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What you’ll be responsible for:

As a Senior Site Reliability Engineer at Circle, you will design, build, and maintain Circle’s infrastructure estate to meet the growing worldwide customer base on public cloud providers across multiple regions. You will use your experience, knowledge, and skills to ensure Circle’s products and core systems are running consistently, reasonably, and in a performant manner. This is a unique opportunity to develop your skills, collaborate with cross-functional teams and continuously learn in a dynamic and fast-paced environment. Join Circle and join a fun, collaborative, and innovative team dedicated to delivering exceptional customer experiences.

What you'll work on:

• Support multiple development teams with an agile, responsive CI/CD platform to deliver high-quality builds with measurable performance and quality;
• Build, maintain, improve, scale, and secure cloud infrastructure and resources using IaC tools (Terraform, CloudFormation, Ansible);
• Automate operational tasks via Go, Python, and serverless solutions (AWS Lambda, Kubernetes Jobs);
• Design, manage, and monitor Kubernetes clusters for multiple production workloads;
• Driving forward our blockchain infrastructure by creating and managing blockchain nodes across a wide variety of blockchains that includes Algorand, Ethereum, Hedera, Flow, Solana, Stellar, Tron;
• Participate in an on-call rotation to mitigate disruption for any production systems and conduct root cause analysis;
• Plan and test disaster recovery scenarios for a highly available microservices architecture;
• Collaborate with the Security team to create and maintain security-focused tools and frameworks and exert a top-class security posture;
• Engaging and mentoring team members and helping grow and scale the team.

Here is our team hierarchy for individual contributors:

Staff Site Reliability Engineer (IV)

Senior Site Reliability Engineer (III)

What you’ll bring to Circle (not all required):

Senior Site Reliability Engineer (III)

• 4+ years in DevOps or SRE roles, with a focus on tooling, automation, and infrastructure on a major public cloud provider;
• Proficiency with coding and/or scripting with the following languages (Go, Python, Shell);
• You have at least 3 years of combined experience in building and maintaining CI/CD platforms and supporting agile engineering teams in building microservices;
• Experience with:
• • Building Docker images and deploying containers in Kubernetes clusters;
  • Any modern CI/CD platform with seemingly complex gates and workflows;
  • Blue-Green, Canary, and A/B Testing deployment strategies;
  • Distributed blockchain systems, running and maintaining blockchain full nodes;
  • Database technologies (PostgreSQL, Redis, OpenSearch);
  • Migrating and transforming large, complex datasets from diverse sources, structures, and formats;
  • Data warehousing tooling and services (Apache Airflow, AWS DMS, Snowflake);
  • Knowledge of networking routing, DNS, load balancing, and edge networking;
  • Knowledge of APM, RUM, monitoring, and telemetry tools;
  • Helm charts and deploying and maintaining Kubernetes clusters;
  • Authoring and maintaining IaC with Terraform and using IaC to deploy resources in AWS, Azure, GCP, or any other public cloud providers;

• Strong skills around observability, troubleshooting, and performance solutions;
• Ability and eagerness to deep dive into understanding, debugging, and improving any layer of the tech stack;
• Exhibit strong communication skills and ability to explain technical concepts to peers and stakeholders.

Staff Site Reliability Engineer (IV)

All the requirements of a Senior Site Reliability Engineer and:

• 7+ years in DevOps or SRE roles, with a focus on tooling, automation, and infrastructure on a major public cloud provider;
• Led teams technically on architecture and system design;
• Deep understanding/experience with:
• API design and REST principles;
• Cloud services (AWS, Google Cloud, Microsoft Azure, etc);
• Containers and Kubernetes;
• SQL databases and designing schemas;
• Deep focus on coding standards and code quality -- a desire to have excellent test coverage.