Network Engineer - SD WAN

NineTech; Düsseldorf; Hybrid; EUR 90,000 - 120,000; Part time

Benefits offered by this job

Hybrid work

Job summary

NineTech in Düsseldorf seeks an experienced Network Engineer specializing in Cisco Wireless and SD-WAN to design, implement, and optimize enterprise network services. The role emphasizes Cisco wireless technologies, SD-WAN edge deployments, routing, switching and network access control.

This is a 6‑month contract with hybrid working, ASAP start, and collaboration with local and international IT teams. The ideal candidate has 10+ years of hands-on experience, fluent English and German, and valid

Qualifications

• 10+ years hands-on enterprise network engineering experience.
• Strong Cisco routing and switching experience.
• Proven hands-on experience with Cisco enterprise wireless technologies (Catalyst and controllers).
• Experience with Cisco SD-WAN (Viptela or Catalyst).
• Experience with Cisco ISE for Network Access Control.
• Exposure to cloud networking connectivity.

Responsibilities

• Design, deploy, configure and support enterprise Cisco wireless infrastructure and controllers.
• Conduct wireless site surveys and performance assessments.
• Implement and maintain Cisco SD-WAN deployments and edge devices.
• Support and administer Cisco ISE and Catalyst Center.
• Maintain and improve LAN/WAN infrastructure (routing, switching).
• Coordinate with external providers for circuit installations and escalations.
• Document network diagrams, configurations, and runbooks.

Skills

Cisco wireless

SD-WAN

Routing & Switching

Network security

NAC (ISE)

TCP/IP/DNS/DHCP

Wireshark/tcpdump

German & English communication

Education

Bachelor's degree in CS/Telecom/Equivalents

Tools

Cisco ISE

Catalyst Center

Job description

Network Engineer - Cisco Wireless & SD-WAN

Contract Duration: Initial 6 Months

Contract Type: Contract

Working Hours: Standard German Business Hours

Start Date: ASAP

Work Authorisation: Valid EU work authorisation required

Role Overview

We are seeking an experienced Network Engineer specialising in Cisco Wireless and SD-WAN to support and enhance enterprise network infrastructure in Düsseldorf, Germany.

This is an initial 6-month contract offering hybrid working. The successful candidate will work closely with local infrastructure teams and the wider network engineering organisation, taking responsibility for the design, implementation, optimisation and troubleshooting of business-critical network services.

The role will have a strong focus on Cisco wireless technologies, Cisco SD-WAN, routing and switching, with additional exposure to network access control and cloud networking.

Key Responsibilities

• Design, deploy, configure and support enterprise Cisco wireless infrastructure, including Catalyst wireless controllers and access points.
• Conduct wireless site surveys, performance assessments and network optimisation activities.
• Implement, configure and maintain Cisco SD-WAN solutions, including Viptela/Catalyst SD-WAN edge deployments, policy configuration and circuit turn-ups.
• Support and administer Cisco Identity Services Engine (ISE) and Cisco Catalyst Center.
• Maintain and improve enterprise LAN/WAN infrastructure, including routing and switching.
• Support cloud networking connectivity and integration.
• Troubleshoot complex network connectivity, wireless performance and infrastructure issues, conducting root cause analysis and implementing corrective actions.
• Coordinate with external service providers on network circuit installations, troubleshooting and escalations.
• Maintain accurate technical documentation, including network diagrams, configuration standards and operational runbooks.
• Collaborate with local IT teams and wider network engineering stakeholders to ensure network availability, performance and security.
• 10+ years of hands-on enterprise network engineering experience.
• Strong Cisco routing and switching experience.
• Proven hands-on experience with Cisco enterprise wireless technologies, particularly Catalyst and controller-based environments.
• Practical experience implementing and supporting Cisco SD-WAN, including Viptela or Catalyst SD-WAN.
• Experience with Cisco ISE for Network Access Control (NAC).
• Knowledge and experience of Cisco Catalyst Center.
• Exposure to cloud networking technologies and connectivity.
• Strong understanding of TCP/IP, subnetting, DNS, DHCP and routing protocols, including BGP and OSPF.
• Excellent network troubleshooting skills, including packet analysis using Wireshark and tcpdump.
• Fluent written and spoken English and German.
• Valid EU work authorisation.

Desirable Skills & Qualifications

• CCNP Enterprise certification or higher.
• Experience with enterprise firewalls and VPN technologies, including Cisco ASA/FTD and Palo Alto.
• Network automation and scripting experience using Python and Ansible.
• Experience working within large-scale, geographically distributed enterprise network environments.

Ideal Candidate

The ideal candidate will be a senior, hands-on network engineer with extensive Cisco enterprise networking experience and strong specialist knowledge of wireless and SD-WAN technologies.

You will be confident managing complex network environments, delivering infrastructure improvements, troubleshooting critical issues and working collaboratively with both local and international technical teams.

Strong communication skills, fluency in German and English, and the ability to work independently in a hybrid environment are essential.

• Duration: Initial 6-month contract.
• Working Arrangement: Hybrid.
• Working Hours: Standard German business hours.
• Start: ASAP.
• Work Eligibility: Valid EU work authorisation is mandatory.