About BuyBuildSell InfraTech:
We're an early-stage, self-funded startup building a unique AI-native platform for construction in India - design, manpower and material, brought together as one intelligent system. We're hiring the founding engineer who'll architect the AI at the center of it.

The Role:
This isn't a seat inside a large team executing a settled spec. As our founding AI engineer, you'll build the systems that take a client's plain-language request and turn it into real design options, specifications and material requirements - the kind of output a qualified could actually stand behind, not just something that looks convincing. What you ship in your first few months becomes the foundation everything else is built on.

What You'll Do:
Build the AI reasoning layer - LLM-based intent parsing, option generation, retrieval-grounded suggestions
Architect the deterministic engine - rules-based calculations for specs, quantities and cost, kept strictly separate from anything AI-generated
Own the full stack - backend, APIs, data, frontend and infrastructure, end to end,



with no platform team to hand off to
Ground the system in reality - work with our architects and structural engineers to encode real construction rules
Shape the roadmap - sit close to real usage and help decide what gets built next, not just how

Required:
B.Tech / B.E. in CS, AI/ML or related
2-5 years shipping production software
Hands-on LLM integration - prompt design, structured output, RAG fundamentals
Proven end-to-end ownership: backend, data, enough frontend/deploy to ship solo
Can explain, unprompted, why critical logic belongs outside an LLM call

Preferred:
Early or founding engineer experience at a startup
Exposure to construction, real estate or physical-world marketplaces
Computer vision or vernacular NLP exposure (part of our future roadmap)
Production RAG / vector search experience - not just tutorials

What We Offer:
Real architectural ownership - your early decisions become

📌 Artificial Intelligence Engineer (India)
🏢 Buybuildsell Infratech
📍 India