Senior Backend Python Engineer to design and lead scalable services in critical environments. The role offers a hybrid model with 60% remote work and professional growth opportunities.
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Job details
Hybrid
Office and home days — the ad has the split.
Requirements
Have the right to work in Spain
Indra doesn't mention sponsorship in the ad.
Be near Alcobendas for hybrid days
No relocation package mentioned.
Have 5+ years of experience
Senior-level role.
This job was automatically translated to English.
Pay & benefits
What you'll get
- Stability and future 🏢✨: Long-term projects in a leading company in the defense sector.
- Cutting-edge technology 🚀: Tactical communications and next-generation critical systems.
- Collaborative environment 🤝: Work with highly specialized teams.
- Flexibility ⏳: Hybrid model with 40% annual remote work.
- Technical career path 📈: Professional development tailored to your experience.
- Continuous training 📚: Open University and Udemy for Business (+6,000 courses).
- Benefits and discounts 🎁: Leisure, wellness, and flexible compensation.
- Competitive compensation 💰 commensurate with profile and responsibilities.
Requirements
What we're looking for
You do not need to meet 100% of the requirements. We want to meet you and learn what you can bring 🚀
✅ Demonstrable experience of 5-10 years in tactical or mission-critical communications systems.
✅ Solid knowledge of radio communications, network protocols, and embedded systems architecture.
✅ Experience in developing network protocols and distributed architectures (MANET, routing, QoS).
✅ Experience in software integration on embedded platforms or distributed systems.
✅ Knowledge of channel modeling and radio links at a conceptual level.
✅ Experience with complex software lifecycles (DO-178, ISO/IEC 12207, or other equivalent frameworks).
- C / C++ (advanced level).
- Network management (advanced).
- Python for support, automation, and analysis (advanced).
- Defense and Security Communications Systems (advanced).
✅ Analytical skills, results-oriented mindset, and teamwork.
✅ Availability to work in Alcobendas, under a hybrid model (40% annual remote work).
The role
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 team in strategic tactical communications projects!
In our position as a leading company in the defense sector, we are looking to hire a Senior RF & Tactical Networks Engineer to participate in the SIAGEN CTN project, contributing to the design, development, and integration of advanced communications systems embedded in demanding operational environments.
You will join the SIAGEN CTN Project, a strategic initiative in the defense sector focused on developing advanced tactical communications capabilities, mobile networks, and embedded radio links, key to ensuring interoperability and effectiveness in real operational environments.
You will work on a project with high technical demands, with direct impact on critical operational capabilities.
What you'll do
- Design, develop, and integrate embedded tactical radio links for mission-critical systems.
- Implement and evolve the tactical waveform layer, ensuring interoperability, robustness, and performance.
- Develop network protocols and architectures: routing, controlled flooding, MANET, and QoS mechanisms.
- Participate in software integration on embedded platforms and distributed systems.
- Collaborate on conceptual modeling of channels and radio links (unclassified).
- Validate and verify solutions developed within complex software lifecycles.
- Work in a coordinated manner with other engineering teams to ensure overall system coherence.
- Prepare technical documentation and participate in project technical reviews.
Hiring process
Revisión de tu perfil
Primera toma de contacto
With an equipo de selección · Phone call · 5–10 min
Breve llamada para conocerte y resolver dudas.
Entrevista técnica
With an el equipo
Reunión con el equipo, que explica el proyecto y las tareas diarias y explora tus conocimientos técnicos; puede incluir breves pruebas de competencias e inglés.
Oferta y bienvenida
- La entrevista técnica puede incluir breves pruebas de competencias psicológicas e inglés si es necesario.
- La primera llamada puede llegar desde un número desconocido.
Hiring process
- Profile review 🔍
- First contact (5‑10 min) 📞
- Interview with Talent Acquisition 🤝
- Technical interview 🤝
- Offer and welcome 🎉
⏱️ Estimated duration: 2 weeks.
About Indra
Indra is a global technology and consulting company headquartered in Madrid, Spain, and a leader in IT and defense systems. It provides advanced solutions in air traffic management, defense electronics, cybersecurity, and digital transformation for clients worldwide. With a workforce of over 50,000 employees, Indra operates in more than 140 countries, making it one of Europe's largest defense and technology firms.
In Spain, Indra has a strong presence with major offices in Madrid, Alcobendas, and other cities, and it is a key player in the national defense and aerospace sectors. The company offers a wide range of roles for international professionals, from engineering and cybersecurity to project management and software development. Indra's work culture emphasizes innovation and technical excellence, and it actively recruits international talent, providing opportunities to work on cutting-edge projects in defense, space, and digital transformation.
- Industry
- IT and Defense
- Founded
- 1993
- Employees
- 50,000+
- Headquarters
- Madrid, Spain
- In Spain
- Madrid, Barcelona, Alcobendas
- Website
- indracompany.com
Good to know if you are moving
- Indra is a major defense contractor, offering opportunities to work on advanced defense systems like SCAPA and NGWS.
- The company has a strong focus on innovation, with significant investment in R&D and technology development.
- Indra provides hybrid and remote work options for many roles, offering flexibility for international hires.
- With offices in Madrid and Barcelona, Indra offers a chance to live in Spain's two largest cities.
- Indra is a global leader in air traffic management, with its systems used in over 100 countries.
In their own words
Additional information
Our commitment is to promote work environments where people are treated with respect and dignity, fostering the professional development of staff and ensuring equal opportunities in their selection, training, and promotion, offering a work environment free of 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 2025 certified company! Join a company certified as one of the best employers in Spain, thanks to our comprehensive HR management and the conditions we offer our professionals.
Location
Indra · Alcobendas
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