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.

Senior Backend Java Engineer (Spring & Kafka) - Barcelona

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 are looking to strengthen our team with a Java Backend Engineer for Cyberdefense projects.

🚀 What will your day-to-day look like?

Develop robust, scalable, and high-performance backend services in cyberdefense environments.
Design, build, and evolve REST APIs ensuring their maintainability and security.
Work with Java 8+ and Spring in complex and productive environments.
Design, optimize, and maintain relational databases, primarily PostgreSQL.
Participate in the definition of technical architectures and key decision-making.
Apply advanced testing (TDD/BDD) to guarantee software quality.
Collaborate with multidisciplinary teams under agile methodologies (Scrum/Kanban/SAFe).
Implement integrations between systems using messaging (Kafka).
Provide technical mentoring to junior profiles and perform code reviews.
Drive continuous improvement by applying Clean Code principles and development best practices.

🎯 What are we looking for in you?

Minimum of 5 years of experience as a backend developer.
Proficiency in Java 8 or higher and frameworks such as Spring / Spring Boot.
Solid experience in the design and implementation of REST APIs.
Advanced knowledge of relational databases, especially PostgreSQL.
Proven experience in testing (TDD and BDD).
Experience in mentoring junior profiles.
Experience working in agile environments (Scrum, Kanban, or SAFe).
Experience with messaging systems such as Kafka.
Experience with Quarkus, Docker, and quality tools like SonarQube is valued.
Familiarity with Clean Code and SOLID principles.
Ability to work in a team, proactivity, and results orientation.

What we offer

Stability and Future 🏢✨: Long-term projects in a leading Defense company with over 60,000 professionals, providing financial security.
Innovative and High-Impact Projects 🚀: You will work with cutting-edge technologies, creating an impact at both national and international levels.
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 tailored to you 📈: Designed to boost your professional growth and development.
Continuous training 📚: via Open University and Udemy for Business (over 6,000 courses to specialize!).
Exclusive wellness discounts 🎁: Enjoy benefits at gyms, restaurants, shops, leisure, and more as an Indra employee.
Competitive remuneration 💰 and flexible compensation plans 💸📊 tailored to your needs.
💻 Remote work: 60%, 3 days at home, 2 days in the office.

📌 Our process

Application review 🔍 - We review your experience and see if you fit what we are looking for.
First chat (5-10 min) 📞 - If an unknown number calls you, it's us. This will be a relaxed conversation to get to know you and resolve doubts.
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 project team can analyze if there is a match.
Technical interview 🤝 - You will meet the team, who will explain the project and daily tasks in detail, and ask about your technical knowledge and skills. Additionally, we will send you brief psychological and English competency tests (if necessary) to better understand your profile.
Offer and welcome 🎉 - If everything goes well, you join our team and we begin this new stage together!

🕒 Estimated time: We want it to be agile, around 1-2 weeks.

Our commitment is to promote work environments where people are treated with respect and dignity, striving for 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 Backend Java para proyectos de Ciberdefensa.

🚀 ¿Qué harás en tu día a día?

Desarrollar servicios backend robustos, escalables y de alto rendimiento en entornos de ciberdefensa.
Diseñar, construir y evolucionar APIs REST asegurando su mantenibilidad y seguridad.
Trabajar con Java 8+ y Spring en entornos complejos y productivos.
Diseñar, optimizar y mantener bases de datos relacionales, principalmente PostgreSQL.
Participar en la definición de arquitecturas técnicas y toma de decisiones clave.
Aplicar testing avanzado (TDD/BDD) garantizando la calidad del software.
Colaborar con equipos multidisciplinares bajo metodologías ágiles (Scrum/Kanban/SAFe).
Implementar integraciones entre sistemas mediante mensajería (Kafka).
Realizar mentoring técnico a perfiles junior y revisión de código.
Impulsar la mejora continua aplicando principios de Clean Code y buenas prácticas de desarrollo.

🎯 ¿Qué buscamos en ti?

Experiencia mínima de 5 años como desarrollador/a backend.
Dominio de Java 8 o superior y frameworks como Spring / Spring Boot.
Experiencia sólida en diseño e implementación de APIs REST.
Conocimiento avanzado de bases de datos relacionales, especialmente PostgreSQL.
Experiencia demostrada en testing (TDD y BDD).
Experiencia en mentoring de perfiles junior.
Experiencia trabajando en entornos ágiles (Scrum, Kanban o SAFe).
Experiencia en sistemas de mensajería como Kafka.
Valorable experiencia con Quarkus, Docker y herramientas de calidad como SonarQube.
Familiaridad con principios de Clean Code y SOLID.
Capacidad de trabajo en equipo, proactividad y orientación a resultados.

Lo que te ofrecemos

Estabilidad y Futuro 🏢✨: Proyectos a largo plazo en una empresa líder de Defensa con más de 60.000 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.
💻 Teletrabajo: 60%, 3 días en casa, 2 días en oficina.

📌 Así es nuestro proceso

Revisión de postulaciones 🔍 - Vemos tu experiencia y si encajas con lo que buscamos.
Primera charla (5-10 min) 📞 - Si te llama un nº desconocido, somos nosotros. Será para conversar relajadamente, conocerte y resolver dudas.
Entrevista con el equipo de atracción de talento🤝: Queremos que nos conozcas mejor como empresa: valores, modelo de carrera, skilss.... para que tanto tú como el equipo del proyecto pueda analizar si hay match.
Entrevista técnica 🤝 - Conocerás al equipo, quienes te explicarán con detalle el proyecto y las tareas diarias, así como te preguntarán por tus conocimientos y habilidades técnicas. Además, te enviaremos unas breves pruebas de competencias psicológicas y de inglés (si es necesario) para conocer mejor tu perfil.
Oferta y bienvenida 🎉 - Si todo va bien, ¡te incorporas a nuestro equipo y comenzamos esta nueva etapa juntos!

🕒 Tiempo estimado: Queremos que sea ágil, alrededor de 1-2 semanas.