Administrateur Systèmes & Réseaux H/F

Alta Ares·Parismid

In short

→Administra y evoluciona infraestructura de TI en entornos Windows, macOS y Linux, con enfoque en seguridad.
→Gestiona redes empresariales (VLAN, VPN, 802.1X), acceso cero confianza y herramientas de ciberseguridad (EDR/XDR).
→Automatiza operaciones con PowerShell/Bash y colabora en escalabilidad y continuidad del negocio.

Experiencia en entornos técnicamente exigentes (preferible en inglés).

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The questions they'll ask you

1. Describe cómo implementarías un segmento de red con 802.1X y NAC en un entorno con múltiples plataformas.

🔒 +7 more questions

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💵 USD · Remote · No visa

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What they ask for

✓3 a 5 años experiencia en administración de sistemas y redes.
✓Conocimiento avanzado en Windows, Linux y macOS.
✓Experiencia con redes empresariales (VLAN, VPN, DNS/DHCP, firewalls).
✓Dominio de IAM (MFA, SSO, RBAC) y principios Zero Trust.
✓Habilidad en scripting (PowerShell, Bash, APIs) para automatización.
✓Formación en IT o experiencia práctica equivalente (Bac+2 a Bac+5).

Don't tick every box? That's normal — your free dossier shows your gaps and how to cover them in the interview.

GCPScalewayWindowsLinuxmacOSGoogle WorkspaceMicrosoft 365NinjaOneApple Business ManagerEDR/XDR

Who should you write to at Alta Ares?

Your free dossier identifies the people who'd interview you — their background, what they value, and how to reach out so you stand out before applying.

About Alta Ares Alta Ares is an air defense Neoprime. We build AI-guided interceptors to counter drones and cruise missiles, along with the software platform that powers them. Our customers are NATO-aligned militaries and defense institutions, and our systems are regularly deployed during live exercises and operational demonstrations across Europe, the Middle East, and Asia. Founded in 2024, we have grown to 90 people, raised over $60M, and increased revenue 40× this year. We are now entering a new phase of international expansion, industrial scaling, fundraising, and product development. Role & Mission Administer and evolve Alta Ares' IT infrastructure across Windows, macOS and Linux environments, including cloud services (GCP, Scaleway). Maintain and secure enterprise networks, including LAN/Wi-Fi, VLANs, VPNs, DNS/DHCP, firewalls, network segmentation and 802.1X/NAC. Manage identity and access systems, including RBAC, MFA, SSO, conditional access, and Zero Trust principles. Administer endpoint and mobile device management solutions, including MDM/MAM/RMM, NinjaOne and Apple Business Manager. Operate and improve cybersecurity tools, including EDR/XDR, vulnerability management, log monitoring and incident response. Ensure backup reliability, conduct restoration tests and contribute to business continuity and disaster recovery planning. Monitor infrastructure performance, troubleshoot complex incidents and coordinate external IT service providers. Automate recurring IT operations using PowerShell, Bash and APIs, while maintaining clear and up-to-date technical documentation. Collaborate with the IT Support Engineer and technical teams to strengthen IT operations, security and infrastructure scalability. Candidate Profile 3 to 5 years of experience in systems and network administration, ideally in a growing or technically demanding environment. Strong knowledge of Windows, Linux and macOS systems, TCP/IP networking, cloud infrastructure and enterprise network environments. Experience with IAM, endpoint management, cybersecurity tools and infrastructure monitoring. Familiarity with Google Workspace and/or Microsoft 365, EDR/XDR solutions and IT automation. Proficiency in scripting with PowerShell, Bash or APIs to automate operational tasks. Autonomous, rigorous and methodical, with strong troubleshooting skills and a security-first mindset. Ability to take ownership of infrastructure projects and contribute to the structuring and continuous improvement of IT operations. Degree in IT, systems and networks (Bac+2 to Bac+5) or equivalent practical experience.

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