Location: Madrid, MD, ES Professional Profile: Defense and Security Required Experience: More than 2 years of experience Work Mode: Hybrid At **Indra**, we are seeking a **Communications Systems Engineer (HW and/or SW)** to participate in strategic projects ensuring secure connectivity in land, naval, and airborne environments. **Join our team on strategic Defense and Communications projects!** At Indra, a leader in technological solutions for defense and security, we are looking for a Telecommunications Engineer to join our Critical Communications team, participating in strategic projects ensuring secure connectivity in land, naval, and airborne environments. Did you know that Indra leads critical communications for defense and security? In our Communications area, we design and develop advanced solutions guaranteeing secure and reliable connectivity in land, naval, and airborne environments. We work with cutting-edge technologies in tactical systems, satellite links, and interoperable networks for strategic missions. **What will you do?** * Define requirements and design communication systems. * Apply systems engineering methodologies (MIL-STD-498, IEEE/ISO/IEC 15288) and MBSE using SysML/NAF tools. * Manage requirements with DOORS and work under SAFe/Agile methodologies. * Design solutions in digital signal processing, modulation, and coding. * Program and simulate using MATLAB/Simulink, VHDL, and tools such as Xilinx/Vivado. * Integrate SDR devices, MPSoCs, RFSoCs, and U/VHF/SATCOM systems. * Develop software in C/C++, drivers, APIs, and embedded systems under Linux/RTOS. * Implement advanced protocols (OSPF, BGP, TDMA, OFDMA) and SDN technologies. **What are we looking for in you?** Don’t worry if you don’t meet 100% of the criteria we’re seeking. Go ahead—explore our opportunity and let us learn what you can bring to our team! ✅ Telecommunications Engineering degree (Master’s in Communications Systems preferred). ✅ Experience in design and validation of communication systems. ✅ Advanced knowledge of C/C++, MATLAB, VHDL, and embedded environments. ✅ High-level English for international projects. ✅ Valuable experience in network protocols, SDR, and digital communications. **What we offer you** Stability and Future * ✨: Long-term projects at a leading Defense company with over 50,000 professionals. Innovative Projects * : Cutting-edge technologies with national and international impact. Close-knit Environment * : Direct communication and collaborative teamwork. Flexibility and Work-Life Balance * : Hybrid model adapted to your pace. Career Development Plan * : Professional growth and continuous training (Open University, Udemy for Business). Exclusive Benefits * : Discounts on leisure, sports, and wellness. Competitive Compensation and Flexible Benefits Packages * tailored to your needs. **What does our selection process look like?** Profile Review * : We assess your experience and skills to determine your fit with our requirements. Initial Contact (5–10 minutes) * : If you receive a call from an unknown number, it’s our team! A brief conversation to get to know you and answer any questions. Technical Interview : You’ll meet the team, who will explain the project and daily tasks. We’ll also explore your technical knowledge. Additionally, short psychological and English assessments may be conducted (if required). Offer and Onboarding * : If everything goes well, you’ll join our team and begin this new chapter together! **Estimated Duration: 1–2 weeks.** *Our commitment is to foster workplaces where people are treated with respect and dignity, promoting professional development of our staff and ensuring equal opportunities in recruitment, training, and promotion—providing a work environment free from discrimination based on gender, age, disability, sexual orientation, gender identity or expression, religion, ethnicity, marital status, or any other personal or social circumstance.* Indra is a Top Employer 2025! Join a company certified as one of Spain’s best employers, thanks to our comprehensive HR management and the conditions we provide to our professionals.