Senior Network & Systems Engineer

Petracca; Pieterlen; On-site; CHF 120,000 - 190,000; Full time

Job summary

Petracca SA seeks a Senior Network & Systems Engineer to strengthen our IT team in Switzerland. You will design, secure, and operate our network, server, and cloud infrastructure while providing hands-on IT support and guidance to colleagues.

This on-site, permanent role requires strong Linux/Windows Server administration, virtualization, cybersecurity expertise, and the ability to lead technical improvements across our environment. Join a hands-on team focused on reliability and modernization.

Qualifications

• 5–8+ years in hands-on network and systems engineering.
• Advanced networking: routing, switching, VLANs, firewalls, VPNs, security.
• Experience administering Linux and Windows Server environments.
• Experience with virtualization, backups, and recovery.
• Strong cybersecurity knowledge and incident handling.
• Hands-on IT support and collaborative attitude.

Responsibilities

• Design, maintain, and improve network infrastructure.
• Configure switches, routers, firewalls, VPNs, VLANs, and Wi‑Fi; implement security measures.
• Investigate incidents and improve network reliability and security.
• Administer Linux and Windows Server environments.
• Manage virtualization platforms and backups.
• Provide Level 1–3 IT support and routine user assistance.
• Lead technical projects and document solutions.

Skills

Senior-level experience

Advanced networking

Linux & Windows admin

Cybersecurity fundamentals

Incident troubleshooting

IT support

Tools

Hyper-V

SonicWall

UniFi

PowerShell

Bash

Python scripting

Job description

Network, Security, Infrastructure & IT Support

Workplace type: On-site

Employment type: Full-time, permanent

About Petracca SA

Petracca SA is an established Swiss company specializing in the import and wholesale distribution of fresh fruits, vegetables, and food products.

Our daily operations rely on reliable IT infrastructure to support our warehouse, logistics, administration, and business-critical systems.

About the Role

Petracca SA is looking for an experienced and versatile Senior Network & Systems Engineer to strengthen our IT team.

We are seeking someone with strong expertise in networking, infrastructure, and cybersecurity who can independently troubleshoot complex problems, improve our IT environment, and guide colleagues technically.

This is a hands-on position combining advanced infrastructure engineering with everyday IT support.

One day you may be designing network architecture, configuring firewalls, troubleshooting servers, or improving cybersecurity. The next day, you may be helping an employee with Outlook, replacing a keyboard, or changing printer toner.

We are looking for someone who is comfortable with both and understands that keeping the business operational is always the priority.

Main ResponsibilitiesNetwork & Security

• Design, maintain, and improve company network infrastructure.
• Configure and troubleshoot switches, routers, firewalls, VPNs, VLANs, and Wi-Fi networks.
• Implement network segmentation and security measures; investigate complex incidents.
• Recommend improvements to network reliability, performance, and security.

Systems & Infrastructure

• Administer and troubleshoot Linux and Windows Server environments.
• Manage virtualization platforms and virtual machines.
• Support Active Directory, storage, backups, and disaster recovery systems.
• Maintain reliable server infrastructure and contribute to cloud services and modernization.

IT Support & Daily Operations

• Provide Level 1, Level 2, and Level 3 technical support when required.
• Troubleshoot computers, software, printers, tablets, and network connectivity.
• Handle routine requests, including hardware replacement, printer toner, and employee assistance.
• Support equipment installation, maintenance, onboarding, and monitoring of IT systems.

Technical Leadership

• Take ownership of complex technical problems and infrastructure improvements.
• Provide technical guidance and share knowledge with IT colleagues.
• Identify risks, propose practical solutions, and maintain clear technical documentation.

Required Skills & Experience

• Senior-level experience in network and systems engineering, ideally 5-8+ years in a hands-on role.
• Advanced networking expertise in routing, switching, VLANs, firewalls, VPNs, network security, and troubleshooting.
• Strong experience administering both Linux and Windows Server environments.
• Experience with virtualization, server infrastructure, backup, and recovery.
• Strong understanding of cybersecurity principles and infrastructure protection.
• Ability to independently resolve complex incidents and design practical technical solutions.
• Hands-on IT support experience, sound judgement, and a collaborative attitude.

Additional Skills - An Advantage

• Cloud platforms such as Microsoft Azure or AWS.
• Microsoft 365, Exchange Online, and cloud identity management.
• Hyper-V, SonicWall, UniFi, or similar technologies.
• PowerShell, Bash, or Python scripting; infrastructure monitoring and IT asset management tools.

Languages

• English: Mandatory - strong professional working proficiency.
• French or German: An advantage.

Personal Profile

• Experienced, independent, and comfortable taking responsibility for critical infrastructure and security.
• Proactive, reliable, and practical, with a willingness to handle both simple and advanced support tasks.
• Collaborative, service-oriented, and willing to share knowledge with the team.

What We Offer

• A varied technical role with substantial responsibility and autonomy.
• Opportunities to lead networking, security, and infrastructure improvements.
• Exposure to on-premises systems, virtualization, and cloud technologies.
• Involvement in important IT modernization projects in a hands-on team environment.

Work Authorization

Applicants must have the legal right to work in Switzerland.