ML & backend for an ambitious Al-Powered Hotel Search Engine (Astra)

Paris - France

Monthly Salary: Not Disclosed

Posted on: Yesterday

Vacancies: 1 Vacancy

Job Summary

Astra:

Name code for a new ambitious project of building an alternative to powered by Al.

Led by a team of seasoned founders (Tiller acquired by SumUp Zenly acquired by Snapchat)

Mission:

Build and evolve the backend that powers Astraan Al-driven search engine for hotels.

Youll work on transforming natural-language queries into structured searches managing hotel data

orchestrating Al calls and integrating external sources.

Key Responsibilities

Design and maintain search logic: Handle full flow from user query Al parsing DB filtering ranked hotel results.

Session & context management: Persist user search sessions filters and chat context across multiple screens (Home Search Hotel).

Integrate LLM reasoning: Orchestrate OpenAl API calls (or equivalent) for query understanding re-ranking and contextual responses.

Database management: Maintain and optimize Supabase (PostgreSQL) schemas for hotels amenities reviews and user sessions.

External data enrichment: Connect and normalize external APIs (eg. Google Places Tavily/Serper) for complementary data.

Performance optimization: Ensure low-latency search queries and scalable architecture (caching pagination indexing).

Required Skills

Core stack: Python (FastAPI) Supabase and PostgreSQL.

API design: Strong experience with REST APIs (GraphQL is a plus).

Al integration: Experience consuming LLM APIs (OpenAl Anthropic etc.) using RAG techniques and handling structured outputs (JSON schema).

Data modeling: Ability to design flexible hotel/search schemas and manage complex filters.

Session management: Familiar with persistent user context and conversational states.

Query interpretation: Ability to map natural-language queries into structured search parameters.

DevOps basics: Familiar with modern CI/CD Docker and deployment on Vercel Railway or Supabase Edge Functions.

Nice to Have

Knowledge of semantic search / embeddings / vector DBs (Weaviate Pinecone etc.).

Familiarity with Al orchestration tools (LangChain LlamaIndex n8n).

Understanding of prompt engineering and LLM function calling.

Basic frontend awareness (React/) to collaborate closely with Ul developers.

Experience in travel or marketplace data models (availability amenities geolocation).

Profile

10 years backend experience incl in startups and/or projects from scratch

Product-minded engineer who can balance speed and structure.

Curious about Al and conversational interfaces.

Comfortable iterating fast in a small design-driven and fast-pace startup environment.

Astra:Name code for a new ambitious project of building an alternative to powered by Al.Led by a team of seasoned founders (Tiller acquired by SumUp Zenly acquired by Snapchat)Mission:Build and evolve the backend that powers Astraan Al-driven search engine for hotels.Youll work on transforming natu...