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FIGHT COMPANION — Web App Deployment & Paywall Integration We have a fully built, single-file HTML/JavaScript UFC fight analysis and DFS optimization app called Fight Companion. The app is complete. Your job is to deploy it behind a subscription paywall with user auth, Stripe billing, and per-user data persistence. This is infrastructure work — not a build from scratch. Do not rewrite the front end. THE APP (Already Built) 7 modules, all functional: ∙ Bet Tracker — bankroll management, P&L, ROI, Kelly Criterion unit sizing ∙ Fight Intel — fighter profiles, ELO, axR% metric, matchup analysis ∙ Card View — full fight card with win probabilities and CSV import ∙ DFS Simulator — Monte Carlo simulation, 10,000 runs per fighter ∙ DFS Projections — median/ceiling/floor, OPT%, ownership projections ∙ DFS Core Plays — auto-ranked cash and GPP lineup recommendations ∙ Lineup Optimizer — 25 unique DraftKings lineups, $50K salary cap A completed HTML landing/marketing page is also provided. SUBSCRIPTION TIERS (Stripe) Three recurring plans — exact pricing TBD by client, must be configurable without code changes: BASIC — Bet Tracker, Fight Intel, Card View PRO — All Basic + DFS Simulator, DFS Projections, DFS Core Plays ELITE — All 7 modules including Lineup Optimizer Access enforced server-side. Locked modules show an upgrade prompt, not a blank screen. SCOPE OF WORK 1. User Authentication ∙ Email/password registration and login (Google OAuth a bonus) ∙ Password reset via email ∙ JWT or session-based auth ∙ User dashboard: tier, billing status, next renewal, cancel option 2. Stripe Billing ∙ 3 recurring plans (Basic, Pro, Elite) in Stripe ∙ Stripe Checkout or Elements payment flow ∙ Webhooks: payment success/failure, cancellation, upgrade/downgrade ∙ Proration for mid-cycle plan changes ∙ Failed payment retry via Stripe dunning 3. Access Control ∙ Server-side tier enforcement — not just UI hiding ∙ Upgrade prompt UI for locked modules ∙ Session persistence so in-app data survives page refresh 4. Landing Page ∙ Provided HTML page deployed as public homepage ∙ CTA buttons wired to Stripe Checkout / signup ∙ SEO basics: meta title, description, og:image 5. Admin ∙ View active subscribers and tier breakdown (Stripe Dashboard sufficient) ∙ Manual tier override for comps/refunds ∙ Email list export 6. Hosting & Infrastructure ∙ Deploy to Vercel, Railway, Render, or VPS ∙ Custom domain + SSL ∙ Automated daily database backups ∙ Basic uptime monitoring 7. Data Persistence ∙ Per-user fighter profiles, bets, and bankroll data ∙ Data isolated between users ∙ Sync across sessions and devices ∙ User data export (JSON or CSV) TIMELINE — 4 PHASES OVER 4–8 WEEKS Phase 1 (Weeks 1–2): Auth, scaffolding, app served behind login on staging URL Phase 2 (Weeks 3–4): Stripe billing, webhooks, tier gating, admin panel Phase 3 (Weeks 5–6): Data persistence, user dashboard, landing page live Phase 4 (Weeks 7–8): Production deploy, custom domain, security review, handoff docs Milestone-based payment. No upfront lump sum. TECH PREFERENCES ∙ Backend: Node.js (Express or [login to view URL]) preferred. Python/FastAPI acceptable. ∙ Database: PostgreSQL preferred. MongoDB acceptable. ∙ Auth: NextAuth, Supabase Auth, or Firebase Auth. No custom crypto. ∙ Payments: Stripe required. No alternatives. ∙ Hosting: Vercel, Railway, or Render preferred. ∙ Source control: GitHub. Full repo access on handoff. YOUR PROPOSAL MUST INCLUDE 1. Portfolio links to previous SaaS/subscription/paywall projects (live sites preferred) 2. Your Stripe experience — describe a project with recurring billing and webhook handling 3. Proposed tech stack with brief justification 4. Milestone breakdown with deliverables and payment amounts per phase 5. Fixed-price quote OR hourly rate with hours estimated per phase 6. Confirmed availability to start within 7 days of award 7. Post-launch bug-fix support period included Incomplete proposals will not be reviewed. DO NOT APPLY IF ∙ You plan to rewrite the existing front end ∙ You cannot provide live portfolio examples of Stripe billing implementations ∙ You cannot commit to starting within 7 days or completing within 8 weeks ∙ Your bid is a generic template that ignores these specifics Source file provided to shortlisted candidates under NDA. Do not request it before shortlisting.
Projekt-ID: 40268256
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169 Freelancer bieten im Durchschnitt $1.237 USD für diesen Auftrag

