Senior Site Reliability Engineer

Who you are

• 5+ years of experience in Site Reliability Engineering, DevOps, Infrastructure Engineering, or a closely related software engineering role supporting production systems
• Deep, hands-on Kubernetes expertise: designing, operating, securing, and troubleshooting production clusters and containerized workloads at scale
• Strong Terraform experience, including authoring reusable modules, managing state and environments, and delivering infrastructure changes through reviewable, automated workflows
• Production software-development experience in Go, Python, or JavaScript/TypeScript, with the ability to build maintainable backend services, tooling, and automation—not only scripts
• Demonstrated success improving the reliability, performance, scalability, or cost efficiency of distributed systems in production
• Experience with cloud infrastructure and core networking concepts, including IAM, DNS, load balancing, routing, service networking, and secure connectivity
• Strong observability and troubleshooting skills using metrics, logs, traces, alerting, and incident data to diagnose complex systems
• Experience defining and operating against SLIs, SLOs, error budgets, incident-management processes, postmortems, and disaster-recovery practices
• Familiarity with CI/CD, GitOps or deployment automation, and safe rollout strategies such as canary or blue-green deployments
• A security-minded approach to infrastructure and a track record of partnering effectively with Security and engineering teams in regulated or high-availability environments
• Clear written and verbal communication, strong ownership, and the judgment to balance speed, risk, and operational excellence
• Experience applying AI-assisted tooling to engineering or operations workflows is a plus

What the job involves

• As a Senior Site Reliability Engineer on Circle’s platform team, you’ll design, build, and operate the secure, scalable platform infrastructure behind critical digital-assets, AI, and application workloads
• You will bring an engineering mindset to production operations: writing and maintaining services and automation, developing reliable Kubernetes platforms, and using Terraform to make infrastructure repeatable, auditable, and easy to evolve
• You’ll work closely with platform, product, and application engineering teams to translate workload requirements into resilient technical designs across hybrid and public-cloud environments
• This role is for an experienced SRE or infrastructure engineer who enjoys solving hard distributed-systems problems, taking ownership of production outcomes, and raising the reliability, performance, security, and cost-effectiveness of the systems our customers depend on
• Design, build, and operate Kubernetes platforms that provide secure, highly available, and scalable foundations for critical production services across hybrid and public-cloud environments
• Build infrastructure as code with Terraform, creating reusable modules, safe delivery workflows, and well-governed infrastructure changes
• Develop backend services, internal tools, and operational automation in Go, Python, or JavaScript/TypeScript to eliminate manual work and improve the developer experience
• Partner with engineering and product teams to understand workload requirements and design pragmatic solutions for reliability, performance, capacity, security, and cost
• Improve the production lifecycle through reliable CI/CD, deployment automation, progressive delivery, and clear operational ownership
• Define and evolve observability practices across metrics, logs, traces, alerting, and dashboards so teams can detect issues early and troubleshoot effectively
• Own production reliability by participating in on-call, leading incident response, performing root-cause analysis, and driving blameless postmortems and durable corrective actions
• Establish and maintain reliability targets through meaningful SLIs, SLOs, error budgets, capacity planning, disaster-recovery testing, and resilience improvements
• Embed security and compliance into platform operations, partnering with Security to protect infrastructure, workloads, and data while meeting applicable regulatory requirements
• Apply AI-assisted and data-driven operational techniques to improve signal detection, reduce alert noise, accelerate root-cause analysis, and surface opportunities for automation
• Raise the bar for the team through thoughtful code reviews, documentation, knowledge sharing, and mentorship
• Mentor and support team growth, fostering collaboration and scalability

Benefits

• Remote-First and Flexible Work - Do your best work from home! Our remote jobs empower you to work around your life schedule. Want to switch up your work spot? We provide access to WeWork locations globally. Need time away? We offer flexible paid time off beyond paid holidays— so you can thrive at work and at rest.
• Health & Well-Being - No matter where you live, we offer a market competitive suite of benefits to help keep you and your loved ones healthy. We also keep your emotional well-being top of mind, offering an Employee Wellness Program for all employees and immediate family members globally. We also have various leave options, including 12 weeks of paid parental leave.
• Financial Planning - Circle is invested in your future! All part-time and full-time U.S. employees enjoy 401(k) benefits, including up to 4% company matching, and can become owners in Circle through our equity program. Pension plans are also offered in select countries. FSA and HSA accounts are available for U.S. employees, with Circle contributing annually to employee HSA accounts.
• Stipends & Reimbursements - To support our employees and their unique lifestyles, Circle offers a set of stipends and reimbursements (offerings vary by location and enrollment). These include home office, mobile phone, fitness and weight loss, and more!
• Learning & Development - Circle is committed to cultivating experiences internally and externally that promote constant learning in support of Crypto Literacy, as well as operational and interpersonal development that drives growth aligned with career aspirations for employees at all levels of the organization.
• In-Person Connections - Outside of our remote work, we know how important collaborating in-person is. We invest in bringing Circlers together through an annual company-wide conference, local meet ups as well as team and leadership offsites to lock in relationships beyond the screen.