# GNC Engineer > Sorontar · Paris, France · Full-time · Posted 2026-10-28 **Salary:** EUR 70,000–90,000 **Workplace:** on_site ## Description Sorontar is a team of engineers and scientists working to rearm France and its allies. Backed by world-class defense investors and angels, we are building a universal weapon architecture where software, design and manufacturing come together to produce more, faster and at lower cost. A product like this calls for a different kind of company. In most large organizations, layers of management stand between people and their work: ownership fades, knowledge travels slowly and energy goes into coordination. We chose the opposite. We keep Sorontar flat and give that energy back to the work, which is why we look for people who need no management once the direction is set. If a lean team driven by its mission is where you do your best work, you will feel at home here. ### What you'll get to do At Sorontar, you will join the GNC team and design the guidance, navigation and control of our weapon systems. You will build the simulations, develop the algorithms and work with the software team to run them on our embedded hardware. Your work will be tested regularly during our test campaigns, and you will use each test to improve your models and algorithms. ### Your profile You have already designed guidance, navigation or control algorithms for aerospace or defense systems. You are comfortable with flight simulation, sensor fusion and control design, and you can turn your work into code that runs on embedded hardware. You work in French and English. ### What will set you apart Experience with algorithms that have flown will set you apart, including as part of a team on large programs such as aircraft, missiles or UAVs. A strong understanding of the interfaces with software, systems and aerodynamics is essential for this role. Experience in defense is also a plus. We give priority to candidates with at least a first professional experience, and for candidates early in their career, we look closely at degrees and training. People who thrive at Sorontar also share four traits: - **You are an owner.** You treat problems as your own and carry them through to the result without waiting to be asked. - **The mission stays with you.** You keep thinking about the problem, because solving it matters to you. - **You are measured by what you deliver.** The result counts more to you than how busy you look. - **You decide with facts.** Evidence weighs more for you than opinions, including your own. ### What's critical to us We are looking for brilliant, fearless and good people, and we deeply believe that people do not fit into boxes. Yet while a person is a continuum of qualities, a hiring decision is a yes or a no. To make the best decision possible, we assess every candidate on six criteria, grouped in pairs in the matrices below. Make sure you see the graphs on our career page: [here.](https://apply.workable.com/sorontar) **Brilliant.** Talent without responsibility leaves potential unused, and responsibility without talent reaches its limits quickly. We look for people who combine the ability to solve hard problems with the drive to see them through. ![](https://workablehr.s3.amazonaws.com/uploads/photos/745573/6b4e9113cee98560a66fd42c1d4aa590.png)**Fearless.** Courage without judgment leads to reckless decisions, and judgment without courage turns into commentary. We look for people who see clearly and act on what they see. ![](https://workablehr.s3.amazonaws.com/uploads/photos/745573/d947f2bde8c4996834ae93f164960dd7.png)**Good.** Integrity without warmth makes a team hard to work in, and warmth without integrity is charm that does not last. We look for people others can rely on and enjoy working with. ![](https://workablehr.s3.amazonaws.com/uploads/photos/745573/3e1d2fbbec755255d7326af426916434.png) ### Our commitment to you The best companies are the ones where you work alongside the best colleagues. Our first commitment is to surround you with people you learn from every day, which is why we hire with great care. - **Highly competitive salary.** We offer €70,000 to €90,000 gross per year, positioned according to your experience. From there, your compensation follows a clear trajectory that rewards the scope and impact of your missions. - **Equity.** Your salary rewards your time, and your equity gives you a share of what your work creates. - **Full ownership of your scope.** You choose how to reach the results you are responsible for, and what counts is the outcome. - **Leverage.** We give you software, automation and the right tools so that your impact grows faster than your workload. - **Judgment over seniority.** Your influence grows with the quality of your decisions, not with your title or your age. - **The essentials.** Days off, full life insurance, lunch covered, and more. ### Important information - **Remote policy:** Our work relies on close collaboration and on our ability to adapt quickly, so we have a no-remote work policy. - **Contract:** We only offer full-time permanent contracts (CDI). - **Security and access:** Work at Sorontar falls into three categories. Research takes place in restricted-access zones (ZRR) and requires an access authorization. Applied technology builds on known and publicly available technologies and carries no specific access restriction. Programs deliver systems to defense customers and may require a national security clearance. - We review applications daily and contact selected candidates within two weeks. No reply after that means this role is not the right match today. New roles open often, and we look forward to seeing you apply again. ## Apply [Apply at Sorontar](https://apply.workable.com/sorontar/j/216FF0F4C5/apply) --- Powered by [Workable](https://www.workable.com)