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Senior Full-Stack Developer — Fitness Coaching SaaS Platform (Phase 1 + 2) Description: We're building a SaaS platform for our online fitness coaching business — currently profitable, moving from WhatsApp-based operations to a scalable web platform. About us: Operating fitness coaching service with ~350 active clients. Funded from operations, founder-led. Not a stealth startup, not a side project. Scope (Phase 1 + 2): Client side: - Sales landing page + Razorpay subscription billing (1/3/6/12 month plans + EMI) - Multi-step onboarding (questionnaire + photo upload) - Client dashboard (plan view, check-ins, progress tracking, subscription management) Internal team workflow: - 4 user roles with strict permissions (Client, Tier 3 Worker, Tier 2 Coach, Admin) - Tier 3 dashboard with queue + AI-assisted plan drafting - Tier 2 review/approve/reject workflow - Admin panel with full analytics AI integration: - OpenAI / Claude API for plan generation + check-in response drafting - Admin-editable prompts (no code changes needed for prompt tweaks) - Server-side calls, audit-logged System logic: - Auto-calculated Complexity Score on onboarding (routes high-risk clients to certified coaches) - Dynamic Success Score (drives queue priority + recovery actions) - Auto-escalation rules (injury/medical/plateau mentions route to Tier 2) - Notifications via WhatsApp Business API + email + push Tech preferences: - Frontend: [login to view URL] (App Router) - DB: Supabase / Postgres - Auth: Clerk or Supabase Auth (role-based) - Payment: Razorpay (required) - Hosting: Vercel / AWS - AI: OpenAI / Claude API - Repo: GitHub (in our org from Day 1, non-negotiable) Must-haves: - Built to scale to 10,000+ users without rebuild - Modular architecture (Phase 3 + 4 will plug in later, no rewrites) - Source code ownership from Day 1 - Weekly Friday demos throughout the build - 30-day bug-fix window post each phase launch We have a detailed specification document (10-section flow with roles, data model, scoring logic, build phases). Will share with shortlisted candidates. What we're looking for: - 3+ years building production SaaS - Has shipped at least one subscription product with payment integration - Strong with multi-role auth + queue-based workflows - Available for daily WhatsApp/Slack communication (India-based preferred) - Can show 2-3 live, running projects To apply, please share: 1. Portfolio with 2-3 relevant past projects (live URLs preferred) 2. Your proposed tech stack with brief reasoning 3. How you'd handle the AI integration cost-efficiently at scale 4. Your typical project timeline and payment milestone structure 5. One question you'd ask before quoting Generic copy-paste proposals will be ignored. Looking for someone who actually reads this and engages.
Project ID: 40488221
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117 freelancers are bidding on average ₹204,695 INR for this job

Hi, I read the entire brief, and what stood out is that you're not building a fitness app—you’re productizing an already validated coaching business with 350+ active clients. That changes the architecture decisions significantly because the platform needs to support operational efficiency first, not just client-facing features. I've worked on SaaS platforms with subscription billing, role-based workflows, AI-assisted operations, and approval pipelines, so the queue management, escalation logic, scoring systems, and coach-review flow are areas I'm comfortable designing and implementing. Thanks
₹200,000 INR in 7 days
4.0
4.0

Hi, I read your project and it looks like a great fit for our team. We have experience building SaaS platforms, subscription systems, multi-role dashboards, AI features, and scalable web applications. I like that you already have a clear workflow and growth plan. I'd love to discuss your specification document and share how we can build this efficiently and scale it as your business grows. Looking forward to chatting. Regards, Rohan
₹165,000 INR in 7 days
3.2
3.2

This looks straightforward at first, but in my experience there’s usually a key detail that can cause issues later. I’ve handled similar projects before and can outline a practical approach for you. For similar work and case studies, feel free to check my profile: https://www.freelancer.com/u/rajeshrolen Let me know if you I'd like me to walk you through the plan. – Rajesh Rolen
₹200,000 INR in 7 days
2.9
2.9

Hello, I am interested in developing your Fitness Coaching SaaS Platform. I have experience building scalable web applications with user management, subscription systems, dashboards, progress tracking, scheduling, notifications, and secure payment integrations. For your platform, I can create a modern, responsive solution that allows coaches to manage clients, assign workout plans, track fitness progress, and communicate efficiently. The system can include personalized fitness programs, analytics, appointment booking, membership management, and admin controls to streamline operations. My focus is on delivering a secure, high-performance, and user-friendly platform that supports future growth and feature expansion. I am committed to clear communication, quality development, and timely delivery throughout the project. I look forward to discussing your requirements further. Thanks
₹180,000 INR in 25 days
3.0
3.0

Hello, Your project caught my attention because it closely matches work I’ve completed for previous clients. I’d love to learn more about your specific requirements so I can provide an accurate scope, timeline, and budget. A brief conversation will allow me to ask a few important questions and ensure we’re aligned from the start. I can also share examples of similar projects, discuss the results achieved, and explain how I would approach your project step by step. Looking forward to connecting and exploring how we can make this project a success. Thanks, Mayank Sahu
₹150,000 INR in 20 days
2.2
2.2

