QA Engineer – Backend Infrastructure (1-year fixed term contract)

Job Title QA Engineer – Backend Infrastructure Job Description QA Engineer – Backend Infrastructure Temporary position for 1 year About the Role We are looking for a highly motivated and technically curious QA Engineer to join our Backend Infrastructure team. In this role, you will be responsible for validating large-scale enterprise backend systems used in healthcare environments, ensuring their quality, reliability, performance, and operational stability. You will work closely with software engineers, DevOps, automation teams, and product stakeholders to validate complex distributed systems, investigate failures, improve testing strategies, and help deliver highly reliable software releases. This position is ideal for someone who enjoys understanding how systems work end-to-end, troubleshooting complex infrastructure issues, and validating real-world deployment scenarios across application, operating system, networking and database layers. Key Responsibilities System & Infrastructure Validation Design and execute functional, integration, system, regression, and end-to-end tests for backend infrastructure components. Validate distributed systems composed of multiple services, applications, and dependencies. Test installation, upgrade, migration, configuration, backup, and recovery workflows. Verify system behavior across single-server, clustered, distributed, and cloud-based deployments. Windows & IIS Testing Validate Windows-based applications, services, scheduled tasks, permissions, and operating system configurations. Test IIS-based applications, including application pools, bindings, TLS certificates, authentication mechanisms, and HTTP/HTTPS communication. Investigate service startup failures, configuration issues, connectivity problems, and deployment defects. Analyze Windows Event Viewer logs, IIS logs, application logs, and diagnostic data to identify root causes. Performance & Reliability Identify bottlenecks related to CPU, memory, storage, networking, databases, and service interactions. Validate system stability under resource exhaustion, service failures, network interruptions, and infrastructure outages. Participate in reliability improvement initiatives and post-incident investigations. Technical Investigation & Collaboration Reproduce, isolate, and troubleshoot complex customer and field-reported issues. Perform technical root-cause analysis and provide evidence-based findings. Work closely with development teams to identify failure points and verify fixes. Participate in design reviews and contribute to improving product quality throughout the development lifecycle. Required Qualifications . in Computer Science, Software Engineering, Information Technology, or equivalent practical experience. 3+ years of experience in software QA, preferably in backend, infrastructure, enterprise, or server-side systems. Strong understanding of software testing methodologies and test design techniques. Hands-on experience testing complex backend systems and integrations. Strong experience working with Windows operating systems and Windows Server. Experience testing Windows Services, service dependencies, permissions, configuration, startup, recovery, and troubleshooting. Experience working with IIS and web services, including: HTTP/HTTPS Application Pools Bindings TLS/Certificates Authentication and connectivity troubleshooting Solid understanding of networking fundamentals: TCP/IP DNS Ports Firewalls Client-server communication Experience with installation, upgrade, migration, and recovery testing. Experience using troubleshooting and diagnostic tools such as: Event Viewer PowerShell Log analysis tools Network diagnostic tools Scripting experience using Python, PowerShell, or similar technologies. Strong analytical, troubleshooting, and root-cause investigation skills. Excellent communication and collaboration skills. Preferred Qualifications Experience with Kafka, message brokers, or event-driven architectures. Experience with databases and database performance analysis. Experience with CI/CD pipelines and automated test execution. Experience with monitoring and observability platforms. Experience using packet capture and network analysis tools such as Wireshark. Experience debugging crash dumps and investigating production incidents. Experience with healthcare interoperability technologies: DICOM HL7 TLS/Security protocols Experience working in regulated healthcare or medical software environments. What We Are Looking For We are not looking for someone who simply executes test cases. We are looking for an engineer who: Wants to understand how the entire system works. Enjoys investigating complex infrastructure issues. Can independently debug failures across application, service, operating system, network, and deployment layers. Uses logs, diagnostics, and system behavior to narrow problems down to the most likely root cause. Proactively improves automation, tooling, monitoring, and overall software quality. You should be able to move from: "The system is not working" to "I reproduced the issue, analyzed the logs and system behavior, identified the failing component, and can provide evidence supporting the root cause and proposed fix." If you enjoy solving complex technical problems, working closely with engineering teams, and contributing to the reliability of enterprise-scale healthcare systems, we'd love to hear from you. Compensation & benefits Doing meaningful work should come with fair, transparent rewards. The base salary range for this role is [ 205,660.00 ]–[ 411,320 ] . We determine pay within the range using objective factors, like the skills the role requires, your relevant experience and the responsibility you'll have in this role, alongside internal equity and local market considerations. This role is eligible for [bonus] , with your rewards linked to [KPIs/company results] . We’ll share the full approach with you during the interview process, so you can make a clear, informed decision. Benefits include [key benefits] . How we work together We believe that we are better together than apart. For our office-based teams, this means working in-person at least 3 days per week. Onsite roles require full-time presence in the company’s facilities. Field roles are most effectively done outside of the company’s main facilities, generally at the customers’ or suppliers’ locations. About Philips Are you ready to do the work of your life to help the lives of others? Learn more about our business , discover our rich and exciting history and learn more about our purpose . If you’re interested in this role and have many, but not all, of the experiences needed, we encourage you to apply. You may still be the right candidate for this or other opportunities at Philips. Learn more about our culture of impact with care . #LI-EU