand for QR check-ins, I have traversed all these in my past projects successfully. And yes! - I am familiar with working within existing codebases, which facilitates rapid yet clean work.

@asifkhanswati

I am interested in this Rally sprint. It matches what I do best. I recently took over the Nula Move platform halfway through development. It was a mess. Inconsistent state, broken API calls, no tests. I audited everything, rewired the React frontend, fixed the Node backend, integrated Stripe, and launched it in two weeks. It has handled over 2,000 bookings since. That experience of inheriting a codebase and pushing it across the finish line is exactly what this needs. For Rally, I would start by getting the code running locally and mapping out what works and what does not. Then I would tackle the launch priorities in order. Authentication first. Then event management and ticketing. Then payments and notifications. Admin stuff last. I would deploy daily so you see progress. I am an individual developer. No agency, no team. Just me. I can start immediately and work heavy for 10 days. My time zone is Central European but I can overlap with Eastern Time for 4 to 5 hours daily. My price is $3,000 fixed. I understand payment comes after first revenue and I am okay with that as long as we have a clear contract. I have built production platforms for real estate and logistics. I can share GitHub samples and references. I am ready to start as soon as you are. Let me know.

@softwarelinkerrs

As the founder and lead developer of SoftwareLinkers, I am well-attuned to the demands of fast-paced development and have an excellent track record in meeting deadlines without compromising quality, making me a perfect fit for your 10-day sprint. Drawing from over a decade of senior full-stack experience, I am comfortable adapting to existing codebases, ensuring efficient workflow with minimal hand-holding. I specialize in PHP and MySQL backend development for scalable and data-driven web applications, as well as RESTful API development and integration with mobile and web platforms—all of which are pivotal in completing Rally. In addition, my expertise extends into React.js, a crucial skill that will enable us to effectively connect front-end and back-end components for a seamless user experience. When it comes to real production applications, I’ve built numerous systems that align with varying functions—notably in industries such as Education & eLearning, Insurance & Finance and Corporate & Enterprise platforms. By incorporating AI-powered features and system integrations on top of our secure and future-ready development methods, we deliver efficient results that drive ROI for clients like you. Take note that your stability-focused MVP is right up my alley; I prioritize functionality over unnecessary engineering to ensure your target launch meets success.