Principal Site Reliability Engineer

Business Unit

Cubic Transportation Systems

Company Details

When you join Cubic, you become part of a company that creates and delivers technology solutions in transportation to make people’s lives easier by simplifying their daily journeys, and defense capabilities to help promote mission success and safety for those who serve their nation. Led by our talented teams around the world, Cubic is committed to solving global issues through innovation and service to our customers and partners.

We have a top-tier portfolio of businesses, including Cubic Transportation Systems (CTS) and Cubic Defense (CD). Explore more on Cubic.com.

Job Details

Role Overview

Were seeking an experienced Site Reliability Engineer (SRE) to ensure our services are robust, scalable, secure, and maintainable. You will blend software engineering and systems operations to automate processes, monitor performance, lead incident response, and work closely with engineering teams to enhance service availability and reliability, while bringing efficiencies to operational processes. We’re looking for proactive problem-solvers with strong technical and communication skills who can also effectively support and troubleshoot project operational issues.

Key Responsibilities

• Design, deploy, and maintain scalable, secure applications and infrastructure in cloud or hybrid environments
• Implement and manage robust monitoring, alerting, and observability systems
• Automate recurrent operational tasks using scripts (e.g., Python) and Infrastructure-as-Code tools (e.g., Terraform)
• Collaborate with engineers to build highly available, reliable, deployable systems, establishing guardrails around SLOs, SLIs, and error budgets
• Own incident response by participating in on-call rotations, conducting RCAs, and implementing preventive measures and self-healing solutions
• Conduct performance tuning, capacity planning, and efficient disaster recovery design for strong Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO)
• Reduce manual toil in security compliance and patching processes through automation
• Support project teams in troubleshooting and resolving operational issues across development, testing, and production environments
• Provide guidance and operational support during project rollouts and infrastructure changes to ensure reliability and uptime
• Collaborate with senior stakeholders, internal and external, to communicate technical concepts, resolve problems, and influence decision-making on technical matters
• Work closely with the product team to stay informed about evolving system design, business logic, and transaction flows to ensure reliability and operational readiness across services
• Identify and address organization-wide gaps in the SRE domain and develop implementable solutions that contribute to reliability and operational excellence
  
  

• Bachelor’s degree in Computer Science, Engineering, or equivalent
• 12+ years as an SRE, DevOps, or related role managing large-scale solutions or platforms
• Proficient in scripting (PowerShell, Python, Go, Bash) and solid understanding of coding/development principles
• Hands-on experience with cloud platforms (AWS, GCP, Azure) and container orchestration (Docker, Kubernetes)
• Experienced with monitoring, logging, alerting, and observability tools
• Familiar with CI/CD pipelines and infrastructure tooling (e.g., Jenkins, GitLab CI/CD, Argo CD)
• Proficiency in Agile methodologies, such as SCRUM
• Strong problem-solving and debugging skills, especially in high-pressure, production-critical environments
• Strong collaboration and communication skills
  
  

• Experience with Terraform and other Infrastructure-as-Code tools
• SRE-specific certifications from AWS, GCP, or Azure
• Experience shaping and scaling SRE practices
• Experience mentoring teams and fostering a strong reliability culture across the organization