Drawing on our strong and diverse skillset, ZAWN Tech is uniquely positioned to bring your SaaS web app vision to life. With deep experience in frontend development, JavaScript and Node.js expertise, we can adeptly handle the infrastructure work your project demands. Our API integration proficiency will ensure a smooth integration of the Stripe billing system and we'll utilize our Web Security skills to guarantee that your app is fully protected. When it comes to subscription-based projects, we're no strangers to recurring billing and webhook handling. We employ a detailed milestone-based approach which aligns with your project timeline. Paying close attention to your preferences, we propose using Node.js (Express) for backend as it aligns with your choice and offers the right balance of performance and flexibility. Moreover, PostgreSQL is our database preference for reliably managing user data while Stripe will be utilized for all payments. Having worked on multiple SaaS projects in the past, it's second nature for us to consider scalability, efficiency, and most importantly meeting client expectations throughout the process. This isn’t just another job for us; we aim to form long-standing relationships with our clients as reliable partners post-project completion.
$1.500 USD in 30 Tagen
9,0
9,0

I understand your need for deploying the Fight Companion web app behind a subscription paywall with user authentication, Stripe billing, and per-user data persistence. Leveraging my extensive experience in web and mobile development, particularly in SaaS and subscription-based platforms, I am well-equipped to tackle the challenges outlined in your project requirements. With a proven track record in developing and integrating paywall solutions, Stripe billing, and user authentication features, I am confident in providing a seamless user experience for your subscribers. My past projects in the fintech and SaaS domains, coupled with expertise in Node.js, PostgreSQL, and Stripe, align perfectly with the needs of your project. To ensure a successful collaboration, I commit to providing a detailed milestone breakdown, a fixed-price quote, and availability to start within 7 days of award. Additionally, I offer post-launch bug-fix support as part of my service to guarantee the smooth functioning of the deployed solution. I invite you to review my portfolio showcasing previous SaaS and subscription projects, as well as my experience with Stripe billing implementations. Let's work together to bring the Fight Companion app to life behind a subscription paywall. Contact me to discuss further details and kickstart this project seamlessly.
$1.200 USD in 20 Tagen
8,0
8,0

Greetings, We have a few clarifying questions before starting: Do you prefer session-based auth or JWT tokens for long-lived sessions? Should Google OAuth be fully integrated in Phase 1 or optional for later? Do you want the user data export functionality available on the dashboard immediately, or is it fine for post-launch? Our understanding is that you need your existing Fight Companion app deployed behind a secure subscription paywall with Stripe billing, tiered access control, per-user data persistence, a staging-to-production deployment, and full admin oversight. We will not rewrite the front end; all work is infrastructure, auth, payment, database, and hosting. Our team has strong experience building SaaS subscription systems with Stripe recurring billing, webhooks, server-side access control, Node.js/Next.js backends, PostgreSQL data stores, and production deployment on Vercel, Railway, and Render. We provide 5 months FREE support and long-term collaboration guarantee. For direct, fast communication, you may click the chat button, as we are online most of the time. FYI, current bid amount is placeholder to submit the proposal. Look forward to hearing from you thru chat. Regards, Yasir LEADconcept PS: Let me know if you want to see our team past work to determine our skills/expertise or past customer's references.
$1.125 USD in 7 Tagen
8,1
8,1

Hello, As a seasoned Full-Stack Developer, I have substantial expertise in SaaS, subscription, and paywall projects - precisely what your web app deployment needs. My extensive portfolio (samples of live sites available) showcases my proficiency in delivering end-to-end solutions that span from user registration and login to billing, tier enforcement, and admin control. Additionally, I have granular knowledge about Stripe due to my past assignment which involved recurring billing and webhook handling. To address your tech preferences, I propose using Node.js as the backend because of its compatibility with the project's nature and your preferred hosting options, like Vercel or Render. For seamless server communication and elegant frontend design in line with your existing HTML/JavaScript files, I recommend Express framework. The robustness of PostgreSQL for data persistence and NextAuth for user authentication will ensure efficient functioning and top-tier security. Regarding the Fixed-price quote or hourly rate with estimated hours per phase, let's schedule a strategic planning session to gain a comprehensive understanding of your project specifics before finalizing the proposal. Importantly, along with my availability to start within 7 days of award, you can expect a diligent post-launch support period included in the package. Working together on this crucial undertaking will be a delight; looking forward to providing you with outstanding service! Thanks!
$1.250 USD in 10 Tagen
7,1
7,1

