Senior QA Engineer (L4) - Kubernetes & Cloud-Native Testing

About the role

Mirantis, an IREN company, is a Kubernetes-native AI infrastructure company. It is hiring a Senior QA Engineer (L4) to lead testing strategy, automation and quality assurance for Kubernetes and cloud-native environments. The position is remote and full-time.

Key responsibilities

• Drive the overall QA strategy for Kubernetes and cloud-native environments, aligning quality goals with business objectives and release deadlines
• Evaluate and champion testing best practices and frameworks for distributed systems, and lead risk analysis and test planning for large-scale, multi-cloud infrastructure
• Architect test frameworks and infrastructure for microservices and components in multi-cluster and hybrid-cloud environments, including complex scenarios such as failure injection and recovery
• Build scalable test automation integrated with CI/CD (Jenkins, GitHub Actions), covering system health, failover and network resilience using Kubernetes APIs, Helm and service mesh tools
• Promote infrastructure-as-code and make it repeatable, extensible and reliable
• Mentor QA engineers and developers in risk-based testing, chaos engineering, performance and load testing
• Serve as QA authority in design reviews, production readiness assessments and incident retrospectives, and collaborate with DevOps engineers on monitoring, alerting and debugging
• Set quality gates, release readiness metrics and feedback loops, and integrate performance, security and chaos testing into the development lifecycle

Required profile

• Bachelor's or Master's degree in Computer Science, Engineering or a related field
• 10+ years in software testing or quality engineering, with 4+ years focused on Kubernetes, cloud-native applications and distributed systems
• Proven leadership experience building and scaling test strategies in enterprise environments
• Experience mentoring at least one junior team member
• Preferred: contributions to open-source Kubernetes or QA tooling, chaos engineering experience, and certifications such as CKA, CKAD or AWS Certified DevOps Engineer

Required skills

• Deep understanding of Kubernetes internals, Helm, service meshes (Istio or Linkerd) and network policies
• Scripting and automation (Python, Pytest, Bash)
• Observability stacks (Prometheus, Grafana, Jaeger), Kubernetes security (RBAC, secrets management) and performance tools (K6)
• Cloud architecture (AWS, Azure, GCP) and containerized CI/CD
• Linux: Bash scripting, systemd/logs, networking, Docker/containerd, kubectl, Helm, GitOps/Flux

What we offer

• Work with an established Silicon Valley leader in cloud infrastructure
• Professional development, training, conferences and working groups
• Company outings, hackathons and tech talks
• Competitive compensation with a strong benefits plan