Indra is a leading global technology and consulting company and a major player in the defense and transportation sectors. As one of the largest Spanish multinationals, it operates through two main brands: Indra, focusing on Defense and Transport, and Minsait, which handles Information Technology and Digital Transformation. The company is a key partner in major international projects, including the development of the Eurofighter and the FCAS (Future Combat Air System).

Headquartered in Madrid, Indra maintains a massive footprint across Spain with specialized centers in cities like Barcelona, Seville, and Gijón. For international professionals, Indra offers a stable environment within a high-tech ecosystem, frequently hiring for roles in AI, cybersecurity, and aerospace engineering. The company provides various flexible work arrangements, including remote-first positions for specific technical roles and a strong focus on professional development.

Formed in 1993 from the merger of several Spanish technology companies, Indra has grown into a global leader in defense and IT. It is currently a constituent of the IBEX 35 index and has expanded significantly through international acquisitions.

For international professionals

Major employer for STEM profiles, particularly in aerospace, defense, and digital transformation.
Offers flexible work models, including hybrid and 100% remote options for many IT and software engineering roles.
Key participant in large-scale European defense and infrastructure projects, offering exposure to cutting-edge technology.
Provides opportunities for internal mobility across its global operations in over 140 countries.
Regularly hires for highly specialized engineering roles such as Radar Systems, RF Design, and AI Engineering.

Communications Systems Engineer (Radio / SDR)

Indra

This job was originally posted in Spanish and automatically translated to English. You'll most likely need Spanish to apply.

Job Description

At Indra Group, we protect what matters most.

We lead the development of cutting-edge technological solutions that strengthen national and international security.

💻 Join our European projects team!

As a leading company in the defense sector, we want to strengthen our team with a Communications Systems Engineer (Radio / SDR) for strategic projects in the Space domain.

💡 What will you do?

Define and develop the architecture of radio communication systems based on SDR.
Prepare and manage system and subsystem requirements (SRS, SSDD, etc.).
Participate in the design and definition of waveforms and data links at the system level.
Define the architecture of communications equipment (radios, modems, etc.).
Apply systems engineering methodologies (MBSE) for modeling and traceability.
Ensure consistency between requirements, design, implementation, and validation.
Analyze communications protocols and algorithms across the OSI stack.
Collaborate with development teams (DSP, FPGA, software) on system implementation.
Work with open standards and architectures such as SCA, SOSA, and MOSA.
Evaluate technical solutions and technologies in the field of tactical communications.

🎯 What are we looking for in you?

Don't worry if you don't meet 100% of what we are looking for. Go ahead, explore our proposal and tell us what you can bring to the team! 🚀:

✅ Degree in Telecommunications Engineering or similar.

✅ Senior experience (ideally 10+ years) in communications systems engineering.

✅ Deep knowledge of radio communications, SDR, waveforms, and datalinks.

✅ Experience in system architecture definition (radios, modems, etc.).

✅ Experience with MBSE tools such as DOORS, Enterprise Architect, Windchill or others.

✅ High level of English.

What we offer you

Stability and Future 🏢✨: Long-term projects in a leading Defense company with more than 50,000 professionals, with financial security.
Innovative and High-Impact Projects 🚀: You will work with cutting-edge technologies, with an impact both nationally and internationally.
Close and Transparent Environment 🤝: You will enjoy direct and fluid communication with managers and colleagues, in a collaborative and open environment.
Autonomy and Flexibility ⏳: You will have the freedom to organize your work, with real work-life balance adapted to your pace.
Career plan adapted to you 📈: Designed to boost your professional growth and development.
Continuous training 📚: at Open University and Udemy for Business (more than 6,000 courses to specialize in!).
Exclusive discounts for your well-being 🎁: Enjoy benefits at gyms, restaurants, shops, leisure and much more as an Indra employee.
Competitive remuneration 💰 and flexible compensation plans 💸📊 tailored to your needs.

🕓 What is our selection process like?

Profile review 🔍: We evaluate your experience and skills to determine if you fit what we are looking for.
First contact (5-10 min) 📞: If you receive a call from an unknown number, it's our team! It will be a quick conversation to get to know you and resolve any questions.
Technical interview 🤝: You will meet with the team, who will explain the project and daily tasks. We will also explore your technical knowledge. Additionally, we will conduct brief psychological competency and English tests (if necessary).
Interview with the talent attraction team🤝: We want you to get to know us better as a company: values, career model, skills... so that both you and the team can analyze if there is a match.
Offer and welcome 🎉: If everything goes well, you join our team and we begin this new stage together!

Estimated process time: 2 weeks.

