Senior Full-Stack Developer for 10-Day Sprint

@webbookstudio

Hi there, We understand you need a senior full-stack developer for an intensive 10-day sprint to launch Rally, a web-based operating system for college events and nightlife, focusing on completing and connecting the frontend and backend, authentication, event management, and more. With our strong experience in modern React/JavaScript web development and backend/database/API, including projects like a learning platform website for children and an online shop for a Scandinavian fashion brand, we're confident in delivering a stable and working launch. Our team has a track record of 500+ projects, a 5.0 rating, and 17 years of experience. Can you share more about the current state of the repository and what specific areas of the product scope you're most concerned about completing within the sprint? Feel free to message us to discuss the details! — Webbook Studio

@shivmirthyusl

Hi, With over 19 years of experience in the industry and a track record of successfully completing 483+ projects, I am confident that I can contribute significantly to your Rally web-based operating system. As a senior full-stack developer, API and database integration, frontend and backend connectivity and bug fixing are well within my skill set. I understand the urgency behind this project and assure you that I have the commitment to meet the tight deadline demands of your sprint. Besides, my team of 40+ skilled developers and designers allows me to efficiently tackle complex projects within narrow timeframes. Throughout my career, I've gained deep proficiency in technologies such as React, AngularJS, HTML5/CSS3, Node JS, PHP & Laravel among others listed in your requirements. Thanks, SBM

@irsolutions

With over a decade of experience in full-stack architecture and high-scale systems, I understand the urgency of launching Rally, a web-based operating system for college events and nightlife. As a senior full-stack developer with a background in scaling systems for over 1 million users, I am well-equipped to handle the complexities of completing and connecting the frontend and backend, implementing authentication and user roles, and ensuring a successful production deployment for your project. In order to ensure scalability and security for Rally, I would recommend implementing a microservices architecture to handle the different functionalities of the operating system. This will allow for easier maintenance and scalability as the project grows. My past success in building and scaling Telegram Mini Apps for over 1 million users demonstrates my ability to handle high-complexity projects like this one. I encourage you to take action and reach out to discuss the roadmap for completing Rally within the 10-day sprint. I am available to start immediately and am committed to delivering a stable, working launch for your project. Let's collaborate to bring Rally to life efficiently and effectively. Thank you for considering my proposal.

@diektech

Hi — Elias here from Miami. I see you're looking to complete and launch Rally in an intensive 10-day sprint. Getting to this stage quickly is crucial, but ensuring a solid foundation is key to long-term success. The real technical challenge here often lies in maintaining a balance between rapid delivery and system reliability. A common issue in projects with tight timelines is overlooked integrations and workflow complexities that can lead to scalability issues down the road. The tricky part is usually ensuring that the architecture can support future features without requiring a complete overhaul. My approach would focus on structuring the application for stability and ease of future updates. I’d ensure that the backend is well-integrated with the frontend, using best practices for API development, which facilitates maintainability. I've worked on similar projects where we built applications that not only met immediate requirements but also allowed for seamless expansion. A few questions to better understand the scope: Q1 – What specific user roles and permissions do you envision for Rally? Q2 – How do you plan to handle any integrations with existing systems? Q3 – What are your scaling expectations post-launch? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.

@ost

As a highly skilled senior full-stack developer with a focus on AngularJS, API and backend development, I have a broad range of expertise that aligns seamlessly with your project requirements. My experience of working across diverse projects, including complex web-based systems, has provided me with the versatility to dive into existing codebases and take ownership efficiently. This means that I’m not only proficient in modern React/JavaScript web development but also skilled in backend/database integration and experienced in managing the working dynamics of a deadline-driven project. In terms of your MVP sprint, I understand that delivery is paramount. While I appreciate the importance of stability and functionality over perfection, I bring an unwavering commitment to quality and detail-oriented approach to all my tasks. My everyday engagement will be marked by daily Git commits, constant troubleshooting and robust bug fixing measures entailing both frontend and backend-centric checks. Don't worry about communication barriers - I am fluent in English and will keep you updated in real-time with daily working demos/deployments despite our possibly differing time zones.