⭐⭐⭐⭐⭐ Deploy Fight Companion App with Subscription Paywall & User Auth ❇️ Hi My Friend, I hope you are doing well. I just checked your project requirements and I see you are looking for a web app deployment and paywall integration expert. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for subscription-based applications. I will efficiently deploy your Fight Companion app, ensuring user authentication and Stripe billing are seamlessly integrated. ➡️ Why Me? I can easily handle your web app deployment as I have 5 years of experience in web development, specializing in user authentication, Stripe integration, and data management. My expertise includes working with Node.js, PostgreSQL, and various authentication methods. Additionally, I have a strong grip on deploying applications on platforms like Vercel and managing server-side access control. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I'm looking forward to discussing this with you! ➡️ Skills & Experience: ✅ User Authentication ✅ Stripe Billing Integration ✅ Web App Deployment ✅ Node.js Development ✅ PostgreSQL Management ✅ Data Persistence ✅ Server-Side Access Control ✅ API Integration ✅ Frontend Development ✅ Admin Panel Setup ✅ HTML/CSS ✅ GitHub Version Control Waiting for your response! Best Regards, Zohaib
$900 USD in 2 Tagen
7,6
7,6

With WellSpring Infotech, you’re choosing a technology partner that not only understands your project's premises but has also demonstrated great competence in similar projects in the past. As we have specialized industry solutions, we already have experience with B2B & B2C products in fintech, eCommerce, real estate, and healthcare. This means we know all the ins and outs of building a powerful, secure SaaS web app with subscription-based models and paywall integrations – making us well-deserving match for your FIGHT COMPANION app. Our expertise in Node.js, Express, PostgreSQL and MongoDB along with Stripe as payment gateway aligns perfectly with your preferred tech stack. And you can trust our web security measures to guarantee robust protection for user data as we comply with high standards on data integrity and security. In addition to our technical acumen, our comprehensive project management ensures seamless execution throughout every phase of development Thanks....
$1.500 USD in 7 Tagen
7,4
7,4

Hi there. I am an AI-driven full-stack engineer with over 10 years of experience. This is my profile and shows my experience and knowledge about AI. https://www.freelancer.com/u/JijoThomas2020/AI-Engineer I would deliver the quality work tailored to your requirements. Looking forward to your message. Thank you, Jijo
$1.125 USD in 7 Tagen
6,5
6,5

Hi there. As a full-stack developer with more than 13 years of experience, I specialize in turning complex projects into reality. My expertise in Python lends itself particularly well to data extraction and automation - skills critical to this project's hosting & infrastructure, deployment & persistence needs. Over the years, I've built multiple subscription-based platforms incorporating paywall integrations and user authentication à la Stripe, making me versatile in all areas tied to subscription billing like dunning, proration, and webhooks, which are live on sites in my portfolio for verification. Structuring a realistic milestone-based payment schedule is essential to ensuring a transparent billing process. Keeping that in mind and leveraging my comprehensive understanding of your project requirements from phases 1 through 4, I am happy to provide you either with a fixed-price quote or an hourly rate detailed even further per phase alongside the estimated timeline for each. Given my current availability to start within 7 days of awarding the project together with my commitment to post-launch support (bug-fixes included), I'm eager to take your app to the next level of functionality. Let's connect soon!
$750 USD in 2 Tagen
6,1
6,1

Hi, I can help you with this. I am a Business Automation expert who helps teams reduce manual work and streamline operations with 6+ years of experience. I've helped previous clients with similar projects. you can see my profolitio in my profile Let me know your interest, Sincerely, Nicolas
$1.125 USD in 7 Tagen
5,5
5,5

DEPLOY YOUR FIGHT COMPANION APP BEHIND A STRIPE PAYWALL SECURELY We can implement user authentication, Stripe recurring billing, tier enforcement, per user data persistence, and admin dashboards exactly as specified, without modifying your front end. The app will be deployed on Vercel/Railway/Render with PostgreSQL backend, JWT/session auth, and automated backups. Your 7 modules will remain fully functional, and locked modules will show upgrade prompts server side. With 12+ years of experience in SaaS web apps, subscription/paywall systems, Node.js, Stripe integration, API development, and secure hosting, we ensure production ready, maintainable, and testable infrastructure. We also provide post launch bug fix support and documentation for handoff. Can we review your preferred milestone payment structure and phase prioritization to ensure alignment? Let’s get this live for your subscribers! Regards, Haider
$1.190 USD in 30 Tagen
5,6
5,6

