A. Lehmann Elektro AG
Gossau
Senior ICT Engineer – Network & Security 80-100%
- 20 September 2026
- 80 – 100%
- Permanent position
- Gossau
Job summary
Ready for the next step? Join us for exciting network and security projects!
Tasks
- Design and operate modern network and security infrastructures.
- Administer and optimize FortiGate firewalls and Alcatel-Lucent networks.
- Conduct security and network audits, analyze complex issues.
Skills
- Completed IT vocational training or comparable qualification.
- Strong knowledge of FortiGate and other NG-Firewalls.
- Experience in IT security, monitoring, and incident response.
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About the job
Ready for the next step? If you are interested in exciting network and security projects, want to take on responsibility, and are looking for an environment where you can develop further, then you are exactly right with us!
Apply now simply by email to personal@lehmann.ch We look forward to hearing from you! If you have any questions, our Head of Communication & Application, Patric Moser, Tel. 071 388 24 94, will be happy to assist you.
A. Lehmann Elektro AG | Marco Lehmann | Tellstrasse 4 | 9200 Gossau Tel. 071 388 11 22 | personal@lehmann.ch
Thanks to our well-coordinated teams, flat hierarchies, and family-like environment, we have become a leading company in building technology and IT in Eastern Switzerland. We are present at the locations Gossau, St.Gallen, Herisau, Waldkirch, Arnegg, Schänengrund, Niederteufen, and Konstanz.
To strengthen our team, we are looking for a motivated person in Gossau
What you bring:
- Completed vocational training as an ICT specialist EFZ, telematics technician, or comparable qualification; further education HF/FH is an advantage
- Several years of professional experience in planning, implementation, and operation of network and security solutions
- Sound knowledge of FortiGate or other NG firewalls
- Experience with Alcatel-Lucent Enterprise switching and wireless solutions is an advantage
- Know-how in network architectures, routing, switching, VLAN, QoS
- Know-how in IT security, monitoring, and incident response
- Analytical and solution-oriented thinking, initiative, and high service orientation
- Correct appearance, reliability, and strong communication skills
- Driving licence category B
Your tasks:
- Design, implementation, and operation of modern network and security infrastructures
- Administration and optimisation of FortiGate firewalls and Alcatel-Lucent networks
- Conducting security and network audits
- Analysis and resolution of complex faults (2nd and 3rd level)
- Consulting and supporting customers on security strategies and best practices
- Creation and maintenance of system and security documentation
- Knowledge transfer within the team as well as mentoring of apprentices and junior engineers
What to expect from us:
- An innovative, dynamic, and committed team
- Open and honest company management
- Modern and functional infrastructure
- Flexible working model (remote/hybrid possible)
- Interesting, varied, and challenging projects in the Microsoft cloud environment
- Freedom for your own ideas, personal responsibility, and co-creation
- Attractive training and development opportunities, especially in the Microsoft and cloud area