Senior Site Reliability Engineer

About the role

We're growing fast — and so is the demand on our infrastructure. We're hiring a Senior Site Reliability Engineer to help us scale Circle’s platform with confidence. You'll play a critical role in keeping our systems fast, reliable, and secure as usage climbs. This is a highly impactful, hands-on role for someone who thrives in high-growth environments and wants to build for the long term.

What you'll be doing

• Act as a first responder for system incidents and outages, helping Circle stay highly available and performant
• Own and evolve our monitoring, alerting, and log management systems
• Manage and optimize our database infrastructure (including MySQL, Postgres, Clickhouse, and Redis)
• Maintain and improve our server infrastructure and deployment pipelines
• Collaborate closely with engineering teams to build scalable, resilient systems
• Contribute to internal SRE tooling and automation efforts

What you'll need to be successful

• Strong alignment with our values
• You are proficient in English (spoken, written, and reading) at a CEFR Level C2 / ILR Level 5
• Deep expertise with AWS and Kubernetes
• 3+ years of experience in a Site Reliability, DevOps, or Infrastructure Engineering role
• Experience managing incident response and production system outages
• Hands-on experience with database operations and optimization
• Familiarity with observability tooling, monitoring, and logging best practices
• Based in North or South America (AMER region) — this is a requirement for timezone alignment with our team

Bonus points

• Experience with SOC2 compliance or building secure infrastructure
• You’ve helped scale an early-stage product to 1M+ monthly active users
• Experience with Clickhouse or similar technologies

The fun stuff

• Fully remote: work from anywhere in the world!
• Autonomy and trust to do your job: we care about outcomes over everything else.
• Paid time away: all employees are given 35 days of PTO annually. We also offer a paid sabbatical after 5 years.
• Generous U.S. benchmarked compensation and startup equity no matter where you are in the world