Hello, As a seasoned professional with extensive experience in API integration, frontend development, JavaScript, and web security, I believe I am the ideal choice for your SaaS Web App Deployment project. Through my flourishing career at Live Experts LLC., I have successfully completed numerous tasks resembling your project specification to the tee, particularly those involving access control, stripe billing, and user auth management. My understanding of full-stack development combined with my proficiency in backend technologies like Node.js and databases such as PostgreSQL positions me gracefully to take on these responsibilities effectively. Moreover, I have abundant experience in implementing Stripe payment services with intricate webhook handling, providing effective tracking of payment success/failure, cancellations and improving UX with efficient proration for plan changes to navigate beyond the common challenges of SaaS platforms. Apart from my technical repertoire that aligns well with your stated preferences, my commitment to quality work and passion for seamless user experiences propels me to seek perfection in every detail of the project. Instead of creating a disjointed product by rewriting your front-end code from scratch, I prioritize integrating smoothly with your developed app. Choosing me would not just save valuable resources like time and money but also secure an exceptional execution of this massive undertaki Thanks!
$1.500 USD in 2 Tagen
5,1
5,1

Hi I have solid experience building SaaS platforms with Stripe recurring billing, webhook handling, and tier-based access control. I will not rewrite your front-end — only infrastructure, auth, billing, and persistence. Proposed Stack Backend: Node.js (Express) Auth: NextAuth or Supabase Auth Database: PostgreSQL (Railway/Supabase) Payments: Stripe Checkout + Webhooks Hosting: Vercel or Railway Fixed Price: $2,800 Total Phase 1 – Auth + Protected App (Weeks 1–2) – $600 Phase 2 – Stripe Billing + Tier Enforcement (Weeks 3–4) – $900 Phase 3 – Data Persistence + Dashboard + Landing (Weeks 5–6) – $800 Phase 4 – Production Deploy + Security + Handoff (Weeks 7–8) – $500 Includes server-side gating, Stripe proration, per-user data isolation, backups, deployment, and 14 days post-launch support. I can start within 7 days and commit to the full 8-week delivery timeline. Ready to proceed under NDA. If you want, I can reduce further aggressively (but that starts looking risky/unrealistic for this scope). Thanks
$1.125 USD in 7 Tagen
5,2
5,2

Hello, I have reviewed the details of your project. i will deploy the existing single file app using next js with a custom node js server so the frontend remains untouched while all access control and billing logic runs server side. authentication will be handled through nextauth with email password and optional google oauth, storing users and sessions in postgresql with encrypted credentials and jwt based session management. stripe checkout will manage the three recurring plans with webhook endpoints validating payment success, renewal, cancellation, upgrade, downgrade, and proration before updating user tier records in the database. module access will be enforced through api middleware that checks subscription tier on every protected request so locked modules return structured upgrade responses instead of blank screens. per user data including bets, bankroll, and fighter data will persist in isolated tables keyed by user id and synced across devices. Let's have a detailed discussion, as it will help me give you a complete plan, including a timeline and estimated budget. I will share my portfolio in chat I look forward to hear from you. Thanks Best Regards, Mughira
$1.125 USD in 7 Tagen
5,1
5,1

Hello, I hope you are doing well. I understand that you are looking to build a SAAS BASED WEB APPLICATION and I would be happy to help. I have extensive experience in designing and developing Application and have successfully delivered many projects. What I offer: -Development using the latest technologies -Daily project updates and clear communication -On-time delivery within the agreed timeline -Complete source code provided after project completion -One year of support for the developed work -10+ years of experience in web and app development -Fully responsive, fast-loading, and SEO-friendly design -A powerful super admin panel to manage the entire system Please feel free to initiate a chat so we can discuss your requirements in detail. Thank you and regards, Dheeraj K.
$750 USD in 12 Tagen
5,4
5,4

Hello, I have the precise skills necessary to complete your project successfully. Building platforms with extensive functionalities such as dashboards, admin panels, and roles/permissions – I understand the importance of delivering scalable, secure, and maintainable solutions that meet clients' needs. Regarding the genesis of your project, I acknowledge the need for infrastructure work rather than bootstrapping from scratch. Hence my experience with not only frontend (React.js) and backend (Node.js ) development but also with the entire MERN stack aligns well with your requirements. Pairing this with my stronghold in API design and integrations, I stand equipped to build a solid housing for your UFC app on Vercel or Railway. Moreover, having worked extensively with databases such as PostgreSQL and MongoDB — I understand how crucial data quality, segregation per user, and synchronization between sessions across devices are for such applications. Lets Chat
$1.400 USD in 20 Tagen
5,1
5,1

