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Salary
≈ $45k – $87k per year (Estimated)
Location
In office (Madrid)
Seniority
Senior · 5+ years exp

Confirmed on the employer's own hiring board on Oct 25, 2026. First seen by Alion on Oct 20, 2026.

Overview
Company
Impact
Profile match
Indra Group, the brand of Indra Sistemas, is a Spanish technology and defense company headquartered in Alcobendas near Madrid, working in defense systems, air traffic management, space, transport and mobility technology, and IT services through Minsait. Listed on the Madrid stock exchange and part of the IBEX 35, it reported 5,457 million euros in 2025 sales, more than 62,000 professionals and commercial presence in over 140 countries. The jobs on this record come from its UK and Ireland business, which hires software and systems engineers, test leads, security architects, service managers and business development staff.

At Indra Group, we develop space technology for the missions of the future.

We drive satellite, Earth observation, communications, and space defense programs, participating in projects that push the boundaries of technological innovation and knowledge.

Join our team working on national and international projects!

We are looking for a Space Situational Awareness (SSA) Simulation Engineer with experience in SSA algorithm development, orbital mechanics, sensor simulation, cataloguing systems, stochastic modelling, and end-to-end simulation environments to join projects focused on space surveillance and tracking systems, performance analysis, sensor modelling, simulation platforms, and advanced SSA solutions for the space sector.

What will you do?

  • Develop and maintain SSA algorithms for sensor simulation, object cataloguing, and KPI analysis.
  • Design, execute, and improve end-to-end simulation workflows for space surveillance and tracking applications.
  • Perform orbital mechanics analyses, numerical modelling, and stochastic performance assessments.
  • Support system validation, verification, and performance analysis activities through simulation environments.
  • Develop software solutions and simulation capabilities using modern programming languages and engineering tools.
  • Contribute to the implementation of advanced technologies such as Artificial Intelligence, digital twins, and high-availability systems.
  • Collaborate with multidisciplinary teams to define, analyse, and improve simulation architectures and operational concepts.

What are we looking for?

Don't worry if you don't meet 100% of the requirements. We encourage you to apply, learn more about our opportunity, and show us what you can bring to the team.

  • Master's degree in Aerospace Engineering or an equivalent scientific or engineering discipline.
  • At least 5 years of experience developing SSA algorithms, including sensor simulation, cataloguing, and KPI analysis.
  • Deep knowledge of orbital mechanics and hands-on experience with end-to-end simulation workflows.
  • Experience with numerical methods, stochastic modelling, and performance analysis.
  • Experience with CCSDS standards and event-driven or time-step simulation environments.
  • Experience with sensor modelling, including noise characterization, detection thresholds, field of view (FOV), and observation uncertainties.

What do we offer?

  • Innovative, high-impact projects: Work with cutting-edge technologies on projects with both national and international impact.
  • A career plan tailored to you: Designed to support your professional growth and development.
  • Autonomy and flexibility: Freedom to organize your work, with a healthy work-life balance adapted to your needs.
  • Stability and long-term opportunities: Join a leading company with more than 60,000 professionals and strong financial stability.
  • Annual vacation days plus additional personal leave days.
  • Open and transparent work environment: Enjoy direct communication with managers and colleagues in a collaborative setting.
  • Continuous learning: Access training through Open University and Udemy for Business (more than 6,000 courses available).
  • Employee discounts and benefits: Enjoy special offers on gyms, restaurants, retail stores, leisure activities, and much more.

What does our recruitment process look like?

  • Profile review: We assess your experience and skills to determine your fit for the role.
  • Initial phone conversation (5-10 minutes): If you receive a call from an unknown number, it may be us! A brief conversation to get to know you and answer any questions.
  • Talent Acquisition interview: An opportunity for you to get to know us better-our values, career model, skills framework, and culture-while we explore whether there's a mutual fit.
  • Technical interview: Meet the team, learn more about the project and day-to-day responsibilities, and discuss your technical expertise. Short assessments in English and competencies may also be conducted if required.
  • Offer and onboarding: If everything goes well, you'll join our team and begin this exciting new chapter with us!

Estimated hiring process duration: 2-3 weeks.

As a company, we view equality as a cross-cutting principle and a driver of social change. We are committed to equal treatment and opportunities for all, non-discrimination, pay equity, and work-life balance.

This commitment is reflected in fostering respectful and inclusive workplaces where everyone is treated with dignity, can grow professionally, and has equal opportunities in recruitment, training, and career progression, free from 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!

Join one of Spain's best employers, recognized for the outstanding conditions offered to its professionals and its comprehensive people management practices.

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