Senior Network Engineer - Remote, Global Infra Upgrades

Sii Poland; Lublin; On-site; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Great Place to Work

Solid financial situation

Centre of internal trainings

Profit sharing

Regular integration events and trips

Medical care

Job summary

Sii Poland is seeking an experienced Senior Network Administrator to manage production network platforms and lifecycle across global POPs, data centers, and backbone infrastructure.

You will collaborate with network engineers and vendors to upgrade and validate platforms, lead rollout efforts, and maintain operational documentation. Strong English skills and 5+ years in production networks are required.

Qualifications

• Minimum 5 years in production network environments.
• Experience with Cisco, Juniper, or Arista gear.
• Strong knowledge of BGP and IGPs (OSPF/ISIS).
• IPv4/IPv6 routing and large-scale networks.

Responsibilities

• Support lifecycle management for production network platforms across global POPs and data centers.
• Plan and execute fleet-wide network upgrade initiatives with readiness checks.
• Lead infrastructure rollout across global POPs, data centers, and backbone network.
• Operate lab/test environment to validate hardware platforms and tooling.
• Collaborate with engineers/vendors to investigate issues and document resolutions.
• Coordinate cross-functional efforts for scalability, compliance, and repeatability of operations.
• Contribute to runbooks and deployment procedures for network changes.

Skills

5+ years experience

Production networking

Cisco/Juniper/Arista

BGP

OSPF/ISIS

IPv4/IPv6

Vendor escalation

English proficiency

Python scripting

Tools

Ansible

Job description

Sii Poland is seeking an experienced Senior Network Administrator to manage production network platforms and lifecycle across global POPs, data centers, and backbone infrastructure.

You will collaborate with network engineers and vendors to upgrade and validate platforms, lead rollout efforts, and maintain operational documentation. Strong English skills and 5+ years in production networks are required.