Hospitality platforms, boutique hotel groups, vacation rental marketplaces, and travel agencies frequently search to hire a freelance TravelTech, Hospitality PMS (Mews, Cloudbeds, Opera) & booking engine programmer. I am Aldian Fazrihady, a Senior Freelance Full Stack Developer and AI Application Engineer.

Core TravelTech & Hospitality Engineering Capabilities

  • Direct Booking Engines & Channel Manager Sync: Building high-converting Next.js direct booking flows with real-time availability, dynamic pricing rules, Stripe payment holds, and two-way PMS/OTA synchronization.
  • 24/7 Multilingual AI Concierge & WhatsApp Agents: Deploying AI guest messaging agents across WhatsApp, SMS, and web chat that handle reservation modifications, late check-out upsells, and local recommendations in English, Indonesian, Malay, Arabic, and European languages.
  • Concurrency-Safe Inventory Locking: Preventing double-bookings across concurrent checkout sessions using PostgreSQL exclusion constraints and Redis locks.

Frequently Asked Questions

How do you prevent two guests from booking the same room at the exact same second?

I use PostgreSQL GiST `EXCLUDE USING gist (room_id WITH =, daterange(check_in, check_out) WITH &&)` constraints combined with short-lived checkout reservation locks.

How do I hire you as a freelance TravelTech & booking engine programmer?

Hire me via Upwork.

About the Author — Hire Freelance Programmer Aldian Fazrihady

Aldian Fazrihady is a Top-Rated Senior Freelance Programmer, Freelance Full Stack Developer, and AI Application Engineer with 15+ years of production software engineering experience and Google Cloud Professional Cloud Architect & Data Engineer certifications. He specializes in building custom LLM & autonomous AI agents, RAG pipelines, Next.js/React PWAs, Python (Django/FastAPI), Go microservices, and serverless cloud infrastructure on Google Cloud Run and AWS.

Hire Aldian Fazrihady on Upwork | Book 1-Day Programming Service ($100 USD via Polar) | View Live AI Portfolio | Portfolio Directory | Send a Direct Message

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