IT Supervisor Network & Security

LesJeudis; Paris; Sur place; EUR 39 000 - 45 000; Plein temps

Avantages offerts par ce poste

Meal allowance

Public transport coverage

13th month bonus

Team-building activities

International environment

Résumé du poste

LesJeudis in Paris is seeking an IT Supervisor Network & Security to lead the availability, performance and security of our network infrastructures. You will drive security initiatives, implement policies, and coordinate with IT leadership to ensure a high level of service across the corporate office.

Having 4 to 5 years of higher education and fluency in English, you will oversee LAN/WAN, VPN, Wi‑Fi and related security tools while collaborating with external partners and internal teams to

Qualifications

• 4 to 5 years of higher education.
• Fluency in English.
• Experience in operating and securing enterprise networks in a multi-site environment.
• Strong knowledge of network architecture, routing, Wi‑Fi, VPN and segmentation.

Responsabilités

• Oversee operation, administration, and evolution of network infrastructures and security components.
• Deploy, maintain and optimize security solutions such as firewalls, EDR, and monitoring tools.
• Implement security policies and standards defined by IT leadership.
• Conduct technical risk assessments, identify vulnerabilities, and lead remediation plans.
• Contribute to security incident management and post-incident lessons learned.
• Ensure compliance with internal, regulatory, and contractual requirements.
• Deliver projects into production in coordination with IT teams and external partners.
• Maintain architecture, configuration, and hardening standards for network environments.

Connaissances

Enterprise network administration

Incident management

Risk analysis

Monitoring and reporting

Vendor management

Continuous improvement

Customer-centric mindset

Multi-site operations

Network security technologies

ISO 27001 knowledge

Project leadership

Analytical skills

Formation

4 to 5 years of higher education

Outils

Firewalls

EDR

Endpoint protection

Anti-spam

Anti-phishing

Web filtering

Monitoring tools

Description du poste

The IT Team is looking for the new IT Supervisor Network & Security, to join the Paris Corporate Office.

The IT Supervisor Network & Security is responsible for the availability, performance, and security of network infrastructures and associated protection systems.

The role leads operations, infrastructure evolution projects, and security initiatives to ensure a high level of service across the entire scope.

Reporting directly to the Head of IT, Corporate, the position works closely with the Director of IT, Digital Workplace & Information Security on security, compliance, and risk management topics.

The role is responsible for implementing the security policies, standards, and controls defined at IT leadership and compliance level.

Missions

• Oversee the operation, administration, and evolution of network infrastructures (LAN, WAN, Wi‑Fi, VPN, segmentation, remote access) and associated security components.
• Deploy, maintain, and optimize security solutions (firewalls, EDR, endpoint protection, anti-spam, anti-phishing, web filtering, monitoring tools).
• Implement security policies, procedures, standards, and action plans defined by IT leadership and compliance.
• Conduct technical risk assessments, identify vulnerabilities, and lead remediation plans.
• Contribute to security incident management, investigation, response coordination, and lessons learned.
• Ensure compliance with internal, regulatory, and contractual requirements.
• Deliver projects into production in coordination with IT teams and external partners.
• Maintain architecture, configuration, and hardening standards for network environments.
• Manage vendors and service providers, ensuring service quality and contractual compliance.
• Provide recommendations for continuous improvement.
• Contribute to the overall improvement of cybersecurity maturity.

Profile

Skills

• Enterprise network administration and security
• Incident management and remediation
• Risk analysis and vulnerability management
• Monitoring, documentation, and reporting
• Vendor management and cross-functional coordination
• Continuous improvement and standardization
• Customer-centric mindset
• Experience in operating and securing enterprise network infrastructures in a multi-site environment
• Strong knowledge of network architecture, routing, Wi‑Fi, VPN, and segmentation principles
• Proven experience with network security technologies (firewalls, MFA, conditional access, EDR, monitoring tools)
• Knowledge of security frameworks and best practices (e.g., ISO 27001)
• Ability to lead technical projects and coordinate external partners
• Strong analytical skills, rigor, autonomy, and service-oriented mindset
• Ability to work in an international and demanding environment

Education and experience

4 to 5 years of higher education

Languages

Fluency in English.

Benefits

• Remuneration between 39 000 and 45 000 gross annual
• Meal allowance (€185,86/month)
• 75% coverage of public transportation costs
• Thirteenth-month bonus
• Team-building activities
• International and stimulating environment
• And more!