Our commitment is to promote work environments where people are treated with respect and dignity, fostering the professional development of the workforce and guaranteeing equal opportunities in selection, training, and promotion, offering a work environment free from any 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 2026 company! Join a company certified as one of the best employers in Spain, thanks to our comprehensive HR management and the conditions provided to our professionals.

View original advert (Spanish)

En Indra Group, protegemos lo que más importa.

Lideramos el desarrollo de soluciones tecnológicas punteras que refuerzan la seguridad nacional e internacional.

💻 ¡Únete a nuestro equipo de proyectos europeos!

En nuestro posicionamiento como compañía líder en el ámbito de defensa, queremos reforzar nuestro equipo con un/a Ingeniero/a de Sistemas de Comunicaciones (Radio / SDR) para proyectos estratégicos del ámbito de Espacio.

💡 ¿Qué harás?

Definir y desarrollar la arquitectura de sistemas de comunicaciones radio basados en SDR.
Elaborar y gestionar requisitos de sistema y subsistema (SRS, SSDD, etc.).
Participar en el diseño y definición de formas de onda y data links a nivel de sistema.
Definir la arquitectura de equipos de comunicaciones (radios, módems, etc.).
Aplicar metodologías de ingeniería de sistemas (MBSE) para modelado y trazabilidad.
Asegurar la coherencia entre requisitos, diseño, implementación y validación.
Analizar protocolos y algoritmos de comunicaciones a lo largo de la pila OSI.
Colaborar con equipos de desarrollo (DSP, FPGA, software) en la implementación del sistema.
Trabajar con estándares y arquitecturas abiertas como SCA, SOSA y MOSA.
Evaluar soluciones técnicas y tecnologías en el ámbito de comunicaciones tácticas.

🎯 ¿Qué buscamos en ti?

No te preocupes si no cumples el 100% de lo que buscamos. ¡Anímate, conoce nuestra propuesta y cuéntanos lo que nos puedes aportar! 🚀:

✅ Titulación en Ingeniería de Telecomunicaciones o similar.

✅ Experiencia senior (idealmente 10+ años) en ingeniería de sistemas de comunicaciones.

✅ Conocimiento profundo de comunicaciones radio, SDR, formas de onda y datalinks.

✅ Experiencia en definición de arquitectura de sistemas (radios, módems, etc.).

✅ Experiencia con herramientas MBSE como DOORS, Enterprise Architect, Windchill u otras.

✅ Nivel de inglés alto.

Lo que te ofrecemos

Estabilidad y Futuro 🏢✨: Proyectos a largo plazo en una empresa líder de Defensa con más de 50.000 profesionales, con seguridad financiera.
Proyectos Innovadores y de Alto Alcance 🚀: Trabajarás con tecnologías de vanguardia, con un impacto tanto a nivel nacional como internacional.
Ambiente Cercano y Transparente 🤝: Disfrutarás de una comunicación directa y fluida con responsables y compañeros, en un entorno colaborativo y abierto.
Autonomía y Flexibilidad ⏳: Tendrás libertad para organizar tu trabajo, con una conciliación real y adaptada a tu ritmo.
Plan de carrera adaptado a ti 📈: Diseñado para impulsar tu crecimiento y desarrollo profesional.
Formación continua 📚: en Open University y Udemy for Business (¡más de 6.000 cursos para especializarte!).
Descuentos exclusivos para tu bienestar 🎁: Disfruta de ventajas en gimnasios, restaurantes, tiendas, ocio y mucho más al ser empleado de Indra.
Retribución competitiva 💰 y planes de compensación flexibles 💸📊a tus necesidades.

🕓 ¿Cómo es nuestro proceso de selección?

Revisión de tu perfil 🔍: Evaluamos tu experiencia y habilidades para determinar si encajas con lo que buscamos.
Primera toma de contacto (5-10 min) 📞: Si recibes una llamada de un número desconocido, ¡es nuestro equipo! Será una conversación rápida para conocerte y resolver cualquier duda.
Entrevista técnica 🤝: Te reunirás con el equipo, quienes te explicarán el proyecto y las tareas diarias. También exploraremos tus conocimientos técnicos. Además, te realizaremos breves pruebas de competencias psicológicas e inglés (si es necesario).
Entrevista con el equipo de atracción de talento🤝: Queremos que nos conozcas mejor como empresa: valores, modelo de carrera, skilss.... para que tanto tu como el equipo de pueda analizar si hay match.
Oferta y bienvenida 🎉: Si todo va bien, ¡te incorporas a nuestro equipo y comenzamos esta nueva etapa juntos!

Tiempo Estimado de proceso: 2 semanas.