5G NTN Cybersecurity Expert

Eutelsat; Issy-les-Moulineaux; On-site; EUR 90,000 - 130,000; Full time

Job summary

Eutelsat is seeking a 5G/NTN Cybersecurity Expert to join the IRIS² programme at Issy-les-Moulineaux, France. You will design and implement secure systems to protect sensitive data for our LEO/NTN architecture, ensuring compliance with 3GPP, ISO, and NIST standards.

You will define security solutions from early study phases, collaborate with engineering teams, and contribute to risk assessments, certification, and ongoing security improvements.

Qualifications

• Bachelor's or Master’s degree in computer science, information security, or related field.
• Proven experience securing 4G/5G mobile networks.
• In-depth knowledge of cyber security risk management and standards (3GPP, ISO 27001, ISO 27005, NIST).
• Strong understanding of 5G core architecture, network slicing security, and key management.
• Proficiency in security technologies: network security, software security, cryptography, RF security.

Responsibilities

• Ensure the security and resilience of 5G and NTN services.
• Assess security requirements for hybrid terrestrial-satellite systems.
• Define and review security architectures across 5G core, NTN, satellite systems and service orchestration platforms.
• Support integration of 3GPP NTN capabilities into end-to-end security design.
• Contribute to security documentation and risk assessments.
• Collaborate with system engineering, security teams, and external partners to meet security requirements.
• Participate in security certification and accreditation activities.

Skills

cybersecurity

5G security

risk management

network security

cryptography

ISO 27001

NIST

travel

English

Education

Bachelor's or Master’s degree in CS/Info Security

Tools

Firewall

PKI

Job description

Be part of a new era in communications, transforming connectivity with Eutelsat – the world’s first GEO-LEO integrated global satellite operator.

As a global leader in satellite communications, we provide connectivity, broadcasting television channels and packages, transmitting news reports, and wholesale broadband Internet access services.

With Eutelsat Group You’ll Get To:

• Pioneer the future of Space Technology
• Bring connectivity to remote frontiers
• Collaborate with customer-centric experts
• Embrace cultural diversity in our global team

Where your skills ignite opportunities and you will elevate your skills in a stretching, rewarding, and meaningful environment. At Eutelsat, we’re united by inclusion and diversity, striving for gender balance and social responsibility, on Earth and in Space.

Job Overview

We are looking for a 5G/NTN Cybersecurity Expert for the IRIS² programme.

You will play a critical role in the activity of review, design and implementation of secure systems, infrastructure and applications to protect our organization’s and our customers’ sensitive information and assets. You will be responsible for developing and maintaining the 5G part of our LEO system and networks cyber security architecture, ensuring that it complies with our customers’ requirements, regulatory requirements, international security standards including 3GPP, ISO, NIST and industry best practices. You will be involved in the definition of security solutions since the early study phase for projects of key importance. Your expertise will contribute to the overall protection of our LEO systems against cyber threats and based on information security risk management and provide guidance to all our teams on security-related matters.

What You’ll Do

• Ensure the security and resilience of 5G and NTN services
• Assess security requirements for hybrid terrestrial-satellite communication systems
• Define and review security architectures spanning 5G core networks, Non-terrestrial networks (NTN), satellite communication systems and service orchestration platforms
• Support the integration of 3GPP NTN capabilities into the end-to-end security design
• Review and contribute to the definition of the security documentation, such as plans, requirements, design, validation and reports
• Collaborate with the System engineering teams to match the security requirements with the end-to-end system architecture
• Contribute to security certification and accreditation activities
• Contribute on the overall risk assessments and vulnerability assessments process to identify potential security weaknesses
• Ensure requirements compliance through verification, traceability and evidence management
• Analyze and investigate any security tradeoffs and requests for deviations.
• Collaborate with external partners, security systems integrators, vendors, and auditors to address security-related requirements
• Work closely with IT teams, software developers, network engineers, and other stakeholders to ensure security measures are implemented effectively
• Stay up to date with the latest cyber security trends, technologies, and threats

What You’ll Need

• Bachelor's or master’s degree (preferable) in computer science, Information Security, or a related field
• Proven experience securing 4G/5G mobile networks
• In-depth knowledge cyber security risk management, telecom security standards and frameworks (e.g., 3GPP, ISO 27001, ISO 27005, EBIOS, NIST Cybersecurity Framework, ECSS, CCSDS)
• Strong understanding of 5G core architecture, network slicing security, authentication and key management
• Proficiency in security technologies:
• Network security (Firewall, routing, filtering...);
• Software security;
• Cryptography (PKI, cryptographic protocols...);
• RF security;
• Excellent analytical and problem-solving skills.
• Strong communication and collaboration abilities.
• Fluent English; French and other European languages are a plus
• Willingness to travel regularly across the EU to attend meetings and workshops
• The Position is open to European Union nationals

Where You’ll Work

You will be based in Issy-les-Moulineaux (France), in a highly technical environment dedicated to IRIS² security and engineering, working closely with the engineering department, the security team and the subcontractors.

Home office may be considered after initial training and subject to operational constraints. Regular on-site presence and travel within the EU are expected.

Data Protection

The Eutelsat treats the protection of personal data submitted to it seriously. By submitting this application, you agree to the collection and retention of your personal data by the Eutelsat Group and acknowledge notice of and understand the terms of Eutelsat’s Privacy Policy (as amended from time to time).

This role is a Eutelsat job opening; all of our open roles are posted on the current and Eutelsat websites. Please note that when you are applying, your application may be seen by both teams.