Senior Network Engineer

Senior Network Engineer

Onomondo is on a mission to revolutionize global IoT connectivity. We're here to redefine how connected devices communicate and we need great engineers to help us push the boundaries of what's possible.

Our work directly impacts millions of devices globally, ensuring seamless, low-latency, and highly available connectivity for mission-critical applications. Our services enable secure authentication, signaling, and messaging for devices using Onomondo SIM cards, across 680+ networks in 180+ countries

We're looking for an experienced Senior Network Engineer to join our Platform Engineering Team at our HQ in Islands Brygge.

As a Senior Network Engineer, you will help us design, operate, and evolve the network backbone of our mobile core and platform. You'll join a high-impact team shaping the way our systems connect, scale, and perform, while pushing the boundaries of what's possible with Linux networking, eBPF and cloud-native technologies.

Design, build, and operate our network infrastructure across cloud environments to support both our platform and our mobile core.

Manage and optimize Linux-based networking, including routing, firewalls, traffic shaping, and high-performance packet processing.

Implement and maintain container networking for Kubernetes clusters, including CNI configuration, service mesh integration, and security policies.

Explore how we can leverage eBPF to enhance observability, security, and performance of network workloads.

Collaborate with Platform Engineers and the Core Network Squad to build "paved roads" for secure and reliable networking across environments.

Ensure scalability, redundancy, and resilience in network design, meeting the high demands of global IoT connectivity.

Contribute to automation and Infrastructure as Code practices for network configuration and deployment (Terraform, Ansible, etc.).

Monitor, troubleshoot, and resolve complex network issues across multiple layers and platforms.

Extensive experience with cloud-native and traditional networking architectures

Strong hands-on experience with Linux networking (iptables/nftables, routing, tunneling, VLANs, VXLAN, BGP, etc.).

Understanding of cloud networking concepts in AWS, GCP, or Azure (VPCs, load balancers, routing, DNS, firewalls).

Ability to design and operate secure, high-availability network architectures.

Familiarity with automation tools like Terraform, Ansible, or similar.

Strong troubleshooting and performance optimization skills.

Collaborative, pragmatic approach, comfortable working across teams to enable others and reduce friction.

Proven experience in setting best practices and improving systems, processes and your own skillset.

What would make you stand out:

Proven skills in container networking and Kubernetes network operations (CNI plugins, service mesh, ingress/egress control).

Experience with eBPF for networking is highly desirable

A playful, ambitious culture where people are trusted to do what they do best.

A workspace that's one-of-a-kind—in both design and energy.

Legendary lunches, snack heaven, and events that actually bring people together.

Room to bring your personality and ideas into the way we work and collaborate.

1. Apply here with your CV (no picture or cover letter needed).

2. 30-minute screening call with our recruiter, Christian Payne.

3. In-depth technical interview with David (Engineering Manager for Platform Engineering) and Rune (Staff Platform Engineer)

4. Culture interview with Dana (VP Engineering) and David
   
   

Ready to Make an Impact?

Send us your CV and let's start the conversation.

Learn more about us and other opportunities