Backend Engineer, Device Telemetry

About the role

Around eighteen thousand inverters and meters report to us every few minutes over connections that range from decent 4G to a rural link that works only at night. Your job is to make the numbers we show a customer trustworthy despite that.

The actual engineering problem

Readings arrive late, arrive twice, arrive out of order, or arrive with a clock that is three hours wrong because the device rebooted. A naive sum over that data produces a savings figure that is confidently incorrect, and a customer who stops trusting the product.

You will work on the ingestion pipeline, the deduplication and gap-filling logic, and the aggregation layer that produces daily and monthly figures. You will also build the alerting that tells a field engineer a panel string has failed rather than waiting for the customer to notice.

What we look for

Three to six years of backend engineering. Time-series or IoT experience is welcome but not required; what matters is that you think carefully about correctness with unreliable inputs and that you are comfortable with a database beyond simple CRUD.