Senior Network Engineer — Remote & Global Ops

Sii Poland; Piła; On-site; PLN 150,000 - 230,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Open management team

Medical care

Job summary

Sii Poland is seeking an experienced Senior Network Administrator to join our team, focusing on production network platforms, lifecycle management across global POPs, data centers, and backbone infrastructure. You will collaborate with network engineers and vendors to ensure operational excellence while guiding upgrade initiatives.

This role offers remote work flexibility and requires strong English, 5+ years in production networks, and hands-on experience with Cisco, Juniper, or Arista.

Qualifications

• Minimum 5 years in a production network environment with an operational focus.
• Hands-on with Cisco, Juniper, or Arista platforms.
• Strong knowledge of BGP, OSPF/ISIS, IPv4/IPv6.
• Experience in vendor escalation management.
• Excellent written and spoken English skills.

Responsibilities

• Support lifecycle management for production network platforms across global POPs and data centers.
• Plan, coordinate, and execute fleet-wide network upgrade initiatives with readiness checks.
• Lead infrastructure rollout across global POPs, data centers, and backbone network.
• Operate a lab to validate hardware platforms, configurations, and automation tooling.
• Collaborate with network engineers and vendors to investigate issues and document resolutions.
• Support cross-functional efforts for scalability, compliance, and operational consistency.
• Contribute to runbooks, processes, and lifecycle management documentation.

Skills

5+ years experience

Networking platforms

BGP

OSPF/ISIS

IPv4/IPv6

Vendor management

English proficiency

Tools

Cisco

Juniper

Arista

Job description

Sii Poland is seeking an experienced Senior Network Administrator to join our team, focusing on production network platforms, lifecycle management across global POPs, data centers, and backbone infrastructure. You will collaborate with network engineers and vendors to ensure operational excellence while guiding upgrade initiatives.

This role offers remote work flexibility and requires strong English, 5+ years in production networks, and hands-on experience with Cisco, Juniper, or Arista.