Cloud SDN Software Engineer

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Senior / Lead Cloud SDN Software Engineer

We are currently seeking a highly skilled Senior or Lead Cloud SDN Software Engineer to join an advanced infrastructure team for one of our key clients. If you live and breathe low-level networking, love contributing to open-source infrastructure, and want to shape the future of cloud networking platforms, this role is for you.

Offer & Contract Details

• Hourly Rate (B2B): * Senior: 130 – 145 PLN / hour

  • Lead: Up to 160 – 170 PLN / hour

• Start Date: ASAP

• Contract Duration (PO): Initial purchase order for 3 months, with subsequent extensions for 6 to 12 months.

Core Profile & Focus

This isn't a traditional networking role. You will be building, scaling, and developing the software-defined networking layer for modern cloud infrastructure, focusing heavily on:

• OpenStack ecosystem development (Cinder, Nova, and especially Neutron).

• Next-gen virtual networking via Open vSwitch (OVS) and OVN.

• API Development: Designing and building robust cloud network platform APIs using Golang.

Main Responsibilities

• Design & Operate: Own the software-defined networking (SDN) layer for large-scale cloud infrastructure.

• Open-Source Contribution: Actively contribute back to upstream projects including Open vSwitch, OVN, OpenStack Neutron, and the Linux Kernel.

• API Development: Design and develop high-performance networking APIs and cloud network platform products.

• Observability: Implement robust metrics, distributed tracing, and structured logging for network services.

• Automation: Build automation frameworks for network operations and day-to-day operational workflows.

• Incident Management: Lead root-cause analysis on complex network incidents and implement permanent code fixes.

Requirements

• SDN Expertise: Proven production experience with Open vSwitch (OVS) and OVN.

• Cloud Networking: Solid knowledge of VPC, NAT, VPN, BGP, VXLAN, load balancing, and DNS.

• Linux Deep Dive: Deep understanding of the Linux networking stack (namespaces, iptables, tc, and kernel subsystems).

• Cloud Integration: Experience integrating SDN solutions directly with OpenStack Neutron.

• Programming Skills: Strong coding skills in Go, Python, C/C++, or Bash.

• Cloud-Native Tech: Familiarity with Kubernetes networking and CNI plugins (e.g., Calico).

• Language: Good command of English (written and spoken).

Nice to Have

• Production experience with DPDK (Data Plane Development Kit).

• Experience leveraging AI tools to optimize your day-to-day engineering workflow.