Senior Automation Software Tester, MSR team

Mirantis

6d • Remote

About The Position

Mirantis is seeking an experienced Senior Automation Software Tester for the MSR4 product team. Mirantis Secure Registry (MSR) 4 is an enterprise-grade container registry solution that integrates with standard Kubernetes distributions to provide robust security controls for cloud-native development. Based on Harbor, an open-source CNCF graduated container registry, MSR can serve as the foundation for a secure software supply chain.

Requirements

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• 10+ years in software testing or quality engineering roles, with 4+ years focused on Kubernetes, cloud-native applications, and distributed systems.
• Proven leadership experience in building and scaling test strategies in enterprise-grade environments.
• Deep understanding of Kubernetes internals, cluster lifecycle management, Helm, service meshes (e.g., Istio or Linkerd), and network policies.
• Strong scripting and automation capabilities (Python, Pytest, Bash, etc.).
• Familiarity with observability stacks (Prometheus, Grafana, Jaeger), Kubernetes security (RBAC, secrets management), and performance benchmarking tools (e.g., K6).
• Solid grounding in cloud architecture (AWS, Azure, GCP), infrastructure provisioning, and containerized CI/CD.
• Moderate to advanced Linux knowledge and proficiency is required: Bash scripting and debugging, systemd/logs, networking/firewalling/routing, certificate/PKI management, containers (Docker/containerd), and Kubernetes tooling (kubectl/Helm with OCI registries, GitOps/Flux) to install, test, and troubleshoot multi-cluster environments.
• Exceptional problem-solving and architectural thinking.
• Experience influencing cross-functional teams and senior leadership.
• Excellent verbal and written communication skills for technical and executive-level audiences.

Nice To Haves

• Contributions to open-source Kubernetes or QA tooling projects.
• Experience implementing chaos engineering in Kubernetes environments.
• Certifications such as CKA, CKAD, or AWS Certified DevOps Engineer.

Responsibilities

• Contribute to driving 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.
• Lead risk analysis and test planning for large-scale, multi-cloud registry, infrastructure, and container orchestration.
• Architect test frameworks and infrastructure for validating microservices and infrastructure components in multi-cluster and hybrid-cloud environments.
• Oversee the design of complex test scenarios simulating production-like workloads, resource scaling, failure injection, and recovery across distributed clusters.
• Spearhead the development of scalable and maintainable test automation integrated with CI/CD (Jenkins, GitHub Actions, etc.).
• Leverage Kubernetes APIs, Helm, and service mesh tools to build comprehensive automation coverage, including system health, failover behavior, and network resilience.
• Promote test infrastructure-as-code and drive IaC forward on the team, ensuring infrastructure code is repeatable, extensible, and reliable.
• Mentor QA engineers and developers in advanced testing techniques such as risk-based testing, chaos engineering, performance, and load testing.
• Serve as the QA authority in design reviews, production readiness assessments, and incident retrospectives (escaped defects).
• Collaborate with devops engineers to refine monitoring, alerting, and debugging strategies for testing automation being run in CI/CD.
• Establish quality gates, release readiness metrics, and data-driven feedback loops to ensure released software is production quality.
• Drive initiatives to integrate performance, security, and chaos testing into the development lifecycle.
• Advocate for a culture of quality across teams and influence architecture decisions with testing in mind.
• Mentor and coach one or more junior members on the team, especially around testing fundamentals, troubleshooting, and automation.

Benefits

• Professional development and training.
• Attend conferences and working groups.
• Customized workstation (macOS, Windows).
• Competitive compensation, performance incentives, and opportunities for advancement.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior