BuyBuildSell InfraTech unifies design, manpower and material into one intelligent platform. As founding engineer, you'll architect the AI systems at its core - turning a client's plain-language request into design options, specifications and material requirements people can actually build from. Not a seat on a large team executing a settled spec: the systems you ship in month one become 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.

~ Qualifications:

• 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 (future roadmap).

• Production RAG / vector search experience - not just tutorials.

Skills:- Large Language Models (LLM), RESTful APIs, Python, TypeScript, Architecture, Retrieval Augmented Generation (RAG), Agentic AI and Prompt engineering

📌 AI Engineer (Delhi)
🏢 Buybuildsell Infratech
📍 Delhi