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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Automation Software Tester - **Company:** Mirantis Secure Registry (msr) 4 - **Location:** Madrid, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Testing (Software), Kubernetes Security, Adobe InDesign, Application Programming Interfaces (APIs), Amazon Web Services, Automation of Tests, Microsoft Azure, Bash Shell, Cloud Computing, Cloud Engineering, Computer Networks, Continuous Integration, Software Debugging, Linux, DevOps, Distributed Systems, Github, Python (Programming Language), Key Management, Load Testing, Routing, Public Key Infrastructure, Role-Based Access Control, Reliability Engineering, Prometheus, Robotic Automation Software, Strategies of Testing, Google Cloud, Spring Cloud, Istio, Grafana, Multi-Cloud, HybridCloud, Pytest, Kubernetes, Infrastructure Automation Frameworks, Information Technology, Linkerd (Service Mesh), Oracle Cloud Infrastructure, Docker, Jenkins, Microservices - **Published:** September 20, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role Bachelor's or Master's degree in Computer Science, Engineering, or a related field. Experience 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. Technical Proficiency 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, andcontainerized 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. Mentorship and coaching of 1 or more junior members on the team especially around testing fundamentals, troubleshooting and automation. ## Description 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. Architecting Test Systems 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. Automation & Scalability 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. Mentorship & Technical Influence 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. Quality Advocacy & Continuous Improvement 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. ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Enabling automated 1-click customer deployments with built-in quality and security](https://www.wearedevelopers.com/videos/83-enabling-automated-1-click-customer-deployments-with-built-in-quality-and-security) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Rate-limiting using eBPF and Istio: How to protect your SaaS customers from themselves](https://www.wearedevelopers.com/videos/100220-rate-limiting-using-ebpf-and-istio-how-to-protect-your-saas-customers-from-themselves) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers)