Senior Software Engineer, Query

CircleCI

Remote · United States$13,750–21,250 gross/mofull-timeCircleCI Careers

At CircleCI, our guiding principles aren't posters on a wall. We learn fast: we run experiments, accept failure, and scale what works.

Responsibilities

Build AI-natively. AI is how we work. It's not a productivity layer on top of engineering, but the default starting point for how problems get approached and solved.
Shape how we store data at scale.
Own and harden our ClickHouse-based storage layer.
Design schemas for known and emerging access patterns, and tune ingestion and query performance to support production-scale data.
Build the pipelines that move our data.
Design and own ingestion from event streams and durable workflows built on Temporal. Data should arrive reliably, stay queryable while it's in transit, and never slow down the critical path of the services that produce it.
Serve data to the product and to customers. Evolve our platform into the default path for historical queries. Make getting historical data easy, not a bottleneck. Teams should be able to get what they need quickly and with minimal hand-holding, while Query keeps enough visibility into how the data is used to optimize…
Build in the indexing, caching, and tiered storage required to keep it performant.
Set technical direction. When the problem is complex or the answer isn't obvious, you lead the design discussion, write up the architecture decision, and make the call. You help decide which data domain we migrate next and how.
Champion observability. Use Honeycomb, Datadog, and Rollbar to understand ingestion lag, query latency, and data correctness. For a data platform, operational data drives stability, not just incident response.