Business-acquisition deal-flow alert platform

Problem

The client's principal was manually monitoring multiple online-business brokerage sites and losing time against competing buyers on good listings.

Solution

The team built five marketplace scrapers (authenticated and public APIs plus a stealth headless browser for a bot-protected site) running as hourly serverless functions, a Next.js/TypeScript web app with user and admin dashboards, Stripe subscriptions with plan changes and access gating, and a trigger-based matching engine that sends preference-matched email alerts. A later milestone migrated the database to a MongoDB-compatible document store and removed a paid search dependency in favour of native filtering.

Key features

• Five marketplace scrapers normalising price, revenue, profit, multiple, age and location
• Hourly scheduled serverless scraping with per-scraper admin controls
• User dashboard with all, matched and saved listings, favourites and stats
• Admin dashboard with user management and revenue/platform metrics
• Monthly and yearly subscription billing with upgrades, scheduled downgrades and access gating
• Preference-matched email alerts for new listings
• Mobile-first onboarding with range sliders backed by live distribution charts
• Card and list views with mobile bottom navigation
• Database migration to a MongoDB-compatible store replacing third-party search

Tech stack

• Algolia
• Firebase
• Firebase App Hosting
• Firebase Auth
• Firebase Cloud Functions
• Firebase Emulator Suite
• Firestore
• GitHub
• GoDaddy
• Google Cloud
• Google OAuth
• MongoDB
• Next.js
• Node.js
• Puppeteer
• React
• React Query
• Redux
• SendGrid
• Stripe
• TypeScript
• react-hook-form
• zod