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 ownershi

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