Senior Linux Network Engineer

DataCrunch

full-time

Posted on: 1/28/2026

Location Type: Remote

Location: Finland

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About the role

Act as a subject-matter expert on host networking, bridging the gap between software teams and networking infrastructure
Partner closely with provisioning, platform, and networking teams to ensure optimal use of the host networking stack
Design, build, and troubleshoot software-defined networking solutions for containerized and virtualized workloads
Support and evolve OVN / OVS-based networking architectures to deliver high-performance, tenant-isolated connectivity
Identify, diagnose, and resolve performance bottlenecks across the host networking stack
Help software teams understand networking limitations, trade-offs, and best practices
Lead proof-of-concept work, configuration, and rollout of new networking components
Contribute to defining a unified hardware and software networking stack for servers, containers, and bare-metal nodes

7+ years of experience in Linux systems administration with a strong focus on networking
Deep expertise in the Linux networking stack (iptables / nftables, routing, network namespaces, overlay networks)
Solid working knowledge of FRR and EVPN
Strong understanding of software-defined networking (SDN) principles
Hands-on experience with virtualization technologies such as KVM, containers, and Kubernetes networking
Proven experience diagnosing and optimizing network and host-level performance

Benefits

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Applicant Tracking System Keywords

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Hard Skills & Tools

Linux systems administrationLinux networking stackiptablesnftablesroutingnetwork namespacesoverlay networksFRREVPNsoftware-defined networking

Soft Skills

subject-matter expertcollaborationproblem-solvingcommunicationleadership