Full-Stack Developer for Pro Networking App - 20/06/2026 13:29 EDT

₹1250-2500 INR / hour

Closed

Posted 7 days ago

₹1250-2500 INR / hour

Full-Stack Developer — Backend Integration for Professional Networking Web App (Supabase + Netlify) PROJECT DESCRIPTION We've built a fully-designed, fully-functional front-end for a professional networking and career-development web app — think a premium, ad-free professional community with AI-powered career tools, structured messaging, and skill-based cohorts. The entire UI/UX is complete: a single HTML/CSS/JS file (~780KB) with 12 distinct sections (profile, networking, community, career prep, AI tools, messaging, and more), already deployed on Netlify and connected to GitHub for auto-deploy. What's missing is the backend. Right now everything is cosmetic — signup, login, profiles, and messages all reset on page reload because there's no database or authentication behind them. We need a developer to wire the existing front-end to a real backend so it becomes a fully functional product. This is an ongoing, hourly engagement, starting with a defined first phase (~80-90 hours) and continuing into lighter ongoing maintenance afterward. We're looking to get the first phase done in 3-4 weeks. WHAT YOU'LL BE BUILDING Real user authentication (signup, login, sessions) using Supabase Auth, including mobile OTP verification (Twilio or Supabase Phone Auth) Database schema design in Supabase/PostgreSQL — users, profiles, messages, cohort posts, feedback, subscriptions Profile persistence — save/load profile data, public shareable profile URLs A messaging system with 8 distinct message categories, inbox/sent views, stored and retrievable A serverless proxy function (Netlify Functions, Node.js) to securely route AI tool calls to the Anthropic API — keeping the API key server-side, with basic rate limiting Cohort posting — members can post to their cohort feed, with light moderation A content publishing flow (submit → approve → publish) for a curated insights/perspectives section Premium feature gating tied to subscription status Payment integration via Razorpay (subscriptions + one-time purchases) Row-level security in Supabase so users can only read/write their own data End-to-end testing across devices TECH STACK JavaScript (vanilla — no framework, single-file architecture) HTML5 / CSS Node.js (for serverless functions) Supabase (PostgreSQL, Auth, Storage) Netlify (hosting + serverless functions, already set up) REST API integration (Anthropic API, Twilio, Razorpay) Git / GitHub (repo already set up, auto-deploy connected) WHAT WE'LL PROVIDE A detailed technical brief covering the existing architecture, all element IDs/function names you'll need to hook into, and a full task breakdown with time estimates Full access to the existing codebase, GitHub repo, and Netlify project Clear specs on the data model we're expecting (user roles, message categories, subscription tiers) Fast turnaround on questions — we're hands-on and responsive throughout IDEAL CANDIDATE Strong hands-on experience with Supabase (or comparable BaaS — Firebase experience also considered) Comfortable working within an existing vanilla JS/HTML codebase without needing to migrate it to a framework Experience with payment gateway integration (Razorpay preferred, Stripe acceptable) Has built authentication flows end-to-end before — not just followed a tutorial Can work independently once given clear specs, and communicates proactively if something is ambiguous Based in or comfortable with IST working hours for reasonably overlapping availability Please share examples of similar projects you've completed — ideally something involving Supabase auth + a payment integration — when you apply.

Project ID: 40528048

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21 freelancers are bidding on average ₹1,674 INR/hour for this job

@santoshkumars17

As a seasoned Full-Stack Developer with over five years of industry experience, I believe I am the perfect fit for your professional networking web app project. My proficiency in both frontend (including HTML, CSS, JavaScript) and backend (Node.js) development, aligns with your requirements to bridge the gap in your fully-designed front-end and integrate it seamlessly with a backend. Being well-versed in JavaScript, I can work within the existing vanilla JS codebase without migrating it to a framework, thus ensuring efficiency and timely project completion. I hold expertise in several critical areas relevant to your project such as API integration, database management, and performance optimization — skills that will be pivotal as we work together to implement robust Supabase functionalities like user authentication, database schema design, messaging system etc. I have also worked on payment gateway integrations before (including Razorpay and Stripe), which will play an essential role in adding premium features and monetization to your application. Over my career, I have consistently delivered clean and optimized code while adhering to strict timelines

₹1,250 INR in 40 days

5.0

(25 reviews)

5.7

@redspector

You mentioned real user authentication with Supabase and mobile OTP that means token refresh and session consistency across Netlify edge functions must be handled from day one or users will be logged out on every navigation. In a recent project I hardened a Supabasebacked SaaS, cutting authrelated downtime by 99.9% and delivering full profile persistence within three days. First 24hours Ill audit your current Netlify deploy, set up Supabase Auth redirects and configure secure JWT storage to guarantee seamless login flows. Quick question do you plan to use Supabase Edge Functions for message routing, or will the Node.js API on Netlify handle it? That determines the architecture for realtime messaging. Now about the backend of your Pro Networking app - I'm experienced in Supabase which includes both PostgreSQL and User Authentication module like the one you need for this project. I've built authentication flows from scratch before, so not only will I deliver what's outlined but also ensure all users remain logged in seamlessly, without having to compromise on performance or security.

₹1,875 INR in 40 days

5.0

(3 reviews)

4.4

@bpatidar2793

I can jump directly into your existing Netlify + Supabase architecture without requiring a framework migration. The project already has the most expensive part completed—the UI/UX and user flows—so my focus would be transforming the current front-end into a production-ready platform by implementing authentication, database design, messaging, cohort feeds, subscription management, and secure AI integrations. I have experience building Supabase-backed applications with Row Level Security, payment gateways, serverless APIs, and role-based access controls. My approach is to deliver the Phase 1 scope incrementally with frequent deployments, ensuring every feature is tested and production-ready while preserving your current single-file architecture.

₹1,875 INR in 40 days