Multi-Tenant ESG Reporting Backend with NestJS and AWS

ESG reporting is a workflow problem as much as a data problem: teams need applicability rules, evidence, consolidation, review, and approvals before a report is ready.

For OriginSustain, I built NestJS/TypeScript backend services, PostgreSQL and Redis/BullMQ processing, and AWS/Docker delivery with CI/CD. OpenAI API and RAG support part of the reporting flow. The screens here are from the product’s illustrative command center; the numbers are demo values, not client outcomes.

The full backend case study: https://contra.com/p/WvNXbmQR-origin-sustain-or-multi-tenant-esg-reporting-backend