Hello, I hope you are doing well. I understand that you are looking to build a FITNESS COACHING SAAS PLATFORM, and I would be happy to help. I have extensive experience in designing and developing platforms 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.
₹200,000 INR in 12 days
2.3
2.3

I'll deliver a robust Fitness Coaching SaaS Platform that withstands real-world API, deployment, and error-handling conditions. The key lies in crafting a clean backend flow, leveraging Node.js, PostgreSQL, and React.js to ensure scalability and maintainability. As a seasoned Full-Stack Developer, I've tackled similar challenges through my work on a Multi-Client ML Inference API. This project involved deploying APIs with sub-200ms latency and production-grade cloud delivery, demonstrating my ability to handle complex backend flows. For this project, I'll focus on building a clean backend structure, integrating APIs, and hardening error handling. I'll provide clear environment setup instructions, API integration flow, and a comprehensive README to ensure seamless deployment. Before diving in, I'd like to clarify the deployment target, API boundaries, and whether this is a greenfield or existing service. This will enable me to tailor my approach to your specific needs. Should the first milestone focus on a working backend flow or on hardening an existing service?
₹169,320 INR in 7 days
1.0
1.0

Your goal isn't just a web platform—it's an operational engine that removes you from the WhatsApp manual grind while ensuring coaching quality scales to 10,000 users. The automated Complexity and Success scoring logic is the key here; it ensures high-risk clients are routed to certified coaches without manual intervention. I will deliver this as a fully managed system: 1. Modular Supabase/Postgres architecture supporting your 4-role permission hierarchy. 2. AI prompt-management layer for plan drafting, allowing you to tweak logic without code changes. 3. Razorpay subscription integration and WhatsApp Business API triggers for automated client recovery. Within the first 72 hours, you'll have the complete Database Schema and RBAC map for approval. I specialize in production-ready SaaS with complex internal workflows and AI-driven automation, ensuring your source code is in your GitHub org from Day 1. Regarding the WhatsApp Business API—do you have a preferred BSP, or should I recommend the most cost-effective one for your volume? Let's review your specification document and start the build.
₹500,000 INR in 45 days
0.0
0.0

Hello there, Moving from WhatsApp to a real SaaS usually breaks when roles, queues, and automation are bolted on later. I would structure this from day one around strict role permissions, queue-based workflows, and modular services so Phase 3 and 4 plug in cleanly without rewrites. Razorpay subscriptions, scoring logic, escalations, and AI calls would all live server-side with audit logs and cost controls built in. I have delivered 30 plus web platforms and 16 plus mobile apps, including subscription-based products with multi-role dashboards, payments, and automation. I am used to founder-led teams, fast feedback, weekly demos, and keeping everything clean inside the client’s GitHub org from day one. If this sounds aligned, share the spec document and tell me which part worries you most right now. I can review it quickly and suggest a clear build structure before we lock anything in. Best Regards, Sagar
₹320,000 INR in 33 days
0.0
0.0

Hello, I have been in the software development industry for over 3 years, specializing in building production SaaS platforms. I've not only integrated payment solutions into subscription products but also implemented complex multi-role authentication systems - just like what you're looking for in your Fitness Coaching SaaS Platform. To give you an idea of my work scope, I have successfully shipped more than one relevant project which I can gladly showcase as live URLs. With a strong focus on operational transformation, I'm confident that my expertise in AI automation and intelligent workflows will be a valuable asset in integrating the OpenAI/Claude API smoothly into your system. Over the years, I've developed a skillset that is tailored to efficient project delivery and cost-saving measures, which is crucial when it comes to implementing AI at scale. Best Regards, Habib Ullah.
₹200,000 INR in 7 days
0.0
0.0

Hi, Your post stood out because you're not building a typical fitness app. You're taking an already successful coaching business and turning it into a scalable SaaS platform. The focus here is on workflow efficiency, coach productivity, automation, and scalability. The combination of subscription management, onboarding, role-based workflows, AI-assisted plan generation, scoring systems, escalation rules, and analytics makes this a serious product build rather than a standard dashboard project. For AI integration, I would focus on prompt management, background processing, response caching, audit logging, and efficient model selection to keep costs under control as the platform grows. Before discussing budget and timeline, I'd like to understand: Is the scoring engine for Complexity Score and Success Score already fully defined? Do coaches need a structured plan builder for modifying AI-generated plans, or will rich-text editing be sufficient? Are mobile applications planned for future phases, or is the web platform expected to remain the primary product? Portfolio: https://www.freelancer.in/u/Rupal878 I would be interested in reviewing the specification document and discussing the architecture before providing a final estimate. Looking forward to hearing back from you and discussing this in the chat. Rupal Saini
₹200,000 INR in 7 days
0.0
0.0

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