Hybrid Network Engineer — High-Performance Data Center & SDN

RZR Global Inc.; Poland; Hybrid; PLN 341,000 - 530,000; Full time

Benefits offered by this job

Hybrid work

Job summary

RZR Global Inc. is seeking a Network Engineer to own design, implementation, and day-to-day management of a high-performance network infrastructure for a real-time bidding platform. You will work with Mellanox Spectrum hardware, Cumulus Linux, and Netris to build a low-latency fabric in a hybrid Bay Area/ Virginia setting.

You will collaborate with global infra and backend teams to ensure scalable, secure, and automated networking in production, with emphasis on performance and reliability.

Qualifications

• 3+ years of professional network engineering experience (6+ years for Senior-level).
• Deep familiarity with Mellanox Spectrum switches and ConnectX adapters.
• Strong proficiency in Cumulus Linux (Debian-based) and Linux administration.
• Hands-on experience with Netris for VPC-style networking on-prem or in hybrid cloud.
• Expert-level knowledge of BGP, OSPF, EVPN-VXLAN, and LACP.
• Proficiency in Python or Go for network automation.
• Bachelor's or Master's in Computer Science, Engineering, or related field.

Responsibilities

• Design, deploy, and maintain high-density data center networks using Mellanox gear.
• Administer and optimize network nodes running Cumulus Linux for stable routing and switching.
• Manage network operations with Netris in a SDN-capable environment.
• Monitor and tune network performance for real-time systems (latency, throughput).
• Implement security measures: firewall rules, VPNs, ACLs to protect assets.
• Develop automation workflows to reduce manual config and speed deployments.

Skills

Network engineering

Mellanox Spectrum familiarity

Cumulus Linux proficiency

Netris networking

BGP/OSPF/EVPN-VXLAN/LACP knowledge

Python or Go

Education

Bachelor's or Master's degree in Computer Science or related field

Tools

Mellanox Spectrum switches

ConnectX adapters

Cumulus Linux

Netris

Job description

RZR Global Inc. is seeking a Network Engineer to own design, implementation, and day-to-day management of a high-performance network infrastructure for a real-time bidding platform. You will work with Mellanox Spectrum hardware, Cumulus Linux, and Netris to build a low-latency fabric in a hybrid Bay Area/ Virginia setting.

You will collaborate with global infra and backend teams to ensure scalable, secure, and automated networking in production, with emphasis on performance and reliability.