You design, install and maintain the network and server infrastructure for the L-mobile Group
You plan and implement network segmentation and security measures (firewall, WAF, IPS, MFA)
You operate and expand cloud and virtualization platforms (Microsoft Azure, Wortmann TerraCloud, VMware)
You are responsible for site networking, VPN solutions and endpoint hardening
You maintain and monitor email systems including security mechanisms (spam filters, SPF, DMARC, DKIM)
You work closely with our management, Head of Development, CISO and external data protection officer
You develop and optimize concepts, policies and contingency plans for IT security and data protection
You plan budgets and act as the central interface between IT and software development
You document system configurations and support audits and internal security reviews

Completed IT training (e.g., IT specialist, IT technician), degree or comparable qualification
At least 3 years of professional experience in network and server administration, ideally 5 years
Solid knowledge of network technologies (VLAN, routing, VPN) and IT security
Experience with virtualization, storage, backup and cloud infrastructures (Azure, Veeam, VMware)
Practical experience with Sophos firewalls, HP/Aruba switches and common IT security solutions
Good knowledge of Windows Server administration, basic knowledge of Linux
Strong service orientation, analytical thinking and an independent working style
Strong communication skills with native-level German and fluent English in speech and writing (C1)

High flexibility: flexible working hours, mobile working, 30 days of vacation, working time account – you can take time off for overtime
€50 per month tax-free benefit in addition to salary via the Probonio app (multi-benefit platform)
Daily freshly prepared, tasty and subsidized lunch in our on-site restaurant “Cooki Luki”
Freedom and dynamism: owner-managed company with no investor participation
A great, diverse team that celebrates successes together and supports one another in challenges
Grow beyond yourself: in-house learning & development and individual expert and leadership coaching
Additional extras such as ergonomic and modern workstations, JobRad, company and sports events, drinks and fruit, company pension plan, and more

Senior In-house IT Consultant – Infrastructure & Security

Key skills