At IDQ, we change the world, one photon at a time. We harness light to develop and industrialize the most advanced quantum products and technologies and help to build long-term trust. We offer quantum key distribution systems and quantum random number generators, and with them we provide the highest level of future-proof security. At IDQ, we have an unwavering commitment to quality and integrity with strong corporate governance based on the following values: transparency, respect, long-term trust, accountability, and courage.As we continue to grow and advance our technological capabilities, we are seeking a talented Senior System Test Engineer to join our R&D department based in Geneva. As part of our Test and Releasing team, you will play a critical role in bringing our advanced quantum technology systems from prototype to reliable product and contribute to the development of cutting-edge systems at the intersection of physics, engineering, and quantum technologies.Your primary mission will be system-level testing, validation, and debugging across hardware, software, and system interfaces. Working closely with cross-functional teams, you will implement testing activities to meet our product requirements and performances and ensure its efficient and reliable integration within our customer’s fast evolving environment. Your work will directly impact product quality, scalability, and readiness for deployment. This role combines hands-on engineering with system-level insight to bridge development and field performance.You are a system engineer that seeks new challenge.You have high sense of ownership and are committed on delivery.You have a strong interest in developing products for next generation quantum technologies that are changing the future of single photon measurement or communication networks.You might be interested in joining R&D team.Senior System Test EngineerKey Functions and Responsibilities:Manage and execute test & integration activities to secure the high quality and robustness of our productsDefine test plan, test cases and documentation, covering system functionalities and performance. Deliver Test reports.Develop scripts to execute automatically test procedures and integrate them in our automated test frameworkInstall, configure and deploy full systemsInvestigates and implements solutions to product, process or test problems.Assist R&D developers during integration and support customer integration activitiesContribute actively to our Agile framework to ensure and continuously improve its overall efficiencyDesired Skills & Experience:A degree in Computer Science, Systems Engineering, or a related discipline, with a minimum of 5 years of hands-on experience in Systems Integration and Test Engineering.Strong background in test engineering for complex, multidisciplinary systems—ideally in fields like network devices, security appliances, monitoring or computing systemsGood knowledge of network system administration and communication protocolsProven experience in installing, configuring, and troubleshooting Linux based environmentsGood understanding and handling of Web APIs and REST interfacesKnowledge of networking fundamentals (TCP/IP, DNS, DHCP, routing, switching, firewalls).Experience with standard security concepts (algorithms, cryptographic keys handling, encryption, authentication mechanisms)Proficiency with test automation frameworks and scripting (, Python, Bash, Selenium, or similar).Proficient communication and organization skills are required to interact with internal company contacts and customers.Experience with testing functional interfaces a plusExperience with external network monitoring systems ( Nagios) is a plusExcellent analytical, troubleshooting and problem-solving skillsGood understanding of Agile software development methodologies (SCRUM) and quality processes.Demonstrated ability to thrive in fast-paced, dynamic environments, managing change and complexity.Team-player, quick learner, proactive, and positive attitudeProficiency in English (C1 level) both written and verbal, French is a plus.jid9d05bb8aen jit0731aen