Senior Backend Data Engineer — AI-Driven, Multi-Tenant

3Pillar is seeking a Senior Backend / Data Engineer to design and build the core backend and data foundation for AI-driven platforms. You will architect multi-tenant databases, asynchronous services, and robust data pipelines while writing OpenAPI specs to guide cross-functional teams.

You will collaborate with AI/LLM leads and product leadership to ensure secure, scalable, and reliable data processing across distributed environments.