Systems and Network Administrator
il y a 2 semaines
LIGENTEC is a young and dynamic European company located in Lausanne, Switzerland and Paris, France. We are manufacturing silicon nitride based Photonic Integrated Circuits (PICs) for customers in high-tech areas such as Quantum Technologies, LiDAR, Space Technologies and Biosensors. LIGENTEC All-Nitride technology enables our customers to develop their products in the industrial revolution 4.0.
To support our continued growth, we are looking for an
Systems and Network Administrator
You have the unique chance to fill this newly created position with content and be part of our growth story.
TasksNetwork Management
- Design, maintain, and optimize LAN, VLAN, WAN, iSCSI, and VPN configurations
- Configure and administer WiFi networks (UniFi), Cisco-managed switches, and routers
- Implement and maintain site-to-site and client-user VPN solutions
- Conduct network monitoring, performance tuning, and troubleshooting (L2/L3)
- Ensure network segmentation, traffic prioritization, and firewall policy management aligned with security standards
System Administration
- Administer and maintain hypervisors: Proxmox PVE and Backup Server, ensuring high availability and data integrity
- Manage and harden VMs (RHEL 9.4/9.5, Rocky 9.5, Debian 12, Windows Server 2025)
- Manage systems such as SAN storage, OPNSense, UniFi, VMWare Player
- Prepare and assign workstations (primarily Apple macOS) for new hires
- Support user onboarding/offboarding (tools, credentials, backups)
- Maintain system orchestration and perform regular updates
Tools & Software Ecosystem
- Administer solutions such as Google Workspace, Odoo, Asana, GitLab
- Evaluate, deploy, and maintain MDM solutions
- Work with various software/protocols: Bash, Docker, qemu, Ansible, Slurm, PostgreSQL, SELinux, Duplicity, GPG, SSH, LDAP, Zabbix, GLPI, Traefik, PGAdmin4
- Collaborate on the management of HPC environments and storage systems
User Support & Documentation
- Manage IT tickets and incidents through structured workflows, ensuring timely resolution
- Create and maintain user documentation and IT administration guides
- Contribute to the continuous update of the IT project tracking solution
- Evaluate new hardware/software technologies and drive their adoption where relevant
- Assist with deployment and maintenance of IT equipment
Required Skills & Experience
- 5+ years of professional experience in system and network administration within a Linux-heavy environment
- Proven expertise with virtualization (Proxmox or VMware), networking (L2/L3), and system hardening
- Good understanding of cybersecurity principles and system hardening
- Familiarity with backup/restore strategies, disaster recovery, and monitoring best practices
- Professional working proficiency in English (written and spoken) is required
- French is a plus but not mandatory
Soft Skills
- Strong organizational skills and ability to work autonomously
- Flexibility and willingness to learn in a fast-moving environment
- Excellent interpersonal and communication skills
- High standards of discretion and confidentiality
Education
- Bachelor's / Professional Bachelor's / Master's degree in IT, Network Engineering, or related field
- A flexible and dynamic start-up work environment.
- A highly international, diverse and highly motivated team.
- Personal responsibility in your job and the chance to grow with us.
- Our passion to bring PICs to every day's life.
Activity rate: 100%
Place of work: Corbeil Essonnes, France
Start date: as soon as possible
How to apply:
We look forward to receiving your full application, including 1) your CV, 2) a statement of interest (relating the position to your skills) and 3) grade or work certificates.
Non complete applications may not be considered.
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