- 🏗️ A multi-tenant fleet & IoT telemetry platform — event-driven core on Kafka, Go ingestion hot path (500k rec/s/node target), per-tenant Postgres / TimescaleDB isolation.
- ⚡ Real-time data pipelines — MQTT (EMQX) → Kafka → stream forwarding, live traffic over SSE, device telemetry decoding.
- 💳 Billing & metering at scale — Stripe subscriptions, usage metering, dunning, quota enforcement.
- 🤖 LLM-backed features — FastAPI + vector search (pgvector).
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