Backend Developer – Django

The system ingests operational data, computes industrial KPIs, generates structured AI insights, and exposes deterministic APIs for a mobile application.
This role is strictly backend-focused. No frontend work. Backend Architecture. The platform is built on:
Django + Django REST Framework
PostgreSQL (ELT structure: raw → staging → analytics)
Celery + Redis (task orchestration)
Stripe (billing boundary, already scoped separately)
Docker-based deployment
Core architectural principles:
Multi-tenant isolation (organisation + site level)
Deterministic KPI recomputation
Append-only raw data layer
Strict schema validation for ingestion
Versioned KPI logic
AI outputs must be grounded in stored data
No autonomous AI actions (advisory only)
Backend Responsibilities (High-Level)
1. Data Ingestion Layer
Build robust CSV ingestion pipeline
Header validation and schema enforcement
Idempotent file handling (no duplicate ingestion)
Transform ...