System Engineer & Security Specialist "Infrastructure & Cloud"
Oneconsult AG
Zürich
Key information
- Publication date:31 October 2025
- Workload:100%
- Contract type:Permanent position
- Place of work:Zürich
Job summary
Join us as a System Engineer in a dynamic IT environment! You'll enhance cybersecurity while collaborating with passionate colleagues.
Tasks
- Analyze and optimize existing systems for security and functionality.
- Develop and review concepts focusing on architecture and modern technology.
- Manage operational tasks in security-sensitive IT infrastructures.
Skills
- Proven experience in managing medium to large IT infrastructures.
- Strong project management and communication skills.
- Deep technical and security knowledge across various IT domains.
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What to expect
Do you feel at home in security-sensitive IT environments? For assignments in exciting client mandates as well as to significantly support our own IT, we are looking for an experienced, passionate, and implementation-strong System Engineer and Security Specialist who wants to make an impact. Whether cloud (M365/Azure) or on-premise – you master the entire spectrum with pleasure: from conception and setup through configuration to highly professional and secure operation.
Your varied range of tasks includes the following:
- System optimization: You analyze and optimize existing systems in complex environments regarding security, functionality, and automation (e.g., Active Directory/EntraID, Microsoft Client/Server infrastructure, backup, storage, virtualization, PKI, monitoring/logging, M365, Azure, etc.)
- IT architecture development: You create and review concepts focusing on architecture, security, and modern technology. Significant involvement in the corresponding implementation of systems in several of the mentioned areas
- Secure operations: You take on operational tasks within security-sensitive IT infrastructures with a high demand for ongoing optimization
- High-level support & project work: You contribute to internal 2nd and 3rd level support as well as demanding IT projects
What we offer you
We at Oneconsult are passionate about increasing cyber resilience, rely on structure, quality, and see ourselves as mentors. You are at the center of the successful execution of internal and external IT projects. You are in the midst of a constantly learning organization – helping team members and you will always find someone who takes time for you and supports you when things get challenging.
You can also look forward to the following:
- Your voice counts! We take time for the opinions and ideas of our employees and incorporate them into decisions
- A "du" culture where mutual respect, tolerance, and appreciation are lived, and feedback is an important part of our daily routine
- We offer you scope for action and decision-making so that you can gain your own experiences and develop further
- A structured onboarding program
- Modern and spacious offices, 2 minutes from Saalsporthalle and Sihlcity train stations, with ergonomic workstations with sit/stand desks
- Possibility for home office
- Participation in health-promoting measures up to 500 CHF
- Smartphone with flat-rate subscription
- Team events
- Internal and external training opportunities
- 40-hour week and at least 5 weeks of vacation
- Additional day off on your birthday
- ...and much more
What you bring
You convince with your project management skills as well as your communication strength. The following qualifications also round off your technical profile:
- Successfully completed basic IT education
- Solid and verifiable experience in operating and further developing medium to large IT infrastructures
- Deep technical and security know-how in several, preferably all, of the mentioned specialist topics as well as the relevant other system components such as network, firewall, WAF, DNS, etc.
- Familiar with the relevant ITIL processes as well as agile working methods (Scrum/Kanban/SAFe, etc.)
- Fluent German skills (C1/C2) as well as technical English (B2/C1)
- Impeccable reputation
Have we sparked the fire in you? We look forward to your call or your application documents directly. It is important to us to feel your passion for cybersecurity in your insightful application, so we leave it up to you how you want to convince us of that.
Please only direct applications: inquiries from recruiters/headhunters are not desired.