Senior Network Engineer (Enterprise Infrastructure) - GENEVA

Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their needs.

About the Role

Our client is a globalinvestment organization managing a diversified portfolio across financial services, life sciences, healthcare, digital health, real estate, and infrastructure. Their technology team supports a highly secure, international environment where reliability, scalability, and operational excellence are critical to business success.

We are looking for aSenior Network Engineerto lead the design, implementation, and optimization of aglobal enterprise network infrastructure. In this role, you will be responsible for architecting secure, high-performance networking solutions across on-premises and cloud environments while ensuring the availability, resilience, and security of mission-critical systems.

CONTRACT: Permanent (CDI)

COMMITMENT: Full-time

LOCATION: Geneva, Switzerland

PROCESS: Client Interview Process

NOTES:

• Fluent French and English are mandatory
• Participation in an on-call rotation is required
• CCNA certificate mandatory

Key Responsibilities

• Design, implement, and maintainCisco/HPE enterprise networks,Fortinet security infrastructure, andAzure cloud networking across multiple international locations.
• Lead the evolution ofhybrid network architectures spanning on-premises data centers and cloud environments
• Manage the lifecycle of network infrastructure, including capacity planning, hardware refreshes, and disaster recovery
• Configure and maintainfirewalls,VPNs, and secure network services
• Provide3rd-line technical support for complex networking incidents
• Collaborate with cybersecurity and infrastructure teams to improve network performance and security
• Manage relationships with telecommunications providers and external technology partners
• Ensure network monitoring, availability, and compliance with operational standards
• Contribute to infrastructure projects, architecture decisions, and continuous improvement initiatives
• Participate in an on-call rotation to support business-critical systems

• 8+ years of experience inenterprise network engineering
• Proven expertise withCisco and/orHPE Aruba enterprise networking solutions
• Hands-on experience withFortinet firewalls and network security technologies
• Experience designing and supportingMicrosoft Azure networking environments
• Strong expertise inrouting, switching, WAN, LAN, WLAN, VPNs, and network security
• Experience troubleshooting complex enterprise network infrastructures
• Professional networking certification (CCNP, JNCIP, Aruba, or equivalent)
• FluentFrench andEnglish

Preferred Qualifications

• Advanced networking certifications (CCIE, JNCIE, or equivalent)
• Experience within financial services or highly regulated industries
• Experience with network automation and infrastructure-as-code
• Knowledge of enterprise monitoring and observability platforms
• Experience with disaster recovery and business continuity planning