Senior Site Reliability Engineer - CLO

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 circle.com.

What you’ll be part of:

Circle is committed to visibility and stability in everything we do. As we grow as an organization, we're expanding into some of the world's 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

The Site Reliability Engineer builds and maintains shared platform capabilities, common libraries, and infrastructure that help Circle teams ship secure, reliable software quickly. You will build and operate scalable microservices and the infrastructure behind reliable, secure APIs, improve the software delivery experience, and partner with Product and Engineering teams to design, test, deploy, and operate production systems.

You will also help teams safely adopt and operate AI-enabled tooling and workflows by engineering features for and maintaining Circle’s autonomous coding-agent orchestration platform. You will understand the operational characteristics and risks of AI services, integrate them into developer and operational workflows, and ensure appropriate reliability, observability, access controls, auditability, and cost management. You will troubleshoot production issues, document operational standards, and continuously improve the infrastructure and developer experience that enable Circle teams to move quickly with confidence.

What you’ll work on

• Build and operate scalable microservices, platform capabilities, and shared engineering libraries.

• Design, deploy, and maintain secure, reliable cloud infrastructure and Kubernetes-based services.

• Improve CI/CD pipelines, developer workflows, and software delivery automation across engineering teams.

• Engineer and operate Circle’s autonomous coding-agent orchestration platform and AI-enabled developer tooling.

• Implement observability, monitoring, incident response, and operational best practices for production systems and AI services.

• Partner with Product and Engineering teams to design resilient architectures and improve platform reliability.

• Continuously improve security, access controls, auditability, and cost optimization across cloud infrastructure and AI-powered workflows.

What you’ll bring to Circle

Core Requirements

• 3–6 years of professional software development experience using languages such as Golang, Java, JavaScript/TypeScript, Python, or Rust.

• Hands-on experience building and operating cloud-native applications on AWS or GCP, including Kubernetes-based infrastructure.

• Experience engineering and operating production workflow orchestration systems, developer platforms, or autonomous agent solutions.

• Experience integrating AI capabilities through APIs, SDKs, or workflow tooling while applying operational guardrails such as observability, access controls, auditability, evaluation, monitoring, and human approval where appropriate.

• Strong understanding of distributed systems, RESTful API design, SQL database design, schema modeling, and query optimization.

• Demonstrated commitment to writing clean, maintainable, well-tested code that supports continuous delivery and operational excellence.

• Bachelor’s degree in Computer Science or a related technical field, or equivalent practical experience.

Preferred Requirements

• Excellent communication skills with the ability to collaborate effectively across distributed engineering teams and clearly communicate technical concepts.

• Self-motivated with a growth mindset, a passion for learning new technologies, and the ability to thrive in a fast-paced environment while delivering high-impact software.

Circle is on a mission to create an inclusive financial future, with transparency at our core. We consider a wide variety of elements when crafting our compensation ranges and total compensation packages.

Starting pay is determined by various factors, including but not limited to: relevant experience, skill set, qualifications, and other business and organizational needs. Please note that compensation ranges may differ for candidates in other locations.

We are an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status, or any other protected status required by the laws in the locations where we hire. Additionally, Circle participates in the E-Verify Program in certain locations, as required by law.

Should you require accommodations or assistance in our interview process because of a disability, please reach out to accommodations@circle.com for support. We respect your privacy and will connect with you separately from our interview process to accommodate your needs.

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