Prague Employment

Mirantis is hiring a Senior Automation Software Tester, MSR team

About the Role

Mirantis is seeking a Senior Automation Software Tester to join the Mirantis Secure Registry (MSR) 4 product team. The candidate will lead QA strategy, architect test systems, and drive automation in Kubernetes and cloud-native environments to ensure production-quality software delivery.

What You'll Do

  • 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 making sure the 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 etc.
  • 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.

What We're Looking For

  • Experience in testing distributed systems and containerized environments.
  • Familiarity with Harbor and CNCF projects.
  • Knowledge of Kubernetes APIs, Helm, and service mesh tools.
  • Experience with CI/CD pipelines using Jenkins or GitHub Actions.
  • Background in test infrastructure-as-code and Infrastructure as Code (IaC) practices.
  • Experience mentoring QA engineers and developers in advanced testing techniques.
  • Involvement in design reviews, production readiness assessments, and incident retrospectives.
  • Experience collaborating with DevOps engineers on monitoring, alerting, and debugging strategies.
  • Ability to lead risk analysis and test planning for multi-cloud environments.
  • Proven track record in driving automation and scalability in test systems.
  • Strong understanding of cloud-native development and security controls.

Technical Stack

  • Kubernetes
  • Helm
  • Service Mesh
  • Jenkins
  • GitHub Actions
  • Harbor
  • CNCF
  • Container Registry
  • CI/CD
  • Infrastructure as Code (IaC)
  • Microservices
  • Distributed Systems
  • Cloud Native

Team & Environment

  • MSR4 product team
Required Skills
KubernetesHelmService MeshJenkinsGitHub ActionsHarborCNCFContainer RegistryCI/CDInfrastructure as Code (IaC)Automation TestingSoftware TestingMSR KubernetesHelmService MeshJenkinsGitHub ActionsHarborCNCFContainer RegistryCI/CDInfrastructure as Code (IaC)Automation TestingSoftware TestingMSR
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About company
Mirantis
Mirantis is a Kubernetes-native AI infrastructure company that enables organizations to build and operate scalable, secure infrastructure for modern AI, machine learning, and data-intensive applications across various environments.
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Job Details
Category qa_testing
Posted 2 hours ago