N3 Infrastructure Engineer

Project overview

Our client, an e-commerce specialist, is looking for a Level 3 infrastructure engineer for a replacement. You will join its information systems department, in the Technical Infrastructures and Production division: about twenty people, with the group's CISO. Your team, 'Projects and Integration', handles the build, Level 3 run, and security of the group.

You will primarily work on Tier 0 and Tier 1: identity, Nutanix datacenter, storage, backups, deployment and automation, and, where applicable, on the rest of the information system.

Your missions

This position is for you if you have already secured an Active Directory, administered a Microsoft PKI, and worked on Nutanix in production.

It is not for you if your AD experience is limited to account and GPO management, or if spending three days a week on-site in Essonne is not feasible for you.

Profile sought

Essential

Appreciated

Soft skills

Work environment

Identity Active Directory, Entra ID, NPS, PKI

Windows Server 2016 to 2025, Linux RHEL and Rocky Linux systems

Nutanix Hyperconvergence

Security Fortigate, SentinelOne, Defender for Identity, Varonis, bastion, tiered model,

OVH Cloud, Microsoft Azure, Microsoft 365

Operations SCOM, Grafana, Prometheus, AlertManager, SCCM, Intune, SOTI, Jira Service

Automation Azure DevOps, GitOps, Ansible, Terraform, Power Platform, Copilot Studio, API

• Identity: administer, secure, and evolve Active Directory, Entra ID, NPS, and PKI.
• Datacenter: operate and evolve the Nutanix platform (Prism Central, Files, Objects, NDB, NKP), storage, and backups.
• N3 Run: handle complex incidents and alerts reported by the SOC, manage change requests, and support other IT department teams.
• Projects: participate in infrastructure projects and new business projects, from design to production.
• Automation: industrialize deployments with Ansible, Terraform, and Azure DevOps, using GitOps.
• Security: maintain and elevate the security level of the information system, using the tier model, bastion, and Defender for Identity.
• Minimum seven years of experience in systems and infrastructure engineering.
• Real experience in Active Directory security: tiered model, privileged accounts, audit with PingCastle or equivalent tool.
• Administration of a Microsoft PKI (ADCS): installation, migration, or renewal of certification authorities, management of certificate templates.
• Nutanix in production. VMware experience with a migration to Nutanix is welcome.
• Level 3 run: diagnosis of complex incidents, change requests, assistance to other teams.
• Entra ID and Entra Connect, NPS and RADIUS for Wi-Fi.
• HYCU or Veeam backup, Data Domain.
• NDB, NKP, or Objects.
• Advanced PowerShell, Ansible, Terraform, Azure DevOps.
• Fortigate, SentinelOne, Defender for Identity, Varonis.
• Linux RHEL or Rocky Linux.
• Interest in automation and AI: Power Platform, Copilot Studio.
• Autonomous and proactive, you switch from build to run within the same day.
• You communicate clearly with other IT department teams and enjoy teamwork.
• A genuine appetite for security, and the ability to learn quickly about new technologies.

Project details

• Start: ASAP
• Duration: 1 an renouvelable
• Remote: hybrid
• Location: Essonne, France, FR
• Languages: French