Ralliant Technology/Software

Senior Network Engineer

Viersen, Germany In person Full-time
  • Job Title: Senior Network Engineer
  • Location: [Remote / Hybrid]
  • Job Type: Full-time
  • Department: IT / Infrastructure / Network Operations
  • Reports To: IT Director

About the Role

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.

Key Responsibilities

  • 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

Required Qualifications

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

LI-MP1

Job description provided by Ralliant.
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