Senior Network Engineer (all genders)

Contabo GmbH; Berlin; Vor Ort; EUR 90.000 - 120.000; Vollzeit

Benefits dieser Stelle

Remote or hybrid with flexible hours

EU-wide offices with Berlin, Cologne,

Flexible working arrangement

Own AI data center project involvement

Competitive compensation package

Company events and team activities

Professional development opportunities

Zusammenfassung

Contabo GmbH is seeking a Senior Network Engineer to own the network backbone from day one. You will design, build and operate complex network, server, and security systems across Europe, with a focus on the new AI data center and existing LTG infrastructure.

This is a full-time, permanent role offering remote-first culture with hybrid or on-site options near Berlin, Cologne, Hamburg or Munich. You will monitor traffic, compile KPIs for management, document runbooks, and collaborate with

Qualifikationen

• Minimum 5 years hands-on experience with complex, scalable networks and fabric infrastructures.
• Experience with Leaf-Spine and BGP EVPN VXLAN exposure is preferred.
• Strong WAN connectivity, data centre peering, uplink management, VPN, and IPv6.
• Security administration and DDoS mitigation experience.
• Scripting and automation skills with Ansible, Terraform, Python, or similar.
• Strong analytical and communication skills.
• Experience with NAC, BGP Flowspec, Proxmox, and IPAM such as NetBox.
• German language skills alongside excellent English; Arista cert or Cisco knowledge; IT apprenticeship.

Aufgaben

• Own the network backbone and drive commissioning through stable production operations.
• Design, build, and operate complex network, server, and security systems; resolve faults.
• Harden network security with scrubbers, firewalls, ACLs, and NAC; monitor performance.
• Coordinate with external providers and remote hands; maintain runbooks and diagrams.

Kenntnisse

Networking

BGP EVPN

Leaf-Spine

VXLAN

Arista EOS

Cisco

WAN connectivity

Automation scripting

Kubernetes basics

German + English

Ausbildung

Completed IT apprenticeship

Tools

Arista EOS

Nokia Deepfield

Grafana

Check_MK

Zabbix

Ansible

Terraform

Python

Proxmox

NetBox

Jobbeschreibung

We are looking for a full-time, permanent Senior Network Engineer to start as soon as possible. We live remote-first, but you have the freedom to choose whether you want to work hybrid or completely on-site due to your proximity to one of our locations (Berlin, Cologne, Hamburg, Munich).
Contabo Group operates one of Europe's largest cloud infrastructure platforms, with data centres across Europe and beyond. As our new Senior Network Engineer, you take on the network backbone that thousands of customers rely on every day, with real ownership from day one.
Right now, the biggest milestone on your plate is the build out of our new AI data centre. You inherit a fully designed Leaf-Spine architecture built on Arista EOS, BGP EVPN, and VXLAN, take ownership of it, refine it where it needs refining, and drive everything from commissioning through to stable production operations. Alongside that, you keep our existing LTG infrastructure running reliably: you design, build, and operate complex network, server, and security systems, analyse and resolve faults, and harden our network security through scrubbers, firewalls, ACLs, and NAC.
You monitor network traffic and infrastructure performance, extrapolate the KPIs that matter to management, and coordinate with external service providers and remote hands across the globe. You keep our network diagrams, runbooks, change logs, and system documentation in good shape, and you work closely with Platform Engineering on Cilium BGP peering, Kubernetes node network configuration, and IPAM, acting as the ongoing interface between NetOps and Platform.
You join a self-organising, agile team that owns its problems end to end, from analysis to resolution, without micromanagement. On top of that, you will have real room to grow into infrastructure automation, DDoS mitigation with Nokia Deepfield, observability, and BGP EVPN fabric engineering, alongside plenty of national and international project work.
You report directly to our Head of Network and become the permanent owner of everything networking related at Contabo Group, Blue and Black alike. Communication, team orientation, problem solving, and analytical thinking matter just as much here as deep technical expertise, since you will regularly work across teams and explain complex topics to people outside networking.

What convinces us

Your personality, paired with:

• minimum 5 years of hands‑on experience with complex, scalable networks and fabric infrastructures on Cisco and/or Arista, ideally with real Leaf‑Spine and BGP EVPN VXLAN exposure
• strong expertise in WAN connectivity, data centre peering, uplink management, VPN, and IPv6
• strong expertise in security administration and DDoS mitigation (e.g. Nokia Deepfield, Aurologic), plus solid monitoring skills with tools like Grafana, Check_MK, or Zabbix
• good scripting and automation skills with Ansible, Terraform, Python, or similar
• strong analytical and strategic thinking, paired with clear, confident communication
• a results‑driven, hands‑on mindset with a high standard of performance, customer orientation, and composure under pressure
• genuine team spirit, reliability, and a self‑driven way of working that thrives without micromanagement
• experience with Network Access Control solutions, BGP Flowspec, virtualisation (Proxmox), and IPAM systems such as NetBox
• strong conflict‑handling skills, a knack for building contacts across teams, and openness to change
• a basic understanding of Kubernetes networking, ideally paired with an Arista certification (or equivalent Cisco knowledge), a completed IT apprenticeship or equivalent, and German language skills alongside excellent English

We know that you may not currently meet all the requirements. But if you come to us with the right amount of commitment and enthusiasm, we can take off together and make a big difference.

Awesome Prospects

At Contabo, we are constantly evolving. Our growth creates space for new ideas, ownership, and real impact for people who want to make a difference.

What defines us is trust, direct communication, and an open feedback culture. We believe the best solutions are built together and that everyone has the opportunity to contribute, grow, and leave their own footprint.

Additionally, we offer:

• Work the way that fits your life – Remote or hybrid with flexible hours for a healthy work‑life balance and the same technical equipment at home as in the office
• Experience real freedom – Workation across the EU and in our summer office in Mallorca
• Stay active and healthy – Access to EGYM Wellpass and thousands of fitness and wellness facilities
• Enjoy exclusive perks – Attractive discounts on many products and services through our corporate benefits program
• Recharge your energy – 30 days of vacation plus additional days off on Christmas Eve and New Year’s Eve
• Give back – An extra day off to get involved in social activities through our Volunteer Day
• Make an impact – Take ownership and bring your ideas to life with real creative freedom
• Keep growing – Individual professional and personal development opportunities in an innovative tech environment
• Feel comfortable where you work – Modern, conveniently located offices across our European locations
• Be part of a diverse team – Work in an international environment shaped by diversity
• Create lasting memories – Company events and team activities you won’t forget