← All roles

Cloud Efficiency Engineer (AWS/FinOps)

Buildkite· Engineering
Apply on company site
Hybrid (ANZ / PST)full-timePosted 1mo ago

About the role

Hands-on engineering role owning Buildkite's cloud efficiency picture end to end, tracing COGS signals to technical drivers, building cost models, and driving measurable optimisations in AWS/Datadog observability while maintaining reliability and customer experience.

Responsibilities

  • 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.
  • Build and maintain cost models for our most common and most expensive operations.
  • Rank opportunities into a defensible portfolio with expected saving, risk, effort, and stakeholder involvement.
  • Implement safe, measurable optimisations in code or configuration you own.
  • Partner with engineering teams on larger work, bringing evidence.
  • Drive Datadog and observability efficiency alongside AWS.
  • Establish baselines before changes and verify realised savings in production, with auditable numbers.
  • Build guardrails and tooling — attribution, alerting, cost visibility — to catch regressions automatically.
  • Translate between engineering and Finance to align technical changes with financial outcomes.

Qualifications

  • Delivered meaningful, measured AWS savings in a scaled production environment with a detailed walkthrough (baseline, diagnosis, changes, trade-offs, verified result).
  • Working engineer who reads and writes code and ships changes.
  • Strong systems diagnosis skills for tracing ambiguous signals to precise causes.
  • Sound trade-off judgment balancing savings with reliability risk.
  • Ability to influence multiple teams and drive changes outside direct management.
  • Strong numerical rigor and ability to prove results and savings, with openness to AI-assisted methodologies.

Skills

Required:AWS cost optimizationDatadog observabilityCost modellingData analysisCross-functional collaboration

Benefits

  • Work from anywhere in the world for up to 6 weeks a year (remote)
  • 20 days paid annual leave + 10 days sick & carer’s leave
  • 16 weeks paid parental leave for primary carers (6 for secondary)
  • Remote-work allowance for home-office setup
  • Confidential EAP & mental health support
  • Support for learning and growth (conferences, courses, coaching)
  • Retirement and health coverage (region-dependent)
Last updated Sep 9, 2026. Interested? Apply on the company site.
Buildkite logo

About Buildkite

Deliver software at any scale with the world’s fastest CI platform

Deliver like the world’s leading software companies. Our platform provides a toolkit to power the sophistication of today’s platform teams.

CI platformsoftware deliveryautomationtestingsecurity
Company profileWebsite

More open roles at Buildkite