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Atos

Global IT services, consulting, digital transformation

Administrateur système - Réseaux & sécurité N2/N3 confirmé, h/f

Cloud EngineeringUpdated on Nov 14
Full-timeNantes, France€40k - €50k

About the Job

Requirements

  • A Bac+5 qualification in informatique and at least five years of experience in a similar position.
  • Expertise in operations and production, SRE, DevSecOps, Agile methods (Scrum/Kanban), and interest in AI.
  • Experience with Linux Debian 13, HAProxy, Apache, Tomcat, Liferay, and PostgreSQL.
  • Knowledge of OpenSSL, HTTPS, certificates, IAM, KVM, auditd, ClamAV, filtering, log sinks, backups, replication, and anonymization.
  • Experience with Terraform, OpenStack, Ansible, Git/GitLab, Bash, and Python.
  • Knowledge of FIP, network interfaces, LVM, CPU/RAM, cloud-init, APT, NTP, DNS, and block/object storage.
  • Experience with Checkmk, Cloudflare, Dynatrace, and ERK.
  • Knowledge of OpenShift, identified as a technical target.
  • Rigor, autonomy, proactivity, analytical and synthesis skills, writing ability, communication, teamwork, and ability to make proposals.

Responsibilities

  • Deliver an IaaS offering on Sovereign Cloud.
  • Perform interventions in a 24/7 production environment, including production releases, disaster recovery plans, cyberattack response, migration, and security patch deployment.
  • Carry out technical projects, manage production incidents, analyze performance testing, CVEs, and impacts, and conduct proofs of concept.
  • Configure, tune, and harden systems and products; manage the asset inventory, CMDB, and patch management; allocate and optimize cloud resources, including FinOps and Green IT.
  • Manage network routing and segmentation and analyze and secure network flows.
  • Conduct audits and monitor performance and observability; define technical and business KPIs; build dashboards and technical maps.
  • Address compliance and cybersecurity, including SSI accreditation, PSSI, ANSSI/RGS requirements, GDPR governance (AIPD and CNIL), the AI Act, the Cyber Resilience Act, SecNumCloud and the Cloud au centre doctrine, and technology standardization and alignment with current best practices.
  • Support SLA and performance objectives for resilience, scalability, high availability, load capacity, and response time.

About the Company

Atos

Global IT services, consulting, digital transformation

Atos is a global IT services and consulting firm that helps big companies and governments run and improve their digital systems. It offers services like cloud computing, cybersecurity, big data, and digital transformation, delivering these through consulting, system integration, outsourcing, and managed services to keep complex IT environments functioning smoothly. What sets Atos apart is its long history of growth by acquiring other firms, building a wide footprint across Europe and North America, and combining diverse capabilities into one large service provider. After a period of financial restructuring to reduce debt, Atos is focused on stabilizing its finances and returning to growth and more acquisitions by 2026.

Company size
10,001+
Company stage
IPO
Headquarters
Bezons, France
Founded
1997

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