Kustomer is looking for an Infrastructure Engineer to own cost optimization across our cloud and AI infrastructure. This role is mostly focused on driving down our AWS/infra and AI token spend, while keeping an eye on the AI tooling ecosystem that powers our platform. You'll sit on our Foundation team, partnering closely with engineering leadership to find, prioritize, and execute cost-saving initiatives without sacrificing performance or reliability.

If you love digging into a cost and usage report, right-sizing EC2 fleets, negotiating reserved capacity, or figuring out why an LLM call is burning 3x the tokens it needs to; this role is built for you.

This is a chance to own cost optimization as a function end to end; you'll set the strategy, build the tooling, and see it through from idea to impact.

Infrastructure & Cloud Cost Optimization

Own AWS cost optimization end-to-end: EC2 right-sizing, Reserved Instances/Savings Plans, spot usage, storage tiering, and unused resource cleanup

Build dashboards and reporting to track infra spend by team/service, and flag anomalies before they become expensive

Partner with engineering teams to identify and eliminate waste, think idle resources, over-provisioned instances, redundant environments

Drive architectural decisions that balance cost, performance, and reliability

Use Terraform to codify and enforce cost-conscious infrastructure standards

AI Token Spend Optimization

Analyze and reduce AI/LLM token spend across our AI-native platform, model right-sizing, prompt efficiency, caching, and routing strategies

Work with our Foundations team on developer tooling to build guardrails and observability around token usage

Software Engineer, Infrastructure (Optimization)

Responsibilities

Benefits

Company

Kustomer

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