Senior Automation Software Tester, MSR Team (Remote)

About the role

Mirantis, a Kubernetes-native AI infrastructure company, is looking for an experienced Senior Automation Software Tester for its MSR4 product team. Mirantis Secure Registry 4 is an enterprise-grade container registry built on the open-source Harbor project, offering tight security controls for cloud-native development. The role is remote.

Key responsibilities

• Contribute to the overall QA strategy for Mirantis Secure Registry, Kubernetes and cloud-native environments, aligning quality goals with business objectives and release deadlines.
• Evaluate and champion best-in-class testing practices and frameworks for distributed systems, and lead risk analysis and test planning for large-scale, multi-cloud registry and container orchestration.
• Architect test frameworks and infrastructure for microservices and infrastructure components in multi-cluster and hybrid-cloud environments, and design complex test scenarios covering production-like workloads, resource scaling, failure injection and recovery.
• Lead the development of scalable test automation integrated with CI/CD (Jenkins, GitHub Actions), using Kubernetes APIs, Helm and service mesh tools to cover system health, failover and network resilience.
• Promote infrastructure-as-code and make sure the test infrastructure code is repeatable, extensible and reliable.
• Mentor QA engineers and developers in risk-based testing, chaos engineering, performance and load testing, and act as the QA authority in design reviews, production readiness assessments and incident retrospectives.
• Establish quality gates and release readiness metrics, and advocate for a culture of quality across teams.

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.
• 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.
• Strong scripting and automation (Python, Pytest, Bash).
• Familiarity with Prometheus, Grafana, Jaeger, K6, RBAC, secrets management and cloud architectures (AWS, Azure, GCP).
• Advanced Linux knowledge: Bash scripting, systemd/logs, networking, Docker/containerd, kubectl, Helm, GitOps/Flux.
• Leadership, mentoring and strong communication with technical and executive audiences.

What we offer

• Remote-first, global and collaborative culture.
• Professional development, training and conference attendance.
• Customized workstation (macOS or Windows).
• Competitive compensation, performance incentives and opportunities for advancement.