@raheel2k29

Hello, I am interested in joining your 10-day sprint to help complete and launch Rally. I understand this is an existing product and codebase, not a greenfield build, so my focus will be on quickly understanding the current architecture, identifying launch blockers, and delivering a stable production-ready MVP. I have experience working inside existing full-stack applications, completing frontend/backend integrations, fixing complex issues, and shipping production systems under tight deadlines. I can help with: Completing React frontend features and connecting backend APIs Authentication, user roles, and permission workflows Event creation and management systems Organization dashboards and admin functionality Ticketing workflows and QR code check-in systems Payment integration and transaction flows Database integration and optimization My workflow during the sprint: Review the existing repository, architecture, and product priorities immediately Maintain daily Git commits and regular progress updates Provide working demos throughout development Prioritize critical launch features over unnecessary complexity Ensure the final deployment is stable and maintainable I would be happy to review the repository, current stack, and launch checklist to provide a detailed execution plan. Thank you for considering my proposal. Best regards RAHEEL

@Hammadhassan21

Hey, I’ve carefully reviewed your project, and I understand you need a senior full-stack engineer who can quickly take ownership of an existing codebase and push Rally to a stable production launch within a tight 10-day sprint. I can help complete the remaining functionality while keeping the focus on reliability, speed, and launch readiness. I will work on frontend/backend integration, authentication, user roles, event management, dashboards, ticketing, QR check-in, payments, notifications, database workflows, responsive improvements, bug fixes, and deployment. My focus is delivering a working MVP with clean commits, regular demos, and clear communication throughout the sprint. I have hands-on experience with similar full-stack applications and would be happy to share relevant examples during our discussion. One quick question: What technology stack is the current Rally codebase using, and are the highest-priority launch blockers already identified? Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best Regards, Hammad Hassan

@onkarkulkarni8

Hi, I your "Senior Full-Stack Developer for 10-Day Sprint" 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.

@doomshellsl

Hello, 10 days is a tight deadline, but with an existing codebase and clear launch priorities, the right approach is to focus on execution, integration, and removing blockers—not rebuilding the product. At Doomshell Software Pvt. Ltd., we bring 14+ years of experience in full-stack development and have worked on production applications involving React, JavaScript, APIs, databases, authentication, dashboards, payments, and third-party integrations. For Rally, we can step into the existing repository and focus on getting the launch-critical workflows working end-to-end: • Connect and complete frontend/backend functionality • Authentication, roles, and organization dashboards • Event creation, ticketing, QR check-in, and payments • Admin tools, notifications, APIs, and database workflows • Responsive fixes, bug resolution, testing, and deployment • Daily Git commits, progress updates, and working demos We understand the priority is a stable production launch within 10 consecutive days. We’ll work directly with your existing architecture, prioritize critical features, and avoid unnecessary engineering changes that could consume valuable sprint time. We’re also open to continued development after launch if the collaboration is successful. Let’s schedule a quick 10–15 minute call to review the repository, current completion level, and launch blockers. We can then define the sprint priorities and give you a realistic execution plan. Best Regards, Doomshell Software Pvt. Ltd.

@corpmember29

Hello, I’m ready to take ownership of your 10-day Rally launch sprint and focus entirely on getting the existing product stable, connected, tested, and production-ready—not rebuilding what already works. I have 13+ years of full-stack development experience and strong expertise working inside existing React/JavaScript codebases, backend APIs, databases, authentication, payments and production deployments. For the sprint, I’ll prioritize: • Frontend/backend integration and API completion • Authentication, roles and organization workflows • Event creation, management and dashboards • Ticketing, QR check-in and payments • Admin functionality and notifications • Database integration and data consistency • Mobile responsiveness and critical UI fixes • Bug fixing, QA and production deployment • Daily Git commits + working demos/deployments I’m comfortable working independently from your repository, product scope and mockups, identifying blockers quickly and making practical MVP decisions under a tight deadline. Availability: I can commit heavily for the full 10 consecutive days. Time zone: IST (UTC+5:30) Proposed fixed price: $3,500 USD Relevant work can be shared during the discussion, including live applications and code samples where available. If you provide the repository and launch priorities, I can immediately review the codebase, identify the critical path and start closing launch blockers from Day 1. Thanks, Christina

@kanika6665

Hi, I’ve read through your Rally sprint scope carefully, and I’m confident I can step into the existing codebase and help push it to a stable launch within the 10-day window. This is exactly the kind of deadline-driven full-stack execution I handle best, connecting frontend and backend, tightening authentication, admin flows, payments, database integration, responsiveness, bug fixing, and production deployment. My background aligns well with fast-moving web application delivery, especially where JavaScript drives the interface and APIs/database logic must be completed cleanly inside an existing product. I work hands-on, communicate clearly in English, commit daily through Git, and can provide working demos consistently so launch risks stay visible and controlled. I can start immediately and dedicate heavy availability over the next 10 consecutive days. Share the repository, scope, and launch priorities, and I can review quickly and begin with the highest-impact items first. Would you like the first 48 hours focused on launch blockers, or on stabilizing auth, payments, and deployment first? Sincerely, KANIKA

