Job Summary: We are seeking a Front-End Software Engineer to develop software interfaces for advanced technological systems operating in critical Defense environments. Key Highlights: 1. Be part of an internationally recognized engineering company 2. Participate in technologically innovative projects at international level 3. Continue your professional development with a wide range of training opportunities At **Sener**, we are expanding our team and looking for a **Front-End Software Engineer** to join our workplace in **Madrid (Tres Cantos)** **or Santander.** You will become part of an internationally recognized engineering company where software is not merely an interface but a **key component of advanced technological systems** operating in critical environments: satellites, space missions, defense platforms, and unmanned systems. **Your responsibilities:** Within the Defense domain, you will be responsible for developing software interfaces for complex information systems as part of a young and dynamic team, carrying out the following tasks: * Development of MODERN desktop interfaces using WPF and C\#, following MVVM programming patterns * Development of user controls to display real-time signals **What we expect from you:** * Degree in Computer Engineering or Telecommunications Engineering * At least 5 years’ experience in the position offered. * High level of English. * Experience implementing MODERN desktop interfaces using WPF and C\# (following MVVM programming patterns) * Experience developing user controls to display real-time signals (spectrograms, waterfall plots, digital communication diagrams, etc.) * Experience working with gRPC in C\# for data stream acquisition * Experience consuming REST APIs from desktop graphical interfaces * Knowledge of Python * Enjoy working in a team and have a strong interest in learning Other desirable qualifications: * Interest in the RF domain * Experience programming concurrent software (preferably in C\#) * Familiarity with socket usage (TCP/UDP) * Experience programming interfaces to control external equipment, both for commanding purposes and for extracting any type of data stream. **What we offer you:** These are some of the benefits you will enjoy at Sener: * Join a multidisciplinary and highly qualified team participating in technologically innovative projects at international level. * Continue your professional development with us and access a wide range of training opportunities (technical training, soft skills, languages, etc.). * Take care of yourself with our physical and emotional wellbeing program: sports, workshops, medical services, physiotherapy, etc. * Optimize your salary with our flexible compensation plan (meal card, private health insurance, childcare vouchers, etc.) and benefit from our life and accident insurance. * Flexibilize your way of working! We offer flexible hours, remote work policy, coworking spaces, etc. * Discount portal for you and a specific onboarding program for our international employees. * We promote equal opportunities, diversity, and inclusion for all individuals and are certified as a Family-Responsible Entity (efr). Furthermore, through the Sener Foundation, we collaborate in activities that foster knowledge acquisition and contribute to socially responsible engineering development. If you identify with this profile, we look forward to welcoming you… At Sener, we aim to go as far as you want to go!