IT & Security Administrator

MARSS Group; Nice; On-site; EUR 40,000 - 60,000; Full time

Job summary

MARSS Group is seeking an IT & Security Administrator to maintain our core IT infrastructure and oversee security operations from our Nice office. You will support end users, respond to incidents, and help deploy new technologies while aligning with security best practices.

Your role includes monitoring system health, applying patches, and collaborating with cross-functional teams to safeguard digital assets and data.

Qualifications

• 2-3 years of experience in IT administration, system administration, or a dedicated IT security role.
• Strong understanding of networking concepts (TCP/IP, DNS, DHCP, VLANs, VPNs) and firewall management.
• Proficiency in administering Windows/Linux environments and cloud platforms (e.g., Microsoft 365, Azure, or GCP).
• Hands-on experience with EDR/antivirus tools, identity management (Active Directory/Okta), and backup solutions.

Responsibilities

• Monitor the health, performance, and security of all corporate IT infrastructure, including networks, servers, cloud environments, and endpoints.
• Manage and configure IT and security tools (firewalls, EDR, IAM, backups, and MDM solutions).
• Ensure systems are updated, patched, and hardened against threats; assist in audits and compliance.
• Participate in deployment of new IT and security products and infrastructure upgrades; automate tasks where possible.

Skills

Problem solving

Communication

Adaptability

Analytical thinking

Tools

EDR tools

Firewall management

Identity management (AD/Okta)

Backup solutions

Job description

Work Location: The role requires regular weekly attendance at our office in Nice, France.

Work Authorisation: Applicants must be legally authorised to work in France.

The Position

We are seeking a skilled and proactive IT & Security Administrator to join our growing team. In this role, you will be the backbone of our daily technology operations and the first line of defense for our digital assets. You will be responsible for maintaining our core IT infrastructure and security solutions, assisting in the deployment of new technologies, providing top-tier support to our end users, and swiftly managing IT and security incidents.

If you are a tech-savvy problem solver who thrives on keeping systems running smoothly and securely, we want to hear from you.

Main Responsibilities

System Maintenance & Security Operations

• Monitor and Maintain: Oversee the health, performance, and security of all corporate IT infrastructure, including networks, servers, cloud environments, and endpoints.
• Product Administration: Manage and configure IT and security tools (e.g., firewalls, anti-virus/EDR, identity and access management (IAM), backups, and MDM solutions).
• Patch & Vulnerability Management: Ensure all systems, software, and firmware are regularly updated, patched, and hardened against potential threats.
• Compliance & Audits: Assist in maintaining documentation, asset inventories, and compliance with internal security policies.
• Solution Deployment: Participate actively in the evaluation, planning, and rollout of new IT and security products and infrastructure upgrades.
• Process Improvement: Identify opportunities to automate routine tasks, optimize current workflows, and enhance overall system security.
• Collaboration: Work closely with cross-functional teams to ensure new business projects align with technical and security best practices.
• Alert Triage: Monitor security information and event management (SIEM) tools or logs for unusual activity and investigate potential threats.
• Troubleshooting: Act as a key responder for critical IT outages or security breaches, working efficiently to minimize downtime and contain risks.
• Root Cause Analysis: Document incidents thoroughly, perform post-mortem analyses, and implement preventative measures to stop recurring issues.

End-User Support & Enablement

• Technical Support: Provide troubleshooting support for hardware, software, and connectivity issues escalated by end users.
• Onboarding/Offboarding: Manage user accounts, provisioning, and de-provisioning of hardware and access rights for arriving and departing employees.
• Security Awareness: Educate staff on IT best practices and cybersecurity hygiene (e.g., recognizing phishing attempts).

Requirements

Technical Requirements:

• Experience: 2-3 years of experience in IT administration, system administration, or a dedicated IT security role.
• Networking: Strong understanding of networking concepts (TCP/IP, DNS, DHCP, VLANs, VPNs) and firewall management.
• OS & Cloud: Proficiency in administering Windows/Linux environments and cloud platforms (e.g., Microsoft 365, Azure, or GCP).
• Security Tools: Hands-on experience with EDR/antivirus tools, identity management (Active Directory/Okta), and backup solutions.

Soft Skills:

• Problem-Solving: Analytical mindset with the ability to diagnose complex technical issues under pressure.
• Communication: Strong verbal and written communication skills, with the ability to explain technical concepts to non-technical users.
• Adaptability: A keen willingness to learn new technologies and adapt to an ever-evolving threat landscape.