Senior Real-Time Cloud Reliability Engineer

cloudzero; Boston (MA); On-site; USD 150,000 - 210,000; Full time

Job summary

CloudZero is seeking a Senior Site Reliability Engineer to own the reliability, performance, and observability of its real-time ingestion path. You will drive SLOs, instrument systems with data-driven debugging, and automate deployments across a scalable, serverless architecture.

This role focuses on building reliable infrastructure, reducing incident impact, and enabling product teams to ship features that optimize customer cloud spend. On-call rotates lightly as CloudZero scales.

Qualifications

• Strong production Python as primary language, scale-tested.
• Own reliability outcomes with ownership beyond tasks.
• 5+ years building and operating distributed systems in AWS.
• Experience with asynchronous, event-driven systems and back-pressure.
• Familiarity with observability and monitoring tools at scale.

Responsibilities

• Own the reliability, performance, and observability of real-time ingestion path.
• Sign off on critical paths, manage error budgets, and call pauses when needed.
• Instrument systems to surface failures with data-driven debugging.
• Build and integrate load generators, fault-injection, and SLO libraries.
• Design CloudFormation and SAM modules for reliable cloud resources.
• Automate deployments, scaling, backups, and limit changes across services.

Skills

Python

SRE

Distributed systems

Kafka/Kinesis

Observability

AWS

On-call ownership

Education

Bachelor's degree in Computer Science or equivalent

Tools

CloudFormation

SAM

Terraform

Pulumi

Datadog

Prometheus

Sumo Logic

Splunk

CloudWatch

Job description

CloudZero is seeking a Senior Site Reliability Engineer to own the reliability, performance, and observability of its real-time ingestion path. You will drive SLOs, instrument systems with data-driven debugging, and automate deployments across a scalable, serverless architecture.

This role focuses on building reliable infrastructure, reducing incident impact, and enabling product teams to ship features that optimize customer cloud spend. On-call rotates lightly as CloudZero scales.