Senior / Staff Site Reliability Engineer

About the role

Radar is looking for senior Site Reliability Engineers to own and improve its high‑throughput, data‑intensive production infrastructure that handles over 1 billion API calls per day from hundreds of millions of devices.

Key responsibilities

• Design, build, and maintain multi‑availability‑zone and multi‑region infrastructure on AWS using Terraform and EKS.
• Ensure 99.99%+ availability, optimize cloud costs, and participate in on‑call rotations.
• Manage large sharded MongoDB clusters on Atlas and support critical data pipelines built with Airflow, Scala, and Spark.
• Collaborate with customers and prospects to incorporate feedback into infrastructure improvements.

Required profile

• Proven experience managing production AWS environments with Terraform.
• Hands‑on experience with high‑availability Kubernetes deployments.
• Background in high‑growth startups and handling large read‑write workloads.
• Willingness to engage with customers and contribute to on‑call duties.

Required skills

• Terraform
• AWS (EKS, CloudWatch, CloudFront, etc.)
• Kubernetes
• MongoDB (Atlas)
• CI/CD with CircleCI
• Monitoring tools: Grafana, Pingdom, PagerDuty
• Programming languages: TypeScript, Rust
• Data pipelines: Airflow, Scala, Spark

What we offer

• Competitive salary and meaningful stock options
• 401(k) plan with 4% match
• New Flatiron office in NYC with catered lunches
• Unlimited PTO and comprehensive health benefits
• 12 weeks paid parental leave and commuter/fitness benefits