@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 the 10-day sprint. I understand that you need a senior full-stack engineer to complete and connect the frontend and backend, handle authentication, event creation, and other crucial features, all while working within an existing codebase. My experience with modern React/JavaScript web development, backend/database/API development, and shipping real production applications makes me a strong fit for this project. My team and I have completed numerous projects with tight deadlines, including a learning platform website for children and a website for an electric bike company, both of which involved complex frontend and backend integrations. I'm confident in my ability to work efficiently and effectively within the existing codebase to deliver a stable, working launch. I'm available to start immediately and can dedicate myself heavily to the project for the next 10 consecutive days. I'm located in Lviv, Ukraine (Eastern European Time zone), and I'm comfortable with daily Git commits and providing a daily working demo/deployment. I propose a price of $3,000 USD for the project, which is within your budget. You can find examples of

@marjanahmed13

Hi! My name is Marjan and I'm here to offer you my services as a skilled applicant with over a decade of experience working on Freelancer.com. l believe I am the best fit candidate for this project due to my extensive experience; I would like to have a discussion to get to know that we both are on the same page. Once the scope will be locked, I will start working on it right away.

@zainalitariq245

Hi, I can do in your budget and I understand you need a senior full-stack engineer to join a focused 10-day sprint and help take Rally from its current state to a stable production launch. Since the product and codebase already exist, the priority is quickly understanding the architecture, completing missing features, connecting frontend and backend, fixing issues, and delivering a reliable MVP. I will work directly inside the existing repository, handle frontend and backend integration, authentication, user roles, event management, dashboards, ticketing, QR check-in, payments, admin tools, notifications, database work, responsiveness, testing, and deployment. I’m comfortable working under tight deadlines, making quick decisions, maintaining clean Git commits, and providing daily progress updates. Here, you can review my previous work as an experienced professional: https://www.freelancer.com/u/zainalitariq245 Let's discuss further. Thanks.

@durgesh8527

Being a full-stack development team with years of experience, my team and I can provide the high-quality, scalable software you're looking for. We've successfully built countless web apps using core technologies like React, Node.js, Django, and more – some of which we can proudly share as live application links on our GitHub. Our experience with REST APIs and third-party integrations will prove useful in implementing the functionalities you require for Rally - from event creation to ticketing, QR check-ins and payments. Additionally, we are proficient with modern React/JavaScript web development and can easily handle backend/database/API tasks.

@Web1devloper

With over 8 years of building comprehensive applications under my belt, I'm confident in my ability to take ownership of the Rally project and bring it to launch. Your project aligns perfectly with my expertise in full-stack development, emphasizing my experience working extensively with both React/JavaScript for front-end and Node.js for backend, including Git for version control and Docker for deployment. My skills in database integration will also prove valuable as we speed up lead-times without sacrificing code quality or user experience. I've worked on similar projects before, giving me a solid foundation to understand your needs and make precise contributions within your tight deadline. You need someone who can work relentlessly, producing daily commits and deployments - that's exactly what I pride myself in. I'm based in India (GMT +5:30), which ensures no timezone inconvenience and am ready to dedicate myself exclusively to your project over the next 10 days.

@efanntyo

Hi there, I am excited to express my interest in your project for Rally. With extensive experience as a senior full-stack developer, I am well-equipped to dive into your existing codebase and drive the 10-day sprint towards a successful launch. My expertise in PHP, JavaScript, HTML, AngularJS, and API development aligns perfectly with your requirements. I understand the importance of integrating and finalizing the frontend and backend, managing authentication, user roles, event functionalities, and ensuring mobile responsiveness. Having managed similar projects, I am confident in delivering a stable, working MVP while maintaining high-quality standards. My past work includes successfully shipping production applications, which you can explore through my portfolio and GitHub. I am committed to starting immediately and will be available extensively for the next 10 days, ensuring daily updates and deployments. With a focus on clear communication, I will provide regular progress reports to keep you informed and involved throughout the development phase. I look forward to the opportunity to contribute to Rally's success and potentially collaborate on future projects. Best Regards,

@ixorawebmob

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, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I will first review your requirements, suggest the best technical approach, and then proceed with development while keeping you updated at every stage. 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: What specific functionalities do you envision being most critical for the event management aspect? 1. Do you need this for mobile, web, or both? 2. Do you already have UI/UX designs or should we create them? 3. Will there be any third-party API or payment gateway integration? 4. What is your expected timeline for completion? 5. Are there any reference apps or websites you like? Let’s discuss over chat! Regards, Arpit Jaiswal

@sparkbrains

Hi, We can start immediately and dedicate the next 10 days exclusively to your MVP sprint. Our senior full-stack team has strong experience with React, Node.js, APIs, authentication, payments, ticketing, QR check-in, and production deployments. We'll complete the existing codebase, provide daily Git commits, daily demo builds, and personally handle all development—no subcontracting. Availability: Immediate (full-time for 10 days) Time Zone: IST (flexible overlap) Timeline: 10 days Budget: USD 3,000 The quoted price is a placeholder and can be finalized after reviewing the codebase. Warm regards, Manu