Network & Proxy Support Team Lead

• Work Time Percentage: 100%
• Location: Geneva

Within the Information Technology Department, you will join a team of 12 engineers based in Geneva and collaborate with IT colleagues in more than 30 countries. Under the supervision of the IT Infrastructure Support Manager, you will lead a team of three network engineers.

You will combine people management with hands‑on engineering, ensuring that EFG’s business‑critical systems remain secure, resilient, and always connected in a demanding private banking environment.

• Lead, coach and develop a team of three network engineers, fostering a culture of accountability, collaboration and continuous improvement.
• Combine team leadership with hands‑on technical work on complex incidents and projects.
• Oversee day‑to‑day network and proxy operations, including incident, problem and change management.
• Plan and coordinate network and proxy upgrades, migrations and lifecycle activities in alignment with business and security requirements.
• Manage escalations, ensuring timely resolution of major incidents and clear communication with stakeholders.
• Manage and review third‑party providers and vendor contracts, ensuring service quality, cost effectiveness and adherence to SLAs.
• Ensure compliance with internal policies as well as regulatory, security and audit requirements relevant to network and security infrastructure.

• Collaborate closely with security teams to define, implement and maintain security policies, including URL filtering, cloud application and file filtering, DLP and access control.
• Configure, operate and maintain Zscaler solutions (ZIA, ZPA) and related components such as SIPA, cloud firewall, PAC files, NSS, ZCC…
• Manage corporate devices using Zscaler Client Connector (ZCC), ensuring secure and reliable connectivity.
• Troubleshoot and resolve Zscaler‑related issues by analysing logs, performing traces and applying appropriate corrective actions.
• Analyse network packet traces (PCAP), Fiddler logs and HTTP/HTTPS headers to identify and resolve complex connectivity and performance issues.
• Proactively suggest and implement improvements to network and proxy performance, capacity, scalability and security posture.

• Provide 2nd and 3rd level technical support for network and related services.
• Configure, install and maintain network devices and services (e.g. routers, switches, firewalls, load balancers, VPN, QoS).
• Support and maintain network connectivity for financial market data feeds and other latency‑sensitive services.
• Implement and maintain a continuous improvement process by defining, documenting and enforcing network and proxy standards, procedures and best practices.
• Interface with external suppliers and partners (integrators, telecom providers, market data vendors, etc.) to design, implement and support network solutions.
• Participate in 24x7 on‑call / on‑duty rotation (piquet) to support critical infrastructure.
• Monitor network and proxy performance, ensuring system availability, reliability and security.
• Monitor system resource utilisation, trends and capacity, and plan upgrades or optimisations accordingly.

• 6–10 years of experience in networking in complex, international environments.
• Strong knowledge of enterprise networking architecture and network security.
• Professional experience with Cisco technologies and Cisco ACI; financial services experience is a plus.

• Expert in LAN/WAN/MAN implementation and troubleshooting.
• Strong experience with firewalls (Fortinet and/or Check Point), VPN, IPSec and GRE tunnels.
• Proven expertise with Zscaler ZIA/ZPA and ZCC on corporate devices.
• Solid understanding of network and cloud connectivity design.
• Ability to analyse network traces (PCAP), Fiddler logs and HTTP/HTTPS headers.
• Knowledge of Python or another scripting language for automation;
  Zscaler certification is a plus.

• Strong communication skills; able to work effectively with technical and non-technical stakeholders.
• Experience managing third‑party providers and internal support teams.
• Rigorous, autonomous, proactive and service‑oriented, with strong documentation skills.
• Fluent in French and English, written and spoken.