Company
Eighty Days is building a new way to discover the world centred on taste, trust, and personal context. Today, travel discovery is fragmented across social media, search, and private conversations. We are creating a product that brings this together into a structured, map-based experience where recommendations are attributed, meaningful, and built over time.
Our focus is not just on helping people plan trips, but on becoming the place where they continuously save, organise, and revisit places that matter.
Website:

What you'll do
- Design, build, and own LLM-powered product features (chat and conversational modules, content understanding, recommendations) end to end on our NestJS/TypeScript backend: from product requirement, to production, to iteration based on real user behavior.
- Design and own the LLM interface layer: orchestration, tool calling, memory, evaluation, and the glue that makes agents and multi-step pipelines reliable in production.
- Work fluently across many LLMs (proprietary and open-source),



choosing and routing the right model for each job based on quality, latency, and cost.
- Develop and maintain RAG systems: embedding generation, vector search (Qdrant), hybrid retrieval with Elasticsearch and MongoDB, and grounding LLM responses in first-party data.
- Engineer for production performance: SSE streaming, prompt caching, token budgets, Redis-backed session state, SQS-based async processing, and observability.
- Build automated test suites and internal LLM evaluation tooling: regression tests for prompt and model changes, eval datasets curated from real user queries, and metrics for relevance, response quality, and groundedness.
- Translate business and product insights into working AI features, collaborating closely with the founder, backend engineers, and product.

What we're looking for
- 1.5+ years of software engineering experience with robust TypeScript/Node.js skills (NestJS preferred).
- Shipped at least one LLM-powered feature to

📌 AI Engineer (Mumbai)
🏢 Eighty Days
📍 Mumbai