Backend Developer (Python/FastAPI)

About Techfnatic
We're building a Real Estate Construction OS - a platform that brings project management, operations, and intelligence together for the construction industry. We're a small, fast-moving team shipping real product to real users, and we're looking for a backend developer who wants ownership, not tickets.

What you'll do
Design and build backend services and APIs using Python (FastAPI)
Own data modeling and queries across PostgreSQL and MongoDB
Build and integrate LLM-powered features into the product using frameworks like LangChain, LangGraph, and CrewAI
Design and deploy on AWS serverless (Lambda, API Gateway, SQS, DynamoDB/S3) and server-driven architectures
Work closely with the founding team on architecture decisions, from schema design to deployment
Write clean, tested, maintainable code and ship fast

What we're looking for
1.5-2 years of backend development experience in Python, with production FastAPI experience
Strong SQL fundamentals and hands-on experience with PostgreSQL and MongoDB
Working knowledge of LLMs and the AI tooling ecosystem - you've built with or experimented seriously with LangChain, LangGraph, or CrewAI
Experience with AWS serverless services and understanding of server-driven architecture patterns
A team player who communicates well, takes feedback, and cares about what gets shipped
Comfortable in a remote setup, open to hybrid down the line

Nice to have
Experience with RAG pipelines, vector databases, or agentic workflows
Exposure to construction, real estate, or B2B SaaS domains
CI/CD and infra-as-code familiarity

Why join us
Early team, direct ownership of core systems
Work at the intersection of AI and a massive underserved industry
Remote-first for now, flexible ways of working