# Cloud Efficiency Engineer (AWS/FinOps) at Buildkite

- Company: Buildkite
- What the company does: The fastest CI for AI workflows at scale nothing else survives. Leading software teams across industries have standardized on Buildkite for CI and orchestration. Backed by General Catalyst.
- Company website: https://buildkite.com/
- Type: Startups
- Level: Mid level
- Location: ANZ Region
- Work setup: On-site
- Posted: 2026-09-09
- Apply by: 2026-10-24
- Apply: https://job-boards.greenhouse.io/buildkite/jobs/5419114008
- Page: https://www.1752.vc/careers/jobs/buildkite-cloud-efficiency-engineer-aws-finops/

## About the role

Every build, test, and deployment our customers run costs us something. Right now we can see the top-line number — our AWS and Datadog spend — and we can see revenue. What we can't see clearly enough is the line between them: which operations drive our cost of goods sold, how that changes as customers scale, and which changes would move it.

## What they're looking for

- Trace cost signals to their technical causes — down to customer-level job costs & state machine changes, GraphQL cost by function, and per-operation unit economics — rather than stopping at service-level totals
- Build and maintain cost models for our most common and most expensive operations, so that when the shape of our traffic changes, we can explain what it does to our margin before the invoice arrives
- Rank the opportunities into a defensible portfolio: expected saving, risk, effort, and who has to be involved
- Implement safe, measurable optimisations yourself where the change sits in code or configuration you can own
- Partner with the engineering teams who own affected systems on the larger work, bringing them evidence rather than an edict
- Drive Datadog and observability efficiency alongside AWS — the second-biggest lever, and often the faster one

Tags: Engineering