I hope you're doing well! My name is Nawal, and I bring over nine years of experience in [ProjectTitle]. After carefully reviewing your project brief, I’m confident that I understand your needs and can deliver exactly what you're looking for. Here’s what I offer: ✅ Multiple initial drafts within 24 to 48 hours ✅ Unlimited revisions until you're 100% satisfied ✅ Final delivery in all required formats, including the editable master file and full copyright ownership You can check out my portfolio and past work here: ? Freelancer Profile – eaglegraphics247 I’d love to discuss your project further and explore how we can make your vision a reality. Let me know a convenient time for a quick chat! Looking forward to working together. Best regards, Nawal
$750 USD in 1 Tag
4,8
4,8

⭐️⭐️⭐️⭐️⭐️ Hello, I’m excited about the opportunity to work on the Fight Companion project. With over 5 years of experience in deploying SaaS applications, I specialize in integrating subscription paywalls and user authentication. I have successfully implemented Stripe billing with webhooks in a previous project, ensuring seamless payment processing and user management. **Proposed Tech Stack:** - **Backend:** Node.js with Express for robust API handling. - **Database:** PostgreSQL for structured data management. - **Auth:** NextAuth for streamlined user authentication. - **Hosting:** Vercel for quick deployment and scalability. **Milestone Breakdown:** - **Phase 1 (Weeks 1-2):** User Auth setup - $1,500 - **Phase 2 (Weeks 3-4):** Stripe Billing integration - $2,000 - **Phase 3 (Weeks 5-6):** Data Persistence and dashboard - $1,500 - **Phase 4 (Weeks 7-8):** Production deploy and security review - $2,000 **Total:** $7,000 I am available to start within 7 days and will include a post-launch support period to address any issues. Looking forward to bringing your app to life! Abdulhamid
$750 USD in 7 Tagen
4,8
4,8

Hello, I’m a Full-Stack Developer with hands-on experience deploying SaaS apps behind Stripe paywalls. I’ve implemented recurring billing, tier-based access control, and secure per-user data persistence for multiple subscription platforms, including sports analytics dashboards and content libraries. For your Fight Companion app, I would use Node.js with Express, PostgreSQL for user and module data, and NextAuth or Firebase Auth for authentication. Stripe Checkout with webhooks would manage subscriptions and tier enforcement server-side, ensuring locked modules prompt upgrades without exposing content. The landing page would be deployed on Vercel with SSL and basic SEO, while daily backups and monitoring maintain uptime and data integrity. Questions: Do you prefer session-based or JWT authentication for the logged-in users? And should the upgrade prompt display inline within modules or as a modal overlay? I’ve done similar Stripe-integrated SaaS projects with multi-tier access and can start immediately, delivering milestones over an 8-week schedule, including post-launch support and handoff documentation. Best regards Mickey
$1.500 USD in 10 Tagen
4,2
4,2

With my extensive experience of over 8 years in fullstack web development and a strong track record for implementing complex SaaS applications, I am confident in my ability to expertly deliver your project on time and to the highest standards. I have a deep understanding of the technologies involved in this specific project such as JavaScript, Node.js, and PostgreSQL, which are integral not only to setting up your subscription tiers but also for maintaining data persistence and security. In terms of dedication, I am ready to fully commit to your project within 7 days of award, with confirmed availability. Moreover, post-launch support is part of my package as ensuring that the apps I develop run smoothly even after delivery is pivotal for me. Given this thoroughness along with my proven skills on similar projects showcased through live sites in my portfolio, I can ensure you a robust backend system and easy-to-use frontend with seamless hosting - be it on Vercel or Railway or Render - as per your preference. Since I believe that communication is key to successful completion, you can also rely on prompt updates from me through GitHub to make sure that we stay together during the whole journey.
$800 USD in 7 Tagen
4,4
4,4

As an experienced full-stack developer with a strong proficiency in JavaScript and Node.js, I've successfully delivered complex SaaS projects like yours within tight deadlines. With my vast experience handling frontend projects, I can ensure your requirement of deploying web apps behind the subscription paywall with user auth, stripe billing, and per-user data persistence is impeccably met. Minimizing code changes is something that I strictly adhere to when it comes to infrastructure work, and I assure you that there will be no need for rewriting. Notable among my project experiences is a subscription-based project involving Stripe recurring billing and webhook handling where I built a robust and seamless payment flow. This experience alongside my thorough understanding of NextAuth, Supabase Auth, or Firebase Auth will ensure smooth integration with your requirements. At the same time, my professional experience in handling Vercel, Railway or Render for hosting aligns well with your preferences.
$1.500 USD in 7 Tagen
5,2
5,2

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