Sr. Full-stack Developer - FT Freelance - Worldwide

Hi, we’re Overgo! We help people select and book the right hotel using natural language and AI. Built for discerning travelers who value both high-tech and high-touch service, Overgo makes discovering a hotel feel as effortless as having a conversation. We’re backed by the leadership of Booking.com and other industry innovators, giving us both credibility and momentum as we scale. Our mission is to blend the best of technology and hospitality — using AI not to replace the human touch, but to elevate it. If you thrive on autonomy, creativity, and the chance to shape an early-stage product that’s redefining luxury travel, we’d love for you to join our team.

Role Overview

We’re looking for a scrappy, fast-moving Rapid Prototype Engineer who can help us bring Overgo’s MVP live by October 1st. You’ll be responsible for standing up this prototype end-to-end: AWS infrastructure, backend orchestration, AI-driven chat, and a user-friendly booking flow. On the frontend, you’ll build the UX layer in Streamlit and integrate a white-label booking experience inside a branded single-page application (SPA). On the backend, you’ll connect to travel/booking APIs, orchestrate AI reasoning, and ensure the system feels seamless to users.

This is a hands-on role working closely with leadership and a product designer to make sure the MVP is not just functional, but intuitive and market-ready.

Responsibilities

• Build the front-end UX layer of Overgo’s discovery and booking flows in Streamlit, ensuring it is intuitive and user-friendly for the go-to-market MVP (October 1).
• Connect backend booking and payment engine (Nuitee LiteAPI) and display results interactively.
• Provision and manage AWS infrastructure with Terraform IaC and Vault-backed secrets (or AWS Secrets Manager if simpler).
• Build a Python backend (Tornado or equivalent) to orchestrate:
• AI models via AWS Bedrock (Claude Sonnet) with spend caps.
• Qdrant Cloud for embeddings and retrieval.
  -3rd-party travel/booking APIs for availability and pricing.
• External search APIs for reviews and content ingestion.
• Implement a Streamlit chat UI that drives the AI travel assistant.
• Integrate a white-label booking UI into the branded SPA frontend.
• Add observability with Better Stack Logs (logging/alerts) and PostHog (analytics).
• Write lightweight unit + integration tests; enforce CI/CD with GitHub Actions.
• Document architecture, infrastructure, and developer workflows for handoff.

Key Technologies

• Cloud & IaC: AWS (EC2, S3, CloudFront, Route 53, RDS), Terraform, Vault
• Backend: Python (Tornado, Streamlit), Postgres
• Frontend: React SPA, Streamlit, white-label booking UI
• AI/Data: AWS Bedrock (Claude), Titan embeddings, Qdrant Cloud, Nuitee LiteAPI, Search APIs
• Tooling: GitHub Actions, Docker/ECR, Better Stack, PostHog, Parea.ai
• Auth: Nuitee LiteAPI

Success in This Role

By early Fall 2025, the MVP is live with:

• A branded SPA frontend embedding a white-label booking UI.
• An AI-powered chat assistant via Streamlit, backed by Bedrock + Qdrant.
• A backend that orchestrates booking API queries and search results into the AI flow.
• Infrastructure managed in Terraform, secrets in Vault, deployed via GitHub Actions.
• Logging and analytics active (Better Stack, PostHog).