Senior Network Engineer

The French Sourcer; Genf; Vor Ort; CHF 120.000 - 170.000; Vollzeit

Zusammenfassung

The French Sourcer in Geneva is seeking a Senior Network Engineer to design, deploy, and operate a multi-site network spanning offices, data centres, and cloud environments. You will manage LAN/WAN/WLAN, firewalls, VPNs, and secure remote access while ensuring availability and security across global operations.

Ideal candidates have 8+ years of enterprise networking experience, strong certifications, and proven ability to lead projects with external providers.

Qualifikationen

• 8+ years of experience in enterprise network engineering and administration.
• Strong knowledge of routing, switching, LAN, WAN, and wireless technologies.
• Experience designing and operating networks across multiple sites.
• Cloud-integrated and hybrid network environments experience.
• Strong knowledge of firewalls, VPNs, intrusion detection and prevention, and secure remote access.
• Experience troubleshooting complex third-level network incidents.
• Understanding of high availability, capacity planning, disaster recovery, and lifecycle management.
• Experience leading network projects and coordinating external service providers.
• Familiarity with IT service management and enterprise architecture standards.
• Professional-level networking certification, with advanced certification considered an advantage.
• Ability to work autonomously and communicate clearly with stakeholders.
• Availability to participate in an on-call rotation.

Aufgaben

• Designing, deploying, and maintaining network infrastructure across international offices and data centre environments
• Managing LAN, WAN, WLAN, routing, switching, and secure remote connectivity
• Supporting hybrid environments spanning on-premise infrastructure and cloud networking
• Maintaining next-generation firewalls, VPN gateways, and network security controls
• Monitoring network availability, performance, capacity, and security
• Acting as the final escalation point for complex network incidents and third-level support
• Investigating connectivity and performance issues across sites, providers, systems, and cloud environments
• Planning network capacity, hardware replacement, and infrastructure lifecycle activities
• Contributing to disaster recovery and business continuity planning
• Leading network projects from technical design through implementation and operational handover
• Working with cybersecurity and platform engineering teams on shared infrastructure requirements
• Managing telecommunications providers, external service partners, and associated service levels
• Maintaining network architecture, configurations, operating procedures, and technical documentation
• Participating in an on-call rotation for critical infrastructure

Kenntnisse

Routing & Switching

LAN / WAN / Wireless

Security & VPNs

Cloud networking

Network incident troubleshooting

Project leadership

External service coordination

On-call readiness

Ausbildung

Networking certification

Jobbeschreibung

Design and operate the network infrastructure connecting a global organisation, with responsibility for availability, security, and long-term evolution.

Senior Network Engineer - Geneva

Geneva, Switzerland · Permanent · On-site

What you'd actually work on

• Designing, deploying, and maintaining network infrastructure across international offices and data centre environments
• Managing LAN, WAN, WLAN, routing, switching, and secure remote connectivity
• Supporting hybrid environments spanning on-premise infrastructure and cloud networking
• Maintaining next-generation firewalls, VPN gateways, and network security controls
• Monitoring network availability, performance, capacity, and security
• Acting as the final escalation point for complex network incidents and third-level support
• Investigating connectivity and performance issues across sites, providers, systems, and cloud environments
• Planning network capacity, hardware replacement, and infrastructure lifecycle activities
• Contributing to disaster recovery and business continuity planning
• Leading network projects from technical design through implementation and operational handover
• Working with cybersecurity and platform engineering teams on shared infrastructure requirements
• Managing telecommunications providers, external service partners, and associated service levels
• Maintaining network architecture, configurations, operating procedures, and technical documentation
• Participating in an on-call rotation for critical infrastructure

Where it gets technically interesting

• A multi-site network supporting teams across Europe and North America
• Hybrid connectivity between offices, data centres, cloud platforms, and external service providers
• Routing, switching, and wireless infrastructure operating across different locations and technical environments
• Network security involving firewalls, intrusion detection and prevention, VPNs, and secure remote access
• Availability requirements for systems supporting business-critical financial and operational activities
• Complex incidents where the source may sit across network infrastructure, cloud services, security controls, or third-party providers
• Capacity and lifecycle planning across infrastructure that cannot be upgraded or replaced at the same time
• Disaster recovery requirements that need to be tested and maintained, not simply documented

What we're looking for

• 8+ years of experience in enterprise network engineering and administration
• Strong knowledge of routing, switching, LAN, WAN, and wireless technologies
• Experience designing and operating networks across multiple sites
• Practical experience with cloud-integrated and hybrid network environments
• Strong knowledge of firewalls, VPNs, intrusion detection and prevention, and secure remote access
• Experience troubleshooting complex third-level network incidents
• Understanding of high availability, capacity planning, disaster recovery, and infrastructure lifecycle management
• Experience leading network projects and coordinating external service providers
• Familiarity with IT service management and enterprise architecture standards
• Professional-level networking certification, with advanced certification considered an advantage
• Ability to work autonomously and communicate clearly with infrastructure, security, and business stakeholders
• Availability to participate in an on-call rotation

The company

A privately held international investment organisation headquartered in Geneva, with operations across several financial centres in Europe and North America.

The organisation manages a diversified portfolio and operates in an environment where confidentiality, infrastructure availability, and security are essential. The technology team supports international offices, business-critical systems, and a combination of on-premise and cloud environments.

Languages: Fluent French and English.