Senior Software Engineer C++/Java Linux - VoIP

Senior Software Engineer C++/Java Linux - VoIP

Indra
Indra
Madrid, SpainCompetitiveOn-siteAdded 13 days agoSenior · 8+ years

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About the role

As a leading company in the defense sector, we want to strengthen our team with a Software Engineer with experience in C++, Java and Linux, for a defense project.

What you'll do

💡What will you do?

  • Design, implementation and validation of VoIP communication applications in critical environments.
  • Development of new features in C++ and Java on Linux environments.
  • Participation in the definition of technical requirements and functional specifications for communications systems.
  • Integration of IP communications protocols and VoIP telephony, especially SIP.
  • Analysis, diagnosis, and resolution of issues related to voice communications and TCP/IP networks.
  • Development of graphical user interfaces (GUI) and system operation tools.
  • Software configuration management using version control tools (Git and Subversion).
  • Participation in technical reviews, integration testing, validation, and system acceptance.
  • Technical support during the deployment, integration, and maintenance phases of the systems.

What you'll get

What we offer you

  • Stability and Future 🏢✨: Long-term projects at a leading Defense company with more than 60,000 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 a real work-life balance adapted to your pace. Adapted to the working model of the position, in a factory environment with shifts, flexibility is not possible.
  • Career plan tailored to you 📈: Designed to boost your growth and professional development.
  • Continuous training 📚: at Open University and Udemy for Business (more than 6,000 courses to specialize!).
  • Bus service with different routes to work sites outside of the city of Madrid. (IMPORTANT: only mention this in on-site or hybrid job postings located in Arroyo, Torrejón, San Fernando, and Aranjuez).
  • Exclusive discounts for your well-being 🎁: Enjoy perks at gyms, restaurants, stores, leisure, and much more as an Indra employee.
  • Fixed salary 💰 + flexible compensation plans 💸📊 tailored to your needs.

About the company & team

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!

Hiring process

🕓What is our recruitment process like? It is important to note that almost no other company includes this section, and this is what sets us apart.

  • 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 answer any questions.
  • Technical interview 🤝: You will meet with the team, who will explain the project and daily tasks to you. We will also explore your technical knowledge. In addition, we will give you brief psychological and English competency tests (if necessary).
  • Interview with the talent acquisition 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.

What are we looking for in you?

Don't worry if you don't meet 100% of what we're looking for. Go for it, learn about our proposal, and tell us what you can bring! 🚀

  • Computer Engineering, Telecommunications Engineering, or related degrees.
  • Demonstrable minimum experience of 8 years in software development with C++.
  • Experience in development with Java on Linux environments.
  • Experience with Linux systems and scripting tools (Shell Script).
  • Experience in the development, integration and maintenance of communications software applications.

Additional information

As a company, we understand equality as a cross-cutting principle and a driver of social change. From this conviction, we reaffirm our commitment to equal treatment and opportunities between women and men, non-discrimination, pay equality, and the work-life balance of professional and personal life.

This commitment is reflected in the promotion of respectful and inclusive work environments in which all people are treated with dignity, can develop professionally, and have equal opportunities in selection, training, and promotion processes, offering a work environment free from any discrimination based on sex, 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 we offer our professionals.

You'll most likely need Spanish to apply.This job was automatically translated to English, .

Apply at Indra