Senior Software Engineer, Software Defined Networking Senior Software Engineer, Software Defined Networking (Go/C)

Location: Hybrid in Helsinki, with three days per week in the office

Company

Builds and operates a full-stack AI cloud spanning data centers, hardware, and a cloud platform for AI teams.

What you will do

• Design and implement networking features end to end, from packet paths to customer-facing APIs.
• Build and extend the C-based dataplane close to the underlying hardware.
• Design and operate the Go-based distributed control plane, including network state storage, reconciliation, and fleet-wide application.
• Turn prototypes into products with limits, quotas, and customer documentation.
• Monitor and improve performance while debugging issues across hardware, dataplane, and control plane.
• Own operational capabilities including metrics, alerting, upgrades, and rollback, and collaborate on hardware specifications and network design.

Requirements

• Strong Go skills, or systems programming experience in another language with the ability to transition to Go.
• Production experience writing performance-sensitive systems software in a low-level language.
• Experience with distributed systems where state correctness is critical.
• 6+ years of experience building and operating production systems software.
• Solid understanding of cloud networking primitives, including VPCs, load balancers, and firewalls.
• Ability to own systems end to end, including their operational aspects.

Nice to have

• Experience with DPDK, DOCA, XDP, eBPF, or vendor SDKs for high-performance packet processing.
• Experience with DPU or SmartNIC platforms, offload models, or BlueField.
• Knowledge of Linux networking and virtualization, including netdev, tc, nftables, namespaces, and SR-IOV.
• Contributions to the kernel, DPDK, or other open-source networking projects.

Culture & Benefits

• Full-time, permanent employment with hybrid work in Helsinki.
• Cash and equity compensation with healthcare, lunch, wellbeing, and other benefits.
• Profitable operations with rapid, sustained growth.
• Work with engineers, researchers, and partners across the global AI ecosystem in an international environment.

Hiring process

• Applications must be submitted through the careers page; applications by email are not accepted.
• Hiring proceeds without an artificial deadline and moves forward once a suitable candidate is identified.