Position: Thermal Systems Engineer - Aerospace Location: Luzern, Switzerland Contract: Permanent contract, full-time position Salary: It will be discussed during the recruiting process, taking into consideration seniority and responsibilities within the activity. AYES is a Switzerland-based Engineering and Technology company headquartered in Baden. Our core business operates across several industrial sectors, including Automotive, Aerospace, Railway, Energy, and Life Sciences. With a strong focus on innovation and engineering excellence, AYES supports clients across Switzerland, Europe, and the United States, delivering advanced R&D and technology solutions. At AYES, people are at the center of everything we do. We believe that knowledge sharing, collaboration, and talent development are key drivers of sustainable growth and technological progress. Key Responsibilities •\tPerform thermal performance evaluations for aerospace systems and components throughout the product development lifecycle •\tDevelop and maintain analytical and simulation-based thermal models using MATLAB, Simulink, or equivalent engineering tools •\tAssess temperature distributions, cooling requirements, and heat transfer mechanisms under various operating conditions •\tConduct environmental and cabin thermal analyses, including pressure and airflow considerations •\tSupport the definition and optimization of thermal management strategies and control concepts •\tContribute to system validation activities through testing, correlation, and model refinement •\tParticipate in safety and reliability assessments related to thermal and environmental control functions •\tEnsure compliance with applicable aerospace standards, certification requirements, and engineering best practices •\tCollaborate with multidisciplinary engineering teams, including systems, testing, certification, and design departments •\tPrepare and present technical analyses, reports, and recommendations to project stakeholders Our Ideal Candidate Should Have •\tUniversity degree in Aerospace Engineering, Mechanical Engineering, or a related technical field •\tMinimum 5 years of experience in thermal engineering within the aerospace sector •\tStrong background in thermodynamics, heat transfer, and thermal management principles •\tExperience developing engineering models and simulations using MATLAB/Simulink or similar software •\tKnowledge of aircraft environmental control systems (ECS) and thermal control architectures •\tFamiliarity with thermal testing, model validation, and engineering analysis methodologies •\tUnderstanding of aircraft development processes and certification activities; experience with CS-23 and/or FAR 23 is considered a strong advantage •\tBasic knowledge of aerodynamics and its impact on thermal system performance •\tStrong analytical and problem-solving skills •\tExcellent communication skills and ability to work effectively within multidisciplinary teams •\tFluent English (mandatory) If you are a detail-oriented communicator with a passion for technical precision, and you want to be part of a growing international engineering company with exciting opportunities in Europe and the USA, then…SAY YES AND GROW WITH AYES!