Senior Site Reliability Engineer

StellarMettle is seeking a hands-on Senior SRE to support production applications and infrastructure across primarily on-premises Linux environments and hybrid AWS platforms. This role focuses on reliability, incident response, containerized applications, infrastructure automation, observability, and AI-assisted engineering.

The environment includes Docker/Docker Swarm, PostgreSQL, and Java/Spring Boot applications.

Key Responsibilities

• Maintain and improve production system reliability, availability, and performance across Linux servers and application infrastructure.
• Lead complex production incident investigations, troubleshooting issues across Linux, Docker, PostgreSQL, networking, and Java/Spring Boot applications.
• Support Docker-based deployments, including container configuration, service networking, resource utilization, and operational troubleshooting.
• Use logs, metrics, distributed traces, and JVM diagnostics to identify application and infrastructure performance issues.
• Implement and maintain monitoring, dashboards, and alerts using New Relic or comparable observability platforms.
• Lead root cause analysis and drive permanent corrective actions to reduce recurring incidents and improve system reliability.
• Develop and maintain Terraform infrastructure code, automation scripts, and operational tools using Bash, Python, or similar languages.
• Use AI coding agents such as Claude Code, OpenAI Codex, or equivalent tools for scripting, troubleshooting, code analysis, and infrastructure automation.
• Troubleshoot PostgreSQL issues involving queries, connection pools, database connectivity, locking, and performance.
• Support hybrid on-premises/AWS infrastructure, deployment processes, configuration management, and rollback procedures.
• Contribute to capacity planning, disaster recovery, system resilience, runbooks, and operational documentation.

Required Qualifications

• 5+ years of experience in SRE, DevOps, Linux systems engineering, or production infrastructure operations.
• Strong hands-on Linux administration and production troubleshooting experience.
• Production experience supporting Docker-based applications.
• Working knowledge of PostgreSQL and SQL troubleshooting.
• Experience troubleshooting Java applications and understanding JVM fundamentals.
• Hands-on Terraform experience.
• Experience with New Relic or a comparable monitoring/APM platform.
• Proficiency with Bash, Python, or similar scripting languages.
• Practical experience using AI-assisted coding or engineering tools for automation, troubleshooting, or infrastructure work.
• Strong understanding of TCP/IP, DNS, HTTP/HTTPS, and network troubleshooting.
• Experience leading production incident investigations and implementing root-cause fixes.

Preferred Qualifications

• Docker Swarm administration.
• AWS experience, including EC2, VPC, IAM, and CloudWatch.
• Java/Spring Boot and JVM performance troubleshooting.
• Terraform modules, Ansible, and CI/CD.
• High availability, disaster recovery, and SRE practices such as SLIs/SLOs.
• Experience applying AI agents to incident response and infrastructure automation.