Senior​/Site Reliability Engineer

Position: Senior/Staff Site Reliability Engineer
Overview  Circle (NYSE: CRCL) is one of the world’s leading internet financial platform companies, building the foundation of a more open, global economy through digital assets, payment applications, and programmable blockchain infrastructure. Circle’s platform includes the world’s largest regulated stablecoin network anchored by USDC, Circle Payments Network for global money movement, and Arc, an enterprise-grade blockchain designed to become the Economic OS for the internet.

Enterprises, financial institutions, and developers use Circle to power trusted, internet-scale financial innovation. Learn more at
What You’ll Be Part Of  Circle is committed to visibility and stability in everything we do. As we grow as an organization, we  expanding into some of the world  strongest jurisdictions. Speed and efficiency are motivators for our success and our employees live by our company values:
High Integrity, Future Forward, Multistakeholder, Mindful, and Driven by Excellence. We have built a flexible work environment where new ideas are encouraged and everyone is a stakeholder.
What You’ll Be Responsible For  As a Site Reliability Engineer at Circle, you’ll harness AI-powered insights to build and maintain our production infrastructure estate, enabling us to serve a rapidly expanding global customer base across multiple public cloud regions. You’ll apply your experience, technical expertise, and AI-enabled solutions to keep Circle’s products and core systems running consistently, reliably, and with top-tier performance.

In a fun, collaborative, and ever-evolving environment, you’ll have ample opportunities to develop new skills, partner with diverse and cross-functional teams across the organization, and stay on the cutting edge of technology.
What You’ll Work On   Empower agile development teams with a high-performance CI/CD pipeline, ensuring fast, high-quality releases with measurable performance and quality metrics.
Design, maintain, and secure cloud infrastructure using Infrastructure-as-Code tools like Terraform and Crossplane.
Automate operational tasks using Go, Python, and serverless solutions (AWS Lambda, Kubernetes Jobs).
Manage and monitor Kubernetes clusters for multiple production workloads.
Develop and maintain blockchain infrastructure, managing nodes across Ethereum, Solana, Arbitrum, Base, Avalanche, and others.
Ensure system reliability and security by participating in on-call rotations, troubleshooting disruptions, conducting root cause analysis, and collaborating with Security teams on security-focused tools and frameworks.
Plan, test, and implement disaster recovery strategies for a highly available microservices architecture.
Leverage AI-powered solutions for managing infrastructure, analyzing logs, detecting anomalies, capacity planning, maintaining performance, and optimizing performance.
Mentor and support team growth, fostering collaboration and scalability.
Team Structure and Role Levels  Here Is Our Team Hierarchy For Individual Contributors
Sr. Site Reliability Engineer (III)
Staff Site Reliability Engineer (IV)

What You’ll Bring To Circle (not All Required)  Senior Site Reliability Engineer (III)
4+ years in Dev Ops or SRE roles
3+ years in CI/CD platform development and microservices support
Strong observability, problem-solving, and performance optimization skills in complex, distributed systems
Hands-on experience with Blue-Green, Canary, and A/B Testing deployment strategies for services and databases; understanding of multi-region and multi-cloud architectures
Proficiency in Go, Python, and Shell
Proficiency in AI tools utilization to support daily activities
Excellent communication skills—able to break down technical concepts and foster collaboration
Observability, troubleshooting, and performance optimization skills in complex, distributed systems

Experience with :
Kubernetes clusters at scale, containerization, and Helm charts
Modern CI/CD platforms with complex gates and workflows
Distributed blockchain systems and blockchain full nodes
Networking (routing, DNS, load balancing, edge networking)
APM, RUM, monitoring, and telemetry tools
Database technologies (Postgre

SQL, Redis, Open…