Network Engineer

Senior Network Engineer / Network Specialist (m/f/d)

Location: Wiesbaden | Department: IT | Full-time, 37.5 hours per week | Start: As soon as possible | Permanent position | Reference: ISW4280

Salary range: €52,872–€81,768 gross per year, according to the applicable pay grade. The range reflects 12 monthly salary payments. Additional collective-agreement benefits, including vacation pay, an annual payment, and a future contribution, are provided separately and increase total compensation.

About The Company

InfraServ GmbH & Co. Wiesbaden KG operates the Wiesbaden Industrial Park, where approximately 5,800 people work across around 75 companies. As a partner to industry and regional businesses, the InfraServ group employs about 950 people across more than 100 professional fields. The company provides essential infrastructure and a broad range of services, including energy supply, wastewater treatment, technical support, construction, facility management, logistics, security, emergency services, occupational health, administration, and vocational training.

Our 40-person IT team manages the company’s IT infrastructure and delivers services spanning IT governance, operations, infrastructure, information and systems security, service desk support, applications, and digitalization. We value teamwork, accountability, and a strong service mindset, and we are committed to strengthening IT across the group and advancing its digital development.

About The Role

We are seeking an experienced Senior Network Engineer / Network Specialist to manage and develop our enterprise network environment. In this role, you will help ensure secure, reliable connectivity across corporate, industrial, and production settings. You will combine hands‑on network administration and second-level support with responsibility for infrastructure projects, technical standards, and coordination with internal teams and external service providers. This is a permanent, full-time position based in Wiesbaden, with flexible working arrangements where the role allows.

Qualifications

You have completed vocational training in information and communications technology, IT systems administration, or a comparable field, and bring several years of relevant professional and project experience. You have strong practical knowledge of administering and configuring network and communications components in enterprise environments, including Cisco LAN and WLAN, Fortinet or Check Point firewalls, cloud architectures, and Linux.

You have successfully led enterprise or infrastructure projects, guided project teams, and managed external partners. Cisco certifications such as CCNA or CCNP are an advantage. Experience with IEEE 802.1X authentication, Cisco DNA, scripting or automation, and security concepts is desirable. You take ownership, approach problems analytically, and develop practical solutions. Your communication style is open and dependable, and you work effectively with colleagues, customers, and service providers. You are service-oriented, collaborative, and able to represent technical priorities constructively. A valid driver’s license and professional proficiency in German, both written and spoken, are required.

Responsibilities

Administer, plan, and continuously improve the network infrastructure, central firewall, VPN, and security systems. Resolve technical incidents through second-level support, identify underlying causes, and implement lasting solutions. Plan and deploy IoT and production networks, supporting secure and dependable connectivity for industrial operations.

Lead and coordinate enterprise and infrastructure projects, including directing project teams and managing external service providers. Review and update policies, processes, and standards to maintain optimal availability and security. Create, maintain, and update network diagrams, switching plans, system records, and operational documentation. Stay current with emerging technologies and contribute ideas and expertise to ongoing improvement. Participate in on-call coverage and, when required, work outside standard hours.

Benefits

• 30 days of annual leave, with up to three additional days potentially available
• company pension plan, savings plan, and salary-conversion options
• supplementary care insurance and regular preventive health initiatives
• bike leasing
• mobile working
• flexible hours where operational requirements permit
• You can also access professional development through our ISW training center or external providers
• an on-site fitness studio with classes, physiotherapy, osteopathy, and nutrition advice
• free parking
• convenient transport links
• employee discounts
• a long-term working-time account that can support a self-funded leave of absence, such as a sabbatical

Equal Opportunity

InfraServ GmbH & Co. Wiesbaden KG is committed to fair and respectful recruitment. Employment decisions are based on role requirements, relevant qualifications, and experience. We welcome applications from candidates with diverse backgrounds and encourage all qualified applicants to apply online.