ABGi Technology is recruiting on behalf of its client, an organisation operating critical IT infrastructure, for its future Senior Systems Engineer N3, based in Lyon (Croix-Rousse).

🔎 YOUR MISSIONS

As part of the maintenance in operational conditions, securing and evolution of its IT infrastructure, our client wishes to strengthen its teams with an experienced Systems Engineer, with solid technical expertise at level 3.

You will work on complex systems and infrastructure environments, combining Windows and Linux servers, VMware vSphere virtualisation, SAN/NAS storage infrastructure, HPE servers and Trellix / McAfee security solutions.

Your role will be to ensure the advanced administration, availability, performance and security of the platforms, while handling complex incidents and technical issues requiring in-depth expertise.

You will also contribute to the evolution of the infrastructure, the continuous improvement of operational practices and the formalisation of technical procedures.

The missions requested of you:

Systems administration and operations - Level 3

• Ensure the advanced administration of Windows Server and Linux server environments;

• Guarantee the availability, stability and performance of system infrastructure;

• Provide level 3 (N3) expertise on complex and major incidents;

• Carry out in-depth analyses, identify root causes and implement appropriate fixes;

• Take charge of infrastructure issues beyond the scope of day-to-day operations teams;

• Ensure advanced diagnosis of malfunctions and take part in their resolution;

• Contribute to maintenance in operational conditions (MCO) and the continuous improvement of technical environments.

Virtualisation and storage

• Administer and optimise VMware vSphere virtualisation environments;

• Ensure the operation and maintenance of ESXi hypervisors, vCenter servers and virtualisation clusters;

• Manage high availability and resource distribution mechanisms (HA / DRS);

• Carry out migration operations, snapshot management and optimisation of virtual resources;

• Diagnose and resolve complex incidents affecting virtualised environments;

• Administer SAN/NAS storage infrastructure, notably NetApp and Dell PowerVault solutions;

• Monitor datastores, capacities, performance and storage availability;

• Take part in the evolution and optimisation of virtualisation and storage platforms;

• Work occasionally on other virtualisation technologies, notably Nutanix AHV.

Server infrastructure and hardware equipment

• Ensure the administration and technical expertise of HPE ProLiant servers;

• Use hardware administration and monitoring tools, notably HPE iLO;

• Carry out firmware updates, patching operations and maintenance interventions;

• Diagnose hardware malfunctions and contribute to their resolution;

• Ensure the availability, reliability and performance of physical infrastructure;

• Take part in maintenance and evolution operations for equipment hosted in the datacentre.

Infrastructure security and antivirus solutions

• Administer and maintain Trellix / McAfee ePO system protection solutions;

• Ensure the deployment, configuration and monitoring of antivirus solutions;

• Define, apply and maintain security policies associated with server environments;

• Monitor the operation of protection solutions and handle related incidents;

• Ensure configurations comply with current security policies;

• Take part in the continuous improvement of infrastructure security and resilience.

Documentation and continuous improvement

• Write and maintain the technical documentation of the environments administered;

• Produce operating procedures, installation guides and working methods;

• Formalise architecture files and technical configurations;

• Document complex incidents, interventions and the solutions implemented;

• Contribute to the standardisation and optimisation of administration practices;

• Enrich the technical knowledge base to facilitate future interventions;

• Take part in identifying and implementing continuous improvement actions.

🎯 OUR REQUIREMENTS

Required skills and experience:

• Significant professional experience in systems and infrastructure administration, with a genuine ability to intervene at N3 expertise level;

• Solid mastery of advanced administration and troubleshooting of Windows Server and Linux environments;

• In-depth expertise in VMware vSphere, notably ESXi, vCenter, clusters and HA/DRS;

• Concrete experience in the administration, operation and troubleshooting of virtualised infrastructure;

• Mastery of migration operations, snapshots, resource management and VMware troubleshooting;

• Good knowledge of SAN/NAS storage infrastructure;

• Experience with NetApp storage solutions, notably their administration and monitoring;

• Knowledge of Dell PowerVault storage environments;

• Significant experience with HPE ProLiant servers and associated tools, notably iLO;

• Mastery of maintenance operations, firmware updates and patch management;

• Experience in administering Trellix / McAfee ePO antivirus solutions;

• Ability to manage security policies and monitor their compliance;

• Experience in maintaining operational conditions of critical infrastructure;

• Ability to analyse and resolve complex technical incidents;

• Ability to write structured and usable technical documentation;

• Autonomy, rigour, methodology and analytical skills.

The following skills are genuine advantages:

• Knowledge of Nutanix AHV and its administration features;

• Experience with other virtualisation environments;

• In-depth knowledge of storage infrastructure and its performance issues;

• Experience of datacentre environments and high availability architectures;

• Practice of open source environments and distributed infrastructure;

• Experience in contexts requiring a high level of availability and service continuity;

• Ability to propose technical optimisations and contribute to the evolution of architectures;

• Experience in standardising operating procedures and continuously improving technical processes.

Experience in complex, critical IT environments or those subject to high demands for availability, performance and security is a real advantage.

👤 PROFILE SOUGHT

Holding a Bac+2 to Bac+5 qualification in computing, systems, networks or IT infrastructure, you can demonstrate significant experience in systems administration, ideally gained in complex technical environments requiring level 3 interventions.

You have recognised expertise in Windows Server, Linux and VMware vSphere environments, as well as solid skills in storage infrastructure, physical servers and system security.

You are able to work autonomously on complex technical issues, from incident analysis through to resolution, while ensuring the stability and security of the infrastructure.

Rigorous, methodical and with excellent analytical skills, you enjoy demanding environments requiring strong diagnostic capability and in-depth technical expertise.

Your ability to document your interventions, share your knowledge and propose technical improvements will be essential to succeed in this assignment.

Additional information:

• Location: Lyon - Croix-Rousse

• Start: As soon as possible (ASAP)

• Duration: Long-term assignment

• On-site: Position based on site, no remote working

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