Senior Software Engineer- Site Reliability

Job title: Senior Software Engineer- Site Reliability

About the Role As a Senior Site Reliability Engineer (SRE) at Kensho (S&P Global), you will be a hands-on technologist blending infrastructure expertise with software engineering to ensure the reliability, scalability, and security of production systems and customer facing services. You will own production systems end-to-end, design resilient architectures, and automate operations in a 24/7 on-call environment.

What You'll Do

• Own and operate production services supporting critical financial applications with focus on availability, performance, and reliability
• Design, build, and manage AWS infrastructure, including EKS clusters, across lower and production environments
• Provision and manage infrastructure using Terraform (Infrastructure as Code) with an automation-first mindset
• Deploy, scale, and troubleshoot applications on Kubernetes (including cluster creation, upgrades, lifecycle management)
• Build and maintain Python-based automation frameworks to reduce operational toil
• Monitor system health using metrics, logs, and alerts; tune alerts, dashboards, and runbooks
• Troubleshoot complex issues spanning clusters, networking, certificates, deployments, and application behavior
• Manage certificate lifecycle and expiration for secure service operation
• Collaborate with InfoSec, Vulnerability Management, and Network Security teams
• Collaborate with L1/L2 teams, leading on-call and incident response, root-cause analysis, and remediation
• Review new services for production readiness, resiliency, and secure design prior to release
• Establish production readiness standards, including deployment strategies, rollback plans, and observability
• Optimize infrastructure cost and resource utilization without compromising reliability

What We're Looking For

• 6+ years of experience in SRE, DevOps, Platform, or Infrastructure Engineering roles
• Strong software engineering background with hands-on Python for automation, tooling, and reliability
• Experience building or supporting scalable, distributed systems in production
• Deep experience with AWS, including IAM, networking, and access controls
• Hands-on with Kubernetes (EKS preferred): cluster creation, deployments, scaling, and troubleshooting
• Solid understanding of networking fundamentals (VPCs, routing, DNS, load balancing, security groups)
• Experience with CI/CD pipelines, deployment tools, and infrastructure automation
• Working knowledge of databases and query optimization, and understanding how applications behave under load
• Familiarity with Kafka or other messaging systems
• Comfortable conducting code reviews and participating in coding interviews
• Strong operational mindset with incident management and on-call rotations
• Clear communicator and collaborative teammate who values documentation and knowledge sharing

Nice to Have

• Demonstrated ownership of large-scale production systems
• Strong examples of Python-based automation or internal tooling
• Contributions to open-source projects, infrastructure platforms, or reliability tooling
• Experience working closely with security and compliance teams in regulated environments
• Technologies often used in this space such as AWS, EKS, Terraform, Jsonnet, Kubernetes, Helm, CI/CD tooling, Python, Prometheus, Grafana, PostgreSQL, Kafka, Linux

Compensation & Benefits Details not specified in the posting.