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# Senior Network Engineer

- **Company:** Ralliant
- **Location:** Viersen, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Wireless LAN, Amazon Web Services, Microsoft Azure, Border Gateway Protocol, Cisco PIX, Cloud Computing, Cloud Computing Security, Cloud Engineering, Computer Networks, Data Centers, Dynamic Host Configuration Protocol, Disaster Recovery, Dynamic Multipoint Virtual Private Networks, Domain Name System (DNS), Enhanced Interior Gateway Routing Protocol, Hot Standby Router Protocol, Internet Protocol Security (IP SEC), IP Routing, Subnetting, Virtual Private Networks (VPN), Python (Programming Language), Network Security, Network Monitoring, Routing, Network Segmentation, Packet Analyzer, Open Shortest Path First (OSPF), Peering, Remote Access Technology, Ansible, TCP/IP, Tcpdump, Wireshark, Virtual Local Area Networks, Virtual Router Redundancy Protocols, Wide Area Networks, Wireless Networks, Wi-Fi Technology, Data Logging, Identity Services Engine, System Availability, Firewalls (Computer Science), Amazon Virtual Private Cloud (VPC), Information Technology, SolarWinds (Software), Api Design, Terraform, Oracle Cloud Infrastructure, Cisco
- **Published:** October 28, 2026
- **Apply:** https://www.adzuna.de/details/5944721868

## About the Role

* Bachelor's degree in IT/Computer Science or equivalent work experience.
 * Hands-on enterprise network engineering experience.
 * Strong knowledge of:
 + Routing and switching (Cisco)
 + TCP/IP, subnetting, DNS, DHCP, InfoBlox
 + WAN technologies (DMVPN, SD-WAN, DIA, broadband)
 + Wireless networking (Cisco/Meraki) with ISE Infra
 * Experience with:
 + Firewalls (Palo Alto / Cisco ASA/FTD)
 + VPN (site-to-site, remote access)
 + Network segmentation and security best practices
 * Strong troubleshooting skills using packet capture tools (Wireshark/tcpdump).
 * Excellent communication and stakeholder management skills.

Preferred Qualifications

 * Experience with SD-WAN (Viptela, etc.)
 * Cloud networking experience: AWS / Azure / OCI
 + VPC/VNet design, VPN, Direct Connect/ExpressRoute
 * Automation experience (Python, Ansible, Terraform, API-based networking).
 * Experience with NAC solutions (Cisco ISE, ClearPass).
 * Knowledge of compliance/security frameworks (NIST, CMMC, ISO 27001).
 * Certifications preferred:
 + CCNP / CCIE (Enterprise/Security)
 + PCNSE / NSE

## Description

We are seeking a Senior network engineer to design, implement, secure, and support enterprise network infrastructure across LAN/WAN/WiFi, data centers, and cloud connectivity. This role requires deep technical expertise, strong troubleshooting skills, and the ability to lead network initiatives from planning through execution., * Design, implement, and maintain enterprise network infrastructure (LAN/WAN/WLAN).

 * Manage and optimize routing and switching environments (SDWAN, SDA, BGP, OSPF, EIGRP, VLANs, STP, HSRP/VRRP).
 * Configure and support firewalls, VPNs, and network security controls.
 * Lead network upgrades, migrations, and major infrastructure projects.
 * Support and troubleshoot network performance issues and outages (root cause analysis).
 * Monitor network health using tools like SolarWinds / ThousandEyes (or similar).
 * Maintain network documentation: diagrams, IP schema, standards, and runbooks.
 * Work with service providers for circuit turn-ups, troubleshooting, and escalations.
 * Ensure high availability, redundancy, and disaster recovery readiness.
 * Mentor junior engineers and provide technical guidance.
 * Participate in on-call rotation and support after-hours maintenance activities.

Cloud Networking (AWS/Azure/OCI)

 * Design and support cloud network architecture, including:
 + AWS VPC / Transit Gateway / Route Tables / NACLs / Security Groups
 + Azure VNet / VNet Peering / UDR / NSGs / Cloud Firewall
 * Implement secure hybrid connectivity:
 + IPsec site-to-site VPN
 + AWS Direct Connect / Azure ExpressRoute
 * Implement cloud segmentation and secure routing patterns for CUI environments.
 * Support cloud security integrations:
 + Centralized logging/monitoring
 + Network traffic visibility and alerting
 * Partner with cloud engineering teams to ensure compliant connectivity for workloads handling CUI