**Location:** Madrid, MD, ES **Professional Profile:** D&S Engineering, Mobility and ATM **Required Experience:** More than 2 years of experience **Work Modality:** Hybrid **️Would you like to uncover the secrets of cutting-edge technologies?** At Indra, a technology and defense leader, we are seeking a **Senior GNC Engineer for Critical Defense Systems**, eager to learn and grow within **Defense** projects. If you enjoy tackling **technological challenges** and wish to develop in a **pioneering environment**, this is the place for you! **What We Offer** * **Stability and Future ✨:** Long-term projects at a leading Defense company with **more than 50,000 professionals**, backed by financial security. * **Innovative and High-Impact Projects:** You will work with state-of-the-art technologies, delivering impact both nationally and internationally. * **Close and Transparent Environment:** You will benefit from direct and fluid communication with managers and colleagues, within a collaborative and open setting. * **Autonomy and Flexibility:** You will have the freedom to organize your work, with genuine work-life balance tailored to your pace. * **Personalized Career Plan:** Designed to foster your professional growth and development. * **Continuous Training:** via Open University and Udemy for Business (over 6,000 courses to specialize!). * **Exclusive Well-being Discounts:** Enjoy benefits at gyms, restaurants, shops, leisure activities and more as an Indra employee. * **Competitive Compensation** and **flexible compensation plans** adapted to your needs. **Key Responsibilities** **Lead GNC system architecture and development** across all phases. **Define and validate terminal guidance algorithms** for EO/IR, TV, RF, laser or hybrid seekers. **Oversee seeker integration** into the GNC chain (models, latencies, noise, stability). **Establish performance requirements and models** for terminal guidance across various scenarios (detection, tracking, clutter). **Develop advanced tracking filters** (Kalman, EKF, UKF, Particle Filters, IMM). ️ **Lead 6DoF and HW-in-the-loop simulations** for terminal maneuvers. * ️ **Review control parameters** (agility, saturation, autopilot) for critical maneuvers. ️ **Provide technical support during stress tests and validation flights**, investigating GNC failures. **Advise on interfaces with other subsystems** (communications, autopilot, payloads). ✅ **Ensure GNC system accuracy, robustness and redundancy**. **Essential Requirements** **Education and Experience:** +10 years developing GNC systems for aircraft, missiles, UAVs or guided systems. **Seeker Experience:** EO/IR, TV, RF (active/semi-active), SAL/laser. **Mastery of terminal guidance algorithms:** PN, APN, TPN, PNG, augmented PN, EKF/UKF estimators. **Tracking and multisensor fusion:** EKF/UKF, IMM, particle filters. ️ **Advanced Simulations:** 6DoF, Monte Carlo, seeker simulation. **Navigation Systems:** GNSS/IMU, sensor fusion, dynamic and kinematic models. **HW/SW Integration** in guidance or seeker systems. ️ **Autopilot Knowledge:** Pixhawk, ArduPilot, PX4 or proprietary systems. * ️ **Identification of GNC failure modes** and definition of mitigations. **Desirable** Experience in terminal guidance for loitering munitions, homing missiles or UAVs. Knowledge of advanced seekers: dual-band IR, multispectral EO, MIMO RF, LIDAR. Vision algorithms: detection/tracking (centroid, deep learning, optical flow). ️ HIL simulation with imaging or RF sensors. Programming in **C++, Simulink Embedded Coder, ROS** for advanced navigation. Robust and adaptive control: L1 adaptive, MPC. Technical publications or participation in defense projects. ✅ Experience in guidance system certification and aviation regulations. Ability to lead technical reviews and mentor multidisciplinary teams. **Remote Work:** **40%**, 2 days at home, 3 days in the office. **Our Process** * **Application Review** – We assess your experience and fit with our requirements. * **First Call (5–10 min)** – If you receive a call from an unknown number, it’s us. A relaxed conversation to get to know you and answer any questions. * **Technical Interview** – You’ll meet the team, who will detail the project and daily tasks, and ask about your technical knowledge and skills. Additionally, we’ll send brief psychological and English proficiency assessments (if required) to better understand your profile. * **Offer and Welcome** – If everything goes well, you join the team! **Estimated Timeline:** We aim for agility—around 1–2 weeks. **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 offer our professionals. **Are you ready to take the next step?** Join Indra and test your talent in an environment that challenges you every day. **Apply Now!** *We are committed to fostering workplaces where people are treated with respect and dignity, promoting professional development of our staff and guaranteeing equal opportunities in selection, training and promotion, offering a working 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.*